Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Server management functions. |
| 3 | * |
Willy Tarreau | 21faa91 | 2012-10-10 08:27:36 +0200 | [diff] [blame] | 4 | * Copyright 2000-2012 Willy Tarreau <w@1wt.eu> |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 5 | * Copyright 2007-2008 Krzysztof Piotr Oledzki <ole@ans.pl> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version |
| 10 | * 2 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | */ |
| 13 | |
Willy Tarreau | 0a4b0ab | 2020-06-11 11:22:44 +0200 | [diff] [blame] | 14 | #include <sys/types.h> |
Willy Tarreau | b255105 | 2020-06-09 09:07:15 +0200 | [diff] [blame] | 15 | #include <netinet/tcp.h> |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 16 | #include <ctype.h> |
Baptiste Assmann | e11cfcd | 2015-08-19 16:44:03 +0200 | [diff] [blame] | 17 | #include <errno.h> |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 18 | |
Willy Tarreau | 6be7849 | 2020-06-05 00:00:29 +0200 | [diff] [blame] | 19 | #include <import/xxhash.h> |
| 20 | |
Willy Tarreau | b255105 | 2020-06-09 09:07:15 +0200 | [diff] [blame] | 21 | #include <haproxy/api.h> |
Willy Tarreau | 3f0f82e | 2020-06-04 19:42:41 +0200 | [diff] [blame] | 22 | #include <haproxy/applet-t.h> |
Willy Tarreau | 4980160 | 2020-06-04 22:50:02 +0200 | [diff] [blame] | 23 | #include <haproxy/backend.h> |
Willy Tarreau | 6be7849 | 2020-06-05 00:00:29 +0200 | [diff] [blame] | 24 | #include <haproxy/cfgparse.h> |
Willy Tarreau | 4aa573d | 2020-06-04 18:21:56 +0200 | [diff] [blame] | 25 | #include <haproxy/check.h> |
Willy Tarreau | 83487a8 | 2020-06-04 20:19:54 +0200 | [diff] [blame] | 26 | #include <haproxy/cli.h> |
Willy Tarreau | 7ea393d | 2020-06-04 18:02:10 +0200 | [diff] [blame] | 27 | #include <haproxy/connection.h> |
Willy Tarreau | 3afc4c4 | 2020-06-03 18:23:19 +0200 | [diff] [blame] | 28 | #include <haproxy/dict-t.h> |
Willy Tarreau | 8d36697 | 2020-05-27 16:10:29 +0200 | [diff] [blame] | 29 | #include <haproxy/errors.h> |
Willy Tarreau | f268ee8 | 2020-06-04 17:05:57 +0200 | [diff] [blame] | 30 | #include <haproxy/global.h> |
Willy Tarreau | 36979d9 | 2020-06-05 17:27:29 +0200 | [diff] [blame] | 31 | #include <haproxy/log.h> |
Willy Tarreau | cee013e | 2020-06-05 11:40:38 +0200 | [diff] [blame] | 32 | #include <haproxy/mailers.h> |
Willy Tarreau | 7a00efb | 2020-06-02 17:02:59 +0200 | [diff] [blame] | 33 | #include <haproxy/namespace.h> |
Willy Tarreau | b255105 | 2020-06-09 09:07:15 +0200 | [diff] [blame] | 34 | #include <haproxy/port_range.h> |
| 35 | #include <haproxy/protocol.h> |
Willy Tarreau | b00a8e3 | 2021-05-08 20:18:59 +0200 | [diff] [blame] | 36 | #include <haproxy/proxy.h> |
Willy Tarreau | a55c454 | 2020-06-04 22:59:39 +0200 | [diff] [blame] | 37 | #include <haproxy/queue.h> |
Emeric Brun | c943799 | 2021-02-12 19:42:55 +0100 | [diff] [blame] | 38 | #include <haproxy/resolvers.h> |
Willy Tarreau | e6ce10b | 2020-06-04 15:33:47 +0200 | [diff] [blame] | 39 | #include <haproxy/sample.h> |
Willy Tarreau | 1e56f92 | 2020-06-04 23:20:13 +0200 | [diff] [blame] | 40 | #include <haproxy/server.h> |
William Dauchy | f637044 | 2020-11-14 19:25:33 +0100 | [diff] [blame] | 41 | #include <haproxy/ssl_sock.h> |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 42 | #include <haproxy/stats.h> |
Willy Tarreau | dfd3de8 | 2020-06-04 23:46:14 +0200 | [diff] [blame] | 43 | #include <haproxy/stream.h> |
Willy Tarreau | 5e539c9 | 2020-06-04 20:45:39 +0200 | [diff] [blame] | 44 | #include <haproxy/stream_interface.h> |
Willy Tarreau | cea0e1b | 2020-06-04 17:25:40 +0200 | [diff] [blame] | 45 | #include <haproxy/task.h> |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 46 | #include <haproxy/tcpcheck.h> |
Willy Tarreau | 92b4f13 | 2020-06-01 11:05:15 +0200 | [diff] [blame] | 47 | #include <haproxy/time.h> |
Willy Tarreau | ba6300e | 2021-05-08 14:09:40 +0200 | [diff] [blame] | 48 | #include <haproxy/tools.h> |
Krzysztof Oledzki | 8513094 | 2007-10-22 16:21:10 +0200 | [diff] [blame] | 49 | |
Baptiste Assmann | da29fe2 | 2019-06-13 13:24:29 +0200 | [diff] [blame] | 50 | |
Willy Tarreau | 3ff577e | 2018-08-02 11:48:52 +0200 | [diff] [blame] | 51 | static void srv_update_status(struct server *s); |
Baptiste Assmann | 83cbaa5 | 2016-11-02 15:34:05 +0100 | [diff] [blame] | 52 | static int srv_apply_lastaddr(struct server *srv, int *err_code); |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 53 | static void srv_cleanup_connections(struct server *srv); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 54 | |
Amaury Denoyelle | 587b71e | 2021-03-10 16:36:02 +0100 | [diff] [blame] | 55 | /* extra keywords used as value for other arguments. They are used as |
| 56 | * suggestions for mistyped words. |
Willy Tarreau | 49c2b45 | 2021-03-12 09:58:04 +0100 | [diff] [blame] | 57 | */ |
Amaury Denoyelle | 587b71e | 2021-03-10 16:36:02 +0100 | [diff] [blame] | 58 | static const char *extra_kw_list[] = { |
| 59 | "ipv4", "ipv6", "legacy", "octet-count", |
Amaury Denoyelle | 3b89c11 | 2021-03-12 16:04:00 +0100 | [diff] [blame] | 60 | "fail-check", "sudden-death", "mark-down", |
Willy Tarreau | 49c2b45 | 2021-03-12 09:58:04 +0100 | [diff] [blame] | 61 | NULL /* must be last */ |
| 62 | }; |
| 63 | |
Willy Tarreau | 21faa91 | 2012-10-10 08:27:36 +0200 | [diff] [blame] | 64 | /* List head of all known server keywords */ |
| 65 | static struct srv_kw_list srv_keywords = { |
| 66 | .list = LIST_HEAD_INIT(srv_keywords.list) |
| 67 | }; |
Krzysztof Oledzki | 8513094 | 2007-10-22 16:21:10 +0200 | [diff] [blame] | 68 | |
Willy Tarreau | af613e8 | 2020-06-05 08:40:51 +0200 | [diff] [blame] | 69 | __decl_thread(HA_SPINLOCK_T idle_conn_srv_lock); |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 70 | struct eb_root idle_conn_srv = EB_ROOT; |
Willy Tarreau | 14015b8 | 2021-04-10 17:33:15 +0200 | [diff] [blame] | 71 | struct task *idle_conn_task __read_mostly = NULL; |
Willy Tarreau | 198e92a | 2021-03-05 10:23:32 +0100 | [diff] [blame] | 72 | struct list servers_list = LIST_HEAD_INIT(servers_list); |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 73 | |
Frédéric Lécaille | 7da7129 | 2019-05-20 09:47:07 +0200 | [diff] [blame] | 74 | /* The server names dictionary */ |
Thayne McCombs | 92149f9 | 2020-11-20 01:28:26 -0700 | [diff] [blame] | 75 | struct dict server_key_dict = { |
| 76 | .name = "server keys", |
Frédéric Lécaille | 7da7129 | 2019-05-20 09:47:07 +0200 | [diff] [blame] | 77 | .values = EB_ROOT_UNIQUE, |
| 78 | }; |
| 79 | |
Simon Horman | a360844 | 2013-11-01 16:46:15 +0900 | [diff] [blame] | 80 | int srv_downtime(const struct server *s) |
Willy Tarreau | 21faa91 | 2012-10-10 08:27:36 +0200 | [diff] [blame] | 81 | { |
Amaury Denoyelle | e6ba791 | 2020-10-29 15:59:05 +0100 | [diff] [blame] | 82 | if ((s->cur_state != SRV_ST_STOPPED) || s->last_change >= now.tv_sec) // ignore negative time |
Krzysztof Oledzki | 8513094 | 2007-10-22 16:21:10 +0200 | [diff] [blame] | 83 | return s->down_time; |
| 84 | |
| 85 | return now.tv_sec - s->last_change + s->down_time; |
| 86 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 87 | |
Bhaskar Maddala | a20cb85 | 2014-02-03 16:26:46 -0500 | [diff] [blame] | 88 | int srv_lastsession(const struct server *s) |
| 89 | { |
| 90 | if (s->counters.last_sess) |
| 91 | return now.tv_sec - s->counters.last_sess; |
| 92 | |
| 93 | return -1; |
| 94 | } |
| 95 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 96 | int srv_getinter(const struct check *check) |
Willy Tarreau | 21faa91 | 2012-10-10 08:27:36 +0200 | [diff] [blame] | 97 | { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 98 | const struct server *s = check->server; |
| 99 | |
Willy Tarreau | ff5ae35 | 2013-12-11 20:36:34 +0100 | [diff] [blame] | 100 | if ((check->state & CHK_ST_CONFIGURED) && (check->health == check->rise + check->fall - 1)) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 101 | return check->inter; |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 102 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 103 | if ((s->next_state == SRV_ST_STOPPED) && check->health == 0) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 104 | return (check->downinter)?(check->downinter):(check->inter); |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 105 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 106 | return (check->fastinter)?(check->fastinter):(check->inter); |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 107 | } |
| 108 | |
Olivier Houchard | e9bad0a | 2018-01-17 17:39:34 +0100 | [diff] [blame] | 109 | /* |
| 110 | * Check that we did not get a hash collision. |
Willy Tarreau | 595e767 | 2020-10-20 17:30:08 +0200 | [diff] [blame] | 111 | * Unlikely, but it can happen. The server's proxy must be at least |
| 112 | * read-locked. |
Olivier Houchard | e9bad0a | 2018-01-17 17:39:34 +0100 | [diff] [blame] | 113 | */ |
| 114 | static inline void srv_check_for_dup_dyncookie(struct server *s) |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 115 | { |
| 116 | struct proxy *p = s->proxy; |
| 117 | struct server *tmpserv; |
Olivier Houchard | e9bad0a | 2018-01-17 17:39:34 +0100 | [diff] [blame] | 118 | |
| 119 | for (tmpserv = p->srv; tmpserv != NULL; |
| 120 | tmpserv = tmpserv->next) { |
| 121 | if (tmpserv == s) |
| 122 | continue; |
| 123 | if (tmpserv->next_admin & SRV_ADMF_FMAINT) |
| 124 | continue; |
| 125 | if (tmpserv->cookie && |
| 126 | strcmp(tmpserv->cookie, s->cookie) == 0) { |
| 127 | ha_warning("We generated two equal cookies for two different servers.\n" |
| 128 | "Please change the secret key for '%s'.\n", |
| 129 | s->proxy->id); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | } |
| 134 | |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 135 | /* |
Willy Tarreau | 595e767 | 2020-10-20 17:30:08 +0200 | [diff] [blame] | 136 | * Must be called with the server lock held, and will read-lock the proxy. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 137 | */ |
Olivier Houchard | e9bad0a | 2018-01-17 17:39:34 +0100 | [diff] [blame] | 138 | void srv_set_dyncookie(struct server *s) |
| 139 | { |
| 140 | struct proxy *p = s->proxy; |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 141 | char *tmpbuf; |
| 142 | unsigned long long hash_value; |
Olivier Houchard | 2cb49eb | 2017-03-15 15:11:06 +0100 | [diff] [blame] | 143 | size_t key_len; |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 144 | size_t buffer_len; |
| 145 | int addr_len; |
| 146 | int port; |
| 147 | |
Willy Tarreau | 595e767 | 2020-10-20 17:30:08 +0200 | [diff] [blame] | 148 | HA_RWLOCK_RDLOCK(PROXY_LOCK, &p->lock); |
Willy Tarreau | 5e83d99 | 2019-07-30 11:59:34 +0200 | [diff] [blame] | 149 | |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 150 | if ((s->flags & SRV_F_COOKIESET) || |
| 151 | !(s->proxy->ck_opts & PR_CK_DYNAMIC) || |
| 152 | s->proxy->dyncookie_key == NULL) |
Willy Tarreau | 5e83d99 | 2019-07-30 11:59:34 +0200 | [diff] [blame] | 153 | goto out; |
Olivier Houchard | 2cb49eb | 2017-03-15 15:11:06 +0100 | [diff] [blame] | 154 | key_len = strlen(p->dyncookie_key); |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 155 | |
| 156 | if (s->addr.ss_family != AF_INET && |
| 157 | s->addr.ss_family != AF_INET6) |
Willy Tarreau | 5e83d99 | 2019-07-30 11:59:34 +0200 | [diff] [blame] | 158 | goto out; |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 159 | /* |
| 160 | * Buffer to calculate the cookie value. |
| 161 | * The buffer contains the secret key + the server IP address |
| 162 | * + the TCP port. |
| 163 | */ |
| 164 | addr_len = (s->addr.ss_family == AF_INET) ? 4 : 16; |
| 165 | /* |
| 166 | * The TCP port should use only 2 bytes, but is stored in |
| 167 | * an unsigned int in struct server, so let's use 4, to be |
| 168 | * on the safe side. |
| 169 | */ |
| 170 | buffer_len = key_len + addr_len + 4; |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 171 | tmpbuf = trash.area; |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 172 | memcpy(tmpbuf, p->dyncookie_key, key_len); |
| 173 | memcpy(&(tmpbuf[key_len]), |
| 174 | s->addr.ss_family == AF_INET ? |
| 175 | (void *)&((struct sockaddr_in *)&s->addr)->sin_addr.s_addr : |
| 176 | (void *)&(((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr), |
| 177 | addr_len); |
| 178 | /* |
| 179 | * Make sure it's the same across all the load balancers, |
| 180 | * no matter their endianness. |
| 181 | */ |
| 182 | port = htonl(s->svc_port); |
| 183 | memcpy(&tmpbuf[key_len + addr_len], &port, 4); |
| 184 | hash_value = XXH64(tmpbuf, buffer_len, 0); |
| 185 | memprintf(&s->cookie, "%016llx", hash_value); |
| 186 | if (!s->cookie) |
Willy Tarreau | 5e83d99 | 2019-07-30 11:59:34 +0200 | [diff] [blame] | 187 | goto out; |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 188 | s->cklen = 16; |
Olivier Houchard | e9bad0a | 2018-01-17 17:39:34 +0100 | [diff] [blame] | 189 | |
| 190 | /* Don't bother checking if the dyncookie is duplicated if |
| 191 | * the server is marked as "disabled", maybe it doesn't have |
| 192 | * its real IP yet, but just a place holder. |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 193 | */ |
Olivier Houchard | e9bad0a | 2018-01-17 17:39:34 +0100 | [diff] [blame] | 194 | if (!(s->next_admin & SRV_ADMF_FMAINT)) |
| 195 | srv_check_for_dup_dyncookie(s); |
Willy Tarreau | 5e83d99 | 2019-07-30 11:59:34 +0200 | [diff] [blame] | 196 | out: |
Willy Tarreau | 595e767 | 2020-10-20 17:30:08 +0200 | [diff] [blame] | 197 | HA_RWLOCK_RDUNLOCK(PROXY_LOCK, &p->lock); |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 198 | } |
| 199 | |
Willy Tarreau | 21faa91 | 2012-10-10 08:27:36 +0200 | [diff] [blame] | 200 | /* |
Thayne McCombs | 92149f9 | 2020-11-20 01:28:26 -0700 | [diff] [blame] | 201 | * Must be called with the server lock held, and will write-lock the proxy. |
| 202 | */ |
| 203 | static void srv_set_addr_desc(struct server *s) |
| 204 | { |
| 205 | struct proxy *p = s->proxy; |
| 206 | char *key; |
| 207 | |
| 208 | key = sa2str(&s->addr, s->svc_port, s->flags & SRV_F_MAPPORTS); |
| 209 | |
| 210 | if (s->addr_node.key) { |
Thayne McCombs | 24da7e1 | 2021-01-05 23:10:09 -0700 | [diff] [blame] | 211 | if (key && strcmp(key, s->addr_node.key) == 0) { |
Thayne McCombs | 92149f9 | 2020-11-20 01:28:26 -0700 | [diff] [blame] | 212 | free(key); |
| 213 | return; |
| 214 | } |
| 215 | |
| 216 | HA_RWLOCK_WRLOCK(PROXY_LOCK, &p->lock); |
| 217 | ebpt_delete(&s->addr_node); |
| 218 | HA_RWLOCK_WRUNLOCK(PROXY_LOCK, &p->lock); |
| 219 | |
| 220 | free(s->addr_node.key); |
| 221 | } |
| 222 | |
| 223 | s->addr_node.key = key; |
| 224 | |
Thayne McCombs | 24da7e1 | 2021-01-05 23:10:09 -0700 | [diff] [blame] | 225 | if (s->addr_node.key) { |
| 226 | HA_RWLOCK_WRLOCK(PROXY_LOCK, &p->lock); |
| 227 | ebis_insert(&p->used_server_addr, &s->addr_node); |
| 228 | HA_RWLOCK_WRUNLOCK(PROXY_LOCK, &p->lock); |
| 229 | } |
Thayne McCombs | 92149f9 | 2020-11-20 01:28:26 -0700 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | /* |
Willy Tarreau | 21faa91 | 2012-10-10 08:27:36 +0200 | [diff] [blame] | 233 | * Registers the server keyword list <kwl> as a list of valid keywords for next |
| 234 | * parsing sessions. |
| 235 | */ |
| 236 | void srv_register_keywords(struct srv_kw_list *kwl) |
| 237 | { |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 238 | LIST_APPEND(&srv_keywords.list, &kwl->list); |
Willy Tarreau | 21faa91 | 2012-10-10 08:27:36 +0200 | [diff] [blame] | 239 | } |
| 240 | |
| 241 | /* Return a pointer to the server keyword <kw>, or NULL if not found. If the |
| 242 | * keyword is found with a NULL ->parse() function, then an attempt is made to |
| 243 | * find one with a valid ->parse() function. This way it is possible to declare |
| 244 | * platform-dependant, known keywords as NULL, then only declare them as valid |
| 245 | * if some options are met. Note that if the requested keyword contains an |
| 246 | * opening parenthesis, everything from this point is ignored. |
| 247 | */ |
| 248 | struct srv_kw *srv_find_kw(const char *kw) |
| 249 | { |
| 250 | int index; |
| 251 | const char *kwend; |
| 252 | struct srv_kw_list *kwl; |
| 253 | struct srv_kw *ret = NULL; |
| 254 | |
| 255 | kwend = strchr(kw, '('); |
| 256 | if (!kwend) |
| 257 | kwend = kw + strlen(kw); |
| 258 | |
| 259 | list_for_each_entry(kwl, &srv_keywords.list, list) { |
| 260 | for (index = 0; kwl->kw[index].kw != NULL; index++) { |
| 261 | if ((strncmp(kwl->kw[index].kw, kw, kwend - kw) == 0) && |
| 262 | kwl->kw[index].kw[kwend-kw] == 0) { |
| 263 | if (kwl->kw[index].parse) |
| 264 | return &kwl->kw[index]; /* found it !*/ |
| 265 | else |
| 266 | ret = &kwl->kw[index]; /* may be OK */ |
| 267 | } |
| 268 | } |
| 269 | } |
| 270 | return ret; |
| 271 | } |
| 272 | |
| 273 | /* Dumps all registered "server" keywords to the <out> string pointer. The |
| 274 | * unsupported keywords are only dumped if their supported form was not |
| 275 | * found. |
| 276 | */ |
| 277 | void srv_dump_kws(char **out) |
| 278 | { |
| 279 | struct srv_kw_list *kwl; |
| 280 | int index; |
| 281 | |
Christopher Faulet | 784063e | 2020-05-18 12:14:18 +0200 | [diff] [blame] | 282 | if (!out) |
| 283 | return; |
| 284 | |
Willy Tarreau | 21faa91 | 2012-10-10 08:27:36 +0200 | [diff] [blame] | 285 | *out = NULL; |
| 286 | list_for_each_entry(kwl, &srv_keywords.list, list) { |
| 287 | for (index = 0; kwl->kw[index].kw != NULL; index++) { |
| 288 | if (kwl->kw[index].parse || |
| 289 | srv_find_kw(kwl->kw[index].kw) == &kwl->kw[index]) { |
| 290 | memprintf(out, "%s[%4s] %s%s%s%s\n", *out ? *out : "", |
| 291 | kwl->scope, |
| 292 | kwl->kw[index].kw, |
| 293 | kwl->kw[index].skip ? " <arg>" : "", |
| 294 | kwl->kw[index].default_ok ? " [dflt_ok]" : "", |
| 295 | kwl->kw[index].parse ? "" : " (not supported)"); |
| 296 | } |
| 297 | } |
| 298 | } |
Willy Tarreau | 49c2b45 | 2021-03-12 09:58:04 +0100 | [diff] [blame] | 299 | } |
| 300 | |
| 301 | /* Try to find in srv_keyword the word that looks closest to <word> by counting |
| 302 | * transitions between letters, digits and other characters. Will return the |
| 303 | * best matching word if found, otherwise NULL. An optional array of extra |
| 304 | * words to compare may be passed in <extra>, but it must then be terminated |
| 305 | * by a NULL entry. If unused it may be NULL. |
| 306 | */ |
| 307 | static const char *srv_find_best_kw(const char *word) |
| 308 | { |
| 309 | uint8_t word_sig[1024]; |
| 310 | uint8_t list_sig[1024]; |
| 311 | const struct srv_kw_list *kwl; |
| 312 | const char *best_ptr = NULL; |
| 313 | int dist, best_dist = INT_MAX; |
| 314 | const char **extra; |
| 315 | int index; |
| 316 | |
| 317 | make_word_fingerprint(word_sig, word); |
| 318 | list_for_each_entry(kwl, &srv_keywords.list, list) { |
| 319 | for (index = 0; kwl->kw[index].kw != NULL; index++) { |
| 320 | make_word_fingerprint(list_sig, kwl->kw[index].kw); |
| 321 | dist = word_fingerprint_distance(word_sig, list_sig); |
| 322 | if (dist < best_dist) { |
| 323 | best_dist = dist; |
| 324 | best_ptr = kwl->kw[index].kw; |
| 325 | } |
| 326 | } |
| 327 | } |
| 328 | |
Amaury Denoyelle | 587b71e | 2021-03-10 16:36:02 +0100 | [diff] [blame] | 329 | for (extra = extra_kw_list; *extra; extra++) { |
Willy Tarreau | 49c2b45 | 2021-03-12 09:58:04 +0100 | [diff] [blame] | 330 | make_word_fingerprint(list_sig, *extra); |
| 331 | dist = word_fingerprint_distance(word_sig, list_sig); |
| 332 | if (dist < best_dist) { |
| 333 | best_dist = dist; |
| 334 | best_ptr = *extra; |
| 335 | } |
Willy Tarreau | 49c2b45 | 2021-03-12 09:58:04 +0100 | [diff] [blame] | 336 | } |
| 337 | |
| 338 | if (best_dist > 2 * strlen(word) || (best_ptr && best_dist > 2 * strlen(best_ptr))) |
| 339 | best_ptr = NULL; |
| 340 | |
| 341 | return best_ptr; |
Willy Tarreau | 21faa91 | 2012-10-10 08:27:36 +0200 | [diff] [blame] | 342 | } |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 343 | |
Frédéric Lécaille | f5bf903 | 2017-03-10 11:51:05 +0100 | [diff] [blame] | 344 | /* Parse the "backup" server keyword */ |
| 345 | static int srv_parse_backup(char **args, int *cur_arg, |
| 346 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 347 | { |
| 348 | newsrv->flags |= SRV_F_BACKUP; |
| 349 | return 0; |
| 350 | } |
| 351 | |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 352 | |
Frédéric Lécaille | 9d1b95b | 2017-03-15 09:13:33 +0100 | [diff] [blame] | 353 | /* Parse the "cookie" server keyword */ |
| 354 | static int srv_parse_cookie(char **args, int *cur_arg, |
| 355 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 356 | { |
| 357 | char *arg; |
| 358 | |
| 359 | arg = args[*cur_arg + 1]; |
| 360 | if (!*arg) { |
| 361 | memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]); |
| 362 | return ERR_ALERT | ERR_FATAL; |
| 363 | } |
| 364 | |
| 365 | free(newsrv->cookie); |
| 366 | newsrv->cookie = strdup(arg); |
| 367 | newsrv->cklen = strlen(arg); |
| 368 | newsrv->flags |= SRV_F_COOKIESET; |
| 369 | return 0; |
| 370 | } |
| 371 | |
Frédéric Lécaille | 2a0d061 | 2017-03-21 11:53:54 +0100 | [diff] [blame] | 372 | /* Parse the "disabled" server keyword */ |
| 373 | static int srv_parse_disabled(char **args, int *cur_arg, |
| 374 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 375 | { |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 376 | newsrv->next_admin |= SRV_ADMF_CMAINT | SRV_ADMF_FMAINT; |
| 377 | newsrv->next_state = SRV_ST_STOPPED; |
Frédéric Lécaille | 2a0d061 | 2017-03-21 11:53:54 +0100 | [diff] [blame] | 378 | newsrv->check.state |= CHK_ST_PAUSED; |
| 379 | newsrv->check.health = 0; |
| 380 | return 0; |
| 381 | } |
| 382 | |
| 383 | /* Parse the "enabled" server keyword */ |
| 384 | static int srv_parse_enabled(char **args, int *cur_arg, |
| 385 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 386 | { |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 387 | newsrv->next_admin &= ~SRV_ADMF_CMAINT & ~SRV_ADMF_FMAINT; |
| 388 | newsrv->next_state = SRV_ST_RUNNING; |
Frédéric Lécaille | 2a0d061 | 2017-03-21 11:53:54 +0100 | [diff] [blame] | 389 | newsrv->check.state &= ~CHK_ST_PAUSED; |
| 390 | newsrv->check.health = newsrv->check.rise; |
| 391 | return 0; |
| 392 | } |
| 393 | |
Amaury Denoyelle | 587b71e | 2021-03-10 16:36:02 +0100 | [diff] [blame] | 394 | /* Parse the "error-limit" server keyword */ |
| 395 | static int srv_parse_error_limit(char **args, int *cur_arg, |
| 396 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 397 | { |
| 398 | if (!*args[*cur_arg + 1]) { |
| 399 | memprintf(err, "'%s' expects an integer argument.", |
| 400 | args[*cur_arg]); |
| 401 | return ERR_ALERT | ERR_FATAL; |
| 402 | } |
| 403 | |
| 404 | newsrv->consecutive_errors_limit = atoi(args[*cur_arg + 1]); |
| 405 | |
| 406 | if (newsrv->consecutive_errors_limit <= 0) { |
| 407 | memprintf(err, "%s has to be > 0.", |
| 408 | args[*cur_arg]); |
| 409 | return ERR_ALERT | ERR_FATAL; |
| 410 | } |
| 411 | |
| 412 | return 0; |
| 413 | } |
| 414 | |
| 415 | /* Parse the "init-addr" server keyword */ |
| 416 | static int srv_parse_init_addr(char **args, int *cur_arg, |
| 417 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 418 | { |
| 419 | char *p, *end; |
| 420 | int done; |
| 421 | struct sockaddr_storage sa; |
| 422 | |
| 423 | newsrv->init_addr_methods = 0; |
| 424 | memset(&newsrv->init_addr, 0, sizeof(newsrv->init_addr)); |
| 425 | |
| 426 | for (p = args[*cur_arg + 1]; *p; p = end) { |
| 427 | /* cut on next comma */ |
| 428 | for (end = p; *end && *end != ','; end++); |
| 429 | if (*end) |
| 430 | *(end++) = 0; |
| 431 | |
| 432 | memset(&sa, 0, sizeof(sa)); |
| 433 | if (strcmp(p, "libc") == 0) { |
| 434 | done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_LIBC); |
| 435 | } |
| 436 | else if (strcmp(p, "last") == 0) { |
| 437 | done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_LAST); |
| 438 | } |
| 439 | else if (strcmp(p, "none") == 0) { |
| 440 | done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_NONE); |
| 441 | } |
| 442 | else if (str2ip2(p, &sa, 0)) { |
| 443 | if (is_addr(&newsrv->init_addr)) { |
| 444 | memprintf(err, "'%s' : initial address already specified, cannot add '%s'.", |
| 445 | args[*cur_arg], p); |
| 446 | return ERR_ALERT | ERR_FATAL; |
| 447 | } |
| 448 | newsrv->init_addr = sa; |
| 449 | done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_IP); |
| 450 | } |
| 451 | else { |
| 452 | memprintf(err, "'%s' : unknown init-addr method '%s', supported methods are 'libc', 'last', 'none'.", |
| 453 | args[*cur_arg], p); |
| 454 | return ERR_ALERT | ERR_FATAL; |
| 455 | } |
| 456 | if (!done) { |
| 457 | memprintf(err, "'%s' : too many init-addr methods when trying to add '%s'", |
| 458 | args[*cur_arg], p); |
| 459 | return ERR_ALERT | ERR_FATAL; |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | return 0; |
| 464 | } |
| 465 | |
| 466 | /* Parse the "log-proto" server keyword */ |
| 467 | static int srv_parse_log_proto(char **args, int *cur_arg, |
| 468 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 469 | { |
| 470 | if (strcmp(args[*cur_arg + 1], "legacy") == 0) |
| 471 | newsrv->log_proto = SRV_LOG_PROTO_LEGACY; |
| 472 | else if (strcmp(args[*cur_arg + 1], "octet-count") == 0) |
| 473 | newsrv->log_proto = SRV_LOG_PROTO_OCTET_COUNTING; |
| 474 | else { |
| 475 | memprintf(err, "'%s' expects one of 'legacy' or 'octet-count' but got '%s'", |
| 476 | args[*cur_arg], args[*cur_arg + 1]); |
| 477 | return ERR_ALERT | ERR_FATAL; |
| 478 | } |
| 479 | |
| 480 | return 0; |
| 481 | } |
| 482 | |
| 483 | /* Parse the "maxconn" server keyword */ |
| 484 | static int srv_parse_maxconn(char **args, int *cur_arg, |
| 485 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 486 | { |
| 487 | newsrv->maxconn = atol(args[*cur_arg + 1]); |
| 488 | return 0; |
| 489 | } |
| 490 | |
| 491 | /* Parse the "maxqueue" server keyword */ |
| 492 | static int srv_parse_maxqueue(char **args, int *cur_arg, |
| 493 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 494 | { |
| 495 | newsrv->maxqueue = atol(args[*cur_arg + 1]); |
| 496 | return 0; |
| 497 | } |
| 498 | |
| 499 | /* Parse the "minconn" server keyword */ |
| 500 | static int srv_parse_minconn(char **args, int *cur_arg, |
| 501 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 502 | { |
| 503 | newsrv->minconn = atol(args[*cur_arg + 1]); |
| 504 | return 0; |
| 505 | } |
| 506 | |
Willy Tarreau | 9c538e0 | 2019-01-23 10:21:49 +0100 | [diff] [blame] | 507 | static int srv_parse_max_reuse(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err) |
| 508 | { |
| 509 | char *arg; |
| 510 | |
| 511 | arg = args[*cur_arg + 1]; |
| 512 | if (!*arg) { |
| 513 | memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]); |
| 514 | return ERR_ALERT | ERR_FATAL; |
| 515 | } |
| 516 | newsrv->max_reuse = atoi(arg); |
| 517 | |
| 518 | return 0; |
| 519 | } |
| 520 | |
Olivier Houchard | b7b3faa | 2018-12-14 18:15:36 +0100 | [diff] [blame] | 521 | static int srv_parse_pool_purge_delay(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err) |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 522 | { |
| 523 | const char *res; |
| 524 | char *arg; |
| 525 | unsigned int time; |
| 526 | |
| 527 | arg = args[*cur_arg + 1]; |
| 528 | if (!*arg) { |
| 529 | memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]); |
| 530 | return ERR_ALERT | ERR_FATAL; |
| 531 | } |
| 532 | res = parse_time_err(arg, &time, TIME_UNIT_MS); |
Willy Tarreau | 9faebe3 | 2019-06-07 19:00:37 +0200 | [diff] [blame] | 533 | if (res == PARSE_TIME_OVER) { |
| 534 | memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)", |
| 535 | args[*cur_arg+1], args[*cur_arg]); |
| 536 | return ERR_ALERT | ERR_FATAL; |
| 537 | } |
| 538 | else if (res == PARSE_TIME_UNDER) { |
| 539 | memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)", |
| 540 | args[*cur_arg+1], args[*cur_arg]); |
| 541 | return ERR_ALERT | ERR_FATAL; |
| 542 | } |
| 543 | else if (res) { |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 544 | memprintf(err, "unexpected character '%c' in argument to <%s>.\n", |
| 545 | *res, args[*cur_arg]); |
| 546 | return ERR_ALERT | ERR_FATAL; |
| 547 | } |
Olivier Houchard | b7b3faa | 2018-12-14 18:15:36 +0100 | [diff] [blame] | 548 | newsrv->pool_purge_delay = time; |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 549 | |
| 550 | return 0; |
| 551 | } |
| 552 | |
Willy Tarreau | 2f3f4d3 | 2020-07-01 07:43:51 +0200 | [diff] [blame] | 553 | static int srv_parse_pool_low_conn(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err) |
| 554 | { |
| 555 | char *arg; |
| 556 | |
| 557 | arg = args[*cur_arg + 1]; |
| 558 | if (!*arg) { |
| 559 | memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]); |
| 560 | return ERR_ALERT | ERR_FATAL; |
| 561 | } |
| 562 | |
| 563 | newsrv->low_idle_conns = atoi(arg); |
| 564 | return 0; |
| 565 | } |
| 566 | |
Olivier Houchard | 006e310 | 2018-12-10 18:30:32 +0100 | [diff] [blame] | 567 | static int srv_parse_pool_max_conn(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err) |
| 568 | { |
| 569 | char *arg; |
| 570 | |
| 571 | arg = args[*cur_arg + 1]; |
| 572 | if (!*arg) { |
| 573 | memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]); |
| 574 | return ERR_ALERT | ERR_FATAL; |
| 575 | } |
Willy Tarreau | cb923d5 | 2019-01-23 10:39:27 +0100 | [diff] [blame] | 576 | |
Olivier Houchard | 006e310 | 2018-12-10 18:30:32 +0100 | [diff] [blame] | 577 | newsrv->max_idle_conns = atoi(arg); |
Willy Tarreau | cb923d5 | 2019-01-23 10:39:27 +0100 | [diff] [blame] | 578 | if ((int)newsrv->max_idle_conns < -1) { |
| 579 | memprintf(err, "'%s' must be >= -1", args[*cur_arg]); |
| 580 | return ERR_ALERT | ERR_FATAL; |
| 581 | } |
Olivier Houchard | 006e310 | 2018-12-10 18:30:32 +0100 | [diff] [blame] | 582 | |
| 583 | return 0; |
| 584 | } |
| 585 | |
Willy Tarreau | dff5543 | 2012-10-10 17:51:05 +0200 | [diff] [blame] | 586 | /* parse the "id" server keyword */ |
| 587 | static int srv_parse_id(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err) |
| 588 | { |
| 589 | struct eb32_node *node; |
| 590 | |
| 591 | if (!*args[*cur_arg + 1]) { |
| 592 | memprintf(err, "'%s' : expects an integer argument", args[*cur_arg]); |
| 593 | return ERR_ALERT | ERR_FATAL; |
| 594 | } |
| 595 | |
| 596 | newsrv->puid = atol(args[*cur_arg + 1]); |
| 597 | newsrv->conf.id.key = newsrv->puid; |
| 598 | |
| 599 | if (newsrv->puid <= 0) { |
| 600 | memprintf(err, "'%s' : custom id has to be > 0", args[*cur_arg]); |
| 601 | return ERR_ALERT | ERR_FATAL; |
| 602 | } |
| 603 | |
| 604 | node = eb32_lookup(&curproxy->conf.used_server_id, newsrv->puid); |
| 605 | if (node) { |
| 606 | struct server *target = container_of(node, struct server, conf.id); |
| 607 | memprintf(err, "'%s' : custom id %d already used at %s:%d ('server %s')", |
| 608 | args[*cur_arg], newsrv->puid, target->conf.file, target->conf.line, |
| 609 | target->id); |
| 610 | return ERR_ALERT | ERR_FATAL; |
| 611 | } |
| 612 | |
Baptiste Assmann | 7cc419a | 2015-07-07 22:02:20 +0200 | [diff] [blame] | 613 | newsrv->flags |= SRV_F_FORCED_ID; |
Willy Tarreau | dff5543 | 2012-10-10 17:51:05 +0200 | [diff] [blame] | 614 | return 0; |
| 615 | } |
| 616 | |
Frédéric Lécaille | 22f41a2 | 2017-03-16 17:17:36 +0100 | [diff] [blame] | 617 | /* Parse the "namespace" server keyword */ |
| 618 | static int srv_parse_namespace(char **args, int *cur_arg, |
| 619 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 620 | { |
Willy Tarreau | e573323 | 2019-05-22 19:24:06 +0200 | [diff] [blame] | 621 | #ifdef USE_NS |
Frédéric Lécaille | 22f41a2 | 2017-03-16 17:17:36 +0100 | [diff] [blame] | 622 | char *arg; |
| 623 | |
| 624 | arg = args[*cur_arg + 1]; |
| 625 | if (!*arg) { |
| 626 | memprintf(err, "'%s' : expects <name> as argument", args[*cur_arg]); |
| 627 | return ERR_ALERT | ERR_FATAL; |
| 628 | } |
| 629 | |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 630 | if (strcmp(arg, "*") == 0) { |
Frédéric Lécaille | 22f41a2 | 2017-03-16 17:17:36 +0100 | [diff] [blame] | 631 | /* Use the namespace associated with the connection (if present). */ |
| 632 | newsrv->flags |= SRV_F_USE_NS_FROM_PP; |
| 633 | return 0; |
| 634 | } |
| 635 | |
| 636 | /* |
| 637 | * As this parser may be called several times for the same 'default-server' |
| 638 | * object, or for a new 'server' instance deriving from a 'default-server' |
| 639 | * one with SRV_F_USE_NS_FROM_PP flag enabled, let's reset it. |
| 640 | */ |
| 641 | newsrv->flags &= ~SRV_F_USE_NS_FROM_PP; |
| 642 | |
| 643 | newsrv->netns = netns_store_lookup(arg, strlen(arg)); |
| 644 | if (!newsrv->netns) |
| 645 | newsrv->netns = netns_store_insert(arg); |
| 646 | |
| 647 | if (!newsrv->netns) { |
| 648 | memprintf(err, "Cannot open namespace '%s'", arg); |
| 649 | return ERR_ALERT | ERR_FATAL; |
| 650 | } |
| 651 | |
| 652 | return 0; |
| 653 | #else |
| 654 | memprintf(err, "'%s': '%s' option not implemented", args[0], args[*cur_arg]); |
| 655 | return ERR_ALERT | ERR_FATAL; |
| 656 | #endif |
| 657 | } |
| 658 | |
Frédéric Lécaille | f5bf903 | 2017-03-10 11:51:05 +0100 | [diff] [blame] | 659 | /* Parse the "no-backup" server keyword */ |
| 660 | static int srv_parse_no_backup(char **args, int *cur_arg, |
| 661 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 662 | { |
| 663 | newsrv->flags &= ~SRV_F_BACKUP; |
| 664 | return 0; |
| 665 | } |
| 666 | |
Frédéric Lécaille | 25df890 | 2017-03-10 14:04:31 +0100 | [diff] [blame] | 667 | |
Frédéric Lécaille | 31045e4 | 2017-03-10 16:40:00 +0100 | [diff] [blame] | 668 | /* Disable server PROXY protocol flags. */ |
Willy Tarreau | 0e492e2 | 2019-04-15 21:25:03 +0200 | [diff] [blame] | 669 | static inline int srv_disable_pp_flags(struct server *srv, unsigned int flags) |
Frédéric Lécaille | 31045e4 | 2017-03-10 16:40:00 +0100 | [diff] [blame] | 670 | { |
| 671 | srv->pp_opts &= ~flags; |
| 672 | return 0; |
| 673 | } |
| 674 | |
| 675 | /* Parse the "no-send-proxy" server keyword */ |
| 676 | static int srv_parse_no_send_proxy(char **args, int *cur_arg, |
| 677 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 678 | { |
| 679 | return srv_disable_pp_flags(newsrv, SRV_PP_V1); |
| 680 | } |
| 681 | |
| 682 | /* Parse the "no-send-proxy-v2" server keyword */ |
| 683 | static int srv_parse_no_send_proxy_v2(char **args, int *cur_arg, |
| 684 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 685 | { |
| 686 | return srv_disable_pp_flags(newsrv, SRV_PP_V2); |
| 687 | } |
| 688 | |
Frédéric Lécaille | 1b9423d | 2019-07-04 14:19:06 +0200 | [diff] [blame] | 689 | /* Parse the "no-tfo" server keyword */ |
| 690 | static int srv_parse_no_tfo(char **args, int *cur_arg, |
| 691 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 692 | { |
| 693 | newsrv->flags &= ~SRV_F_FASTOPEN; |
| 694 | return 0; |
| 695 | } |
| 696 | |
Frédéric Lécaille | f9bc1d6 | 2017-03-10 15:50:49 +0100 | [diff] [blame] | 697 | /* Parse the "non-stick" server keyword */ |
| 698 | static int srv_parse_non_stick(char **args, int *cur_arg, |
| 699 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 700 | { |
| 701 | newsrv->flags |= SRV_F_NON_STICK; |
| 702 | return 0; |
| 703 | } |
| 704 | |
Frédéric Lécaille | 31045e4 | 2017-03-10 16:40:00 +0100 | [diff] [blame] | 705 | /* Enable server PROXY protocol flags. */ |
Willy Tarreau | 0e492e2 | 2019-04-15 21:25:03 +0200 | [diff] [blame] | 706 | static inline int srv_enable_pp_flags(struct server *srv, unsigned int flags) |
Frédéric Lécaille | 31045e4 | 2017-03-10 16:40:00 +0100 | [diff] [blame] | 707 | { |
| 708 | srv->pp_opts |= flags; |
| 709 | return 0; |
| 710 | } |
Christopher Faulet | 8ed0a3e | 2018-04-10 14:45:45 +0200 | [diff] [blame] | 711 | /* parse the "proto" server keyword */ |
| 712 | static int srv_parse_proto(char **args, int *cur_arg, |
| 713 | struct proxy *px, struct server *newsrv, char **err) |
| 714 | { |
| 715 | struct ist proto; |
| 716 | |
| 717 | if (!*args[*cur_arg + 1]) { |
| 718 | memprintf(err, "'%s' : missing value", args[*cur_arg]); |
| 719 | return ERR_ALERT | ERR_FATAL; |
| 720 | } |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 721 | proto = ist(args[*cur_arg + 1]); |
Christopher Faulet | 8ed0a3e | 2018-04-10 14:45:45 +0200 | [diff] [blame] | 722 | newsrv->mux_proto = get_mux_proto(proto); |
| 723 | if (!newsrv->mux_proto) { |
| 724 | memprintf(err, "'%s' : unknown MUX protocol '%s'", args[*cur_arg], args[*cur_arg+1]); |
| 725 | return ERR_ALERT | ERR_FATAL; |
| 726 | } |
Christopher Faulet | 8ed0a3e | 2018-04-10 14:45:45 +0200 | [diff] [blame] | 727 | return 0; |
| 728 | } |
Frédéric Lécaille | 31045e4 | 2017-03-10 16:40:00 +0100 | [diff] [blame] | 729 | |
Emmanuel Hocdet | f643b80 | 2018-02-01 15:20:32 +0100 | [diff] [blame] | 730 | /* parse the "proxy-v2-options" */ |
| 731 | static int srv_parse_proxy_v2_options(char **args, int *cur_arg, |
| 732 | struct proxy *px, struct server *newsrv, char **err) |
| 733 | { |
| 734 | char *p, *n; |
| 735 | for (p = args[*cur_arg+1]; p; p = n) { |
| 736 | n = strchr(p, ','); |
| 737 | if (n) |
| 738 | *n++ = '\0'; |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 739 | if (strcmp(p, "ssl") == 0) { |
Emmanuel Hocdet | f643b80 | 2018-02-01 15:20:32 +0100 | [diff] [blame] | 740 | newsrv->pp_opts |= SRV_PP_V2_SSL; |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 741 | } else if (strcmp(p, "cert-cn") == 0) { |
Emmanuel Hocdet | f643b80 | 2018-02-01 15:20:32 +0100 | [diff] [blame] | 742 | newsrv->pp_opts |= SRV_PP_V2_SSL; |
| 743 | newsrv->pp_opts |= SRV_PP_V2_SSL_CN; |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 744 | } else if (strcmp(p, "cert-key") == 0) { |
Emmanuel Hocdet | fa8d0f1 | 2018-02-01 15:53:52 +0100 | [diff] [blame] | 745 | newsrv->pp_opts |= SRV_PP_V2_SSL; |
| 746 | newsrv->pp_opts |= SRV_PP_V2_SSL_KEY_ALG; |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 747 | } else if (strcmp(p, "cert-sig") == 0) { |
Emmanuel Hocdet | fa8d0f1 | 2018-02-01 15:53:52 +0100 | [diff] [blame] | 748 | newsrv->pp_opts |= SRV_PP_V2_SSL; |
| 749 | newsrv->pp_opts |= SRV_PP_V2_SSL_SIG_ALG; |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 750 | } else if (strcmp(p, "ssl-cipher") == 0) { |
Emmanuel Hocdet | fa8d0f1 | 2018-02-01 15:53:52 +0100 | [diff] [blame] | 751 | newsrv->pp_opts |= SRV_PP_V2_SSL; |
| 752 | newsrv->pp_opts |= SRV_PP_V2_SSL_CIPHER; |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 753 | } else if (strcmp(p, "authority") == 0) { |
Emmanuel Hocdet | 253c3b7 | 2018-02-01 18:29:59 +0100 | [diff] [blame] | 754 | newsrv->pp_opts |= SRV_PP_V2_AUTHORITY; |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 755 | } else if (strcmp(p, "crc32c") == 0) { |
Emmanuel Hocdet | 4399c75 | 2018-02-05 15:26:43 +0100 | [diff] [blame] | 756 | newsrv->pp_opts |= SRV_PP_V2_CRC32C; |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 757 | } else if (strcmp(p, "unique-id") == 0) { |
Tim Duesterhus | cf6e0c8 | 2020-03-13 12:34:24 +0100 | [diff] [blame] | 758 | newsrv->pp_opts |= SRV_PP_V2_UNIQUE_ID; |
Emmanuel Hocdet | f643b80 | 2018-02-01 15:20:32 +0100 | [diff] [blame] | 759 | } else |
| 760 | goto fail; |
| 761 | } |
| 762 | return 0; |
| 763 | fail: |
| 764 | if (err) |
| 765 | memprintf(err, "'%s' : proxy v2 option not implemented", p); |
| 766 | return ERR_ALERT | ERR_FATAL; |
| 767 | } |
| 768 | |
Frédéric Lécaille | 547356e | 2017-03-15 08:55:39 +0100 | [diff] [blame] | 769 | /* Parse the "observe" server keyword */ |
| 770 | static int srv_parse_observe(char **args, int *cur_arg, |
| 771 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 772 | { |
| 773 | char *arg; |
| 774 | |
| 775 | arg = args[*cur_arg + 1]; |
| 776 | if (!*arg) { |
| 777 | memprintf(err, "'%s' expects <mode> as argument.\n", args[*cur_arg]); |
| 778 | return ERR_ALERT | ERR_FATAL; |
| 779 | } |
| 780 | |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 781 | if (strcmp(arg, "none") == 0) { |
Frédéric Lécaille | 547356e | 2017-03-15 08:55:39 +0100 | [diff] [blame] | 782 | newsrv->observe = HANA_OBS_NONE; |
| 783 | } |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 784 | else if (strcmp(arg, "layer4") == 0) { |
Frédéric Lécaille | 547356e | 2017-03-15 08:55:39 +0100 | [diff] [blame] | 785 | newsrv->observe = HANA_OBS_LAYER4; |
| 786 | } |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 787 | else if (strcmp(arg, "layer7") == 0) { |
Frédéric Lécaille | 547356e | 2017-03-15 08:55:39 +0100 | [diff] [blame] | 788 | if (curproxy->mode != PR_MODE_HTTP) { |
| 789 | memprintf(err, "'%s' can only be used in http proxies.\n", arg); |
| 790 | return ERR_ALERT; |
| 791 | } |
| 792 | newsrv->observe = HANA_OBS_LAYER7; |
| 793 | } |
| 794 | else { |
| 795 | memprintf(err, "'%s' expects one of 'none', 'layer4', 'layer7' " |
| 796 | "but got '%s'\n", args[*cur_arg], arg); |
| 797 | return ERR_ALERT | ERR_FATAL; |
| 798 | } |
| 799 | |
| 800 | return 0; |
| 801 | } |
| 802 | |
Amaury Denoyelle | 587b71e | 2021-03-10 16:36:02 +0100 | [diff] [blame] | 803 | /* Parse the "on-error" server keyword */ |
| 804 | static int srv_parse_on_error(char **args, int *cur_arg, |
| 805 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 806 | { |
| 807 | if (strcmp(args[*cur_arg + 1], "fastinter") == 0) |
| 808 | newsrv->onerror = HANA_ONERR_FASTINTER; |
| 809 | else if (strcmp(args[*cur_arg + 1], "fail-check") == 0) |
| 810 | newsrv->onerror = HANA_ONERR_FAILCHK; |
| 811 | else if (strcmp(args[*cur_arg + 1], "sudden-death") == 0) |
| 812 | newsrv->onerror = HANA_ONERR_SUDDTH; |
| 813 | else if (strcmp(args[*cur_arg + 1], "mark-down") == 0) |
| 814 | newsrv->onerror = HANA_ONERR_MARKDWN; |
| 815 | else { |
| 816 | memprintf(err, "'%s' expects one of 'fastinter', " |
| 817 | "'fail-check', 'sudden-death' or 'mark-down' but got '%s'", |
| 818 | args[*cur_arg], args[*cur_arg + 1]); |
| 819 | return ERR_ALERT | ERR_FATAL; |
| 820 | } |
| 821 | |
| 822 | return 0; |
| 823 | } |
| 824 | |
| 825 | /* Parse the "on-marked-down" server keyword */ |
| 826 | static int srv_parse_on_marked_down(char **args, int *cur_arg, |
| 827 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 828 | { |
| 829 | if (strcmp(args[*cur_arg + 1], "shutdown-sessions") == 0) |
| 830 | newsrv->onmarkeddown = HANA_ONMARKEDDOWN_SHUTDOWNSESSIONS; |
| 831 | else { |
| 832 | memprintf(err, "'%s' expects 'shutdown-sessions' but got '%s'", |
| 833 | args[*cur_arg], args[*cur_arg + 1]); |
| 834 | return ERR_ALERT | ERR_FATAL; |
| 835 | } |
| 836 | |
| 837 | return 0; |
| 838 | } |
| 839 | |
| 840 | /* Parse the "on-marked-up" server keyword */ |
| 841 | static int srv_parse_on_marked_up(char **args, int *cur_arg, |
| 842 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 843 | { |
| 844 | if (strcmp(args[*cur_arg + 1], "shutdown-backup-sessions") == 0) |
| 845 | newsrv->onmarkedup = HANA_ONMARKEDUP_SHUTDOWNBACKUPSESSIONS; |
| 846 | else { |
| 847 | memprintf(err, "'%s' expects 'shutdown-backup-sessions' but got '%s'", |
| 848 | args[*cur_arg], args[*cur_arg + 1]); |
| 849 | return ERR_ALERT | ERR_FATAL; |
| 850 | } |
| 851 | |
| 852 | return 0; |
| 853 | } |
| 854 | |
Frédéric Lécaille | 1618623 | 2017-03-14 16:42:49 +0100 | [diff] [blame] | 855 | /* Parse the "redir" server keyword */ |
| 856 | static int srv_parse_redir(char **args, int *cur_arg, |
| 857 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 858 | { |
| 859 | char *arg; |
| 860 | |
| 861 | arg = args[*cur_arg + 1]; |
| 862 | if (!*arg) { |
| 863 | memprintf(err, "'%s' expects <prefix> as argument.\n", args[*cur_arg]); |
| 864 | return ERR_ALERT | ERR_FATAL; |
| 865 | } |
| 866 | |
| 867 | free(newsrv->rdr_pfx); |
| 868 | newsrv->rdr_pfx = strdup(arg); |
| 869 | newsrv->rdr_len = strlen(arg); |
| 870 | |
| 871 | return 0; |
| 872 | } |
| 873 | |
Amaury Denoyelle | 587b71e | 2021-03-10 16:36:02 +0100 | [diff] [blame] | 874 | /* Parse the "resolvers" server keyword */ |
| 875 | static int srv_parse_resolvers(char **args, int *cur_arg, |
| 876 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 877 | { |
| 878 | free(newsrv->resolvers_id); |
| 879 | newsrv->resolvers_id = strdup(args[*cur_arg + 1]); |
| 880 | return 0; |
| 881 | } |
| 882 | |
| 883 | /* Parse the "resolve-net" server keyword */ |
| 884 | static int srv_parse_resolve_net(char **args, int *cur_arg, |
| 885 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 886 | { |
| 887 | char *p, *e; |
| 888 | unsigned char mask; |
| 889 | struct resolv_options *opt; |
| 890 | |
| 891 | if (!args[*cur_arg + 1] || args[*cur_arg + 1][0] == '\0') { |
| 892 | memprintf(err, "'%s' expects a list of networks.", |
| 893 | args[*cur_arg]); |
| 894 | return ERR_ALERT | ERR_FATAL; |
| 895 | } |
| 896 | |
| 897 | opt = &newsrv->resolv_opts; |
| 898 | |
| 899 | /* Split arguments by comma, and convert it from ipv4 or ipv6 |
| 900 | * string network in in_addr or in6_addr. |
| 901 | */ |
| 902 | p = args[*cur_arg + 1]; |
| 903 | e = p; |
| 904 | while (*p != '\0') { |
| 905 | /* If no room available, return error. */ |
| 906 | if (opt->pref_net_nb >= SRV_MAX_PREF_NET) { |
| 907 | memprintf(err, "'%s' exceed %d networks.", |
| 908 | args[*cur_arg], SRV_MAX_PREF_NET); |
| 909 | return ERR_ALERT | ERR_FATAL; |
| 910 | } |
| 911 | /* look for end or comma. */ |
| 912 | while (*e != ',' && *e != '\0') |
| 913 | e++; |
| 914 | if (*e == ',') { |
| 915 | *e = '\0'; |
| 916 | e++; |
| 917 | } |
| 918 | if (str2net(p, 0, &opt->pref_net[opt->pref_net_nb].addr.in4, |
| 919 | &opt->pref_net[opt->pref_net_nb].mask.in4)) { |
| 920 | /* Try to convert input string from ipv4 or ipv6 network. */ |
| 921 | opt->pref_net[opt->pref_net_nb].family = AF_INET; |
| 922 | } else if (str62net(p, &opt->pref_net[opt->pref_net_nb].addr.in6, |
| 923 | &mask)) { |
| 924 | /* Try to convert input string from ipv6 network. */ |
| 925 | len2mask6(mask, &opt->pref_net[opt->pref_net_nb].mask.in6); |
| 926 | opt->pref_net[opt->pref_net_nb].family = AF_INET6; |
| 927 | } else { |
| 928 | /* All network conversions fail, return error. */ |
| 929 | memprintf(err, "'%s' invalid network '%s'.", |
| 930 | args[*cur_arg], p); |
| 931 | return ERR_ALERT | ERR_FATAL; |
| 932 | } |
| 933 | opt->pref_net_nb++; |
| 934 | p = e; |
| 935 | } |
| 936 | |
| 937 | return 0; |
| 938 | } |
| 939 | |
| 940 | /* Parse the "resolve-opts" server keyword */ |
| 941 | static int srv_parse_resolve_opts(char **args, int *cur_arg, |
| 942 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 943 | { |
| 944 | char *p, *end; |
| 945 | |
| 946 | for (p = args[*cur_arg + 1]; *p; p = end) { |
| 947 | /* cut on next comma */ |
| 948 | for (end = p; *end && *end != ','; end++); |
| 949 | if (*end) |
| 950 | *(end++) = 0; |
| 951 | |
| 952 | if (strcmp(p, "allow-dup-ip") == 0) { |
| 953 | newsrv->resolv_opts.accept_duplicate_ip = 1; |
| 954 | } |
| 955 | else if (strcmp(p, "ignore-weight") == 0) { |
| 956 | newsrv->resolv_opts.ignore_weight = 1; |
| 957 | } |
| 958 | else if (strcmp(p, "prevent-dup-ip") == 0) { |
| 959 | newsrv->resolv_opts.accept_duplicate_ip = 0; |
| 960 | } |
| 961 | else { |
| 962 | memprintf(err, "'%s' : unknown resolve-opts option '%s', supported methods are 'allow-dup-ip', 'ignore-weight', and 'prevent-dup-ip'.", |
| 963 | args[*cur_arg], p); |
| 964 | return ERR_ALERT | ERR_FATAL; |
| 965 | } |
| 966 | } |
| 967 | |
| 968 | return 0; |
| 969 | } |
| 970 | |
| 971 | /* Parse the "resolve-prefer" server keyword */ |
| 972 | static int srv_parse_resolve_prefer(char **args, int *cur_arg, |
| 973 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 974 | { |
| 975 | if (strcmp(args[*cur_arg + 1], "ipv4") == 0) |
| 976 | newsrv->resolv_opts.family_prio = AF_INET; |
| 977 | else if (strcmp(args[*cur_arg + 1], "ipv6") == 0) |
| 978 | newsrv->resolv_opts.family_prio = AF_INET6; |
| 979 | else { |
| 980 | memprintf(err, "'%s' expects either ipv4 or ipv6 as argument.", |
| 981 | args[*cur_arg]); |
| 982 | return ERR_ALERT | ERR_FATAL; |
| 983 | } |
| 984 | |
| 985 | return 0; |
| 986 | } |
| 987 | |
Frédéric Lécaille | 31045e4 | 2017-03-10 16:40:00 +0100 | [diff] [blame] | 988 | /* Parse the "send-proxy" server keyword */ |
| 989 | static int srv_parse_send_proxy(char **args, int *cur_arg, |
| 990 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 991 | { |
| 992 | return srv_enable_pp_flags(newsrv, SRV_PP_V1); |
| 993 | } |
| 994 | |
| 995 | /* Parse the "send-proxy-v2" server keyword */ |
| 996 | static int srv_parse_send_proxy_v2(char **args, int *cur_arg, |
| 997 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 998 | { |
| 999 | return srv_enable_pp_flags(newsrv, SRV_PP_V2); |
| 1000 | } |
| 1001 | |
Amaury Denoyelle | 587b71e | 2021-03-10 16:36:02 +0100 | [diff] [blame] | 1002 | /* Parse the "slowstart" server keyword */ |
| 1003 | static int srv_parse_slowstart(char **args, int *cur_arg, |
| 1004 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 1005 | { |
| 1006 | /* slowstart is stored in seconds */ |
| 1007 | unsigned int val; |
| 1008 | const char *time_err = parse_time_err(args[*cur_arg + 1], &val, TIME_UNIT_MS); |
| 1009 | |
| 1010 | if (time_err == PARSE_TIME_OVER) { |
| 1011 | memprintf(err, "overflow in argument <%s> to <%s> of server %s, maximum value is 2147483647 ms (~24.8 days).", |
| 1012 | args[*cur_arg+1], args[*cur_arg], newsrv->id); |
| 1013 | return ERR_ALERT | ERR_FATAL; |
| 1014 | } |
| 1015 | else if (time_err == PARSE_TIME_UNDER) { |
| 1016 | memprintf(err, "underflow in argument <%s> to <%s> of server %s, minimum non-null value is 1 ms.", |
| 1017 | args[*cur_arg+1], args[*cur_arg], newsrv->id); |
| 1018 | return ERR_ALERT | ERR_FATAL; |
| 1019 | } |
| 1020 | else if (time_err) { |
| 1021 | memprintf(err, "unexpected character '%c' in 'slowstart' argument of server %s.", |
| 1022 | *time_err, newsrv->id); |
| 1023 | return ERR_ALERT | ERR_FATAL; |
| 1024 | } |
| 1025 | newsrv->slowstart = (val + 999) / 1000; |
| 1026 | |
| 1027 | return 0; |
| 1028 | } |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1029 | |
| 1030 | /* Parse the "source" server keyword */ |
| 1031 | static int srv_parse_source(char **args, int *cur_arg, |
| 1032 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 1033 | { |
| 1034 | char *errmsg; |
| 1035 | int port_low, port_high; |
| 1036 | struct sockaddr_storage *sk; |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1037 | |
| 1038 | errmsg = NULL; |
| 1039 | |
| 1040 | if (!*args[*cur_arg + 1]) { |
| 1041 | memprintf(err, "'%s' expects <addr>[:<port>[-<port>]], and optionally '%s' <addr>, " |
| 1042 | "and '%s' <name> as argument.\n", args[*cur_arg], "usesrc", "interface"); |
| 1043 | goto err; |
| 1044 | } |
| 1045 | |
| 1046 | /* 'sk' is statically allocated (no need to be freed). */ |
Willy Tarreau | 65ec4e3 | 2020-09-16 19:17:08 +0200 | [diff] [blame] | 1047 | sk = str2sa_range(args[*cur_arg + 1], NULL, &port_low, &port_high, NULL, NULL, |
| 1048 | &errmsg, NULL, NULL, |
| 1049 | PA_O_RESOLVE | PA_O_PORT_OK | PA_O_PORT_RANGE | PA_O_STREAM | PA_O_CONNECT); |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1050 | if (!sk) { |
| 1051 | memprintf(err, "'%s %s' : %s\n", args[*cur_arg], args[*cur_arg + 1], errmsg); |
| 1052 | goto err; |
| 1053 | } |
| 1054 | |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1055 | newsrv->conn_src.opts |= CO_SRC_BIND; |
| 1056 | newsrv->conn_src.source_addr = *sk; |
| 1057 | |
| 1058 | if (port_low != port_high) { |
| 1059 | int i; |
| 1060 | |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1061 | newsrv->conn_src.sport_range = port_range_alloc_range(port_high - port_low + 1); |
Remi Tricot-Le Breton | dc18791 | 2021-05-12 09:44:06 +0200 | [diff] [blame] | 1062 | if (!newsrv->conn_src.sport_range) { |
| 1063 | ha_alert("Server '%s': Out of memory (sport_range)\n", args[0]); |
| 1064 | goto err; |
| 1065 | } |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1066 | for (i = 0; i < newsrv->conn_src.sport_range->size; i++) |
| 1067 | newsrv->conn_src.sport_range->ports[i] = port_low + i; |
| 1068 | } |
| 1069 | |
| 1070 | *cur_arg += 2; |
| 1071 | while (*(args[*cur_arg])) { |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 1072 | if (strcmp(args[*cur_arg], "usesrc") == 0) { /* address to use outside */ |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1073 | #if defined(CONFIG_HAP_TRANSPARENT) |
| 1074 | if (!*args[*cur_arg + 1]) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1075 | ha_alert("'usesrc' expects <addr>[:<port>], 'client', 'clientip', " |
| 1076 | "or 'hdr_ip(name,#)' as argument.\n"); |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1077 | goto err; |
| 1078 | } |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 1079 | if (strcmp(args[*cur_arg + 1], "client") == 0) { |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1080 | newsrv->conn_src.opts &= ~CO_SRC_TPROXY_MASK; |
| 1081 | newsrv->conn_src.opts |= CO_SRC_TPROXY_CLI; |
| 1082 | } |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 1083 | else if (strcmp(args[*cur_arg + 1], "clientip") == 0) { |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1084 | newsrv->conn_src.opts &= ~CO_SRC_TPROXY_MASK; |
| 1085 | newsrv->conn_src.opts |= CO_SRC_TPROXY_CIP; |
| 1086 | } |
| 1087 | else if (!strncmp(args[*cur_arg + 1], "hdr_ip(", 7)) { |
| 1088 | char *name, *end; |
| 1089 | |
| 1090 | name = args[*cur_arg + 1] + 7; |
Willy Tarreau | 9080711 | 2020-02-25 08:16:33 +0100 | [diff] [blame] | 1091 | while (isspace((unsigned char)*name)) |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1092 | name++; |
| 1093 | |
| 1094 | end = name; |
Willy Tarreau | 9080711 | 2020-02-25 08:16:33 +0100 | [diff] [blame] | 1095 | while (*end && !isspace((unsigned char)*end) && *end != ',' && *end != ')') |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1096 | end++; |
| 1097 | |
| 1098 | newsrv->conn_src.opts &= ~CO_SRC_TPROXY_MASK; |
| 1099 | newsrv->conn_src.opts |= CO_SRC_TPROXY_DYN; |
| 1100 | free(newsrv->conn_src.bind_hdr_name); |
| 1101 | newsrv->conn_src.bind_hdr_name = calloc(1, end - name + 1); |
Remi Tricot-Le Breton | dc18791 | 2021-05-12 09:44:06 +0200 | [diff] [blame] | 1102 | if (!newsrv->conn_src.bind_hdr_name) { |
| 1103 | ha_alert("Server '%s': Out of memory (bind_hdr_name)\n", args[0]); |
| 1104 | goto err; |
| 1105 | } |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1106 | newsrv->conn_src.bind_hdr_len = end - name; |
| 1107 | memcpy(newsrv->conn_src.bind_hdr_name, name, end - name); |
| 1108 | newsrv->conn_src.bind_hdr_name[end - name] = '\0'; |
| 1109 | newsrv->conn_src.bind_hdr_occ = -1; |
| 1110 | |
| 1111 | /* now look for an occurrence number */ |
Willy Tarreau | 9080711 | 2020-02-25 08:16:33 +0100 | [diff] [blame] | 1112 | while (isspace((unsigned char)*end)) |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1113 | end++; |
| 1114 | if (*end == ',') { |
| 1115 | end++; |
| 1116 | name = end; |
| 1117 | if (*end == '-') |
| 1118 | end++; |
Willy Tarreau | 9080711 | 2020-02-25 08:16:33 +0100 | [diff] [blame] | 1119 | while (isdigit((unsigned char)*end)) |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1120 | end++; |
| 1121 | newsrv->conn_src.bind_hdr_occ = strl2ic(name, end - name); |
| 1122 | } |
| 1123 | |
| 1124 | if (newsrv->conn_src.bind_hdr_occ < -MAX_HDR_HISTORY) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1125 | ha_alert("usesrc hdr_ip(name,num) does not support negative" |
| 1126 | " occurrences values smaller than %d.\n", MAX_HDR_HISTORY); |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1127 | goto err; |
| 1128 | } |
| 1129 | } |
| 1130 | else { |
| 1131 | struct sockaddr_storage *sk; |
| 1132 | int port1, port2; |
| 1133 | |
| 1134 | /* 'sk' is statically allocated (no need to be freed). */ |
Willy Tarreau | 65ec4e3 | 2020-09-16 19:17:08 +0200 | [diff] [blame] | 1135 | sk = str2sa_range(args[*cur_arg + 1], NULL, &port1, &port2, NULL, NULL, |
| 1136 | &errmsg, NULL, NULL, |
| 1137 | PA_O_RESOLVE | PA_O_PORT_OK | PA_O_STREAM | PA_O_CONNECT); |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1138 | if (!sk) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1139 | ha_alert("'%s %s' : %s\n", args[*cur_arg], args[*cur_arg + 1], errmsg); |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1140 | goto err; |
| 1141 | } |
| 1142 | |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1143 | newsrv->conn_src.tproxy_addr = *sk; |
| 1144 | newsrv->conn_src.opts |= CO_SRC_TPROXY_ADDR; |
| 1145 | } |
| 1146 | global.last_checks |= LSTCHK_NETADM; |
| 1147 | *cur_arg += 2; |
| 1148 | continue; |
| 1149 | #else /* no TPROXY support */ |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1150 | ha_alert("'usesrc' not allowed here because support for TPROXY was not compiled in.\n"); |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1151 | goto err; |
| 1152 | #endif /* defined(CONFIG_HAP_TRANSPARENT) */ |
| 1153 | } /* "usesrc" */ |
| 1154 | |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 1155 | if (strcmp(args[*cur_arg], "interface") == 0) { /* specifically bind to this interface */ |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1156 | #ifdef SO_BINDTODEVICE |
| 1157 | if (!*args[*cur_arg + 1]) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1158 | ha_alert("'%s' : missing interface name.\n", args[0]); |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1159 | goto err; |
| 1160 | } |
| 1161 | free(newsrv->conn_src.iface_name); |
| 1162 | newsrv->conn_src.iface_name = strdup(args[*cur_arg + 1]); |
| 1163 | newsrv->conn_src.iface_len = strlen(newsrv->conn_src.iface_name); |
| 1164 | global.last_checks |= LSTCHK_NETADM; |
| 1165 | #else |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1166 | ha_alert("'%s' : '%s' option not implemented.\n", args[0], args[*cur_arg]); |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1167 | goto err; |
| 1168 | #endif |
| 1169 | *cur_arg += 2; |
| 1170 | continue; |
| 1171 | } |
| 1172 | /* this keyword in not an option of "source" */ |
| 1173 | break; |
| 1174 | } /* while */ |
| 1175 | |
| 1176 | return 0; |
| 1177 | |
| 1178 | err: |
| 1179 | free(errmsg); |
| 1180 | return ERR_ALERT | ERR_FATAL; |
| 1181 | } |
| 1182 | |
Frédéric Lécaille | f9bc1d6 | 2017-03-10 15:50:49 +0100 | [diff] [blame] | 1183 | /* Parse the "stick" server keyword */ |
| 1184 | static int srv_parse_stick(char **args, int *cur_arg, |
| 1185 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 1186 | { |
| 1187 | newsrv->flags &= ~SRV_F_NON_STICK; |
| 1188 | return 0; |
| 1189 | } |
| 1190 | |
Frédéric Lécaille | 67e0e61 | 2017-03-14 15:21:31 +0100 | [diff] [blame] | 1191 | /* Parse the "track" server keyword */ |
| 1192 | static int srv_parse_track(char **args, int *cur_arg, |
| 1193 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 1194 | { |
| 1195 | char *arg; |
| 1196 | |
| 1197 | arg = args[*cur_arg + 1]; |
| 1198 | if (!*arg) { |
| 1199 | memprintf(err, "'track' expects [<proxy>/]<server> as argument.\n"); |
| 1200 | return ERR_ALERT | ERR_FATAL; |
| 1201 | } |
| 1202 | |
| 1203 | free(newsrv->trackit); |
| 1204 | newsrv->trackit = strdup(arg); |
| 1205 | |
| 1206 | return 0; |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 1207 | } |
| 1208 | |
| 1209 | /* Parse the "socks4" server keyword */ |
| 1210 | static int srv_parse_socks4(char **args, int *cur_arg, |
| 1211 | struct proxy *curproxy, struct server *newsrv, char **err) |
| 1212 | { |
| 1213 | char *errmsg; |
| 1214 | int port_low, port_high; |
| 1215 | struct sockaddr_storage *sk; |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 1216 | |
| 1217 | errmsg = NULL; |
| 1218 | |
| 1219 | if (!*args[*cur_arg + 1]) { |
| 1220 | memprintf(err, "'%s' expects <addr>:<port> as argument.\n", args[*cur_arg]); |
| 1221 | goto err; |
| 1222 | } |
| 1223 | |
| 1224 | /* 'sk' is statically allocated (no need to be freed). */ |
Willy Tarreau | 65ec4e3 | 2020-09-16 19:17:08 +0200 | [diff] [blame] | 1225 | sk = str2sa_range(args[*cur_arg + 1], NULL, &port_low, &port_high, NULL, NULL, |
| 1226 | &errmsg, NULL, NULL, |
| 1227 | PA_O_RESOLVE | PA_O_PORT_OK | PA_O_PORT_MAND | PA_O_STREAM | PA_O_CONNECT); |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 1228 | if (!sk) { |
| 1229 | memprintf(err, "'%s %s' : %s\n", args[*cur_arg], args[*cur_arg + 1], errmsg); |
| 1230 | goto err; |
| 1231 | } |
| 1232 | |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 1233 | newsrv->flags |= SRV_F_SOCKS4_PROXY; |
| 1234 | newsrv->socks4_addr = *sk; |
| 1235 | |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 1236 | return 0; |
| 1237 | |
| 1238 | err: |
| 1239 | free(errmsg); |
| 1240 | return ERR_ALERT | ERR_FATAL; |
Frédéric Lécaille | 67e0e61 | 2017-03-14 15:21:31 +0100 | [diff] [blame] | 1241 | } |
| 1242 | |
Frédéric Lécaille | dba9707 | 2017-03-17 15:33:50 +0100 | [diff] [blame] | 1243 | |
Willy Tarreau | 034c88c | 2017-01-23 23:36:45 +0100 | [diff] [blame] | 1244 | /* parse the "tfo" server keyword */ |
| 1245 | static int srv_parse_tfo(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err) |
| 1246 | { |
| 1247 | newsrv->flags |= SRV_F_FASTOPEN; |
| 1248 | return 0; |
| 1249 | } |
| 1250 | |
Amaury Denoyelle | 587b71e | 2021-03-10 16:36:02 +0100 | [diff] [blame] | 1251 | /* parse the "usesrc" server keyword */ |
| 1252 | static int srv_parse_usesrc(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err) |
| 1253 | { |
| 1254 | memprintf(err, "'%s' only allowed after a '%s' statement.", |
| 1255 | "usesrc", "source"); |
| 1256 | return ERR_ALERT | ERR_FATAL; |
| 1257 | } |
| 1258 | |
| 1259 | /* parse the "weight" server keyword */ |
| 1260 | static int srv_parse_weight(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err) |
| 1261 | { |
| 1262 | int w; |
| 1263 | |
| 1264 | w = atol(args[*cur_arg + 1]); |
| 1265 | if (w < 0 || w > SRV_UWGHT_MAX) { |
| 1266 | memprintf(err, "weight of server %s is not within 0 and %d (%d).", |
| 1267 | newsrv->id, SRV_UWGHT_MAX, w); |
| 1268 | return ERR_ALERT | ERR_FATAL; |
| 1269 | } |
| 1270 | newsrv->uweight = newsrv->iweight = w; |
| 1271 | |
| 1272 | return 0; |
| 1273 | } |
| 1274 | |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1275 | /* Shutdown all connections of a server. The caller must pass a termination |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1276 | * code in <why>, which must be one of SF_ERR_* indicating the reason for the |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1277 | * shutdown. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 1278 | * |
| 1279 | * Must be called with the server lock held. |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1280 | */ |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1281 | void srv_shutdown_streams(struct server *srv, int why) |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1282 | { |
Willy Tarreau | 751153e | 2021-02-17 13:33:24 +0100 | [diff] [blame] | 1283 | struct stream *stream; |
| 1284 | struct mt_list *elt1, elt2; |
Willy Tarreau | d4e78d8 | 2021-03-04 10:47:54 +0100 | [diff] [blame] | 1285 | int thr; |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1286 | |
Willy Tarreau | d4e78d8 | 2021-03-04 10:47:54 +0100 | [diff] [blame] | 1287 | for (thr = 0; thr < global.nbthread; thr++) |
| 1288 | mt_list_for_each_entry_safe(stream, &srv->per_thr[thr].streams, by_srv, elt1, elt2) |
| 1289 | if (stream->srv_conn == srv) |
| 1290 | stream_shutdown(stream, why); |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1291 | } |
| 1292 | |
| 1293 | /* Shutdown all connections of all backup servers of a proxy. The caller must |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1294 | * pass a termination code in <why>, which must be one of SF_ERR_* indicating |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1295 | * the reason for the shutdown. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 1296 | * |
| 1297 | * Must be called with the server lock held. |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1298 | */ |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1299 | void srv_shutdown_backup_streams(struct proxy *px, int why) |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1300 | { |
| 1301 | struct server *srv; |
| 1302 | |
| 1303 | for (srv = px->srv; srv != NULL; srv = srv->next) |
| 1304 | if (srv->flags & SRV_F_BACKUP) |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1305 | srv_shutdown_streams(srv, why); |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1306 | } |
| 1307 | |
Willy Tarreau | bda9227 | 2014-05-20 21:55:30 +0200 | [diff] [blame] | 1308 | /* Appends some information to a message string related to a server going UP or |
| 1309 | * DOWN. If both <forced> and <reason> are null and the server tracks another |
| 1310 | * one, a "via" information will be provided to know where the status came from. |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1311 | * If <check> is non-null, an entire string describing the check result will be |
| 1312 | * appended after a comma and a space (eg: to report some information from the |
| 1313 | * check that changed the state). In the other case, the string will be built |
| 1314 | * using the check results stored into the struct server if present. |
| 1315 | * If <xferred> is non-negative, some information about requeued sessions are |
Willy Tarreau | bda9227 | 2014-05-20 21:55:30 +0200 | [diff] [blame] | 1316 | * provided. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 1317 | * |
| 1318 | * Must be called with the server lock held. |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1319 | */ |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 1320 | void srv_append_status(struct buffer *msg, struct server *s, |
| 1321 | struct check *check, int xferred, int forced) |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1322 | { |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1323 | short status = s->op_st_chg.status; |
| 1324 | short code = s->op_st_chg.code; |
| 1325 | long duration = s->op_st_chg.duration; |
| 1326 | char *desc = s->op_st_chg.reason; |
| 1327 | |
| 1328 | if (check) { |
| 1329 | status = check->status; |
| 1330 | code = check->code; |
| 1331 | duration = check->duration; |
| 1332 | desc = check->desc; |
| 1333 | } |
| 1334 | |
| 1335 | if (status != -1) { |
| 1336 | chunk_appendf(msg, ", reason: %s", get_check_status_description(status)); |
| 1337 | |
| 1338 | if (status >= HCHK_STATUS_L57DATA) |
| 1339 | chunk_appendf(msg, ", code: %d", code); |
| 1340 | |
| 1341 | if (desc && *desc) { |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 1342 | struct buffer src; |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1343 | |
| 1344 | chunk_appendf(msg, ", info: \""); |
| 1345 | |
| 1346 | chunk_initlen(&src, desc, 0, strlen(desc)); |
| 1347 | chunk_asciiencode(msg, &src, '"'); |
| 1348 | |
| 1349 | chunk_appendf(msg, "\""); |
| 1350 | } |
| 1351 | |
| 1352 | if (duration >= 0) |
| 1353 | chunk_appendf(msg, ", check duration: %ldms", duration); |
| 1354 | } |
| 1355 | else if (desc && *desc) { |
| 1356 | chunk_appendf(msg, ", %s", desc); |
| 1357 | } |
| 1358 | else if (!forced && s->track) { |
Willy Tarreau | bda9227 | 2014-05-20 21:55:30 +0200 | [diff] [blame] | 1359 | chunk_appendf(msg, " via %s/%s", s->track->proxy->id, s->track->id); |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1360 | } |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1361 | |
| 1362 | if (xferred >= 0) { |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1363 | if (s->next_state == SRV_ST_STOPPED) |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1364 | chunk_appendf(msg, ". %d active and %d backup servers left.%s" |
| 1365 | " %d sessions active, %d requeued, %d remaining in queue", |
| 1366 | s->proxy->srv_act, s->proxy->srv_bck, |
| 1367 | (s->proxy->srv_bck && !s->proxy->srv_act) ? " Running on backup." : "", |
| 1368 | s->cur_sess, xferred, s->nbpend); |
| 1369 | else |
| 1370 | chunk_appendf(msg, ". %d active and %d backup servers online.%s" |
| 1371 | " %d sessions requeued, %d total in queue", |
| 1372 | s->proxy->srv_act, s->proxy->srv_bck, |
| 1373 | (s->proxy->srv_bck && !s->proxy->srv_act) ? " Running on backup." : "", |
| 1374 | xferred, s->nbpend); |
| 1375 | } |
| 1376 | } |
| 1377 | |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1378 | /* Marks server <s> down, regardless of its checks' statuses. The server is |
| 1379 | * registered in a list to postpone the counting of the remaining servers on |
| 1380 | * the proxy and transfers queued streams whenever possible to other servers at |
| 1381 | * a sync point. Maintenance servers are ignored. It stores the <reason> if |
| 1382 | * non-null as the reason for going down or the available data from the check |
| 1383 | * struct to recompute this reason later. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 1384 | * |
| 1385 | * Must be called with the server lock held. |
Willy Tarreau | e7d1ef1 | 2014-05-20 22:25:12 +0200 | [diff] [blame] | 1386 | */ |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1387 | void srv_set_stopped(struct server *s, const char *reason, struct check *check) |
Willy Tarreau | e7d1ef1 | 2014-05-20 22:25:12 +0200 | [diff] [blame] | 1388 | { |
| 1389 | struct server *srv; |
Willy Tarreau | e7d1ef1 | 2014-05-20 22:25:12 +0200 | [diff] [blame] | 1390 | |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 1391 | if ((s->cur_admin & SRV_ADMF_MAINT) || s->next_state == SRV_ST_STOPPED) |
Willy Tarreau | e7d1ef1 | 2014-05-20 22:25:12 +0200 | [diff] [blame] | 1392 | return; |
| 1393 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1394 | s->next_state = SRV_ST_STOPPED; |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1395 | *s->op_st_chg.reason = 0; |
| 1396 | s->op_st_chg.status = -1; |
| 1397 | if (reason) { |
| 1398 | strlcpy2(s->op_st_chg.reason, reason, sizeof(s->op_st_chg.reason)); |
| 1399 | } |
| 1400 | else if (check) { |
Willy Tarreau | 358847f | 2017-11-20 21:33:21 +0100 | [diff] [blame] | 1401 | strlcpy2(s->op_st_chg.reason, check->desc, sizeof(s->op_st_chg.reason)); |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1402 | s->op_st_chg.code = check->code; |
| 1403 | s->op_st_chg.status = check->status; |
| 1404 | s->op_st_chg.duration = check->duration; |
| 1405 | } |
Willy Tarreau | e7d1ef1 | 2014-05-20 22:25:12 +0200 | [diff] [blame] | 1406 | |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1407 | /* propagate changes */ |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1408 | srv_update_status(s); |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1409 | |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1410 | for (srv = s->trackers; srv; srv = srv->tracknext) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1411 | HA_SPIN_LOCK(SERVER_LOCK, &srv->lock); |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1412 | srv_set_stopped(srv, NULL, NULL); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1413 | HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock); |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1414 | } |
Willy Tarreau | e7d1ef1 | 2014-05-20 22:25:12 +0200 | [diff] [blame] | 1415 | } |
| 1416 | |
Willy Tarreau | dbd5e78 | 2014-05-20 22:46:35 +0200 | [diff] [blame] | 1417 | /* Marks server <s> up regardless of its checks' statuses and provided it isn't |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1418 | * in maintenance. The server is registered in a list to postpone the counting |
| 1419 | * of the remaining servers on the proxy and tries to grab requests from the |
| 1420 | * proxy at a sync point. Maintenance servers are ignored. It stores the |
| 1421 | * <reason> if non-null as the reason for going down or the available data |
| 1422 | * from the check struct to recompute this reason later. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 1423 | * |
| 1424 | * Must be called with the server lock held. |
Willy Tarreau | dbd5e78 | 2014-05-20 22:46:35 +0200 | [diff] [blame] | 1425 | */ |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1426 | void srv_set_running(struct server *s, const char *reason, struct check *check) |
Willy Tarreau | dbd5e78 | 2014-05-20 22:46:35 +0200 | [diff] [blame] | 1427 | { |
| 1428 | struct server *srv; |
Willy Tarreau | dbd5e78 | 2014-05-20 22:46:35 +0200 | [diff] [blame] | 1429 | |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 1430 | if (s->cur_admin & SRV_ADMF_MAINT) |
Willy Tarreau | dbd5e78 | 2014-05-20 22:46:35 +0200 | [diff] [blame] | 1431 | return; |
| 1432 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1433 | if (s->next_state == SRV_ST_STARTING || s->next_state == SRV_ST_RUNNING) |
Willy Tarreau | dbd5e78 | 2014-05-20 22:46:35 +0200 | [diff] [blame] | 1434 | return; |
| 1435 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1436 | s->next_state = SRV_ST_STARTING; |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1437 | *s->op_st_chg.reason = 0; |
| 1438 | s->op_st_chg.status = -1; |
| 1439 | if (reason) { |
| 1440 | strlcpy2(s->op_st_chg.reason, reason, sizeof(s->op_st_chg.reason)); |
| 1441 | } |
| 1442 | else if (check) { |
Willy Tarreau | 358847f | 2017-11-20 21:33:21 +0100 | [diff] [blame] | 1443 | strlcpy2(s->op_st_chg.reason, check->desc, sizeof(s->op_st_chg.reason)); |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1444 | s->op_st_chg.code = check->code; |
| 1445 | s->op_st_chg.status = check->status; |
| 1446 | s->op_st_chg.duration = check->duration; |
| 1447 | } |
Willy Tarreau | dbd5e78 | 2014-05-20 22:46:35 +0200 | [diff] [blame] | 1448 | |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 1449 | if (s->slowstart <= 0) |
| 1450 | s->next_state = SRV_ST_RUNNING; |
Willy Tarreau | dbd5e78 | 2014-05-20 22:46:35 +0200 | [diff] [blame] | 1451 | |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1452 | /* propagate changes */ |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1453 | srv_update_status(s); |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1454 | |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1455 | for (srv = s->trackers; srv; srv = srv->tracknext) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1456 | HA_SPIN_LOCK(SERVER_LOCK, &srv->lock); |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1457 | srv_set_running(srv, NULL, NULL); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1458 | HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock); |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1459 | } |
Willy Tarreau | dbd5e78 | 2014-05-20 22:46:35 +0200 | [diff] [blame] | 1460 | } |
| 1461 | |
Willy Tarreau | 8eb7784 | 2014-05-21 13:54:57 +0200 | [diff] [blame] | 1462 | /* Marks server <s> stopping regardless of its checks' statuses and provided it |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1463 | * isn't in maintenance. The server is registered in a list to postpone the |
| 1464 | * counting of the remaining servers on the proxy and tries to grab requests |
| 1465 | * from the proxy. Maintenance servers are ignored. It stores the |
| 1466 | * <reason> if non-null as the reason for going down or the available data |
| 1467 | * from the check struct to recompute this reason later. |
Willy Tarreau | 8eb7784 | 2014-05-21 13:54:57 +0200 | [diff] [blame] | 1468 | * up. Note that it makes use of the trash to build the log strings, so <reason> |
| 1469 | * must not be placed there. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 1470 | * |
| 1471 | * Must be called with the server lock held. |
Willy Tarreau | 8eb7784 | 2014-05-21 13:54:57 +0200 | [diff] [blame] | 1472 | */ |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1473 | void srv_set_stopping(struct server *s, const char *reason, struct check *check) |
Willy Tarreau | 8eb7784 | 2014-05-21 13:54:57 +0200 | [diff] [blame] | 1474 | { |
| 1475 | struct server *srv; |
Willy Tarreau | 8eb7784 | 2014-05-21 13:54:57 +0200 | [diff] [blame] | 1476 | |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 1477 | if (s->cur_admin & SRV_ADMF_MAINT) |
Willy Tarreau | 8eb7784 | 2014-05-21 13:54:57 +0200 | [diff] [blame] | 1478 | return; |
| 1479 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1480 | if (s->next_state == SRV_ST_STOPPING) |
Willy Tarreau | 8eb7784 | 2014-05-21 13:54:57 +0200 | [diff] [blame] | 1481 | return; |
| 1482 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1483 | s->next_state = SRV_ST_STOPPING; |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1484 | *s->op_st_chg.reason = 0; |
| 1485 | s->op_st_chg.status = -1; |
| 1486 | if (reason) { |
| 1487 | strlcpy2(s->op_st_chg.reason, reason, sizeof(s->op_st_chg.reason)); |
| 1488 | } |
| 1489 | else if (check) { |
Willy Tarreau | 358847f | 2017-11-20 21:33:21 +0100 | [diff] [blame] | 1490 | strlcpy2(s->op_st_chg.reason, check->desc, sizeof(s->op_st_chg.reason)); |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1491 | s->op_st_chg.code = check->code; |
| 1492 | s->op_st_chg.status = check->status; |
| 1493 | s->op_st_chg.duration = check->duration; |
| 1494 | } |
Willy Tarreau | 8eb7784 | 2014-05-21 13:54:57 +0200 | [diff] [blame] | 1495 | |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1496 | /* propagate changes */ |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1497 | srv_update_status(s); |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1498 | |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1499 | for (srv = s->trackers; srv; srv = srv->tracknext) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1500 | HA_SPIN_LOCK(SERVER_LOCK, &srv->lock); |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 1501 | srv_set_stopping(srv, NULL, NULL); |
Christopher Faulet | 8d01fd6 | 2018-01-24 21:49:41 +0100 | [diff] [blame] | 1502 | HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock); |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1503 | } |
Willy Tarreau | 8eb7784 | 2014-05-21 13:54:57 +0200 | [diff] [blame] | 1504 | } |
Willy Tarreau | dbd5e78 | 2014-05-20 22:46:35 +0200 | [diff] [blame] | 1505 | |
Willy Tarreau | bfc7b7a | 2014-05-22 16:14:34 +0200 | [diff] [blame] | 1506 | /* Enables admin flag <mode> (among SRV_ADMF_*) on server <s>. This is used to |
| 1507 | * enforce either maint mode or drain mode. It is not allowed to set more than |
| 1508 | * one flag at once. The equivalent "inherited" flag is propagated to all |
| 1509 | * tracking servers. Maintenance mode disables health checks (but not agent |
| 1510 | * checks). When either the flag is already set or no flag is passed, nothing |
Willy Tarreau | 8b42848 | 2016-11-07 15:53:43 +0100 | [diff] [blame] | 1511 | * is done. If <cause> is non-null, it will be displayed at the end of the log |
| 1512 | * lines to justify the state change. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 1513 | * |
| 1514 | * Must be called with the server lock held. |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1515 | */ |
Willy Tarreau | 8b42848 | 2016-11-07 15:53:43 +0100 | [diff] [blame] | 1516 | void srv_set_admin_flag(struct server *s, enum srv_admin mode, const char *cause) |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1517 | { |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1518 | struct server *srv; |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1519 | |
| 1520 | if (!mode) |
| 1521 | return; |
| 1522 | |
| 1523 | /* stop going down as soon as we meet a server already in the same state */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1524 | if (s->next_admin & mode) |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1525 | return; |
| 1526 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1527 | s->next_admin |= mode; |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 1528 | if (cause) |
| 1529 | strlcpy2(s->adm_st_chg_cause, cause, sizeof(s->adm_st_chg_cause)); |
| 1530 | |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1531 | /* propagate changes */ |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1532 | srv_update_status(s); |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1533 | |
Willy Tarreau | bfc7b7a | 2014-05-22 16:14:34 +0200 | [diff] [blame] | 1534 | /* stop going down if the equivalent flag was already present (forced or inherited) */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1535 | if (((mode & SRV_ADMF_MAINT) && (s->next_admin & ~mode & SRV_ADMF_MAINT)) || |
| 1536 | ((mode & SRV_ADMF_DRAIN) && (s->next_admin & ~mode & SRV_ADMF_DRAIN))) |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1537 | return; |
Willy Tarreau | bfc7b7a | 2014-05-22 16:14:34 +0200 | [diff] [blame] | 1538 | |
Willy Tarreau | bfc7b7a | 2014-05-22 16:14:34 +0200 | [diff] [blame] | 1539 | /* compute the inherited flag to propagate */ |
| 1540 | if (mode & SRV_ADMF_MAINT) |
| 1541 | mode = SRV_ADMF_IMAINT; |
| 1542 | else if (mode & SRV_ADMF_DRAIN) |
| 1543 | mode = SRV_ADMF_IDRAIN; |
| 1544 | |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1545 | for (srv = s->trackers; srv; srv = srv->tracknext) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1546 | HA_SPIN_LOCK(SERVER_LOCK, &srv->lock); |
Willy Tarreau | 8b42848 | 2016-11-07 15:53:43 +0100 | [diff] [blame] | 1547 | srv_set_admin_flag(srv, mode, cause); |
Christopher Faulet | 8d01fd6 | 2018-01-24 21:49:41 +0100 | [diff] [blame] | 1548 | HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock); |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1549 | } |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1550 | } |
| 1551 | |
Willy Tarreau | bfc7b7a | 2014-05-22 16:14:34 +0200 | [diff] [blame] | 1552 | /* Disables admin flag <mode> (among SRV_ADMF_*) on server <s>. This is used to |
| 1553 | * stop enforcing either maint mode or drain mode. It is not allowed to set more |
| 1554 | * than one flag at once. The equivalent "inherited" flag is propagated to all |
| 1555 | * tracking servers. Leaving maintenance mode re-enables health checks. When |
| 1556 | * either the flag is already cleared or no flag is passed, nothing is done. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 1557 | * |
| 1558 | * Must be called with the server lock held. |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1559 | */ |
Willy Tarreau | bfc7b7a | 2014-05-22 16:14:34 +0200 | [diff] [blame] | 1560 | void srv_clr_admin_flag(struct server *s, enum srv_admin mode) |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1561 | { |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1562 | struct server *srv; |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1563 | |
| 1564 | if (!mode) |
| 1565 | return; |
| 1566 | |
| 1567 | /* stop going down as soon as we see the flag is not there anymore */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1568 | if (!(s->next_admin & mode)) |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1569 | return; |
| 1570 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1571 | s->next_admin &= ~mode; |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1572 | |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1573 | /* propagate changes */ |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1574 | srv_update_status(s); |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1575 | |
Willy Tarreau | bfc7b7a | 2014-05-22 16:14:34 +0200 | [diff] [blame] | 1576 | /* stop going down if the equivalent flag is still present (forced or inherited) */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1577 | if (((mode & SRV_ADMF_MAINT) && (s->next_admin & SRV_ADMF_MAINT)) || |
| 1578 | ((mode & SRV_ADMF_DRAIN) && (s->next_admin & SRV_ADMF_DRAIN))) |
Willy Tarreau | eeba36b | 2018-08-21 08:22:26 +0200 | [diff] [blame] | 1579 | return; |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1580 | |
Willy Tarreau | bfc7b7a | 2014-05-22 16:14:34 +0200 | [diff] [blame] | 1581 | if (mode & SRV_ADMF_MAINT) |
| 1582 | mode = SRV_ADMF_IMAINT; |
| 1583 | else if (mode & SRV_ADMF_DRAIN) |
| 1584 | mode = SRV_ADMF_IDRAIN; |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1585 | |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1586 | for (srv = s->trackers; srv; srv = srv->tracknext) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1587 | HA_SPIN_LOCK(SERVER_LOCK, &srv->lock); |
Willy Tarreau | bfc7b7a | 2014-05-22 16:14:34 +0200 | [diff] [blame] | 1588 | srv_clr_admin_flag(srv, mode); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1589 | HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock); |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1590 | } |
Willy Tarreau | a0066dd | 2014-05-16 11:25:16 +0200 | [diff] [blame] | 1591 | } |
| 1592 | |
Willy Tarreau | 757478e | 2016-11-03 19:22:19 +0100 | [diff] [blame] | 1593 | /* principle: propagate maint and drain to tracking servers. This is useful |
| 1594 | * upon startup so that inherited states are correct. |
| 1595 | */ |
| 1596 | static void srv_propagate_admin_state(struct server *srv) |
| 1597 | { |
| 1598 | struct server *srv2; |
| 1599 | |
| 1600 | if (!srv->trackers) |
| 1601 | return; |
| 1602 | |
| 1603 | for (srv2 = srv->trackers; srv2; srv2 = srv2->tracknext) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1604 | HA_SPIN_LOCK(SERVER_LOCK, &srv2->lock); |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1605 | if (srv->next_admin & (SRV_ADMF_MAINT | SRV_ADMF_CMAINT)) |
Willy Tarreau | 8b42848 | 2016-11-07 15:53:43 +0100 | [diff] [blame] | 1606 | srv_set_admin_flag(srv2, SRV_ADMF_IMAINT, NULL); |
Willy Tarreau | 757478e | 2016-11-03 19:22:19 +0100 | [diff] [blame] | 1607 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1608 | if (srv->next_admin & SRV_ADMF_DRAIN) |
Willy Tarreau | 8b42848 | 2016-11-07 15:53:43 +0100 | [diff] [blame] | 1609 | srv_set_admin_flag(srv2, SRV_ADMF_IDRAIN, NULL); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1610 | HA_SPIN_UNLOCK(SERVER_LOCK, &srv2->lock); |
Willy Tarreau | 757478e | 2016-11-03 19:22:19 +0100 | [diff] [blame] | 1611 | } |
| 1612 | } |
| 1613 | |
| 1614 | /* Compute and propagate the admin states for all servers in proxy <px>. |
| 1615 | * Only servers *not* tracking another one are considered, because other |
| 1616 | * ones will be handled when the server they track is visited. |
| 1617 | */ |
| 1618 | void srv_compute_all_admin_states(struct proxy *px) |
| 1619 | { |
| 1620 | struct server *srv; |
| 1621 | |
| 1622 | for (srv = px->srv; srv; srv = srv->next) { |
| 1623 | if (srv->track) |
| 1624 | continue; |
| 1625 | srv_propagate_admin_state(srv); |
| 1626 | } |
| 1627 | } |
| 1628 | |
Willy Tarreau | dff5543 | 2012-10-10 17:51:05 +0200 | [diff] [blame] | 1629 | /* Note: must not be declared <const> as its list will be overwritten. |
| 1630 | * Please take care of keeping this list alphabetically sorted, doing so helps |
| 1631 | * all code contributors. |
| 1632 | * Optional keywords are also declared with a NULL ->parse() function so that |
| 1633 | * the config parser can report an appropriate error when a known keyword was |
| 1634 | * not enabled. |
Frédéric Lécaille | dfacd69 | 2017-04-16 17:14:14 +0200 | [diff] [blame] | 1635 | * Note: -1 as ->skip value means that the number of arguments are variable. |
Willy Tarreau | dff5543 | 2012-10-10 17:51:05 +0200 | [diff] [blame] | 1636 | */ |
| 1637 | static struct srv_kw_list srv_kws = { "ALL", { }, { |
Amaury Denoyelle | fc465a5 | 2021-03-09 17:36:23 +0100 | [diff] [blame] | 1638 | { "backup", srv_parse_backup, 0, 1, 1 }, /* Flag as backup server */ |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 1639 | { "cookie", srv_parse_cookie, 1, 1, 0 }, /* Assign a cookie to the server */ |
Amaury Denoyelle | fc465a5 | 2021-03-09 17:36:23 +0100 | [diff] [blame] | 1640 | { "disabled", srv_parse_disabled, 0, 1, 1 }, /* Start the server in 'disabled' state */ |
| 1641 | { "enabled", srv_parse_enabled, 0, 1, 1 }, /* Start the server in 'enabled' state */ |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 1642 | { "error-limit", srv_parse_error_limit, 1, 1, 0 }, /* Configure the consecutive count of check failures to consider a server on error */ |
Amaury Denoyelle | fc465a5 | 2021-03-09 17:36:23 +0100 | [diff] [blame] | 1643 | { "id", srv_parse_id, 1, 0, 1 }, /* set id# of server */ |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 1644 | { "init-addr", srv_parse_init_addr, 1, 1, 0 }, /* */ |
| 1645 | { "log-proto", srv_parse_log_proto, 1, 1, 0 }, /* Set the protocol for event messages, only relevant in a ring section */ |
Amaury Denoyelle | fc465a5 | 2021-03-09 17:36:23 +0100 | [diff] [blame] | 1646 | { "maxconn", srv_parse_maxconn, 1, 1, 1 }, /* Set the max number of concurrent connection */ |
| 1647 | { "maxqueue", srv_parse_maxqueue, 1, 1, 1 }, /* Set the max number of connection to put in queue */ |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 1648 | { "max-reuse", srv_parse_max_reuse, 1, 1, 0 }, /* Set the max number of requests on a connection, -1 means unlimited */ |
Amaury Denoyelle | fc465a5 | 2021-03-09 17:36:23 +0100 | [diff] [blame] | 1649 | { "minconn", srv_parse_minconn, 1, 1, 1 }, /* Enable a dynamic maxconn limit */ |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 1650 | { "namespace", srv_parse_namespace, 1, 1, 0 }, /* Namespace the server socket belongs to (if supported) */ |
Amaury Denoyelle | fc465a5 | 2021-03-09 17:36:23 +0100 | [diff] [blame] | 1651 | { "no-backup", srv_parse_no_backup, 0, 1, 1 }, /* Flag as non-backup server */ |
| 1652 | { "no-send-proxy", srv_parse_no_send_proxy, 0, 1, 1 }, /* Disable use of PROXY V1 protocol */ |
| 1653 | { "no-send-proxy-v2", srv_parse_no_send_proxy_v2, 0, 1, 1 }, /* Disable use of PROXY V2 protocol */ |
| 1654 | { "no-tfo", srv_parse_no_tfo, 0, 1, 1 }, /* Disable use of TCP Fast Open */ |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 1655 | { "non-stick", srv_parse_non_stick, 0, 1, 0 }, /* Disable stick-table persistence */ |
| 1656 | { "observe", srv_parse_observe, 1, 1, 0 }, /* Enables health adjusting based on observing communication with the server */ |
| 1657 | { "on-error", srv_parse_on_error, 1, 1, 0 }, /* Configure the action on check failure */ |
| 1658 | { "on-marked-down", srv_parse_on_marked_down, 1, 1, 0 }, /* Configure the action when a server is marked down */ |
| 1659 | { "on-marked-up", srv_parse_on_marked_up, 1, 1, 0 }, /* Configure the action when a server is marked up */ |
Amaury Denoyelle | fc465a5 | 2021-03-09 17:36:23 +0100 | [diff] [blame] | 1660 | { "pool-low-conn", srv_parse_pool_low_conn, 1, 1, 1 }, /* Set the min number of orphan idle connecbefore being allowed to pick from other threads */ |
| 1661 | { "pool-max-conn", srv_parse_pool_max_conn, 1, 1, 1 }, /* Set the max number of orphan idle connections, -1 means unlimited */ |
| 1662 | { "pool-purge-delay", srv_parse_pool_purge_delay, 1, 1, 1 }, /* Set the time before we destroy orphan idle connections, defaults to 1s */ |
Amaury Denoyelle | 3046723 | 2021-03-12 18:03:27 +0100 | [diff] [blame] | 1663 | { "proto", srv_parse_proto, 1, 1, 1 }, /* Set the proto to use for all outgoing connections */ |
Amaury Denoyelle | fc465a5 | 2021-03-09 17:36:23 +0100 | [diff] [blame] | 1664 | { "proxy-v2-options", srv_parse_proxy_v2_options, 1, 1, 1 }, /* options for send-proxy-v2 */ |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 1665 | { "redir", srv_parse_redir, 1, 1, 0 }, /* Enable redirection mode */ |
Ilya Shipitsin | ba13f16 | 2021-03-19 22:21:44 +0500 | [diff] [blame] | 1666 | { "resolve-net", srv_parse_resolve_net, 1, 1, 0 }, /* Set the preferred network range for name resolution */ |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 1667 | { "resolve-opts", srv_parse_resolve_opts, 1, 1, 0 }, /* Set options for name resolution */ |
Ilya Shipitsin | ba13f16 | 2021-03-19 22:21:44 +0500 | [diff] [blame] | 1668 | { "resolve-prefer", srv_parse_resolve_prefer, 1, 1, 0 }, /* Set the preferred family for name resolution */ |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 1669 | { "resolvers", srv_parse_resolvers, 1, 1, 0 }, /* Configure the resolver to use for name resolution */ |
Amaury Denoyelle | fc465a5 | 2021-03-09 17:36:23 +0100 | [diff] [blame] | 1670 | { "send-proxy", srv_parse_send_proxy, 0, 1, 1 }, /* Enforce use of PROXY V1 protocol */ |
| 1671 | { "send-proxy-v2", srv_parse_send_proxy_v2, 0, 1, 1 }, /* Enforce use of PROXY V2 protocol */ |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 1672 | { "slowstart", srv_parse_slowstart, 1, 1, 0 }, /* Set the warm-up timer for a previously failed server */ |
Amaury Denoyelle | fc465a5 | 2021-03-09 17:36:23 +0100 | [diff] [blame] | 1673 | { "source", srv_parse_source, -1, 1, 1 }, /* Set the source address to be used to connect to the server */ |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 1674 | { "stick", srv_parse_stick, 0, 1, 0 }, /* Enable stick-table persistence */ |
Amaury Denoyelle | fc465a5 | 2021-03-09 17:36:23 +0100 | [diff] [blame] | 1675 | { "tfo", srv_parse_tfo, 0, 1, 1 }, /* enable TCP Fast Open of server */ |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 1676 | { "track", srv_parse_track, 1, 1, 0 }, /* Set the current state of the server, tracking another one */ |
| 1677 | { "socks4", srv_parse_socks4, 1, 1, 0 }, /* Set the socks4 proxy of the server*/ |
Amaury Denoyelle | fc465a5 | 2021-03-09 17:36:23 +0100 | [diff] [blame] | 1678 | { "usesrc", srv_parse_usesrc, 0, 1, 1 }, /* safe-guard against usesrc without preceding <source> keyword */ |
| 1679 | { "weight", srv_parse_weight, 1, 1, 1 }, /* Set the load-balancing weight */ |
Willy Tarreau | dff5543 | 2012-10-10 17:51:05 +0200 | [diff] [blame] | 1680 | { NULL, NULL, 0 }, |
| 1681 | }}; |
| 1682 | |
Willy Tarreau | 0108d90 | 2018-11-25 19:14:37 +0100 | [diff] [blame] | 1683 | INITCALL1(STG_REGISTER, srv_register_keywords, &srv_kws); |
Willy Tarreau | dff5543 | 2012-10-10 17:51:05 +0200 | [diff] [blame] | 1684 | |
Willy Tarreau | 004e045 | 2013-11-21 11:22:01 +0100 | [diff] [blame] | 1685 | /* Recomputes the server's eweight based on its state, uweight, the current time, |
Ilya Shipitsin | c02a23f | 2020-05-06 00:53:22 +0500 | [diff] [blame] | 1686 | * and the proxy's algorithm. To be used after updating sv->uweight. The warmup |
Willy Tarreau | 3ff577e | 2018-08-02 11:48:52 +0200 | [diff] [blame] | 1687 | * state is automatically disabled if the time is elapsed. If <must_update> is |
| 1688 | * not zero, the update will be propagated immediately. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 1689 | * |
| 1690 | * Must be called with the server lock held. |
Willy Tarreau | 004e045 | 2013-11-21 11:22:01 +0100 | [diff] [blame] | 1691 | */ |
Willy Tarreau | 3ff577e | 2018-08-02 11:48:52 +0200 | [diff] [blame] | 1692 | void server_recalc_eweight(struct server *sv, int must_update) |
Willy Tarreau | 004e045 | 2013-11-21 11:22:01 +0100 | [diff] [blame] | 1693 | { |
| 1694 | struct proxy *px = sv->proxy; |
| 1695 | unsigned w; |
| 1696 | |
| 1697 | if (now.tv_sec < sv->last_change || now.tv_sec >= sv->last_change + sv->slowstart) { |
| 1698 | /* go to full throttle if the slowstart interval is reached */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1699 | if (sv->next_state == SRV_ST_STARTING) |
| 1700 | sv->next_state = SRV_ST_RUNNING; |
Willy Tarreau | 004e045 | 2013-11-21 11:22:01 +0100 | [diff] [blame] | 1701 | } |
| 1702 | |
| 1703 | /* We must take care of not pushing the server to full throttle during slow starts. |
| 1704 | * It must also start immediately, at least at the minimal step when leaving maintenance. |
| 1705 | */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1706 | if ((sv->next_state == SRV_ST_STARTING) && (px->lbprm.algo & BE_LB_PROP_DYN)) |
Willy Tarreau | 004e045 | 2013-11-21 11:22:01 +0100 | [diff] [blame] | 1707 | w = (px->lbprm.wdiv * (now.tv_sec - sv->last_change) + sv->slowstart) / sv->slowstart; |
| 1708 | else |
| 1709 | w = px->lbprm.wdiv; |
| 1710 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1711 | sv->next_eweight = (sv->uweight * w + px->lbprm.wmult - 1) / px->lbprm.wmult; |
Willy Tarreau | 004e045 | 2013-11-21 11:22:01 +0100 | [diff] [blame] | 1712 | |
Willy Tarreau | 3ff577e | 2018-08-02 11:48:52 +0200 | [diff] [blame] | 1713 | /* propagate changes only if needed (i.e. not recursively) */ |
Willy Tarreau | 49725a0 | 2018-08-21 19:54:09 +0200 | [diff] [blame] | 1714 | if (must_update) |
Willy Tarreau | 3ff577e | 2018-08-02 11:48:52 +0200 | [diff] [blame] | 1715 | srv_update_status(sv); |
Willy Tarreau | 004e045 | 2013-11-21 11:22:01 +0100 | [diff] [blame] | 1716 | } |
| 1717 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1718 | /* |
Simon Horman | 7d09b9a | 2013-02-12 10:45:51 +0900 | [diff] [blame] | 1719 | * Parses weight_str and configures sv accordingly. |
| 1720 | * Returns NULL on success, error message string otherwise. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 1721 | * |
| 1722 | * Must be called with the server lock held. |
Simon Horman | 7d09b9a | 2013-02-12 10:45:51 +0900 | [diff] [blame] | 1723 | */ |
| 1724 | const char *server_parse_weight_change_request(struct server *sv, |
| 1725 | const char *weight_str) |
| 1726 | { |
| 1727 | struct proxy *px; |
Simon Horman | b796afa | 2013-02-12 10:45:53 +0900 | [diff] [blame] | 1728 | long int w; |
| 1729 | char *end; |
Simon Horman | 7d09b9a | 2013-02-12 10:45:51 +0900 | [diff] [blame] | 1730 | |
| 1731 | px = sv->proxy; |
| 1732 | |
| 1733 | /* if the weight is terminated with '%', it is set relative to |
| 1734 | * the initial weight, otherwise it is absolute. |
| 1735 | */ |
| 1736 | if (!*weight_str) |
| 1737 | return "Require <weight> or <weight%>.\n"; |
| 1738 | |
Simon Horman | b796afa | 2013-02-12 10:45:53 +0900 | [diff] [blame] | 1739 | w = strtol(weight_str, &end, 10); |
| 1740 | if (end == weight_str) |
| 1741 | return "Empty weight string empty or preceded by garbage"; |
| 1742 | else if (end[0] == '%' && end[1] == '\0') { |
Simon Horman | 58b5d29 | 2013-02-12 10:45:52 +0900 | [diff] [blame] | 1743 | if (w < 0) |
Simon Horman | 7d09b9a | 2013-02-12 10:45:51 +0900 | [diff] [blame] | 1744 | return "Relative weight must be positive.\n"; |
Simon Horman | 58b5d29 | 2013-02-12 10:45:52 +0900 | [diff] [blame] | 1745 | /* Avoid integer overflow */ |
| 1746 | if (w > 25600) |
| 1747 | w = 25600; |
Simon Horman | 7d09b9a | 2013-02-12 10:45:51 +0900 | [diff] [blame] | 1748 | w = sv->iweight * w / 100; |
Simon Horman | 58b5d29 | 2013-02-12 10:45:52 +0900 | [diff] [blame] | 1749 | if (w > 256) |
| 1750 | w = 256; |
Simon Horman | 7d09b9a | 2013-02-12 10:45:51 +0900 | [diff] [blame] | 1751 | } |
| 1752 | else if (w < 0 || w > 256) |
| 1753 | return "Absolute weight can only be between 0 and 256 inclusive.\n"; |
Simon Horman | b796afa | 2013-02-12 10:45:53 +0900 | [diff] [blame] | 1754 | else if (end[0] != '\0') |
| 1755 | return "Trailing garbage in weight string"; |
Simon Horman | 7d09b9a | 2013-02-12 10:45:51 +0900 | [diff] [blame] | 1756 | |
| 1757 | if (w && w != sv->iweight && !(px->lbprm.algo & BE_LB_PROP_DYN)) |
| 1758 | return "Backend is using a static LB algorithm and only accepts weights '0%' and '100%'.\n"; |
| 1759 | |
| 1760 | sv->uweight = w; |
Willy Tarreau | 3ff577e | 2018-08-02 11:48:52 +0200 | [diff] [blame] | 1761 | server_recalc_eweight(sv, 1); |
Simon Horman | 7d09b9a | 2013-02-12 10:45:51 +0900 | [diff] [blame] | 1762 | |
| 1763 | return NULL; |
| 1764 | } |
| 1765 | |
Baptiste Assmann | 3d8f831 | 2015-04-13 22:54:33 +0200 | [diff] [blame] | 1766 | /* |
Thierry Fournier | 09a9178 | 2016-02-24 08:25:39 +0100 | [diff] [blame] | 1767 | * Parses <addr_str> and configures <sv> accordingly. <from> precise |
| 1768 | * the source of the change in the associated message log. |
Baptiste Assmann | 3d8f831 | 2015-04-13 22:54:33 +0200 | [diff] [blame] | 1769 | * Returns: |
| 1770 | * - error string on error |
| 1771 | * - NULL on success |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 1772 | * |
| 1773 | * Must be called with the server lock held. |
Baptiste Assmann | 3d8f831 | 2015-04-13 22:54:33 +0200 | [diff] [blame] | 1774 | */ |
| 1775 | const char *server_parse_addr_change_request(struct server *sv, |
Thierry Fournier | 09a9178 | 2016-02-24 08:25:39 +0100 | [diff] [blame] | 1776 | const char *addr_str, const char *updater) |
Baptiste Assmann | 3d8f831 | 2015-04-13 22:54:33 +0200 | [diff] [blame] | 1777 | { |
| 1778 | unsigned char ip[INET6_ADDRSTRLEN]; |
| 1779 | |
| 1780 | if (inet_pton(AF_INET6, addr_str, ip)) { |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 1781 | srv_update_addr(sv, ip, AF_INET6, updater); |
Baptiste Assmann | 3d8f831 | 2015-04-13 22:54:33 +0200 | [diff] [blame] | 1782 | return NULL; |
| 1783 | } |
| 1784 | if (inet_pton(AF_INET, addr_str, ip)) { |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 1785 | srv_update_addr(sv, ip, AF_INET, updater); |
Baptiste Assmann | 3d8f831 | 2015-04-13 22:54:33 +0200 | [diff] [blame] | 1786 | return NULL; |
| 1787 | } |
| 1788 | |
| 1789 | return "Could not understand IP address format.\n"; |
| 1790 | } |
| 1791 | |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 1792 | /* |
| 1793 | * Must be called with the server lock held. |
| 1794 | */ |
Nenad Merdanovic | 174dd37 | 2016-04-24 23:10:06 +0200 | [diff] [blame] | 1795 | const char *server_parse_maxconn_change_request(struct server *sv, |
| 1796 | const char *maxconn_str) |
| 1797 | { |
| 1798 | long int v; |
| 1799 | char *end; |
| 1800 | |
| 1801 | if (!*maxconn_str) |
| 1802 | return "Require <maxconn>.\n"; |
| 1803 | |
| 1804 | v = strtol(maxconn_str, &end, 10); |
| 1805 | if (end == maxconn_str) |
| 1806 | return "maxconn string empty or preceded by garbage"; |
| 1807 | else if (end[0] != '\0') |
| 1808 | return "Trailing garbage in maxconn string"; |
| 1809 | |
Amaury Denoyelle | 3cf8144 | 2021-05-17 10:47:18 +0200 | [diff] [blame] | 1810 | HA_SPIN_LOCK(SERVER_LOCK, &sv->lock); |
Nenad Merdanovic | 174dd37 | 2016-04-24 23:10:06 +0200 | [diff] [blame] | 1811 | if (sv->maxconn == sv->minconn) { // static maxconn |
| 1812 | sv->maxconn = sv->minconn = v; |
| 1813 | } else { // dynamic maxconn |
| 1814 | sv->maxconn = v; |
| 1815 | } |
Amaury Denoyelle | 3cf8144 | 2021-05-17 10:47:18 +0200 | [diff] [blame] | 1816 | HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock); |
Nenad Merdanovic | 174dd37 | 2016-04-24 23:10:06 +0200 | [diff] [blame] | 1817 | |
| 1818 | if (may_dequeue_tasks(sv, sv->proxy)) |
| 1819 | process_srv_queue(sv); |
| 1820 | |
| 1821 | return NULL; |
| 1822 | } |
| 1823 | |
Frédéric Lécaille | 9a146de | 2017-03-20 14:54:41 +0100 | [diff] [blame] | 1824 | #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
Frédéric Lécaille | 759ea98 | 2017-03-30 17:32:36 +0200 | [diff] [blame] | 1825 | static struct sample_expr *srv_sni_sample_parse_expr(struct server *srv, struct proxy *px, |
| 1826 | const char *file, int linenum, char **err) |
Frédéric Lécaille | 9a146de | 2017-03-20 14:54:41 +0100 | [diff] [blame] | 1827 | { |
| 1828 | int idx; |
Frédéric Lécaille | 9a146de | 2017-03-20 14:54:41 +0100 | [diff] [blame] | 1829 | const char *args[] = { |
Frédéric Lécaille | 759ea98 | 2017-03-30 17:32:36 +0200 | [diff] [blame] | 1830 | srv->sni_expr, |
Frédéric Lécaille | 9a146de | 2017-03-20 14:54:41 +0100 | [diff] [blame] | 1831 | NULL, |
| 1832 | }; |
| 1833 | |
| 1834 | idx = 0; |
Olivier Houchard | 7d8e688 | 2017-04-20 18:21:17 +0200 | [diff] [blame] | 1835 | px->conf.args.ctx = ARGC_SRV; |
Frédéric Lécaille | 9a146de | 2017-03-20 14:54:41 +0100 | [diff] [blame] | 1836 | |
Willy Tarreau | e3b57bf | 2020-02-14 16:50:14 +0100 | [diff] [blame] | 1837 | return sample_parse_expr((char **)args, &idx, file, linenum, err, &px->conf.args, NULL); |
Frédéric Lécaille | 759ea98 | 2017-03-30 17:32:36 +0200 | [diff] [blame] | 1838 | } |
| 1839 | |
| 1840 | static int server_parse_sni_expr(struct server *newsrv, struct proxy *px, char **err) |
| 1841 | { |
| 1842 | struct sample_expr *expr; |
| 1843 | |
| 1844 | expr = srv_sni_sample_parse_expr(newsrv, px, px->conf.file, px->conf.line, err); |
Frédéric Lécaille | 9a146de | 2017-03-20 14:54:41 +0100 | [diff] [blame] | 1845 | if (!expr) { |
| 1846 | memprintf(err, "error detected while parsing sni expression : %s", *err); |
| 1847 | return ERR_ALERT | ERR_FATAL; |
| 1848 | } |
| 1849 | |
| 1850 | if (!(expr->fetch->val & SMP_VAL_BE_SRV_CON)) { |
| 1851 | memprintf(err, "error detected while parsing sni expression : " |
| 1852 | " fetch method '%s' extracts information from '%s', " |
| 1853 | "none of which is available here.\n", |
Frédéric Lécaille | 759ea98 | 2017-03-30 17:32:36 +0200 | [diff] [blame] | 1854 | newsrv->sni_expr, sample_src_names(expr->fetch->use)); |
Frédéric Lécaille | 9a146de | 2017-03-20 14:54:41 +0100 | [diff] [blame] | 1855 | return ERR_ALERT | ERR_FATAL; |
| 1856 | } |
| 1857 | |
| 1858 | px->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY); |
| 1859 | release_sample_expr(newsrv->ssl_ctx.sni); |
| 1860 | newsrv->ssl_ctx.sni = expr; |
| 1861 | |
| 1862 | return 0; |
| 1863 | } |
| 1864 | #endif |
| 1865 | |
Gaetan Rivet | 10c4b4a | 2020-02-11 11:42:38 +0100 | [diff] [blame] | 1866 | static void display_parser_err(const char *file, int linenum, char **args, int cur_arg, int err_code, char **err) |
Frédéric Lécaille | 9a146de | 2017-03-20 14:54:41 +0100 | [diff] [blame] | 1867 | { |
Gaetan Rivet | 10c4b4a | 2020-02-11 11:42:38 +0100 | [diff] [blame] | 1868 | char *msg = "error encountered while processing "; |
| 1869 | char *quote = "'"; |
| 1870 | char *token = args[cur_arg]; |
| 1871 | |
Frédéric Lécaille | 9a146de | 2017-03-20 14:54:41 +0100 | [diff] [blame] | 1872 | if (err && *err) { |
| 1873 | indent_msg(err, 2); |
Gaetan Rivet | 10c4b4a | 2020-02-11 11:42:38 +0100 | [diff] [blame] | 1874 | msg = *err; |
| 1875 | quote = ""; |
| 1876 | token = ""; |
Frédéric Lécaille | 9a146de | 2017-03-20 14:54:41 +0100 | [diff] [blame] | 1877 | } |
Gaetan Rivet | 10c4b4a | 2020-02-11 11:42:38 +0100 | [diff] [blame] | 1878 | |
| 1879 | if (err_code & ERR_WARN && !(err_code & ERR_ALERT)) |
| 1880 | ha_warning("parsing [%s:%d] : '%s %s' : %s%s%s%s.\n", |
| 1881 | file, linenum, args[0], args[1], |
| 1882 | msg, quote, token, quote); |
Frédéric Lécaille | 9a146de | 2017-03-20 14:54:41 +0100 | [diff] [blame] | 1883 | else |
Gaetan Rivet | 10c4b4a | 2020-02-11 11:42:38 +0100 | [diff] [blame] | 1884 | ha_alert("parsing [%s:%d] : '%s %s' : %s%s%s%s.\n", |
| 1885 | file, linenum, args[0], args[1], |
| 1886 | msg, quote, token, quote); |
Frédéric Lécaille | 9a146de | 2017-03-20 14:54:41 +0100 | [diff] [blame] | 1887 | } |
| 1888 | |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 1889 | static void srv_conn_src_sport_range_cpy(struct server *srv, |
| 1890 | struct server *src) |
| 1891 | { |
| 1892 | int range_sz; |
| 1893 | |
| 1894 | range_sz = src->conn_src.sport_range->size; |
| 1895 | if (range_sz > 0) { |
| 1896 | srv->conn_src.sport_range = port_range_alloc_range(range_sz); |
| 1897 | if (srv->conn_src.sport_range != NULL) { |
| 1898 | int i; |
| 1899 | |
| 1900 | for (i = 0; i < range_sz; i++) { |
| 1901 | srv->conn_src.sport_range->ports[i] = |
| 1902 | src->conn_src.sport_range->ports[i]; |
| 1903 | } |
| 1904 | } |
| 1905 | } |
| 1906 | } |
| 1907 | |
| 1908 | /* |
| 1909 | * Copy <src> server connection source settings to <srv> server everything needed. |
| 1910 | */ |
| 1911 | static void srv_conn_src_cpy(struct server *srv, struct server *src) |
| 1912 | { |
| 1913 | srv->conn_src.opts = src->conn_src.opts; |
| 1914 | srv->conn_src.source_addr = src->conn_src.source_addr; |
| 1915 | |
| 1916 | /* Source port range copy. */ |
| 1917 | if (src->conn_src.sport_range != NULL) |
| 1918 | srv_conn_src_sport_range_cpy(srv, src); |
| 1919 | |
| 1920 | #ifdef CONFIG_HAP_TRANSPARENT |
| 1921 | if (src->conn_src.bind_hdr_name != NULL) { |
| 1922 | srv->conn_src.bind_hdr_name = strdup(src->conn_src.bind_hdr_name); |
| 1923 | srv->conn_src.bind_hdr_len = strlen(src->conn_src.bind_hdr_name); |
| 1924 | } |
| 1925 | srv->conn_src.bind_hdr_occ = src->conn_src.bind_hdr_occ; |
| 1926 | srv->conn_src.tproxy_addr = src->conn_src.tproxy_addr; |
| 1927 | #endif |
| 1928 | if (src->conn_src.iface_name != NULL) |
| 1929 | srv->conn_src.iface_name = strdup(src->conn_src.iface_name); |
| 1930 | } |
| 1931 | |
| 1932 | /* |
| 1933 | * Copy <src> server SSL settings to <srv> server allocating |
| 1934 | * everything needed. |
| 1935 | */ |
| 1936 | #if defined(USE_OPENSSL) |
| 1937 | static void srv_ssl_settings_cpy(struct server *srv, struct server *src) |
| 1938 | { |
| 1939 | if (src->ssl_ctx.ca_file != NULL) |
| 1940 | srv->ssl_ctx.ca_file = strdup(src->ssl_ctx.ca_file); |
| 1941 | if (src->ssl_ctx.crl_file != NULL) |
| 1942 | srv->ssl_ctx.crl_file = strdup(src->ssl_ctx.crl_file); |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 1943 | |
| 1944 | srv->ssl_ctx.verify = src->ssl_ctx.verify; |
| 1945 | |
| 1946 | if (src->ssl_ctx.verify_host != NULL) |
| 1947 | srv->ssl_ctx.verify_host = strdup(src->ssl_ctx.verify_host); |
| 1948 | if (src->ssl_ctx.ciphers != NULL) |
| 1949 | srv->ssl_ctx.ciphers = strdup(src->ssl_ctx.ciphers); |
Jerome Magnin | 2e8d52f | 2020-04-22 11:40:18 +0200 | [diff] [blame] | 1950 | if (src->ssl_ctx.options) |
| 1951 | srv->ssl_ctx.options = src->ssl_ctx.options; |
| 1952 | if (src->ssl_ctx.methods.flags) |
| 1953 | srv->ssl_ctx.methods.flags = src->ssl_ctx.methods.flags; |
| 1954 | if (src->ssl_ctx.methods.min) |
| 1955 | srv->ssl_ctx.methods.min = src->ssl_ctx.methods.min; |
| 1956 | if (src->ssl_ctx.methods.max) |
| 1957 | srv->ssl_ctx.methods.max = src->ssl_ctx.methods.max; |
| 1958 | |
Ilya Shipitsin | 2aa4b3a | 2021-01-07 11:55:45 +0500 | [diff] [blame] | 1959 | #ifdef HAVE_SSL_CTX_SET_CIPHERSUITES |
Dirkjan Bussink | 415150f | 2018-09-14 11:14:21 +0200 | [diff] [blame] | 1960 | if (src->ssl_ctx.ciphersuites != NULL) |
| 1961 | srv->ssl_ctx.ciphersuites = strdup(src->ssl_ctx.ciphersuites); |
| 1962 | #endif |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 1963 | if (src->sni_expr != NULL) |
| 1964 | srv->sni_expr = strdup(src->sni_expr); |
Olivier Houchard | c756600 | 2018-11-20 23:33:50 +0100 | [diff] [blame] | 1965 | |
| 1966 | #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation |
| 1967 | if (src->ssl_ctx.alpn_str) { |
| 1968 | srv->ssl_ctx.alpn_str = malloc(src->ssl_ctx.alpn_len); |
| 1969 | if (srv->ssl_ctx.alpn_str) { |
| 1970 | memcpy(srv->ssl_ctx.alpn_str, src->ssl_ctx.alpn_str, |
| 1971 | src->ssl_ctx.alpn_len); |
| 1972 | srv->ssl_ctx.alpn_len = src->ssl_ctx.alpn_len; |
| 1973 | } |
| 1974 | } |
| 1975 | #endif |
| 1976 | #ifdef OPENSSL_NPN_NEGOTIATED |
| 1977 | if (src->ssl_ctx.npn_str) { |
| 1978 | srv->ssl_ctx.npn_str = malloc(src->ssl_ctx.npn_len); |
| 1979 | if (srv->ssl_ctx.npn_str) { |
| 1980 | memcpy(srv->ssl_ctx.npn_str, src->ssl_ctx.npn_str, |
| 1981 | src->ssl_ctx.npn_len); |
| 1982 | srv->ssl_ctx.npn_len = src->ssl_ctx.npn_len; |
| 1983 | } |
| 1984 | } |
| 1985 | #endif |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 1986 | } |
| 1987 | #endif |
| 1988 | |
| 1989 | /* |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 1990 | * Prepare <srv> for hostname resolution. |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 1991 | * May be safely called with a default server as <src> argument (without hostname). |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 1992 | * Returns -1 in case of any allocation failure, 0 if not. |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 1993 | */ |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 1994 | int srv_prepare_for_resolution(struct server *srv, const char *hostname) |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 1995 | { |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 1996 | char *hostname_dn; |
| 1997 | int hostname_len, hostname_dn_len; |
| 1998 | |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 1999 | if (!hostname) |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 2000 | return 0; |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2001 | |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 2002 | hostname_len = strlen(hostname); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2003 | hostname_dn = trash.area; |
Emeric Brun | d30e9a1 | 2020-12-23 18:49:16 +0100 | [diff] [blame] | 2004 | hostname_dn_len = resolv_str_to_dn_label(hostname, hostname_len + 1, |
| 2005 | hostname_dn, trash.size); |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 2006 | if (hostname_dn_len == -1) |
| 2007 | goto err; |
Baptiste Assmann | 81ed1a0 | 2017-05-03 10:11:44 +0200 | [diff] [blame] | 2008 | |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2009 | |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 2010 | free(srv->hostname); |
| 2011 | free(srv->hostname_dn); |
| 2012 | srv->hostname = strdup(hostname); |
| 2013 | srv->hostname_dn = strdup(hostname_dn); |
| 2014 | srv->hostname_dn_len = hostname_dn_len; |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 2015 | if (!srv->hostname || !srv->hostname_dn) |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2016 | goto err; |
| 2017 | |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 2018 | return 0; |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2019 | |
| 2020 | err: |
Willy Tarreau | 61cfdf4 | 2021-02-20 10:46:51 +0100 | [diff] [blame] | 2021 | ha_free(&srv->hostname); |
| 2022 | ha_free(&srv->hostname_dn); |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 2023 | return -1; |
| 2024 | } |
| 2025 | |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 2026 | /* |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2027 | * Copy <src> server settings to <srv> server allocating |
| 2028 | * everything needed. |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2029 | * This function is not supposed to be called at any time, but only |
| 2030 | * during server settings parsing or during server allocations from |
| 2031 | * a server template, and just after having calloc()'ed a new server. |
| 2032 | * So, <src> may only be a default server (when parsing server settings) |
| 2033 | * or a server template (during server allocations from a server template). |
| 2034 | * <srv_tmpl> distinguishes these two cases (must be 1 if <srv> is a template, |
| 2035 | * 0 if not). |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2036 | */ |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2037 | static void srv_settings_cpy(struct server *srv, struct server *src, int srv_tmpl) |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2038 | { |
| 2039 | /* Connection source settings copy */ |
| 2040 | srv_conn_src_cpy(srv, src); |
| 2041 | |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2042 | if (srv_tmpl) { |
| 2043 | srv->addr = src->addr; |
| 2044 | srv->svc_port = src->svc_port; |
| 2045 | } |
| 2046 | |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2047 | srv->pp_opts = src->pp_opts; |
| 2048 | if (src->rdr_pfx != NULL) { |
| 2049 | srv->rdr_pfx = strdup(src->rdr_pfx); |
| 2050 | srv->rdr_len = src->rdr_len; |
| 2051 | } |
| 2052 | if (src->cookie != NULL) { |
| 2053 | srv->cookie = strdup(src->cookie); |
| 2054 | srv->cklen = src->cklen; |
| 2055 | } |
| 2056 | srv->use_ssl = src->use_ssl; |
Willy Tarreau | 2444108 | 2019-12-11 15:43:45 +0100 | [diff] [blame] | 2057 | srv->check.addr = src->check.addr; |
| 2058 | srv->agent.addr = src->agent.addr; |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2059 | srv->check.use_ssl = src->check.use_ssl; |
| 2060 | srv->check.port = src->check.port; |
Olivier Houchard | 2194401 | 2018-12-21 19:42:01 +0100 | [diff] [blame] | 2061 | srv->check.sni = src->check.sni; |
Olivier Houchard | 9215014 | 2018-12-21 19:47:01 +0100 | [diff] [blame] | 2062 | srv->check.alpn_str = src->check.alpn_str; |
Ilya Shipitsin | 0c50b1e | 2019-04-30 21:21:28 +0500 | [diff] [blame] | 2063 | srv->check.alpn_len = src->check.alpn_len; |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2064 | /* Note: 'flags' field has potentially been already initialized. */ |
| 2065 | srv->flags |= src->flags; |
| 2066 | srv->do_check = src->do_check; |
| 2067 | srv->do_agent = src->do_agent; |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2068 | srv->check.inter = src->check.inter; |
| 2069 | srv->check.fastinter = src->check.fastinter; |
| 2070 | srv->check.downinter = src->check.downinter; |
| 2071 | srv->agent.use_ssl = src->agent.use_ssl; |
| 2072 | srv->agent.port = src->agent.port; |
Christopher Faulet | 0ae3d1d | 2020-04-06 17:54:24 +0200 | [diff] [blame] | 2073 | |
| 2074 | if (src->agent.tcpcheck_rules) { |
| 2075 | srv->agent.tcpcheck_rules = calloc(1, sizeof(*srv->agent.tcpcheck_rules)); |
| 2076 | if (srv->agent.tcpcheck_rules) { |
| 2077 | srv->agent.tcpcheck_rules->flags = src->agent.tcpcheck_rules->flags; |
| 2078 | srv->agent.tcpcheck_rules->list = src->agent.tcpcheck_rules->list; |
| 2079 | LIST_INIT(&srv->agent.tcpcheck_rules->preset_vars); |
| 2080 | dup_tcpcheck_vars(&srv->agent.tcpcheck_rules->preset_vars, |
| 2081 | &src->agent.tcpcheck_rules->preset_vars); |
| 2082 | } |
| 2083 | } |
| 2084 | |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2085 | srv->agent.inter = src->agent.inter; |
| 2086 | srv->agent.fastinter = src->agent.fastinter; |
| 2087 | srv->agent.downinter = src->agent.downinter; |
| 2088 | srv->maxqueue = src->maxqueue; |
| 2089 | srv->minconn = src->minconn; |
| 2090 | srv->maxconn = src->maxconn; |
| 2091 | srv->slowstart = src->slowstart; |
| 2092 | srv->observe = src->observe; |
| 2093 | srv->onerror = src->onerror; |
| 2094 | srv->onmarkeddown = src->onmarkeddown; |
| 2095 | srv->onmarkedup = src->onmarkedup; |
| 2096 | if (src->trackit != NULL) |
| 2097 | srv->trackit = strdup(src->trackit); |
| 2098 | srv->consecutive_errors_limit = src->consecutive_errors_limit; |
| 2099 | srv->uweight = srv->iweight = src->iweight; |
| 2100 | |
| 2101 | srv->check.send_proxy = src->check.send_proxy; |
| 2102 | /* health: up, but will fall down at first failure */ |
| 2103 | srv->check.rise = srv->check.health = src->check.rise; |
| 2104 | srv->check.fall = src->check.fall; |
| 2105 | |
| 2106 | /* Here we check if 'disabled' is the default server state */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 2107 | if (src->next_admin & (SRV_ADMF_CMAINT | SRV_ADMF_FMAINT)) { |
| 2108 | srv->next_admin |= SRV_ADMF_CMAINT | SRV_ADMF_FMAINT; |
| 2109 | srv->next_state = SRV_ST_STOPPED; |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2110 | srv->check.state |= CHK_ST_PAUSED; |
| 2111 | srv->check.health = 0; |
| 2112 | } |
| 2113 | |
| 2114 | /* health: up but will fall down at first failure */ |
| 2115 | srv->agent.rise = srv->agent.health = src->agent.rise; |
| 2116 | srv->agent.fall = src->agent.fall; |
| 2117 | |
| 2118 | if (src->resolvers_id != NULL) |
| 2119 | srv->resolvers_id = strdup(src->resolvers_id); |
Emeric Brun | 21fbeed | 2020-12-23 18:01:04 +0100 | [diff] [blame] | 2120 | srv->resolv_opts.family_prio = src->resolv_opts.family_prio; |
| 2121 | srv->resolv_opts.accept_duplicate_ip = src->resolv_opts.accept_duplicate_ip; |
| 2122 | srv->resolv_opts.ignore_weight = src->resolv_opts.ignore_weight; |
| 2123 | if (srv->resolv_opts.family_prio == AF_UNSPEC) |
| 2124 | srv->resolv_opts.family_prio = AF_INET6; |
| 2125 | memcpy(srv->resolv_opts.pref_net, |
| 2126 | src->resolv_opts.pref_net, |
| 2127 | sizeof srv->resolv_opts.pref_net); |
| 2128 | srv->resolv_opts.pref_net_nb = src->resolv_opts.pref_net_nb; |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2129 | |
| 2130 | srv->init_addr_methods = src->init_addr_methods; |
| 2131 | srv->init_addr = src->init_addr; |
| 2132 | #if defined(USE_OPENSSL) |
| 2133 | srv_ssl_settings_cpy(srv, src); |
| 2134 | #endif |
| 2135 | #ifdef TCP_USER_TIMEOUT |
| 2136 | srv->tcp_ut = src->tcp_ut; |
| 2137 | #endif |
Christopher Faulet | 8ed0a3e | 2018-04-10 14:45:45 +0200 | [diff] [blame] | 2138 | srv->mux_proto = src->mux_proto; |
Olivier Houchard | b7b3faa | 2018-12-14 18:15:36 +0100 | [diff] [blame] | 2139 | srv->pool_purge_delay = src->pool_purge_delay; |
Willy Tarreau | 2f3f4d3 | 2020-07-01 07:43:51 +0200 | [diff] [blame] | 2140 | srv->low_idle_conns = src->low_idle_conns; |
Olivier Houchard | 006e310 | 2018-12-10 18:30:32 +0100 | [diff] [blame] | 2141 | srv->max_idle_conns = src->max_idle_conns; |
Willy Tarreau | 9c538e0 | 2019-01-23 10:21:49 +0100 | [diff] [blame] | 2142 | srv->max_reuse = src->max_reuse; |
Christopher Faulet | 8ed0a3e | 2018-04-10 14:45:45 +0200 | [diff] [blame] | 2143 | |
Olivier Houchard | 8da5f98 | 2017-08-04 18:35:36 +0200 | [diff] [blame] | 2144 | if (srv_tmpl) |
| 2145 | srv->srvrq = src->srvrq; |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 2146 | |
| 2147 | srv->check.via_socks4 = src->check.via_socks4; |
| 2148 | srv->socks4_addr = src->socks4_addr; |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2149 | } |
| 2150 | |
Willy Tarreau | 198e92a | 2021-03-05 10:23:32 +0100 | [diff] [blame] | 2151 | /* allocate a server and attach it to the global servers_list. Returns |
| 2152 | * the server on success, otherwise NULL. |
| 2153 | */ |
William Lallemand | 313bfd1 | 2018-10-26 14:47:32 +0200 | [diff] [blame] | 2154 | struct server *new_server(struct proxy *proxy) |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2155 | { |
| 2156 | struct server *srv; |
| 2157 | |
| 2158 | srv = calloc(1, sizeof *srv); |
| 2159 | if (!srv) |
| 2160 | return NULL; |
| 2161 | |
| 2162 | srv->obj_type = OBJ_TYPE_SERVER; |
| 2163 | srv->proxy = proxy; |
Patrick Hemmer | 0355dab | 2018-05-11 12:52:31 -0400 | [diff] [blame] | 2164 | srv->pendconns = EB_ROOT; |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 2165 | LIST_APPEND(&servers_list, &srv->global_list); |
Emeric Brun | 0c4a8a3 | 2021-06-11 10:48:45 +0200 | [diff] [blame] | 2166 | LIST_INIT(&srv->srv_rec_item); |
Emeric Brun | f9ca5d8 | 2021-06-11 10:08:05 +0200 | [diff] [blame] | 2167 | LIST_INIT(&srv->ip_rec_item); |
Christopher Faulet | 40a007c | 2017-07-03 15:41:01 +0200 | [diff] [blame] | 2168 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 2169 | srv->next_state = SRV_ST_RUNNING; /* early server setup */ |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2170 | srv->last_change = now.tv_sec; |
| 2171 | |
Christopher Faulet | 3829046 | 2020-04-21 11:46:40 +0200 | [diff] [blame] | 2172 | srv->check.obj_type = OBJ_TYPE_CHECK; |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2173 | srv->check.status = HCHK_STATUS_INI; |
| 2174 | srv->check.server = srv; |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2175 | srv->check.proxy = proxy; |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 2176 | srv->check.tcpcheck_rules = &proxy->tcpcheck_rules; |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2177 | |
Christopher Faulet | 3829046 | 2020-04-21 11:46:40 +0200 | [diff] [blame] | 2178 | srv->agent.obj_type = OBJ_TYPE_CHECK; |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2179 | srv->agent.status = HCHK_STATUS_INI; |
| 2180 | srv->agent.server = srv; |
Willy Tarreau | 1ba3203 | 2019-01-21 07:48:26 +0100 | [diff] [blame] | 2181 | srv->agent.proxy = proxy; |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2182 | srv->xprt = srv->check.xprt = srv->agent.xprt = xprt_get(XPRT_RAW); |
Frédéric Lécaille | f46c10c | 2020-11-23 14:29:28 +0100 | [diff] [blame] | 2183 | #if defined(USE_QUIC) |
| 2184 | srv->cids = EB_ROOT_UNIQUE; |
| 2185 | #endif |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2186 | |
Amaury Denoyelle | 7f8f6cb | 2020-11-10 14:24:31 +0100 | [diff] [blame] | 2187 | srv->extra_counters = NULL; |
William Lallemand | 3ce6eed | 2021-02-08 10:43:44 +0100 | [diff] [blame] | 2188 | #ifdef USE_OPENSSL |
| 2189 | HA_RWLOCK_INIT(&srv->ssl_ctx.lock); |
| 2190 | #endif |
Amaury Denoyelle | 7f8f6cb | 2020-11-10 14:24:31 +0100 | [diff] [blame] | 2191 | |
Willy Tarreau | 975b155 | 2019-06-06 16:25:55 +0200 | [diff] [blame] | 2192 | /* please don't put default server settings here, they are set in |
Willy Tarreau | 144289b | 2021-02-12 08:19:01 +0100 | [diff] [blame] | 2193 | * proxy_preset_defaults(). |
Willy Tarreau | 975b155 | 2019-06-06 16:25:55 +0200 | [diff] [blame] | 2194 | */ |
Frédéric Lécaille | 58b207c | 2017-03-30 14:18:30 +0200 | [diff] [blame] | 2195 | return srv; |
| 2196 | } |
Frédéric Lécaille | 759ea98 | 2017-03-30 17:32:36 +0200 | [diff] [blame] | 2197 | |
Amaury Denoyelle | 828adf0 | 2021-03-16 17:20:15 +0100 | [diff] [blame] | 2198 | /* Deallocate a server <srv> and its member. <srv> must be allocated. |
| 2199 | */ |
| 2200 | void free_server(struct server *srv) |
| 2201 | { |
| 2202 | task_destroy(srv->warmup); |
| 2203 | |
| 2204 | free(srv->id); |
| 2205 | free(srv->cookie); |
| 2206 | free(srv->hostname); |
| 2207 | free(srv->hostname_dn); |
| 2208 | free((char*)srv->conf.file); |
| 2209 | free(srv->per_thr); |
| 2210 | free(srv->curr_idle_thr); |
| 2211 | free(srv->resolvers_id); |
| 2212 | free(srv->addr_node.key); |
Amaury Denoyelle | fb24794 | 2021-04-20 16:48:22 +0200 | [diff] [blame] | 2213 | free(srv->lb_nodes); |
Amaury Denoyelle | 828adf0 | 2021-03-16 17:20:15 +0100 | [diff] [blame] | 2214 | |
| 2215 | if (srv->use_ssl == 1 || srv->check.use_ssl == 1 || (srv->proxy->options & PR_O_TCPCHK_SSL)) { |
| 2216 | if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv) |
| 2217 | xprt_get(XPRT_SSL)->destroy_srv(srv); |
| 2218 | } |
| 2219 | HA_SPIN_DESTROY(&srv->lock); |
| 2220 | |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 2221 | LIST_DELETE(&srv->global_list); |
Amaury Denoyelle | 828adf0 | 2021-03-16 17:20:15 +0100 | [diff] [blame] | 2222 | |
| 2223 | EXTRA_COUNTERS_FREE(srv->extra_counters); |
| 2224 | |
| 2225 | free(srv); |
| 2226 | srv = NULL; |
| 2227 | } |
| 2228 | |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 2229 | /* |
| 2230 | * Parse as much as possible such a range string argument: low[-high] |
| 2231 | * Set <nb_low> and <nb_high> values so that they may be reused by this loop |
| 2232 | * for(int i = nb_low; i <= nb_high; i++)... with nb_low >= 1. |
| 2233 | * Fails if 'low' < 0 or 'high' is present and not higher than 'low'. |
| 2234 | * Returns 0 if succeeded, -1 if not. |
Frédéric Lécaille | b82f742 | 2017-04-13 18:24:23 +0200 | [diff] [blame] | 2235 | */ |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2236 | static int _srv_parse_tmpl_range(struct server *srv, const char *arg, |
| 2237 | int *nb_low, int *nb_high) |
Frédéric Lécaille | b82f742 | 2017-04-13 18:24:23 +0200 | [diff] [blame] | 2238 | { |
| 2239 | char *nb_high_arg; |
| 2240 | |
| 2241 | *nb_high = 0; |
| 2242 | chunk_printf(&trash, "%s", arg); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2243 | *nb_low = atoi(trash.area); |
Frédéric Lécaille | b82f742 | 2017-04-13 18:24:23 +0200 | [diff] [blame] | 2244 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2245 | if ((nb_high_arg = strchr(trash.area, '-'))) { |
Frédéric Lécaille | b82f742 | 2017-04-13 18:24:23 +0200 | [diff] [blame] | 2246 | *nb_high_arg++ = '\0'; |
| 2247 | *nb_high = atoi(nb_high_arg); |
| 2248 | } |
| 2249 | else { |
| 2250 | *nb_high += *nb_low; |
| 2251 | *nb_low = 1; |
| 2252 | } |
| 2253 | |
| 2254 | if (*nb_low < 0 || *nb_high < *nb_low) |
| 2255 | return -1; |
| 2256 | |
| 2257 | return 0; |
| 2258 | } |
| 2259 | |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2260 | /* Parse as much as possible such a range string argument: low[-high] |
| 2261 | * Set <nb_low> and <nb_high> values so that they may be reused by this loop |
| 2262 | * for(int i = nb_low; i <= nb_high; i++)... with nb_low >= 1. |
| 2263 | * |
Ilya Shipitsin | ba13f16 | 2021-03-19 22:21:44 +0500 | [diff] [blame] | 2264 | * This function is first intended to be used through parse_server to |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2265 | * initialize a new server on startup. |
| 2266 | * |
| 2267 | * Fails if 'low' < 0 or 'high' is present and not higher than 'low'. |
| 2268 | * Returns 0 if succeeded, -1 if not. |
| 2269 | */ |
| 2270 | static inline void _srv_parse_set_id_from_prefix(struct server *srv, |
| 2271 | const char *prefix, int nb) |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2272 | { |
| 2273 | chunk_printf(&trash, "%s%d", prefix, nb); |
| 2274 | free(srv->id); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2275 | srv->id = strdup(trash.area); |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2276 | } |
| 2277 | |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2278 | /* Initialize as much as possible servers from <srv> server template. |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2279 | * Note that a server template is a special server with |
| 2280 | * a few different parameters than a server which has |
| 2281 | * been parsed mostly the same way as a server. |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2282 | * |
Ilya Shipitsin | ba13f16 | 2021-03-19 22:21:44 +0500 | [diff] [blame] | 2283 | * This function is first intended to be used through parse_server to |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2284 | * initialize a new server on startup. |
| 2285 | * |
Joseph Herlant | 4446682 | 2018-11-15 08:57:51 -0800 | [diff] [blame] | 2286 | * Returns the number of servers successfully allocated, |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2287 | * 'srv' template included. |
| 2288 | */ |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2289 | static int _srv_parse_tmpl_init(struct server *srv, struct proxy *px) |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2290 | { |
| 2291 | int i; |
| 2292 | struct server *newsrv; |
| 2293 | |
| 2294 | for (i = srv->tmpl_info.nb_low + 1; i <= srv->tmpl_info.nb_high; i++) { |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2295 | newsrv = new_server(px); |
| 2296 | if (!newsrv) |
| 2297 | goto err; |
| 2298 | |
Christopher Faulet | 75bef00 | 2020-11-02 22:04:55 +0100 | [diff] [blame] | 2299 | newsrv->conf.file = strdup(srv->conf.file); |
| 2300 | newsrv->conf.line = srv->conf.line; |
| 2301 | |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2302 | srv_settings_cpy(newsrv, srv, 1); |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 2303 | srv_prepare_for_resolution(newsrv, srv->hostname); |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2304 | #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| 2305 | if (newsrv->sni_expr) { |
| 2306 | newsrv->ssl_ctx.sni = srv_sni_sample_parse_expr(newsrv, px, NULL, 0, NULL); |
| 2307 | if (!newsrv->ssl_ctx.sni) |
| 2308 | goto err; |
| 2309 | } |
| 2310 | #endif |
Emeric Brun | 0c4a8a3 | 2021-06-11 10:48:45 +0200 | [diff] [blame] | 2311 | /* append to list of servers available to receive an hostname */ |
Emeric Brun | 3ecaf53 | 2021-06-14 10:02:18 +0200 | [diff] [blame] | 2312 | if (newsrv->srvrq) |
| 2313 | LIST_APPEND(&newsrv->srvrq->attached_servers, &newsrv->srv_rec_item); |
Emeric Brun | 0c4a8a3 | 2021-06-11 10:48:45 +0200 | [diff] [blame] | 2314 | |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2315 | /* Set this new server ID. */ |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2316 | _srv_parse_set_id_from_prefix(newsrv, srv->tmpl_info.prefix, i); |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2317 | |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2318 | /* Linked backwards first. This will be restablished after parsing. */ |
| 2319 | newsrv->next = px->srv; |
| 2320 | px->srv = newsrv; |
| 2321 | } |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2322 | _srv_parse_set_id_from_prefix(srv, srv->tmpl_info.prefix, srv->tmpl_info.nb_low); |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2323 | |
| 2324 | return i - srv->tmpl_info.nb_low; |
| 2325 | |
| 2326 | err: |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2327 | _srv_parse_set_id_from_prefix(srv, srv->tmpl_info.prefix, srv->tmpl_info.nb_low); |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2328 | if (newsrv) { |
| 2329 | #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| 2330 | release_sample_expr(newsrv->ssl_ctx.sni); |
| 2331 | #endif |
| 2332 | free_check(&newsrv->agent); |
| 2333 | free_check(&newsrv->check); |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 2334 | LIST_DELETE(&newsrv->global_list); |
Frédéric Lécaille | 72ed475 | 2017-04-14 13:28:00 +0200 | [diff] [blame] | 2335 | } |
| 2336 | free(newsrv); |
| 2337 | return i - srv->tmpl_info.nb_low; |
| 2338 | } |
| 2339 | |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2340 | /* Allocate a new server pointed by <srv> and try to parse the first arguments |
| 2341 | * in <args> as an address for a server or an address-range for a template or |
| 2342 | * nothing for a default-server. <cur_arg> is incremented to the next argument. |
| 2343 | * |
Ilya Shipitsin | ba13f16 | 2021-03-19 22:21:44 +0500 | [diff] [blame] | 2344 | * This function is first intended to be used through parse_server to |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2345 | * initialize a new server on startup. |
| 2346 | * |
| 2347 | * A mask of errors is returned. On a parsing error, ERR_FATAL is set. In case |
| 2348 | * of memory exhaustion, ERR_ABORT is set. If the server cannot be allocated, |
| 2349 | * <srv> will be set to NULL. |
| 2350 | */ |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2351 | static int _srv_parse_init(struct server **srv, char **args, int *cur_arg, |
| 2352 | struct proxy *curproxy, |
| 2353 | int parse_flags, char **errmsg) |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2354 | { |
| 2355 | struct server *newsrv = NULL; |
Frédéric Lécaille | b82f742 | 2017-04-13 18:24:23 +0200 | [diff] [blame] | 2356 | const char *err = NULL; |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2357 | int err_code = 0; |
Willy Tarreau | 07101d5 | 2015-09-08 16:16:35 +0200 | [diff] [blame] | 2358 | char *fqdn = NULL; |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2359 | int tmpl_range_low = 0, tmpl_range_high = 0; |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2360 | |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2361 | *srv = NULL; |
| 2362 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2363 | /* There is no mandatory first arguments for default server. */ |
| 2364 | if (parse_flags & SRV_PARSE_PARSE_ADDR) { |
| 2365 | if (parse_flags & SRV_PARSE_TEMPLATE) { |
| 2366 | if (!*args[3]) { |
| 2367 | /* 'server-template' line number of argument check. */ |
| 2368 | memprintf(errmsg, "'%s' expects <prefix> <nb | range> <addr>[:<port>] as arguments.", |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2369 | args[0]); |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2370 | err_code |= ERR_ALERT | ERR_FATAL; |
| 2371 | goto out; |
Frédéric Lécaille | b82f742 | 2017-04-13 18:24:23 +0200 | [diff] [blame] | 2372 | } |
| 2373 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2374 | err = invalid_prefix_char(args[1]); |
Frédéric Lécaille | b82f742 | 2017-04-13 18:24:23 +0200 | [diff] [blame] | 2375 | } |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2376 | else { |
| 2377 | if (!*args[2]) { |
| 2378 | /* 'server' line number of argument check. */ |
| 2379 | memprintf(errmsg, "'%s' expects <name> and <addr>[:<port>] as arguments.", |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2380 | args[0]); |
Frédéric Lécaille | b82f742 | 2017-04-13 18:24:23 +0200 | [diff] [blame] | 2381 | err_code |= ERR_ALERT | ERR_FATAL; |
| 2382 | goto out; |
| 2383 | } |
| 2384 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2385 | err = invalid_char(args[1]); |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2386 | } |
| 2387 | |
Frédéric Lécaille | b82f742 | 2017-04-13 18:24:23 +0200 | [diff] [blame] | 2388 | if (err) { |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2389 | memprintf(errmsg, "character '%c' is not permitted in %s %s '%s'.", |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2390 | *err, args[0], !(parse_flags & SRV_PARSE_TEMPLATE) ? "name" : "prefix", args[1]); |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2391 | err_code |= ERR_ALERT | ERR_FATAL; |
| 2392 | goto out; |
| 2393 | } |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2394 | } |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2395 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2396 | *cur_arg = 2; |
| 2397 | if (parse_flags & SRV_PARSE_TEMPLATE) { |
| 2398 | /* Parse server-template <nb | range> arg. */ |
| 2399 | if (_srv_parse_tmpl_range(newsrv, args[*cur_arg], &tmpl_range_low, &tmpl_range_high) < 0) { |
| 2400 | memprintf(errmsg, "Wrong %s number or range arg '%s'.", |
| 2401 | args[0], args[*cur_arg]); |
| 2402 | err_code |= ERR_ALERT | ERR_FATAL; |
| 2403 | goto out; |
Frédéric Lécaille | b82f742 | 2017-04-13 18:24:23 +0200 | [diff] [blame] | 2404 | } |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2405 | (*cur_arg)++; |
| 2406 | } |
Frédéric Lécaille | b82f742 | 2017-04-13 18:24:23 +0200 | [diff] [blame] | 2407 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2408 | if (!(parse_flags & SRV_PARSE_DEFAULT_SERVER)) { |
| 2409 | struct sockaddr_storage *sk; |
| 2410 | int port1, port2, port; |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2411 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2412 | *srv = newsrv = new_server(curproxy); |
| 2413 | if (!newsrv) { |
| 2414 | memprintf(errmsg, "out of memory."); |
| 2415 | err_code |= ERR_ALERT | ERR_ABORT; |
| 2416 | goto out; |
| 2417 | } |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2418 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2419 | if (parse_flags & SRV_PARSE_TEMPLATE) { |
| 2420 | newsrv->tmpl_info.nb_low = tmpl_range_low; |
| 2421 | newsrv->tmpl_info.nb_high = tmpl_range_high; |
| 2422 | } |
Frédéric Lécaille | b82f742 | 2017-04-13 18:24:23 +0200 | [diff] [blame] | 2423 | |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 2424 | if (parse_flags & SRV_PARSE_DYNAMIC) |
| 2425 | newsrv->flags |= SRV_F_DYNAMIC; |
| 2426 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2427 | /* Note: for a server template, its id is its prefix. |
| 2428 | * This is a temporary id which will be used for server allocations to come |
| 2429 | * after parsing. |
| 2430 | */ |
| 2431 | if (!(parse_flags & SRV_PARSE_TEMPLATE)) |
| 2432 | newsrv->id = strdup(args[1]); |
| 2433 | else |
| 2434 | newsrv->tmpl_info.prefix = strdup(args[1]); |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2435 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2436 | /* several ways to check the port component : |
| 2437 | * - IP => port=+0, relative (IPv4 only) |
| 2438 | * - IP: => port=+0, relative |
| 2439 | * - IP:N => port=N, absolute |
| 2440 | * - IP:+N => port=+N, relative |
| 2441 | * - IP:-N => port=-N, relative |
| 2442 | */ |
| 2443 | if (!(parse_flags & SRV_PARSE_PARSE_ADDR)) |
| 2444 | goto skip_addr; |
Frédéric Lécaille | 355b203 | 2019-01-11 14:06:12 +0100 | [diff] [blame] | 2445 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2446 | sk = str2sa_range(args[*cur_arg], &port, &port1, &port2, NULL, NULL, |
| 2447 | errmsg, NULL, &fqdn, |
| 2448 | (parse_flags & SRV_PARSE_INITIAL_RESOLVE ? PA_O_RESOLVE : 0) | PA_O_PORT_OK | PA_O_PORT_OFS | PA_O_STREAM | PA_O_XPRT | PA_O_CONNECT); |
| 2449 | if (!sk) { |
| 2450 | memprintf(errmsg, "'%s %s' : %s", args[0], args[1], *errmsg); |
| 2451 | err_code |= ERR_ALERT | ERR_FATAL; |
| 2452 | goto out; |
| 2453 | } |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2454 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2455 | if (!port1 || !port2) { |
| 2456 | /* no port specified, +offset, -offset */ |
| 2457 | newsrv->flags |= SRV_F_MAPPORTS; |
| 2458 | } |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2459 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2460 | /* save hostname and create associated name resolution */ |
| 2461 | if (fqdn) { |
| 2462 | if (fqdn[0] == '_') { /* SRV record */ |
| 2463 | /* Check if a SRV request already exists, and if not, create it */ |
| 2464 | if ((newsrv->srvrq = find_srvrq_by_name(fqdn, curproxy)) == NULL) |
| 2465 | newsrv->srvrq = new_resolv_srvrq(newsrv, fqdn); |
| 2466 | if (newsrv->srvrq == NULL) { |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 2467 | err_code |= ERR_ALERT | ERR_FATAL; |
| 2468 | goto out; |
Baptiste Assmann | 4f91f7e | 2017-05-03 12:09:54 +0200 | [diff] [blame] | 2469 | } |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 2470 | } |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2471 | else if (srv_prepare_for_resolution(newsrv, fqdn) == -1) { |
| 2472 | memprintf(errmsg, "Can't create DNS resolution for server '%s'", |
| 2473 | newsrv->id); |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2474 | err_code |= ERR_ALERT | ERR_FATAL; |
| 2475 | goto out; |
| 2476 | } |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2477 | } |
Frédéric Lécaille | 5c3cd97 | 2017-03-15 16:36:09 +0100 | [diff] [blame] | 2478 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2479 | newsrv->addr = *sk; |
| 2480 | newsrv->svc_port = port; |
| 2481 | // we don't need to lock the server here, because |
| 2482 | // we are in the process of initializing |
| 2483 | srv_set_addr_desc(newsrv); |
| 2484 | |
| 2485 | if (!newsrv->srvrq && !newsrv->hostname && !protocol_by_family(newsrv->addr.ss_family)) { |
| 2486 | memprintf(errmsg, "Unknown protocol family %d '%s'", |
| 2487 | newsrv->addr.ss_family, args[*cur_arg]); |
| 2488 | err_code |= ERR_ALERT | ERR_FATAL; |
| 2489 | goto out; |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2490 | } |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2491 | |
| 2492 | (*cur_arg)++; |
| 2493 | skip_addr: |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 2494 | if (!(parse_flags & SRV_PARSE_DYNAMIC)) { |
| 2495 | /* Copy default server settings to new server */ |
| 2496 | srv_settings_cpy(newsrv, &curproxy->defsrv, 0); |
| 2497 | } else { |
| 2498 | /* Initialize dynamic server weight to 1 */ |
| 2499 | newsrv->uweight = newsrv->iweight = 1; |
| 2500 | |
| 2501 | /* A dynamic server is disabled on startup */ |
| 2502 | newsrv->next_admin = SRV_ADMF_FMAINT; |
| 2503 | newsrv->next_state = SRV_ST_STOPPED; |
| 2504 | server_recalc_eweight(newsrv, 0); |
| 2505 | } |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2506 | HA_SPIN_INIT(&newsrv->lock); |
| 2507 | } |
| 2508 | else { |
| 2509 | *srv = newsrv = &curproxy->defsrv; |
| 2510 | *cur_arg = 1; |
| 2511 | newsrv->resolv_opts.family_prio = AF_INET6; |
| 2512 | newsrv->resolv_opts.accept_duplicate_ip = 0; |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2513 | } |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2514 | |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2515 | free(fqdn); |
| 2516 | return 0; |
Willy Tarreau | 9faebe3 | 2019-06-07 19:00:37 +0200 | [diff] [blame] | 2517 | |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2518 | out: |
| 2519 | free(fqdn); |
| 2520 | return err_code; |
| 2521 | } |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2522 | |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2523 | /* Parse the server keyword in <args>. |
| 2524 | * <cur_arg> is incremented beyond the keyword optional value. Note that this |
| 2525 | * might not be the case if an error is reported. |
| 2526 | * |
Ilya Shipitsin | ba13f16 | 2021-03-19 22:21:44 +0500 | [diff] [blame] | 2527 | * This function is first intended to be used through parse_server to |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2528 | * initialize a new server on startup. |
| 2529 | * |
| 2530 | * A mask of errors is returned. ERR_FATAL is set if the parsing should be |
| 2531 | * interrupted. |
| 2532 | */ |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2533 | static int _srv_parse_kw(struct server *srv, char **args, int *cur_arg, |
| 2534 | struct proxy *curproxy, |
| 2535 | int parse_flags, char **errmsg) |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2536 | { |
| 2537 | int err_code = 0; |
| 2538 | struct srv_kw *kw; |
| 2539 | const char *best; |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2540 | |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2541 | kw = srv_find_kw(args[*cur_arg]); |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2542 | if (!kw) { |
| 2543 | best = srv_find_best_kw(args[*cur_arg]); |
| 2544 | if (best) |
| 2545 | memprintf(errmsg, "unknown keyword '%s'; did you mean '%s' maybe ?", |
| 2546 | args[*cur_arg], best); |
| 2547 | else |
| 2548 | memprintf(errmsg, "unknown keyword '%s'.", |
| 2549 | args[*cur_arg]); |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2550 | |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2551 | return ERR_ALERT | ERR_FATAL; |
| 2552 | } |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2553 | |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2554 | if (!kw->parse) { |
| 2555 | memprintf(errmsg, "'%s' option is not implemented in this version (check build options)", |
| 2556 | args[*cur_arg]); |
| 2557 | err_code = ERR_ALERT | ERR_FATAL; |
| 2558 | goto out; |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2559 | } |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2560 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2561 | if ((parse_flags & SRV_PARSE_DEFAULT_SERVER) && !kw->default_ok) { |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2562 | memprintf(errmsg, "'%s' option is not accepted in default-server sections", |
| 2563 | args[*cur_arg]); |
| 2564 | err_code = ERR_ALERT; |
| 2565 | goto out; |
| 2566 | } |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 2567 | else if ((parse_flags & SRV_PARSE_DYNAMIC) && !kw->dynamic_ok) { |
| 2568 | memprintf(errmsg, "'%s' option is not accepted for dynamic server", |
| 2569 | args[*cur_arg]); |
| 2570 | err_code |= ERR_ALERT; |
| 2571 | goto out; |
| 2572 | } |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2573 | |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2574 | err_code = kw->parse(args, cur_arg, curproxy, srv, errmsg); |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2575 | |
| 2576 | out: |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2577 | if (kw->skip != -1) |
| 2578 | *cur_arg += 1 + kw->skip; |
| 2579 | |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2580 | return err_code; |
| 2581 | } |
| 2582 | |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2583 | #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
Ilya Shipitsin | ba13f16 | 2021-03-19 22:21:44 +0500 | [diff] [blame] | 2584 | /* This function is first intended to be used through parse_server to |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2585 | * initialize a new server on startup. |
| 2586 | */ |
| 2587 | static int _srv_parse_sni_expr_init(char **args, int cur_arg, |
| 2588 | struct server *srv, struct proxy *proxy, |
| 2589 | char **errmsg) |
| 2590 | { |
| 2591 | int ret; |
| 2592 | |
| 2593 | if (!srv->sni_expr) |
| 2594 | return 0; |
| 2595 | |
| 2596 | ret = server_parse_sni_expr(srv, proxy, errmsg); |
| 2597 | if (!ret) |
| 2598 | return 0; |
| 2599 | |
| 2600 | return ret; |
| 2601 | } |
| 2602 | #endif |
| 2603 | |
| 2604 | /* Server initializations finalization. |
| 2605 | * Initialize health check, agent check and SNI expression if enabled. |
| 2606 | * Must not be called for a default server instance. |
| 2607 | * |
Ilya Shipitsin | ba13f16 | 2021-03-19 22:21:44 +0500 | [diff] [blame] | 2608 | * This function is first intended to be used through parse_server to |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2609 | * initialize a new server on startup. |
| 2610 | */ |
| 2611 | static int _srv_parse_finalize(char **args, int cur_arg, |
| 2612 | struct server *srv, struct proxy *px, |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 2613 | int parse_flags, char **errmsg) |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2614 | { |
| 2615 | #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| 2616 | int ret; |
| 2617 | #endif |
| 2618 | |
| 2619 | if (srv->do_check && srv->trackit) { |
| 2620 | memprintf(errmsg, "unable to enable checks and tracking at the same time!"); |
| 2621 | return ERR_ALERT | ERR_FATAL; |
| 2622 | } |
| 2623 | |
| 2624 | if (srv->do_agent && !srv->agent.port) { |
| 2625 | memprintf(errmsg, "server %s does not have agent port. Agent check has been disabled.", |
| 2626 | srv->id); |
| 2627 | return ERR_ALERT | ERR_FATAL; |
| 2628 | } |
| 2629 | |
| 2630 | #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| 2631 | if ((ret = _srv_parse_sni_expr_init(args, cur_arg, srv, px, errmsg)) != 0) |
| 2632 | return ret; |
| 2633 | #endif |
| 2634 | |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 2635 | /* A dynamic server is disabled on startup. It must not be counted as |
| 2636 | * an active backend entry. |
| 2637 | */ |
| 2638 | if (!(parse_flags & SRV_PARSE_DYNAMIC)) { |
| 2639 | if (srv->flags & SRV_F_BACKUP) |
| 2640 | px->srv_bck++; |
| 2641 | else |
| 2642 | px->srv_act++; |
| 2643 | } |
| 2644 | |
Amaury Denoyelle | 7d27efe | 2021-03-17 14:25:39 +0100 | [diff] [blame] | 2645 | srv_lb_commit_status(srv); |
| 2646 | |
| 2647 | return 0; |
| 2648 | } |
| 2649 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2650 | int parse_server(const char *file, int linenum, char **args, |
| 2651 | struct proxy *curproxy, const struct proxy *defproxy, |
| 2652 | int parse_flags) |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2653 | { |
| 2654 | struct server *newsrv = NULL; |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2655 | char *errmsg = NULL; |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2656 | int err_code = 0; |
| 2657 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2658 | int cur_arg; |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2659 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2660 | if (!(parse_flags & SRV_PARSE_DEFAULT_SERVER) && curproxy == defproxy) { |
| 2661 | ha_alert("parsing [%s:%d] : '%s' not allowed in 'defaults' section.\n", file, linenum, args[0]); |
| 2662 | err_code |= ERR_ALERT | ERR_FATAL; |
| 2663 | goto out; |
| 2664 | } |
| 2665 | else if (failifnotcap(curproxy, PR_CAP_BE, file, linenum, args[0], NULL)) { |
| 2666 | err_code |= ERR_ALERT | ERR_FATAL; |
| 2667 | goto out; |
| 2668 | } |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2669 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2670 | if ((parse_flags & (SRV_PARSE_IN_PEER_SECTION|SRV_PARSE_PARSE_ADDR)) == |
| 2671 | (SRV_PARSE_IN_PEER_SECTION|SRV_PARSE_PARSE_ADDR)) { |
| 2672 | if (!*args[2]) |
| 2673 | return 0; |
| 2674 | } |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2675 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2676 | err_code = _srv_parse_init(&newsrv, args, &cur_arg, curproxy, |
| 2677 | parse_flags, &errmsg); |
| 2678 | if (errmsg) { |
| 2679 | ha_alert("parsing [%s:%d] : %s\n", file, linenum, errmsg); |
| 2680 | free(errmsg); |
| 2681 | } |
Amaury Denoyelle | cf58dd7 | 2021-03-08 16:35:54 +0100 | [diff] [blame] | 2682 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2683 | /* the servers are linked backwards first */ |
| 2684 | if (newsrv && !(parse_flags & SRV_PARSE_DEFAULT_SERVER)) { |
| 2685 | newsrv->next = curproxy->srv; |
| 2686 | curproxy->srv = newsrv; |
| 2687 | } |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2688 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2689 | if (err_code & ERR_CODE) |
| 2690 | goto out; |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2691 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2692 | newsrv->conf.file = strdup(file); |
| 2693 | newsrv->conf.line = linenum; |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2694 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2695 | while (*args[cur_arg]) { |
| 2696 | errmsg = NULL; |
| 2697 | err_code = _srv_parse_kw(newsrv, args, &cur_arg, curproxy, |
| 2698 | parse_flags, &errmsg); |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2699 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2700 | if (err_code & ERR_ALERT) { |
| 2701 | display_parser_err(file, linenum, args, cur_arg, err_code, &errmsg); |
| 2702 | free(errmsg); |
Amaury Denoyelle | a8f442e | 2021-03-08 10:29:33 +0100 | [diff] [blame] | 2703 | } |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2704 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2705 | if (err_code & ERR_FATAL) |
| 2706 | goto out; |
| 2707 | } |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2708 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2709 | if (!(parse_flags & SRV_PARSE_DEFAULT_SERVER)) { |
Amaury Denoyelle | 76e10e7 | 2021-03-08 17:08:01 +0100 | [diff] [blame] | 2710 | err_code |= _srv_parse_finalize(args, cur_arg, newsrv, curproxy, parse_flags, &errmsg); |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2711 | if (err_code) { |
| 2712 | display_parser_err(file, linenum, args, cur_arg, err_code, &errmsg); |
| 2713 | free(errmsg); |
Amaury Denoyelle | 9394a94 | 2021-03-08 11:20:52 +0100 | [diff] [blame] | 2714 | } |
| 2715 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2716 | if (err_code & ERR_FATAL) |
| 2717 | goto out; |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2718 | } |
Amaury Denoyelle | cf58dd7 | 2021-03-08 16:35:54 +0100 | [diff] [blame] | 2719 | |
Amaury Denoyelle | 30c0537 | 2021-03-08 16:36:46 +0100 | [diff] [blame] | 2720 | if (parse_flags & SRV_PARSE_TEMPLATE) |
| 2721 | _srv_parse_tmpl_init(newsrv, curproxy); |
| 2722 | |
Amaury Denoyelle | f88af88 | 2021-06-08 17:00:20 +0200 | [diff] [blame^] | 2723 | /* If the server id is fixed, insert it in the proxy used_id tree. |
| 2724 | * This is needed to detect a later duplicate id via srv_parse_id. |
| 2725 | * |
| 2726 | * If no is specified, a dynamic one is generated in |
| 2727 | * check_config_validity. |
| 2728 | */ |
| 2729 | if (newsrv->flags & SRV_F_FORCED_ID) |
| 2730 | eb32_insert(&curproxy->conf.used_server_id, &newsrv->conf.id); |
| 2731 | |
Amaury Denoyelle | 24abb0c | 2021-05-07 15:13:51 +0200 | [diff] [blame] | 2732 | HA_DIAG_WARNING_COND((curproxy->cap & PR_CAP_LB) && !newsrv->uweight, |
Amaury Denoyelle | da0e7f6 | 2021-03-30 10:26:27 +0200 | [diff] [blame] | 2733 | "parsing [%s:%d] : 'server %s' : configured with weight of 0 will never be selected by load balancing algorithms\n", |
| 2734 | file, linenum, newsrv->id); |
| 2735 | |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2736 | return 0; |
| 2737 | |
| 2738 | out: |
Willy Tarreau | 272adea | 2014-03-31 10:39:59 +0200 | [diff] [blame] | 2739 | return err_code; |
| 2740 | } |
| 2741 | |
Baptiste Assmann | 19a106d | 2015-07-08 22:03:56 +0200 | [diff] [blame] | 2742 | /* Returns a pointer to the first server matching either id <id>. |
| 2743 | * NULL is returned if no match is found. |
| 2744 | * the lookup is performed in the backend <bk> |
| 2745 | */ |
| 2746 | struct server *server_find_by_id(struct proxy *bk, int id) |
| 2747 | { |
| 2748 | struct eb32_node *eb32; |
| 2749 | struct server *curserver; |
| 2750 | |
| 2751 | if (!bk || (id ==0)) |
| 2752 | return NULL; |
| 2753 | |
| 2754 | /* <bk> has no backend capabilities, so it can't have a server */ |
| 2755 | if (!(bk->cap & PR_CAP_BE)) |
| 2756 | return NULL; |
| 2757 | |
| 2758 | curserver = NULL; |
| 2759 | |
| 2760 | eb32 = eb32_lookup(&bk->conf.used_server_id, id); |
| 2761 | if (eb32) |
| 2762 | curserver = container_of(eb32, struct server, conf.id); |
| 2763 | |
| 2764 | return curserver; |
| 2765 | } |
| 2766 | |
| 2767 | /* Returns a pointer to the first server matching either name <name>, or id |
| 2768 | * if <name> starts with a '#'. NULL is returned if no match is found. |
| 2769 | * the lookup is performed in the backend <bk> |
| 2770 | */ |
| 2771 | struct server *server_find_by_name(struct proxy *bk, const char *name) |
| 2772 | { |
| 2773 | struct server *curserver; |
| 2774 | |
| 2775 | if (!bk || !name) |
| 2776 | return NULL; |
| 2777 | |
| 2778 | /* <bk> has no backend capabilities, so it can't have a server */ |
| 2779 | if (!(bk->cap & PR_CAP_BE)) |
| 2780 | return NULL; |
| 2781 | |
| 2782 | curserver = NULL; |
| 2783 | if (*name == '#') { |
| 2784 | curserver = server_find_by_id(bk, atoi(name + 1)); |
| 2785 | if (curserver) |
| 2786 | return curserver; |
| 2787 | } |
| 2788 | else { |
| 2789 | curserver = bk->srv; |
| 2790 | |
| 2791 | while (curserver && (strcmp(curserver->id, name) != 0)) |
| 2792 | curserver = curserver->next; |
| 2793 | |
| 2794 | if (curserver) |
| 2795 | return curserver; |
| 2796 | } |
| 2797 | |
| 2798 | return NULL; |
| 2799 | } |
| 2800 | |
| 2801 | struct server *server_find_best_match(struct proxy *bk, char *name, int id, int *diff) |
| 2802 | { |
| 2803 | struct server *byname; |
| 2804 | struct server *byid; |
| 2805 | |
| 2806 | if (!name && !id) |
| 2807 | return NULL; |
| 2808 | |
| 2809 | if (diff) |
| 2810 | *diff = 0; |
| 2811 | |
| 2812 | byname = byid = NULL; |
| 2813 | |
| 2814 | if (name) { |
| 2815 | byname = server_find_by_name(bk, name); |
| 2816 | if (byname && (!id || byname->puid == id)) |
| 2817 | return byname; |
| 2818 | } |
| 2819 | |
| 2820 | /* remaining possibilities : |
| 2821 | * - name not set |
| 2822 | * - name set but not found |
| 2823 | * - name found but ID doesn't match |
| 2824 | */ |
| 2825 | if (id) { |
| 2826 | byid = server_find_by_id(bk, id); |
| 2827 | if (byid) { |
| 2828 | if (byname) { |
| 2829 | /* use id only if forced by configuration */ |
| 2830 | if (byid->flags & SRV_F_FORCED_ID) { |
| 2831 | if (diff) |
| 2832 | *diff |= 2; |
| 2833 | return byid; |
| 2834 | } |
| 2835 | else { |
| 2836 | if (diff) |
| 2837 | *diff |= 1; |
| 2838 | return byname; |
| 2839 | } |
| 2840 | } |
| 2841 | |
| 2842 | /* remaining possibilities: |
| 2843 | * - name not set |
| 2844 | * - name set but not found |
| 2845 | */ |
| 2846 | if (name && diff) |
| 2847 | *diff |= 2; |
| 2848 | return byid; |
| 2849 | } |
| 2850 | |
| 2851 | /* id bot found */ |
| 2852 | if (byname) { |
| 2853 | if (diff) |
| 2854 | *diff |= 1; |
| 2855 | return byname; |
| 2856 | } |
| 2857 | } |
| 2858 | |
| 2859 | return NULL; |
| 2860 | } |
| 2861 | |
Simon Horman | 7d09b9a | 2013-02-12 10:45:51 +0900 | [diff] [blame] | 2862 | /* |
Baptiste Assmann | 14e4014 | 2015-04-14 01:13:07 +0200 | [diff] [blame] | 2863 | * update a server's current IP address. |
| 2864 | * ip is a pointer to the new IP address, whose address family is ip_sin_family. |
| 2865 | * ip is in network format. |
| 2866 | * updater is a string which contains an information about the requester of the update. |
| 2867 | * updater is used if not NULL. |
| 2868 | * |
| 2869 | * A log line and a stderr warning message is generated based on server's backend options. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 2870 | * |
| 2871 | * Must be called with the server lock held. |
Baptiste Assmann | 14e4014 | 2015-04-14 01:13:07 +0200 | [diff] [blame] | 2872 | */ |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 2873 | int srv_update_addr(struct server *s, void *ip, int ip_sin_family, const char *updater) |
Baptiste Assmann | 14e4014 | 2015-04-14 01:13:07 +0200 | [diff] [blame] | 2874 | { |
Christopher Faulet | d6c6b5f | 2020-09-08 10:27:24 +0200 | [diff] [blame] | 2875 | /* save the new IP family & address if necessary */ |
| 2876 | switch (ip_sin_family) { |
| 2877 | case AF_INET: |
| 2878 | if (s->addr.ss_family == ip_sin_family && |
| 2879 | !memcmp(ip, &((struct sockaddr_in *)&s->addr)->sin_addr.s_addr, 4)) |
| 2880 | return 0; |
| 2881 | break; |
| 2882 | case AF_INET6: |
| 2883 | if (s->addr.ss_family == ip_sin_family && |
| 2884 | !memcmp(ip, &((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr, 16)) |
| 2885 | return 0; |
| 2886 | break; |
| 2887 | }; |
| 2888 | |
Baptiste Assmann | 14e4014 | 2015-04-14 01:13:07 +0200 | [diff] [blame] | 2889 | /* generates a log line and a warning on stderr */ |
| 2890 | if (1) { |
| 2891 | /* book enough space for both IPv4 and IPv6 */ |
| 2892 | char oldip[INET6_ADDRSTRLEN]; |
| 2893 | char newip[INET6_ADDRSTRLEN]; |
| 2894 | |
| 2895 | memset(oldip, '\0', INET6_ADDRSTRLEN); |
| 2896 | memset(newip, '\0', INET6_ADDRSTRLEN); |
| 2897 | |
| 2898 | /* copy old IP address in a string */ |
| 2899 | switch (s->addr.ss_family) { |
| 2900 | case AF_INET: |
| 2901 | inet_ntop(s->addr.ss_family, &((struct sockaddr_in *)&s->addr)->sin_addr, oldip, INET_ADDRSTRLEN); |
| 2902 | break; |
| 2903 | case AF_INET6: |
| 2904 | inet_ntop(s->addr.ss_family, &((struct sockaddr_in6 *)&s->addr)->sin6_addr, oldip, INET6_ADDRSTRLEN); |
| 2905 | break; |
Christopher Faulet | b0b7607 | 2020-09-08 10:38:40 +0200 | [diff] [blame] | 2906 | default: |
| 2907 | strcpy(oldip, "(none)"); |
| 2908 | break; |
Baptiste Assmann | 14e4014 | 2015-04-14 01:13:07 +0200 | [diff] [blame] | 2909 | }; |
| 2910 | |
| 2911 | /* copy new IP address in a string */ |
| 2912 | switch (ip_sin_family) { |
| 2913 | case AF_INET: |
| 2914 | inet_ntop(ip_sin_family, ip, newip, INET_ADDRSTRLEN); |
| 2915 | break; |
| 2916 | case AF_INET6: |
| 2917 | inet_ntop(ip_sin_family, ip, newip, INET6_ADDRSTRLEN); |
| 2918 | break; |
| 2919 | }; |
| 2920 | |
| 2921 | /* save log line into a buffer */ |
| 2922 | chunk_printf(&trash, "%s/%s changed its IP from %s to %s by %s", |
| 2923 | s->proxy->id, s->id, oldip, newip, updater); |
| 2924 | |
| 2925 | /* write the buffer on stderr */ |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2926 | ha_warning("%s.\n", trash.area); |
Baptiste Assmann | 14e4014 | 2015-04-14 01:13:07 +0200 | [diff] [blame] | 2927 | |
| 2928 | /* send a log */ |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2929 | send_log(s->proxy, LOG_NOTICE, "%s.\n", trash.area); |
Baptiste Assmann | 14e4014 | 2015-04-14 01:13:07 +0200 | [diff] [blame] | 2930 | } |
| 2931 | |
| 2932 | /* save the new IP family */ |
| 2933 | s->addr.ss_family = ip_sin_family; |
| 2934 | /* save the new IP address */ |
| 2935 | switch (ip_sin_family) { |
| 2936 | case AF_INET: |
Willy Tarreau | eec1d38 | 2016-07-13 11:59:39 +0200 | [diff] [blame] | 2937 | memcpy(&((struct sockaddr_in *)&s->addr)->sin_addr.s_addr, ip, 4); |
Baptiste Assmann | 14e4014 | 2015-04-14 01:13:07 +0200 | [diff] [blame] | 2938 | break; |
| 2939 | case AF_INET6: |
| 2940 | memcpy(((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr, ip, 16); |
| 2941 | break; |
| 2942 | }; |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 2943 | srv_set_dyncookie(s); |
Thayne McCombs | 92149f9 | 2020-11-20 01:28:26 -0700 | [diff] [blame] | 2944 | srv_set_addr_desc(s); |
Baptiste Assmann | 14e4014 | 2015-04-14 01:13:07 +0200 | [diff] [blame] | 2945 | |
| 2946 | return 0; |
| 2947 | } |
| 2948 | |
William Dauchy | 7cabc06 | 2021-02-11 22:51:24 +0100 | [diff] [blame] | 2949 | /* update agent health check address and port |
| 2950 | * addr can be ip4/ip6 or a hostname |
| 2951 | * if one error occurs, don't apply anything |
| 2952 | * must be called with the server lock held. |
| 2953 | */ |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 2954 | const char *srv_update_agent_addr_port(struct server *s, const char *addr, const char *port) |
William Dauchy | 7cabc06 | 2021-02-11 22:51:24 +0100 | [diff] [blame] | 2955 | { |
| 2956 | struct sockaddr_storage sk; |
| 2957 | struct buffer *msg; |
| 2958 | int new_port; |
| 2959 | |
| 2960 | msg = get_trash_chunk(); |
| 2961 | chunk_reset(msg); |
| 2962 | |
| 2963 | if (!(s->agent.state & CHK_ST_ENABLED)) { |
| 2964 | chunk_strcat(msg, "agent checks are not enabled on this server"); |
| 2965 | goto out; |
| 2966 | } |
| 2967 | if (addr) { |
| 2968 | memset(&sk, 0, sizeof(struct sockaddr_storage)); |
| 2969 | if (str2ip(addr, &sk) == NULL) { |
| 2970 | chunk_appendf(msg, "invalid addr '%s'", addr); |
| 2971 | goto out; |
| 2972 | } |
| 2973 | } |
| 2974 | if (port) { |
| 2975 | if (strl2irc(port, strlen(port), &new_port) != 0) { |
| 2976 | chunk_appendf(msg, "provided port is not an integer"); |
| 2977 | goto out; |
| 2978 | } |
| 2979 | if (new_port < 0 || new_port > 65535) { |
| 2980 | chunk_appendf(msg, "provided port is invalid"); |
| 2981 | goto out; |
| 2982 | } |
| 2983 | } |
| 2984 | out: |
| 2985 | if (msg->data) |
| 2986 | return msg->area; |
| 2987 | else { |
| 2988 | if (addr) |
| 2989 | set_srv_agent_addr(s, &sk); |
| 2990 | if (port) |
| 2991 | set_srv_agent_port(s, new_port); |
| 2992 | } |
| 2993 | return NULL; |
| 2994 | } |
| 2995 | |
William Dauchy | b456e1f | 2021-02-11 22:51:23 +0100 | [diff] [blame] | 2996 | /* update server health check address and port |
| 2997 | * addr must be ip4 or ip6, it won't be resolved |
| 2998 | * if one error occurs, don't apply anything |
| 2999 | * must be called with the server lock held. |
| 3000 | */ |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 3001 | const char *srv_update_check_addr_port(struct server *s, const char *addr, const char *port) |
William Dauchy | b456e1f | 2021-02-11 22:51:23 +0100 | [diff] [blame] | 3002 | { |
| 3003 | struct sockaddr_storage sk; |
| 3004 | struct buffer *msg; |
| 3005 | int new_port; |
| 3006 | |
| 3007 | msg = get_trash_chunk(); |
| 3008 | chunk_reset(msg); |
| 3009 | |
| 3010 | if (!(s->check.state & CHK_ST_ENABLED)) { |
| 3011 | chunk_strcat(msg, "health checks are not enabled on this server"); |
| 3012 | goto out; |
| 3013 | } |
| 3014 | if (addr) { |
| 3015 | memset(&sk, 0, sizeof(struct sockaddr_storage)); |
| 3016 | if (str2ip2(addr, &sk, 0) == NULL) { |
| 3017 | chunk_appendf(msg, "invalid addr '%s'", addr); |
| 3018 | goto out; |
| 3019 | } |
| 3020 | } |
| 3021 | if (port) { |
| 3022 | if (strl2irc(port, strlen(port), &new_port) != 0) { |
| 3023 | chunk_appendf(msg, "provided port is not an integer"); |
| 3024 | goto out; |
| 3025 | } |
| 3026 | if (new_port < 0 || new_port > 65535) { |
| 3027 | chunk_appendf(msg, "provided port is invalid"); |
| 3028 | goto out; |
| 3029 | } |
| 3030 | /* prevent the update of port to 0 if MAPPORTS are in use */ |
| 3031 | if ((s->flags & SRV_F_MAPPORTS) && new_port == 0) { |
| 3032 | chunk_appendf(msg, "can't unset 'port' since MAPPORTS is in use"); |
| 3033 | goto out; |
| 3034 | } |
| 3035 | } |
| 3036 | out: |
| 3037 | if (msg->data) |
| 3038 | return msg->area; |
| 3039 | else { |
| 3040 | if (addr) |
| 3041 | s->check.addr = sk; |
| 3042 | if (port) |
| 3043 | s->check.port = new_port; |
| 3044 | } |
| 3045 | return NULL; |
| 3046 | } |
| 3047 | |
Baptiste Assmann | 14e4014 | 2015-04-14 01:13:07 +0200 | [diff] [blame] | 3048 | /* |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3049 | * This function update a server's addr and port only for AF_INET and AF_INET6 families. |
| 3050 | * |
| 3051 | * Caller can pass its name through <updater> to get it integrated in the response message |
| 3052 | * returned by the function. |
| 3053 | * |
| 3054 | * The function first does the following, in that order: |
| 3055 | * - validates the new addr and/or port |
| 3056 | * - checks if an update is required (new IP or port is different than current ones) |
| 3057 | * - checks the update is allowed: |
| 3058 | * - don't switch from/to a family other than AF_INET4 and AF_INET6 |
| 3059 | * - allow all changes if no CHECKS are configured |
| 3060 | * - if CHECK is configured: |
| 3061 | * - if switch to port map (SRV_F_MAPPORTS), ensure health check have their own ports |
| 3062 | * - applies required changes to both ADDR and PORT if both 'required' and 'allowed' |
| 3063 | * conditions are met |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 3064 | * |
| 3065 | * Must be called with the server lock held. |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3066 | */ |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 3067 | const char *srv_update_addr_port(struct server *s, const char *addr, const char *port, char *updater) |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3068 | { |
| 3069 | struct sockaddr_storage sa; |
| 3070 | int ret, port_change_required; |
| 3071 | char current_addr[INET6_ADDRSTRLEN]; |
David Carlier | 327298c | 2016-11-20 10:42:38 +0000 | [diff] [blame] | 3072 | uint16_t current_port, new_port; |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 3073 | struct buffer *msg; |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 3074 | int changed = 0; |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3075 | |
| 3076 | msg = get_trash_chunk(); |
| 3077 | chunk_reset(msg); |
| 3078 | |
| 3079 | if (addr) { |
| 3080 | memset(&sa, 0, sizeof(struct sockaddr_storage)); |
| 3081 | if (str2ip2(addr, &sa, 0) == NULL) { |
| 3082 | chunk_printf(msg, "Invalid addr '%s'", addr); |
| 3083 | goto out; |
| 3084 | } |
| 3085 | |
| 3086 | /* changes are allowed on AF_INET* families only */ |
| 3087 | if ((sa.ss_family != AF_INET) && (sa.ss_family != AF_INET6)) { |
| 3088 | chunk_printf(msg, "Update to families other than AF_INET and AF_INET6 supported only through configuration file"); |
| 3089 | goto out; |
| 3090 | } |
| 3091 | |
| 3092 | /* collecting data currently setup */ |
| 3093 | memset(current_addr, '\0', sizeof(current_addr)); |
| 3094 | ret = addr_to_str(&s->addr, current_addr, sizeof(current_addr)); |
| 3095 | /* changes are allowed on AF_INET* families only */ |
| 3096 | if ((ret != AF_INET) && (ret != AF_INET6)) { |
| 3097 | chunk_printf(msg, "Update for the current server address family is only supported through configuration file"); |
| 3098 | goto out; |
| 3099 | } |
| 3100 | |
| 3101 | /* applying ADDR changes if required and allowed |
| 3102 | * ipcmp returns 0 when both ADDR are the same |
| 3103 | */ |
| 3104 | if (ipcmp(&s->addr, &sa) == 0) { |
| 3105 | chunk_appendf(msg, "no need to change the addr"); |
| 3106 | goto port; |
| 3107 | } |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3108 | ipcpy(&sa, &s->addr); |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 3109 | changed = 1; |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3110 | |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3111 | /* update report for caller */ |
| 3112 | chunk_printf(msg, "IP changed from '%s' to '%s'", current_addr, addr); |
| 3113 | } |
| 3114 | |
| 3115 | port: |
| 3116 | if (port) { |
| 3117 | char sign = '\0'; |
| 3118 | char *endptr; |
| 3119 | |
| 3120 | if (addr) |
| 3121 | chunk_appendf(msg, ", "); |
| 3122 | |
| 3123 | /* collecting data currently setup */ |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 3124 | current_port = s->svc_port; |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3125 | |
| 3126 | /* check if PORT change is required */ |
| 3127 | port_change_required = 0; |
| 3128 | |
| 3129 | sign = *port; |
Ryabin Sergey | 77ee752 | 2017-01-11 19:39:55 +0400 | [diff] [blame] | 3130 | errno = 0; |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3131 | new_port = strtol(port, &endptr, 10); |
| 3132 | if ((errno != 0) || (port == endptr)) { |
| 3133 | chunk_appendf(msg, "problem converting port '%s' to an int", port); |
| 3134 | goto out; |
| 3135 | } |
| 3136 | |
| 3137 | /* check if caller triggers a port mapped or offset */ |
| 3138 | if (sign == '-' || (sign == '+')) { |
| 3139 | /* check if server currently uses port map */ |
| 3140 | if (!(s->flags & SRV_F_MAPPORTS)) { |
| 3141 | /* switch from fixed port to port map mandatorily triggers |
| 3142 | * a port change */ |
| 3143 | port_change_required = 1; |
| 3144 | /* check is configured |
| 3145 | * we're switching from a fixed port to a SRV_F_MAPPORTS (mapped) port |
| 3146 | * prevent PORT change if check doesn't have it's dedicated port while switching |
| 3147 | * to port mapping */ |
William Dauchy | 69f118d | 2021-02-03 22:30:07 +0100 | [diff] [blame] | 3148 | if (!s->check.port) { |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3149 | chunk_appendf(msg, "can't change <port> to port map because it is incompatible with current health check port configuration (use 'port' statement from the 'server' directive."); |
| 3150 | goto out; |
| 3151 | } |
| 3152 | } |
| 3153 | /* we're already using port maps */ |
| 3154 | else { |
| 3155 | port_change_required = current_port != new_port; |
| 3156 | } |
| 3157 | } |
| 3158 | /* fixed port */ |
| 3159 | else { |
| 3160 | port_change_required = current_port != new_port; |
| 3161 | } |
| 3162 | |
| 3163 | /* applying PORT changes if required and update response message */ |
| 3164 | if (port_change_required) { |
| 3165 | /* apply new port */ |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 3166 | s->svc_port = new_port; |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 3167 | changed = 1; |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3168 | |
| 3169 | /* prepare message */ |
| 3170 | chunk_appendf(msg, "port changed from '"); |
| 3171 | if (s->flags & SRV_F_MAPPORTS) |
| 3172 | chunk_appendf(msg, "+"); |
| 3173 | chunk_appendf(msg, "%d' to '", current_port); |
| 3174 | |
| 3175 | if (sign == '-') { |
| 3176 | s->flags |= SRV_F_MAPPORTS; |
| 3177 | chunk_appendf(msg, "%c", sign); |
| 3178 | /* just use for result output */ |
| 3179 | new_port = -new_port; |
| 3180 | } |
| 3181 | else if (sign == '+') { |
| 3182 | s->flags |= SRV_F_MAPPORTS; |
| 3183 | chunk_appendf(msg, "%c", sign); |
| 3184 | } |
| 3185 | else { |
| 3186 | s->flags &= ~SRV_F_MAPPORTS; |
| 3187 | } |
| 3188 | |
| 3189 | chunk_appendf(msg, "%d'", new_port); |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3190 | } |
| 3191 | else { |
| 3192 | chunk_appendf(msg, "no need to change the port"); |
| 3193 | } |
| 3194 | } |
| 3195 | |
| 3196 | out: |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 3197 | if (changed) { |
| 3198 | /* force connection cleanup on the given server */ |
| 3199 | srv_cleanup_connections(s); |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 3200 | srv_set_dyncookie(s); |
Thayne McCombs | 92149f9 | 2020-11-20 01:28:26 -0700 | [diff] [blame] | 3201 | srv_set_addr_desc(s); |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 3202 | } |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3203 | if (updater) |
| 3204 | chunk_appendf(msg, " by '%s'", updater); |
| 3205 | chunk_appendf(msg, "\n"); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 3206 | return msg->area; |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3207 | } |
| 3208 | |
Christopher Faulet | 5efdef2 | 2021-03-11 18:03:21 +0100 | [diff] [blame] | 3209 | /* |
| 3210 | * update server status based on result of SRV resolution |
| 3211 | * returns: |
| 3212 | * 0 if server status is updated |
| 3213 | * 1 if server status has not changed |
| 3214 | * |
| 3215 | * Must be called with the server lock held. |
| 3216 | */ |
| 3217 | int srvrq_update_srv_status(struct server *s, int has_no_ip) |
| 3218 | { |
| 3219 | if (!s->srvrq) |
| 3220 | return 1; |
| 3221 | |
| 3222 | /* since this server has an IP, it can go back in production */ |
| 3223 | if (has_no_ip == 0) { |
| 3224 | srv_clr_admin_flag(s, SRV_ADMF_RMAINT); |
| 3225 | return 1; |
| 3226 | } |
| 3227 | |
| 3228 | if (s->next_admin & SRV_ADMF_RMAINT) |
| 3229 | return 1; |
| 3230 | |
| 3231 | srv_set_admin_flag(s, SRV_ADMF_RMAINT, "entry removed from SRV record"); |
| 3232 | return 0; |
| 3233 | } |
Baptiste Assmann | d458adc | 2016-08-02 08:18:55 +0200 | [diff] [blame] | 3234 | |
| 3235 | /* |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3236 | * update server status based on result of name resolution |
| 3237 | * returns: |
| 3238 | * 0 if server status is updated |
| 3239 | * 1 if server status has not changed |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 3240 | * |
| 3241 | * Must be called with the server lock held. |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3242 | */ |
Olivier Houchard | a8c6db8 | 2017-07-06 18:46:47 +0200 | [diff] [blame] | 3243 | int snr_update_srv_status(struct server *s, int has_no_ip) |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3244 | { |
Emeric Brun | 750fe79 | 2020-12-23 16:51:12 +0100 | [diff] [blame] | 3245 | struct resolvers *resolvers = s->resolvers; |
Christopher Faulet | d83a6df | 2021-03-12 10:23:05 +0100 | [diff] [blame] | 3246 | struct resolv_resolution *resolution = (s->resolv_requester ? s->resolv_requester->resolution : NULL); |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3247 | int exp; |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3248 | |
Jerome Magnin | 012261a | 2020-07-28 13:38:22 +0200 | [diff] [blame] | 3249 | /* If resolution is NULL we're dealing with SRV records Additional records */ |
Christopher Faulet | 5efdef2 | 2021-03-11 18:03:21 +0100 | [diff] [blame] | 3250 | if (resolution == NULL) |
| 3251 | return srvrq_update_srv_status(s, has_no_ip); |
Jerome Magnin | 012261a | 2020-07-28 13:38:22 +0200 | [diff] [blame] | 3252 | |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3253 | switch (resolution->status) { |
| 3254 | case RSLV_STATUS_NONE: |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3255 | /* status when HAProxy has just (re)started. |
| 3256 | * Nothing to do, since the task is already automatically started */ |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3257 | break; |
| 3258 | |
Baptiste Assmann | 3b9fe9f | 2016-11-02 22:58:18 +0100 | [diff] [blame] | 3259 | case RSLV_STATUS_VALID: |
| 3260 | /* |
| 3261 | * resume health checks |
| 3262 | * server will be turned back on if health check is safe |
| 3263 | */ |
Olivier Houchard | a8c6db8 | 2017-07-06 18:46:47 +0200 | [diff] [blame] | 3264 | if (has_no_ip) { |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 3265 | if (s->next_admin & SRV_ADMF_RMAINT) |
Olivier Houchard | a8c6db8 | 2017-07-06 18:46:47 +0200 | [diff] [blame] | 3266 | return 1; |
| 3267 | srv_set_admin_flag(s, SRV_ADMF_RMAINT, |
| 3268 | "No IP for server "); |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3269 | return 0; |
Olivier Houchard | a8c6db8 | 2017-07-06 18:46:47 +0200 | [diff] [blame] | 3270 | } |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3271 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 3272 | if (!(s->next_admin & SRV_ADMF_RMAINT)) |
Baptiste Assmann | 3b9fe9f | 2016-11-02 22:58:18 +0100 | [diff] [blame] | 3273 | return 1; |
| 3274 | srv_clr_admin_flag(s, SRV_ADMF_RMAINT); |
| 3275 | chunk_printf(&trash, "Server %s/%s administratively READY thanks to valid DNS answer", |
| 3276 | s->proxy->id, s->id); |
| 3277 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 3278 | ha_warning("%s.\n", trash.area); |
| 3279 | send_log(s->proxy, LOG_NOTICE, "%s.\n", trash.area); |
Baptiste Assmann | 3b9fe9f | 2016-11-02 22:58:18 +0100 | [diff] [blame] | 3280 | return 0; |
| 3281 | |
| 3282 | case RSLV_STATUS_NX: |
| 3283 | /* stop server if resolution is NX for a long enough period */ |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3284 | exp = tick_add(resolution->last_valid, resolvers->hold.nx); |
| 3285 | if (!tick_is_expired(exp, now_ms)) |
| 3286 | break; |
| 3287 | |
| 3288 | if (s->next_admin & SRV_ADMF_RMAINT) |
| 3289 | return 1; |
| 3290 | srv_set_admin_flag(s, SRV_ADMF_RMAINT, "DNS NX status"); |
| 3291 | return 0; |
Baptiste Assmann | 3b9fe9f | 2016-11-02 22:58:18 +0100 | [diff] [blame] | 3292 | |
| 3293 | case RSLV_STATUS_TIMEOUT: |
| 3294 | /* stop server if resolution is TIMEOUT for a long enough period */ |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3295 | exp = tick_add(resolution->last_valid, resolvers->hold.timeout); |
| 3296 | if (!tick_is_expired(exp, now_ms)) |
| 3297 | break; |
| 3298 | |
| 3299 | if (s->next_admin & SRV_ADMF_RMAINT) |
| 3300 | return 1; |
| 3301 | srv_set_admin_flag(s, SRV_ADMF_RMAINT, "DNS timeout status"); |
| 3302 | return 0; |
Baptiste Assmann | 3b9fe9f | 2016-11-02 22:58:18 +0100 | [diff] [blame] | 3303 | |
| 3304 | case RSLV_STATUS_REFUSED: |
| 3305 | /* stop server if resolution is REFUSED for a long enough period */ |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3306 | exp = tick_add(resolution->last_valid, resolvers->hold.refused); |
| 3307 | if (!tick_is_expired(exp, now_ms)) |
| 3308 | break; |
| 3309 | |
| 3310 | if (s->next_admin & SRV_ADMF_RMAINT) |
| 3311 | return 1; |
| 3312 | srv_set_admin_flag(s, SRV_ADMF_RMAINT, "DNS refused status"); |
| 3313 | return 0; |
Baptiste Assmann | 3b9fe9f | 2016-11-02 22:58:18 +0100 | [diff] [blame] | 3314 | |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3315 | default: |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3316 | /* stop server if resolution failed for a long enough period */ |
| 3317 | exp = tick_add(resolution->last_valid, resolvers->hold.other); |
| 3318 | if (!tick_is_expired(exp, now_ms)) |
| 3319 | break; |
| 3320 | |
| 3321 | if (s->next_admin & SRV_ADMF_RMAINT) |
| 3322 | return 1; |
| 3323 | srv_set_admin_flag(s, SRV_ADMF_RMAINT, "unspecified DNS error"); |
| 3324 | return 0; |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3325 | } |
| 3326 | |
| 3327 | return 1; |
| 3328 | } |
| 3329 | |
| 3330 | /* |
| 3331 | * Server Name Resolution valid response callback |
| 3332 | * It expects: |
| 3333 | * - <nameserver>: the name server which answered the valid response |
| 3334 | * - <response>: buffer containing a valid DNS response |
| 3335 | * - <response_len>: size of <response> |
| 3336 | * It performs the following actions: |
| 3337 | * - ignore response if current ip found and server family not met |
| 3338 | * - update with first new ip found if family is met and current IP is not found |
| 3339 | * returns: |
| 3340 | * 0 on error |
| 3341 | * 1 when no error or safe ignore |
Olivier Houchard | 2838107 | 2017-11-06 17:30:28 +0100 | [diff] [blame] | 3342 | * |
| 3343 | * Must be called with server lock held |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3344 | */ |
Emeric Brun | 08622d3 | 2020-12-23 17:41:43 +0100 | [diff] [blame] | 3345 | int snr_resolution_cb(struct resolv_requester *requester, struct dns_counters *counters) |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3346 | { |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3347 | struct server *s = NULL; |
Emeric Brun | 08622d3 | 2020-12-23 17:41:43 +0100 | [diff] [blame] | 3348 | struct resolv_resolution *resolution = NULL; |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3349 | void *serverip, *firstip; |
| 3350 | short server_sin_family, firstip_sin_family; |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3351 | int ret; |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 3352 | struct buffer *chk = get_trash_chunk(); |
Olivier Houchard | a8c6db8 | 2017-07-06 18:46:47 +0200 | [diff] [blame] | 3353 | int has_no_ip = 0; |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3354 | |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3355 | s = objt_server(requester->owner); |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3356 | if (!s) |
| 3357 | return 1; |
| 3358 | |
Christopher Faulet | 49531e8 | 2021-03-10 15:07:27 +0100 | [diff] [blame] | 3359 | if (s->srvrq) { |
Emeric Brun | 0c4a8a3 | 2021-06-11 10:48:45 +0200 | [diff] [blame] | 3360 | /* If DNS resolution is disabled ignore it. |
| 3361 | * This is the case if the server was associated to |
| 3362 | * a SRV record and this record is now expired. |
Christopher Faulet | 49531e8 | 2021-03-10 15:07:27 +0100 | [diff] [blame] | 3363 | */ |
Emeric Brun | 0c4a8a3 | 2021-06-11 10:48:45 +0200 | [diff] [blame] | 3364 | if (s->flags & SRV_F_NO_RESOLUTION) |
Christopher Faulet | 49531e8 | 2021-03-10 15:07:27 +0100 | [diff] [blame] | 3365 | return 1; |
| 3366 | } |
| 3367 | |
Christopher Faulet | d83a6df | 2021-03-12 10:23:05 +0100 | [diff] [blame] | 3368 | resolution = (s->resolv_requester ? s->resolv_requester->resolution : NULL); |
Christopher Faulet | 49531e8 | 2021-03-10 15:07:27 +0100 | [diff] [blame] | 3369 | if (!resolution) |
| 3370 | return 1; |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3371 | |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3372 | /* initializing variables */ |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3373 | firstip = NULL; /* pointer to the first valid response found */ |
| 3374 | /* it will be used as the new IP if a change is required */ |
| 3375 | firstip_sin_family = AF_UNSPEC; |
| 3376 | serverip = NULL; /* current server IP address */ |
| 3377 | |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3378 | /* initializing server IP pointer */ |
| 3379 | server_sin_family = s->addr.ss_family; |
| 3380 | switch (server_sin_family) { |
| 3381 | case AF_INET: |
| 3382 | serverip = &((struct sockaddr_in *)&s->addr)->sin_addr.s_addr; |
| 3383 | break; |
| 3384 | |
| 3385 | case AF_INET6: |
| 3386 | serverip = &((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr; |
| 3387 | break; |
| 3388 | |
Willy Tarreau | 3acfcd1 | 2017-01-06 19:18:32 +0100 | [diff] [blame] | 3389 | case AF_UNSPEC: |
| 3390 | break; |
| 3391 | |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3392 | default: |
| 3393 | goto invalid; |
| 3394 | } |
| 3395 | |
Emeric Brun | d30e9a1 | 2020-12-23 18:49:16 +0100 | [diff] [blame] | 3396 | ret = resolv_get_ip_from_response(&resolution->response, &s->resolv_opts, |
| 3397 | serverip, server_sin_family, &firstip, |
| 3398 | &firstip_sin_family, s); |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3399 | |
| 3400 | switch (ret) { |
Emeric Brun | 456de77 | 2020-12-23 18:17:31 +0100 | [diff] [blame] | 3401 | case RSLV_UPD_NO: |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3402 | goto update_status; |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3403 | |
Emeric Brun | 456de77 | 2020-12-23 18:17:31 +0100 | [diff] [blame] | 3404 | case RSLV_UPD_SRVIP_NOT_FOUND: |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3405 | goto save_ip; |
| 3406 | |
Emeric Brun | 456de77 | 2020-12-23 18:17:31 +0100 | [diff] [blame] | 3407 | case RSLV_UPD_CNAME: |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3408 | goto invalid; |
| 3409 | |
Emeric Brun | 456de77 | 2020-12-23 18:17:31 +0100 | [diff] [blame] | 3410 | case RSLV_UPD_NO_IP_FOUND: |
Olivier Houchard | a8c6db8 | 2017-07-06 18:46:47 +0200 | [diff] [blame] | 3411 | has_no_ip = 1; |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3412 | goto update_status; |
Baptiste Assmann | 0453a1d | 2015-09-09 00:51:08 +0200 | [diff] [blame] | 3413 | |
Emeric Brun | 456de77 | 2020-12-23 18:17:31 +0100 | [diff] [blame] | 3414 | case RSLV_UPD_NAME_ERROR: |
Baptiste Assmann | fad0318 | 2015-10-28 02:03:32 +0100 | [diff] [blame] | 3415 | /* update resolution status to OTHER error type */ |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3416 | resolution->status = RSLV_STATUS_OTHER; |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3417 | goto update_status; |
Baptiste Assmann | fad0318 | 2015-10-28 02:03:32 +0100 | [diff] [blame] | 3418 | |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3419 | default: |
| 3420 | goto invalid; |
| 3421 | |
| 3422 | } |
| 3423 | |
| 3424 | save_ip: |
Emeric Brun | 50c870e | 2021-01-04 10:40:46 +0100 | [diff] [blame] | 3425 | if (counters) { |
| 3426 | counters->update++; |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3427 | /* save the first ip we found */ |
Emeric Brun | 50c870e | 2021-01-04 10:40:46 +0100 | [diff] [blame] | 3428 | chunk_printf(chk, "%s/%s", counters->pid, counters->id); |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3429 | } |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3430 | else |
| 3431 | chunk_printf(chk, "DNS cache"); |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 3432 | srv_update_addr(s, firstip, firstip_sin_family, (char *) chk->area); |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3433 | |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3434 | update_status: |
Christopher Faulet | 49531e8 | 2021-03-10 15:07:27 +0100 | [diff] [blame] | 3435 | |
Olivier Houchard | a8c6db8 | 2017-07-06 18:46:47 +0200 | [diff] [blame] | 3436 | snr_update_srv_status(s, has_no_ip); |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3437 | return 1; |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3438 | |
| 3439 | invalid: |
Emeric Brun | 50c870e | 2021-01-04 10:40:46 +0100 | [diff] [blame] | 3440 | if (counters) { |
| 3441 | counters->invalid++; |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3442 | goto update_status; |
Christopher Faulet | 3bbd65b | 2017-09-15 11:55:45 +0200 | [diff] [blame] | 3443 | } |
Olivier Houchard | a8c6db8 | 2017-07-06 18:46:47 +0200 | [diff] [blame] | 3444 | snr_update_srv_status(s, has_no_ip); |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3445 | return 0; |
| 3446 | } |
| 3447 | |
| 3448 | /* |
Baptiste Assmann | b4badf7 | 2020-11-19 22:38:33 +0100 | [diff] [blame] | 3449 | * SRV record error management callback |
| 3450 | * returns: |
Emeric Brun | 43839d0 | 2021-06-10 15:25:25 +0200 | [diff] [blame] | 3451 | * 0 if we can trash answser items. |
| 3452 | * 1 when safely ignored and we must kept answer items |
Baptiste Assmann | b4badf7 | 2020-11-19 22:38:33 +0100 | [diff] [blame] | 3453 | * |
| 3454 | * Grabs the server's lock. |
| 3455 | */ |
| 3456 | int srvrq_resolution_error_cb(struct resolv_requester *requester, int error_code) |
| 3457 | { |
Baptiste Assmann | b4badf7 | 2020-11-19 22:38:33 +0100 | [diff] [blame] | 3458 | struct resolv_srvrq *srvrq; |
| 3459 | struct resolv_resolution *res; |
| 3460 | struct resolvers *resolvers; |
| 3461 | int exp; |
| 3462 | |
| 3463 | /* SRV records */ |
| 3464 | srvrq = objt_resolv_srvrq(requester->owner); |
| 3465 | if (!srvrq) |
Emeric Brun | 43839d0 | 2021-06-10 15:25:25 +0200 | [diff] [blame] | 3466 | return 0; |
Baptiste Assmann | b4badf7 | 2020-11-19 22:38:33 +0100 | [diff] [blame] | 3467 | |
| 3468 | resolvers = srvrq->resolvers; |
| 3469 | res = requester->resolution; |
| 3470 | |
| 3471 | switch (res->status) { |
| 3472 | |
| 3473 | case RSLV_STATUS_NX: |
| 3474 | /* stop server if resolution is NX for a long enough period */ |
| 3475 | exp = tick_add(res->last_valid, resolvers->hold.nx); |
| 3476 | if (!tick_is_expired(exp, now_ms)) |
| 3477 | return 1; |
| 3478 | break; |
| 3479 | |
| 3480 | case RSLV_STATUS_TIMEOUT: |
| 3481 | /* stop server if resolution is TIMEOUT for a long enough period */ |
| 3482 | exp = tick_add(res->last_valid, resolvers->hold.timeout); |
| 3483 | if (!tick_is_expired(exp, now_ms)) |
| 3484 | return 1; |
| 3485 | break; |
| 3486 | |
| 3487 | case RSLV_STATUS_REFUSED: |
| 3488 | /* stop server if resolution is REFUSED for a long enough period */ |
| 3489 | exp = tick_add(res->last_valid, resolvers->hold.refused); |
| 3490 | if (!tick_is_expired(exp, now_ms)) |
| 3491 | return 1; |
| 3492 | break; |
| 3493 | |
| 3494 | default: |
| 3495 | /* stop server if resolution failed for a long enough period */ |
| 3496 | exp = tick_add(res->last_valid, resolvers->hold.other); |
| 3497 | if (!tick_is_expired(exp, now_ms)) |
| 3498 | return 1; |
| 3499 | } |
| 3500 | |
Emeric Brun | 0c4a8a3 | 2021-06-11 10:48:45 +0200 | [diff] [blame] | 3501 | /* Remove any associated server ref */ |
| 3502 | resolv_detach_from_resolution_answer_items(res, requester, 1); |
Baptiste Assmann | b4badf7 | 2020-11-19 22:38:33 +0100 | [diff] [blame] | 3503 | |
Emeric Brun | 43839d0 | 2021-06-10 15:25:25 +0200 | [diff] [blame] | 3504 | return 0; |
Baptiste Assmann | b4badf7 | 2020-11-19 22:38:33 +0100 | [diff] [blame] | 3505 | } |
| 3506 | |
| 3507 | /* |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3508 | * Server Name Resolution error management callback |
| 3509 | * returns: |
Emeric Brun | 43839d0 | 2021-06-10 15:25:25 +0200 | [diff] [blame] | 3510 | * 0 if we can trash answser items. |
| 3511 | * 1 when safely ignored and we must kept answer items |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 3512 | * |
| 3513 | * Grabs the server's lock. |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3514 | */ |
Emeric Brun | 08622d3 | 2020-12-23 17:41:43 +0100 | [diff] [blame] | 3515 | int snr_resolution_error_cb(struct resolv_requester *requester, int error_code) |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3516 | { |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3517 | struct server *s; |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3518 | |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3519 | s = objt_server(requester->owner); |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3520 | if (!s) |
Emeric Brun | 43839d0 | 2021-06-10 15:25:25 +0200 | [diff] [blame] | 3521 | return 0; |
| 3522 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3523 | HA_SPIN_LOCK(SERVER_LOCK, &s->lock); |
Emeric Brun | 43839d0 | 2021-06-10 15:25:25 +0200 | [diff] [blame] | 3524 | if (!snr_update_srv_status(s, 1)) { |
Christopher Faulet | 5130c21 | 2021-03-10 20:31:40 +0100 | [diff] [blame] | 3525 | memset(&s->addr, 0, sizeof(s->addr)); |
Emeric Brun | 43839d0 | 2021-06-10 15:25:25 +0200 | [diff] [blame] | 3526 | HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock); |
Emeric Brun | 0c4a8a3 | 2021-06-11 10:48:45 +0200 | [diff] [blame] | 3527 | resolv_detach_from_resolution_answer_items(requester->resolution, requester, 1); |
Emeric Brun | 43839d0 | 2021-06-10 15:25:25 +0200 | [diff] [blame] | 3528 | return 0; |
| 3529 | } |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3530 | HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock); |
Emeric Brun | 43839d0 | 2021-06-10 15:25:25 +0200 | [diff] [blame] | 3531 | |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 3532 | return 1; |
| 3533 | } |
| 3534 | |
Baptiste Assmann | fb7091e | 2017-05-03 15:43:12 +0200 | [diff] [blame] | 3535 | /* |
| 3536 | * Function to check if <ip> is already affected to a server in the backend |
Olivier Houchard | a8c6db8 | 2017-07-06 18:46:47 +0200 | [diff] [blame] | 3537 | * which owns <srv> and is up. |
Baptiste Assmann | fb7091e | 2017-05-03 15:43:12 +0200 | [diff] [blame] | 3538 | * It returns a pointer to the first server found or NULL if <ip> is not yet |
| 3539 | * assigned. |
Olivier Houchard | 2838107 | 2017-11-06 17:30:28 +0100 | [diff] [blame] | 3540 | * |
| 3541 | * Must be called with server lock held |
Baptiste Assmann | fb7091e | 2017-05-03 15:43:12 +0200 | [diff] [blame] | 3542 | */ |
| 3543 | struct server *snr_check_ip_callback(struct server *srv, void *ip, unsigned char *ip_family) |
| 3544 | { |
| 3545 | struct server *tmpsrv; |
| 3546 | struct proxy *be; |
| 3547 | |
| 3548 | if (!srv) |
| 3549 | return NULL; |
| 3550 | |
| 3551 | be = srv->proxy; |
| 3552 | for (tmpsrv = be->srv; tmpsrv; tmpsrv = tmpsrv->next) { |
Emeric Brun | e9fd6b5 | 2017-11-02 17:20:39 +0100 | [diff] [blame] | 3553 | /* we found the current server is the same, ignore it */ |
| 3554 | if (srv == tmpsrv) |
| 3555 | continue; |
| 3556 | |
Baptiste Assmann | fb7091e | 2017-05-03 15:43:12 +0200 | [diff] [blame] | 3557 | /* We want to compare the IP in the record with the IP of the servers in the |
| 3558 | * same backend, only if: |
| 3559 | * * DNS resolution is enabled on the server |
| 3560 | * * the hostname used for the resolution by our server is the same than the |
| 3561 | * one used for the server found in the backend |
| 3562 | * * the server found in the backend is not our current server |
| 3563 | */ |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3564 | HA_SPIN_LOCK(SERVER_LOCK, &tmpsrv->lock); |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3565 | if ((tmpsrv->hostname_dn == NULL) || |
| 3566 | (srv->hostname_dn_len != tmpsrv->hostname_dn_len) || |
Christopher Faulet | 59b2925 | 2021-03-16 11:21:04 +0100 | [diff] [blame] | 3567 | (strcasecmp(srv->hostname_dn, tmpsrv->hostname_dn) != 0) || |
Emeric Brun | e9fd6b5 | 2017-11-02 17:20:39 +0100 | [diff] [blame] | 3568 | (srv->puid == tmpsrv->puid)) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3569 | HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock); |
Baptiste Assmann | fb7091e | 2017-05-03 15:43:12 +0200 | [diff] [blame] | 3570 | continue; |
Emeric Brun | e9fd6b5 | 2017-11-02 17:20:39 +0100 | [diff] [blame] | 3571 | } |
Baptiste Assmann | fb7091e | 2017-05-03 15:43:12 +0200 | [diff] [blame] | 3572 | |
Olivier Houchard | a8c6db8 | 2017-07-06 18:46:47 +0200 | [diff] [blame] | 3573 | /* If the server has been taken down, don't consider it */ |
Emeric Brun | e9fd6b5 | 2017-11-02 17:20:39 +0100 | [diff] [blame] | 3574 | if (tmpsrv->next_admin & SRV_ADMF_RMAINT) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3575 | HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock); |
Olivier Houchard | a8c6db8 | 2017-07-06 18:46:47 +0200 | [diff] [blame] | 3576 | continue; |
Emeric Brun | e9fd6b5 | 2017-11-02 17:20:39 +0100 | [diff] [blame] | 3577 | } |
Olivier Houchard | a8c6db8 | 2017-07-06 18:46:47 +0200 | [diff] [blame] | 3578 | |
Baptiste Assmann | fb7091e | 2017-05-03 15:43:12 +0200 | [diff] [blame] | 3579 | /* At this point, we have 2 different servers using the same DNS hostname |
| 3580 | * for their respective resolution. |
| 3581 | */ |
| 3582 | if (*ip_family == tmpsrv->addr.ss_family && |
| 3583 | ((tmpsrv->addr.ss_family == AF_INET && |
| 3584 | memcmp(ip, &((struct sockaddr_in *)&tmpsrv->addr)->sin_addr, 4) == 0) || |
| 3585 | (tmpsrv->addr.ss_family == AF_INET6 && |
| 3586 | memcmp(ip, &((struct sockaddr_in6 *)&tmpsrv->addr)->sin6_addr, 16) == 0))) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3587 | HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock); |
Baptiste Assmann | fb7091e | 2017-05-03 15:43:12 +0200 | [diff] [blame] | 3588 | return tmpsrv; |
| 3589 | } |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3590 | HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock); |
Baptiste Assmann | fb7091e | 2017-05-03 15:43:12 +0200 | [diff] [blame] | 3591 | } |
| 3592 | |
Emeric Brun | e9fd6b5 | 2017-11-02 17:20:39 +0100 | [diff] [blame] | 3593 | |
Baptiste Assmann | fb7091e | 2017-05-03 15:43:12 +0200 | [diff] [blame] | 3594 | return NULL; |
| 3595 | } |
| 3596 | |
Baptiste Assmann | 83cbaa5 | 2016-11-02 15:34:05 +0100 | [diff] [blame] | 3597 | /* Sets the server's address (srv->addr) from srv->hostname using the libc's |
| 3598 | * resolver. This is suited for initial address configuration. Returns 0 on |
| 3599 | * success otherwise a non-zero error code. In case of error, *err_code, if |
| 3600 | * not NULL, is filled up. |
| 3601 | */ |
| 3602 | int srv_set_addr_via_libc(struct server *srv, int *err_code) |
| 3603 | { |
| 3604 | if (str2ip2(srv->hostname, &srv->addr, 1) == NULL) { |
Baptiste Assmann | 83cbaa5 | 2016-11-02 15:34:05 +0100 | [diff] [blame] | 3605 | if (err_code) |
Willy Tarreau | 465b6e5 | 2016-11-07 19:19:22 +0100 | [diff] [blame] | 3606 | *err_code |= ERR_WARN; |
Baptiste Assmann | 83cbaa5 | 2016-11-02 15:34:05 +0100 | [diff] [blame] | 3607 | return 1; |
| 3608 | } |
| 3609 | return 0; |
| 3610 | } |
| 3611 | |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 3612 | /* Set the server's FDQN (->hostname) from <hostname>. |
| 3613 | * Returns -1 if failed, 0 if not. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 3614 | * |
| 3615 | * Must be called with the server lock held. |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 3616 | */ |
Emeric Brun | 08622d3 | 2020-12-23 17:41:43 +0100 | [diff] [blame] | 3617 | int srv_set_fqdn(struct server *srv, const char *hostname, int resolv_locked) |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 3618 | { |
Emeric Brun | 08622d3 | 2020-12-23 17:41:43 +0100 | [diff] [blame] | 3619 | struct resolv_resolution *resolution; |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3620 | char *hostname_dn; |
| 3621 | int hostname_len, hostname_dn_len; |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3622 | |
Frédéric Lécaille | 5afb3cf | 2018-08-21 15:04:23 +0200 | [diff] [blame] | 3623 | /* Note that the server lock is already held. */ |
| 3624 | if (!srv->resolvers) |
| 3625 | return -1; |
| 3626 | |
Emeric Brun | 08622d3 | 2020-12-23 17:41:43 +0100 | [diff] [blame] | 3627 | if (!resolv_locked) |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3628 | HA_SPIN_LOCK(DNS_LOCK, &srv->resolvers->lock); |
Christopher Faulet | d83a6df | 2021-03-12 10:23:05 +0100 | [diff] [blame] | 3629 | /* run time DNS/SRV resolution was not active for this server |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3630 | * and we can't enable it at run time for now. |
| 3631 | */ |
Christopher Faulet | d83a6df | 2021-03-12 10:23:05 +0100 | [diff] [blame] | 3632 | if (!srv->resolv_requester && !srv->srvrq) |
Christopher Faulet | b2812a6 | 2017-10-04 16:17:58 +0200 | [diff] [blame] | 3633 | goto err; |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3634 | |
| 3635 | chunk_reset(&trash); |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3636 | hostname_len = strlen(hostname); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 3637 | hostname_dn = trash.area; |
Emeric Brun | d30e9a1 | 2020-12-23 18:49:16 +0100 | [diff] [blame] | 3638 | hostname_dn_len = resolv_str_to_dn_label(hostname, hostname_len + 1, |
| 3639 | hostname_dn, trash.size); |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3640 | if (hostname_dn_len == -1) |
Christopher Faulet | b2812a6 | 2017-10-04 16:17:58 +0200 | [diff] [blame] | 3641 | goto err; |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3642 | |
Christopher Faulet | d83a6df | 2021-03-12 10:23:05 +0100 | [diff] [blame] | 3643 | resolution = (srv->resolv_requester ? srv->resolv_requester->resolution : NULL); |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3644 | if (resolution && |
| 3645 | resolution->hostname_dn && |
Christopher Faulet | 59b2925 | 2021-03-16 11:21:04 +0100 | [diff] [blame] | 3646 | resolution->hostname_dn_len == hostname_dn_len && |
| 3647 | strcasecmp(resolution->hostname_dn, hostname_dn) == 0) |
Christopher Faulet | b2812a6 | 2017-10-04 16:17:58 +0200 | [diff] [blame] | 3648 | goto end; |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3649 | |
Christopher Faulet | 0efc099 | 2021-03-11 18:09:53 +0100 | [diff] [blame] | 3650 | resolv_unlink_resolution(srv->resolv_requester, 0); |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3651 | |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3652 | free(srv->hostname); |
| 3653 | free(srv->hostname_dn); |
Christopher Faulet | 67957bd | 2017-09-27 11:00:59 +0200 | [diff] [blame] | 3654 | srv->hostname = strdup(hostname); |
| 3655 | srv->hostname_dn = strdup(hostname_dn); |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3656 | srv->hostname_dn_len = hostname_dn_len; |
| 3657 | if (!srv->hostname || !srv->hostname_dn) |
Christopher Faulet | b2812a6 | 2017-10-04 16:17:58 +0200 | [diff] [blame] | 3658 | goto err; |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3659 | |
Baptiste Assmann | 13a9232 | 2019-06-07 09:40:55 +0200 | [diff] [blame] | 3660 | if (srv->flags & SRV_F_NO_RESOLUTION) |
| 3661 | goto end; |
| 3662 | |
Emeric Brun | d30e9a1 | 2020-12-23 18:49:16 +0100 | [diff] [blame] | 3663 | if (resolv_link_resolution(srv, OBJ_TYPE_SERVER, 1) == -1) |
Christopher Faulet | b2812a6 | 2017-10-04 16:17:58 +0200 | [diff] [blame] | 3664 | goto err; |
| 3665 | |
| 3666 | end: |
Emeric Brun | 08622d3 | 2020-12-23 17:41:43 +0100 | [diff] [blame] | 3667 | if (!resolv_locked) |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3668 | HA_SPIN_UNLOCK(DNS_LOCK, &srv->resolvers->lock); |
Baptiste Assmann | 201c07f | 2017-05-22 15:17:15 +0200 | [diff] [blame] | 3669 | return 0; |
Christopher Faulet | b2812a6 | 2017-10-04 16:17:58 +0200 | [diff] [blame] | 3670 | |
| 3671 | err: |
Emeric Brun | 08622d3 | 2020-12-23 17:41:43 +0100 | [diff] [blame] | 3672 | if (!resolv_locked) |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3673 | HA_SPIN_UNLOCK(DNS_LOCK, &srv->resolvers->lock); |
Christopher Faulet | b2812a6 | 2017-10-04 16:17:58 +0200 | [diff] [blame] | 3674 | return -1; |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 3675 | } |
| 3676 | |
Baptiste Assmann | 83cbaa5 | 2016-11-02 15:34:05 +0100 | [diff] [blame] | 3677 | /* Sets the server's address (srv->addr) from srv->lastaddr which was filled |
| 3678 | * from the state file. This is suited for initial address configuration. |
| 3679 | * Returns 0 on success otherwise a non-zero error code. In case of error, |
| 3680 | * *err_code, if not NULL, is filled up. |
| 3681 | */ |
| 3682 | static int srv_apply_lastaddr(struct server *srv, int *err_code) |
| 3683 | { |
| 3684 | if (!str2ip2(srv->lastaddr, &srv->addr, 0)) { |
| 3685 | if (err_code) |
| 3686 | *err_code |= ERR_WARN; |
| 3687 | return 1; |
| 3688 | } |
| 3689 | return 0; |
| 3690 | } |
| 3691 | |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3692 | /* returns 0 if no error, otherwise a combination of ERR_* flags */ |
| 3693 | static int srv_iterate_initaddr(struct server *srv) |
| 3694 | { |
Christopher Faulet | ac1c60fd | 2020-10-26 10:31:17 +0100 | [diff] [blame] | 3695 | char *name = srv->hostname; |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3696 | int return_code = 0; |
| 3697 | int err_code; |
| 3698 | unsigned int methods; |
| 3699 | |
Christopher Faulet | ac1c60fd | 2020-10-26 10:31:17 +0100 | [diff] [blame] | 3700 | /* If no addr and no hostname set, get the name from the DNS SRV request */ |
| 3701 | if (!name && srv->srvrq) |
| 3702 | name = srv->srvrq->name; |
| 3703 | |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3704 | methods = srv->init_addr_methods; |
Christopher Faulet | ac1c60fd | 2020-10-26 10:31:17 +0100 | [diff] [blame] | 3705 | if (!methods) { |
| 3706 | /* otherwise default to "last,libc" */ |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3707 | srv_append_initaddr(&methods, SRV_IADDR_LAST); |
| 3708 | srv_append_initaddr(&methods, SRV_IADDR_LIBC); |
Christopher Faulet | ac1c60fd | 2020-10-26 10:31:17 +0100 | [diff] [blame] | 3709 | if (srv->resolvers_id) { |
| 3710 | /* dns resolution is configured, add "none" to not fail on startup */ |
| 3711 | srv_append_initaddr(&methods, SRV_IADDR_NONE); |
| 3712 | } |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3713 | } |
| 3714 | |
Willy Tarreau | 3eed10e | 2016-11-07 21:03:16 +0100 | [diff] [blame] | 3715 | /* "-dr" : always append "none" so that server addresses resolution |
| 3716 | * failures are silently ignored, this is convenient to validate some |
| 3717 | * configs out of their environment. |
| 3718 | */ |
| 3719 | if (global.tune.options & GTUNE_RESOLVE_DONTFAIL) |
| 3720 | srv_append_initaddr(&methods, SRV_IADDR_NONE); |
| 3721 | |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3722 | while (methods) { |
| 3723 | err_code = 0; |
| 3724 | switch (srv_get_next_initaddr(&methods)) { |
| 3725 | case SRV_IADDR_LAST: |
| 3726 | if (!srv->lastaddr) |
| 3727 | continue; |
| 3728 | if (srv_apply_lastaddr(srv, &err_code) == 0) |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 3729 | goto out; |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3730 | return_code |= err_code; |
| 3731 | break; |
| 3732 | |
| 3733 | case SRV_IADDR_LIBC: |
| 3734 | if (!srv->hostname) |
| 3735 | continue; |
| 3736 | if (srv_set_addr_via_libc(srv, &err_code) == 0) |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 3737 | goto out; |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3738 | return_code |= err_code; |
| 3739 | break; |
| 3740 | |
Willy Tarreau | 37ebe12 | 2016-11-04 15:17:58 +0100 | [diff] [blame] | 3741 | case SRV_IADDR_NONE: |
| 3742 | srv_set_admin_flag(srv, SRV_ADMF_RMAINT, NULL); |
Willy Tarreau | 465b6e5 | 2016-11-07 19:19:22 +0100 | [diff] [blame] | 3743 | if (return_code) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 3744 | ha_warning("parsing [%s:%d] : 'server %s' : could not resolve address '%s', disabling server.\n", |
Christopher Faulet | ac1c60fd | 2020-10-26 10:31:17 +0100 | [diff] [blame] | 3745 | srv->conf.file, srv->conf.line, srv->id, name); |
Willy Tarreau | 465b6e5 | 2016-11-07 19:19:22 +0100 | [diff] [blame] | 3746 | } |
Willy Tarreau | 37ebe12 | 2016-11-04 15:17:58 +0100 | [diff] [blame] | 3747 | return return_code; |
| 3748 | |
Willy Tarreau | 4310d36 | 2016-11-02 15:05:56 +0100 | [diff] [blame] | 3749 | case SRV_IADDR_IP: |
| 3750 | ipcpy(&srv->init_addr, &srv->addr); |
| 3751 | if (return_code) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 3752 | ha_warning("parsing [%s:%d] : 'server %s' : could not resolve address '%s', falling back to configured address.\n", |
Christopher Faulet | ac1c60fd | 2020-10-26 10:31:17 +0100 | [diff] [blame] | 3753 | srv->conf.file, srv->conf.line, srv->id, name); |
Willy Tarreau | 4310d36 | 2016-11-02 15:05:56 +0100 | [diff] [blame] | 3754 | } |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 3755 | goto out; |
Willy Tarreau | 4310d36 | 2016-11-02 15:05:56 +0100 | [diff] [blame] | 3756 | |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3757 | default: /* unhandled method */ |
| 3758 | break; |
| 3759 | } |
| 3760 | } |
| 3761 | |
| 3762 | if (!return_code) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 3763 | ha_alert("parsing [%s:%d] : 'server %s' : no method found to resolve address '%s'\n", |
Christopher Faulet | ac1c60fd | 2020-10-26 10:31:17 +0100 | [diff] [blame] | 3764 | srv->conf.file, srv->conf.line, srv->id, name); |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3765 | } |
Willy Tarreau | 465b6e5 | 2016-11-07 19:19:22 +0100 | [diff] [blame] | 3766 | else { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 3767 | ha_alert("parsing [%s:%d] : 'server %s' : could not resolve address '%s'.\n", |
Christopher Faulet | ac1c60fd | 2020-10-26 10:31:17 +0100 | [diff] [blame] | 3768 | srv->conf.file, srv->conf.line, srv->id, name); |
Willy Tarreau | 465b6e5 | 2016-11-07 19:19:22 +0100 | [diff] [blame] | 3769 | } |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3770 | |
| 3771 | return_code |= ERR_ALERT | ERR_FATAL; |
| 3772 | return return_code; |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 3773 | out: |
| 3774 | srv_set_dyncookie(srv); |
Thayne McCombs | 92149f9 | 2020-11-20 01:28:26 -0700 | [diff] [blame] | 3775 | srv_set_addr_desc(srv); |
Olivier Houchard | 4e69404 | 2017-03-14 20:01:29 +0100 | [diff] [blame] | 3776 | return return_code; |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3777 | } |
| 3778 | |
Baptiste Assmann | 83cbaa5 | 2016-11-02 15:34:05 +0100 | [diff] [blame] | 3779 | /* |
| 3780 | * This function parses all backends and all servers within each backend |
| 3781 | * and performs servers' addr resolution based on information provided by: |
| 3782 | * - configuration file |
| 3783 | * - server-state file (states provided by an 'old' haproxy process) |
| 3784 | * |
| 3785 | * Returns 0 if no error, otherwise, a combination of ERR_ flags. |
| 3786 | */ |
| 3787 | int srv_init_addr(void) |
| 3788 | { |
| 3789 | struct proxy *curproxy; |
| 3790 | int return_code = 0; |
| 3791 | |
Olivier Houchard | fbc74e8 | 2017-11-24 16:54:05 +0100 | [diff] [blame] | 3792 | curproxy = proxies_list; |
Baptiste Assmann | 83cbaa5 | 2016-11-02 15:34:05 +0100 | [diff] [blame] | 3793 | while (curproxy) { |
| 3794 | struct server *srv; |
Baptiste Assmann | 83cbaa5 | 2016-11-02 15:34:05 +0100 | [diff] [blame] | 3795 | |
| 3796 | /* servers are in backend only */ |
Amaury Denoyelle | e3c4192 | 2021-01-06 14:28:50 +0100 | [diff] [blame] | 3797 | if (!(curproxy->cap & PR_CAP_BE) || curproxy->disabled) |
Baptiste Assmann | 83cbaa5 | 2016-11-02 15:34:05 +0100 | [diff] [blame] | 3798 | goto srv_init_addr_next; |
| 3799 | |
Willy Tarreau | 25e5152 | 2016-11-04 15:10:17 +0100 | [diff] [blame] | 3800 | for (srv = curproxy->srv; srv; srv = srv->next) |
Christopher Faulet | ac1c60fd | 2020-10-26 10:31:17 +0100 | [diff] [blame] | 3801 | if (srv->hostname || srv->srvrq) |
Willy Tarreau | 3d609a7 | 2017-09-06 14:22:45 +0200 | [diff] [blame] | 3802 | return_code |= srv_iterate_initaddr(srv); |
Baptiste Assmann | 83cbaa5 | 2016-11-02 15:34:05 +0100 | [diff] [blame] | 3803 | |
| 3804 | srv_init_addr_next: |
| 3805 | curproxy = curproxy->next; |
| 3806 | } |
| 3807 | |
| 3808 | return return_code; |
| 3809 | } |
| 3810 | |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 3811 | /* |
| 3812 | * Must be called with the server lock held. |
| 3813 | */ |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 3814 | const char *srv_update_fqdn(struct server *server, const char *fqdn, const char *updater, int resolv_locked) |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 3815 | { |
| 3816 | |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 3817 | struct buffer *msg; |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 3818 | |
| 3819 | msg = get_trash_chunk(); |
| 3820 | chunk_reset(msg); |
| 3821 | |
Tim Duesterhus | e5ff141 | 2021-01-02 22:31:53 +0100 | [diff] [blame] | 3822 | if (server->hostname && strcmp(fqdn, server->hostname) == 0) { |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 3823 | chunk_appendf(msg, "no need to change the FDQN"); |
| 3824 | goto out; |
| 3825 | } |
| 3826 | |
| 3827 | if (strlen(fqdn) > DNS_MAX_NAME_SIZE || invalid_domainchar(fqdn)) { |
| 3828 | chunk_appendf(msg, "invalid fqdn '%s'", fqdn); |
| 3829 | goto out; |
| 3830 | } |
| 3831 | |
| 3832 | chunk_appendf(msg, "%s/%s changed its FQDN from %s to %s", |
| 3833 | server->proxy->id, server->id, server->hostname, fqdn); |
| 3834 | |
Emeric Brun | 08622d3 | 2020-12-23 17:41:43 +0100 | [diff] [blame] | 3835 | if (srv_set_fqdn(server, fqdn, resolv_locked) < 0) { |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 3836 | chunk_reset(msg); |
| 3837 | chunk_appendf(msg, "could not update %s/%s FQDN", |
| 3838 | server->proxy->id, server->id); |
| 3839 | goto out; |
| 3840 | } |
| 3841 | |
| 3842 | /* Flag as FQDN set from stats socket. */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 3843 | server->next_admin |= SRV_ADMF_HMAINT; |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 3844 | |
| 3845 | out: |
| 3846 | if (updater) |
| 3847 | chunk_appendf(msg, " by '%s'", updater); |
| 3848 | chunk_appendf(msg, "\n"); |
| 3849 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 3850 | return msg->area; |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 3851 | } |
| 3852 | |
| 3853 | |
Willy Tarreau | 21b069d | 2016-11-23 17:15:08 +0100 | [diff] [blame] | 3854 | /* Expects to find a backend and a server in <arg> under the form <backend>/<server>, |
| 3855 | * and returns the pointer to the server. Otherwise, display adequate error messages |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 3856 | * on the CLI, sets the CLI's state to CLI_ST_PRINT and returns NULL. This is only |
Willy Tarreau | 21b069d | 2016-11-23 17:15:08 +0100 | [diff] [blame] | 3857 | * used for CLI commands requiring a server name. |
| 3858 | * Important: the <arg> is modified to remove the '/'. |
| 3859 | */ |
| 3860 | struct server *cli_find_server(struct appctx *appctx, char *arg) |
| 3861 | { |
| 3862 | struct proxy *px; |
| 3863 | struct server *sv; |
| 3864 | char *line; |
| 3865 | |
| 3866 | /* split "backend/server" and make <line> point to server */ |
| 3867 | for (line = arg; *line; line++) |
| 3868 | if (*line == '/') { |
| 3869 | *line++ = '\0'; |
| 3870 | break; |
| 3871 | } |
| 3872 | |
| 3873 | if (!*line || !*arg) { |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 3874 | cli_err(appctx, "Require 'backend/server'.\n"); |
Willy Tarreau | 21b069d | 2016-11-23 17:15:08 +0100 | [diff] [blame] | 3875 | return NULL; |
| 3876 | } |
| 3877 | |
| 3878 | if (!get_backend_server(arg, line, &px, &sv)) { |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 3879 | cli_err(appctx, px ? "No such server.\n" : "No such backend.\n"); |
Willy Tarreau | 21b069d | 2016-11-23 17:15:08 +0100 | [diff] [blame] | 3880 | return NULL; |
| 3881 | } |
| 3882 | |
Willy Tarreau | c3914d4 | 2020-09-24 08:39:22 +0200 | [diff] [blame] | 3883 | if (px->disabled) { |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 3884 | cli_err(appctx, "Proxy is disabled.\n"); |
Willy Tarreau | 21b069d | 2016-11-23 17:15:08 +0100 | [diff] [blame] | 3885 | return NULL; |
| 3886 | } |
| 3887 | |
| 3888 | return sv; |
| 3889 | } |
| 3890 | |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3891 | |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 3892 | /* grabs the server lock */ |
Aurélien Nephtali | abbf607 | 2018-04-18 13:26:46 +0200 | [diff] [blame] | 3893 | static int cli_parse_set_server(char **args, char *payload, struct appctx *appctx, void *private) |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3894 | { |
| 3895 | struct server *sv; |
| 3896 | const char *warning; |
| 3897 | |
| 3898 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 3899 | return 1; |
| 3900 | |
| 3901 | sv = cli_find_server(appctx, args[2]); |
| 3902 | if (!sv) |
| 3903 | return 1; |
| 3904 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3905 | HA_SPIN_LOCK(SERVER_LOCK, &sv->lock); |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 3906 | |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3907 | if (strcmp(args[3], "weight") == 0) { |
| 3908 | warning = server_parse_weight_change_request(sv, args[4]); |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 3909 | if (warning) |
| 3910 | cli_err(appctx, warning); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3911 | } |
| 3912 | else if (strcmp(args[3], "state") == 0) { |
| 3913 | if (strcmp(args[4], "ready") == 0) |
| 3914 | srv_adm_set_ready(sv); |
| 3915 | else if (strcmp(args[4], "drain") == 0) |
| 3916 | srv_adm_set_drain(sv); |
| 3917 | else if (strcmp(args[4], "maint") == 0) |
| 3918 | srv_adm_set_maint(sv); |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 3919 | else |
| 3920 | cli_err(appctx, "'set server <srv> state' expects 'ready', 'drain' and 'maint'.\n"); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3921 | } |
| 3922 | else if (strcmp(args[3], "health") == 0) { |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 3923 | if (sv->track) |
| 3924 | cli_err(appctx, "cannot change health on a tracking server.\n"); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3925 | else if (strcmp(args[4], "up") == 0) { |
| 3926 | sv->check.health = sv->check.rise + sv->check.fall - 1; |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 3927 | srv_set_running(sv, "changed from CLI", NULL); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3928 | } |
| 3929 | else if (strcmp(args[4], "stopping") == 0) { |
| 3930 | sv->check.health = sv->check.rise + sv->check.fall - 1; |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 3931 | srv_set_stopping(sv, "changed from CLI", NULL); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3932 | } |
| 3933 | else if (strcmp(args[4], "down") == 0) { |
| 3934 | sv->check.health = 0; |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 3935 | srv_set_stopped(sv, "changed from CLI", NULL); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3936 | } |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 3937 | else |
| 3938 | cli_err(appctx, "'set server <srv> health' expects 'up', 'stopping', or 'down'.\n"); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3939 | } |
| 3940 | else if (strcmp(args[3], "agent") == 0) { |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 3941 | if (!(sv->agent.state & CHK_ST_ENABLED)) |
| 3942 | cli_err(appctx, "agent checks are not enabled on this server.\n"); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3943 | else if (strcmp(args[4], "up") == 0) { |
| 3944 | sv->agent.health = sv->agent.rise + sv->agent.fall - 1; |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 3945 | srv_set_running(sv, "changed from CLI", NULL); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3946 | } |
| 3947 | else if (strcmp(args[4], "down") == 0) { |
| 3948 | sv->agent.health = 0; |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 3949 | srv_set_stopped(sv, "changed from CLI", NULL); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3950 | } |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 3951 | else |
| 3952 | cli_err(appctx, "'set server <srv> agent' expects 'up' or 'down'.\n"); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3953 | } |
Misiek | 2da082d | 2017-01-09 09:40:42 +0100 | [diff] [blame] | 3954 | else if (strcmp(args[3], "agent-addr") == 0) { |
William Dauchy | 7cabc06 | 2021-02-11 22:51:24 +0100 | [diff] [blame] | 3955 | char *addr = NULL; |
| 3956 | char *port = NULL; |
| 3957 | if (strlen(args[4]) == 0) { |
| 3958 | cli_err(appctx, "set server <b>/<s> agent-addr requires" |
| 3959 | " an address and optionally a port.\n"); |
| 3960 | goto out_unlock; |
| 3961 | } |
| 3962 | addr = args[4]; |
| 3963 | if (strcmp(args[5], "port") == 0) |
| 3964 | port = args[6]; |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 3965 | warning = srv_update_agent_addr_port(sv, addr, port); |
William Dauchy | 7cabc06 | 2021-02-11 22:51:24 +0100 | [diff] [blame] | 3966 | if (warning) |
| 3967 | cli_msg(appctx, LOG_WARNING, warning); |
| 3968 | } |
| 3969 | else if (strcmp(args[3], "agent-port") == 0) { |
| 3970 | char *port = NULL; |
| 3971 | if (strlen(args[4]) == 0) { |
| 3972 | cli_err(appctx, "set server <b>/<s> agent-port requires" |
| 3973 | " a port.\n"); |
| 3974 | goto out_unlock; |
| 3975 | } |
| 3976 | port = args[4]; |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 3977 | warning = srv_update_agent_addr_port(sv, NULL, port); |
William Dauchy | 7cabc06 | 2021-02-11 22:51:24 +0100 | [diff] [blame] | 3978 | if (warning) |
| 3979 | cli_msg(appctx, LOG_WARNING, warning); |
Misiek | 2da082d | 2017-01-09 09:40:42 +0100 | [diff] [blame] | 3980 | } |
| 3981 | else if (strcmp(args[3], "agent-send") == 0) { |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 3982 | if (!(sv->agent.state & CHK_ST_ENABLED)) |
| 3983 | cli_err(appctx, "agent checks are not enabled on this server.\n"); |
| 3984 | else { |
Christopher Faulet | 0ae3d1d | 2020-04-06 17:54:24 +0200 | [diff] [blame] | 3985 | if (!set_srv_agent_send(sv, args[4])) |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 3986 | cli_err(appctx, "cannot allocate memory for new string.\n"); |
Misiek | 2da082d | 2017-01-09 09:40:42 +0100 | [diff] [blame] | 3987 | } |
| 3988 | } |
William Dauchy | b456e1f | 2021-02-11 22:51:23 +0100 | [diff] [blame] | 3989 | else if (strcmp(args[3], "check-addr") == 0) { |
| 3990 | char *addr = NULL; |
| 3991 | char *port = NULL; |
| 3992 | if (strlen(args[4]) == 0) { |
| 3993 | cli_err(appctx, "set server <b>/<s> check-addr requires" |
| 3994 | " an address and optionally a port.\n"); |
Willy Tarreau | 6ce38f3 | 2017-11-05 10:19:23 +0100 | [diff] [blame] | 3995 | goto out_unlock; |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 3996 | } |
William Dauchy | b456e1f | 2021-02-11 22:51:23 +0100 | [diff] [blame] | 3997 | addr = args[4]; |
| 3998 | if (strcmp(args[5], "port") == 0) |
| 3999 | port = args[6]; |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 4000 | warning = srv_update_check_addr_port(sv, addr, port); |
William Dauchy | b456e1f | 2021-02-11 22:51:23 +0100 | [diff] [blame] | 4001 | if (warning) |
| 4002 | cli_msg(appctx, LOG_WARNING, warning); |
| 4003 | } |
| 4004 | else if (strcmp(args[3], "check-port") == 0) { |
| 4005 | char *port = NULL; |
| 4006 | if (strlen(args[4]) == 0) { |
| 4007 | cli_err(appctx, "set server <b>/<s> check-port requires" |
| 4008 | " a port.\n"); |
Willy Tarreau | 6ce38f3 | 2017-11-05 10:19:23 +0100 | [diff] [blame] | 4009 | goto out_unlock; |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 4010 | } |
William Dauchy | b456e1f | 2021-02-11 22:51:23 +0100 | [diff] [blame] | 4011 | port = args[4]; |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 4012 | warning = srv_update_check_addr_port(sv, NULL, port); |
William Dauchy | b456e1f | 2021-02-11 22:51:23 +0100 | [diff] [blame] | 4013 | if (warning) |
| 4014 | cli_msg(appctx, LOG_WARNING, warning); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 4015 | } |
| 4016 | else if (strcmp(args[3], "addr") == 0) { |
| 4017 | char *addr = NULL; |
| 4018 | char *port = NULL; |
| 4019 | if (strlen(args[4]) == 0) { |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 4020 | cli_err(appctx, "set server <b>/<s> addr requires an address and optionally a port.\n"); |
Willy Tarreau | 6ce38f3 | 2017-11-05 10:19:23 +0100 | [diff] [blame] | 4021 | goto out_unlock; |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 4022 | } |
| 4023 | else { |
| 4024 | addr = args[4]; |
| 4025 | } |
| 4026 | if (strcmp(args[5], "port") == 0) { |
| 4027 | port = args[6]; |
| 4028 | } |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 4029 | warning = srv_update_addr_port(sv, addr, port, "stats socket command"); |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 4030 | if (warning) |
| 4031 | cli_msg(appctx, LOG_WARNING, warning); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 4032 | srv_clr_admin_flag(sv, SRV_ADMF_RMAINT); |
| 4033 | } |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 4034 | else if (strcmp(args[3], "fqdn") == 0) { |
| 4035 | if (!*args[4]) { |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 4036 | cli_err(appctx, "set server <b>/<s> fqdn requires a FQDN.\n"); |
Willy Tarreau | 6ce38f3 | 2017-11-05 10:19:23 +0100 | [diff] [blame] | 4037 | goto out_unlock; |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 4038 | } |
Baptiste Assmann | 13a9232 | 2019-06-07 09:40:55 +0200 | [diff] [blame] | 4039 | /* ensure runtime resolver will process this new fqdn */ |
| 4040 | if (sv->flags & SRV_F_NO_RESOLUTION) { |
| 4041 | sv->flags &= ~SRV_F_NO_RESOLUTION; |
| 4042 | } |
Christopher Faulet | 69beaa9 | 2021-02-16 12:07:47 +0100 | [diff] [blame] | 4043 | warning = srv_update_fqdn(sv, args[4], "stats socket command", 0); |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 4044 | if (warning) |
| 4045 | cli_msg(appctx, LOG_WARNING, warning); |
Frédéric Lécaille | b418c12 | 2017-04-26 11:24:02 +0200 | [diff] [blame] | 4046 | } |
William Dauchy | f637044 | 2020-11-14 19:25:33 +0100 | [diff] [blame] | 4047 | else if (strcmp(args[3], "ssl") == 0) { |
| 4048 | #ifdef USE_OPENSSL |
| 4049 | if (sv->ssl_ctx.ctx == NULL) { |
| 4050 | cli_err(appctx, "'set server <srv> ssl' cannot be set. " |
| 4051 | " default-server should define ssl settings\n"); |
| 4052 | goto out_unlock; |
| 4053 | } else if (strcmp(args[4], "on") == 0) { |
| 4054 | ssl_sock_set_srv(sv, 1); |
| 4055 | } else if (strcmp(args[4], "off") == 0) { |
| 4056 | ssl_sock_set_srv(sv, 0); |
| 4057 | } else { |
| 4058 | cli_err(appctx, "'set server <srv> ssl' expects 'on' or 'off'.\n"); |
| 4059 | goto out_unlock; |
| 4060 | } |
| 4061 | srv_cleanup_connections(sv); |
| 4062 | cli_msg(appctx, LOG_NOTICE, "server ssl setting updated.\n"); |
| 4063 | #else |
| 4064 | cli_msg(appctx, LOG_NOTICE, "server ssl setting not supported.\n"); |
| 4065 | #endif |
| 4066 | } else { |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 4067 | cli_err(appctx, |
William Dauchy | 3f4ec7d | 2021-02-15 17:22:16 +0100 | [diff] [blame] | 4068 | "usage: set server <backend>/<server> " |
| 4069 | "addr | agent | agent-addr | agent-port | agent-send | " |
| 4070 | "check-addr | check-port | fqdn | health | ssl | " |
| 4071 | "state | weight\n"); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 4072 | } |
Willy Tarreau | 6ce38f3 | 2017-11-05 10:19:23 +0100 | [diff] [blame] | 4073 | out_unlock: |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 4074 | HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock); |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 4075 | return 1; |
| 4076 | } |
| 4077 | |
Aurélien Nephtali | abbf607 | 2018-04-18 13:26:46 +0200 | [diff] [blame] | 4078 | static int cli_parse_get_weight(char **args, char *payload, struct appctx *appctx, void *private) |
William Lallemand | 6b16094 | 2016-11-22 12:34:35 +0100 | [diff] [blame] | 4079 | { |
| 4080 | struct stream_interface *si = appctx->owner; |
| 4081 | struct proxy *px; |
| 4082 | struct server *sv; |
| 4083 | char *line; |
| 4084 | |
| 4085 | |
| 4086 | /* split "backend/server" and make <line> point to server */ |
| 4087 | for (line = args[2]; *line; line++) |
| 4088 | if (*line == '/') { |
| 4089 | *line++ = '\0'; |
| 4090 | break; |
| 4091 | } |
| 4092 | |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 4093 | if (!*line) |
| 4094 | return cli_err(appctx, "Require 'backend/server'.\n"); |
William Lallemand | 6b16094 | 2016-11-22 12:34:35 +0100 | [diff] [blame] | 4095 | |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 4096 | if (!get_backend_server(args[2], line, &px, &sv)) |
| 4097 | return cli_err(appctx, px ? "No such server.\n" : "No such backend.\n"); |
William Lallemand | 6b16094 | 2016-11-22 12:34:35 +0100 | [diff] [blame] | 4098 | |
| 4099 | /* return server's effective weight at the moment */ |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 4100 | snprintf(trash.area, trash.size, "%d (initial %d)\n", sv->uweight, |
| 4101 | sv->iweight); |
| 4102 | if (ci_putstr(si_ic(si), trash.area) == -1) { |
Willy Tarreau | db39843 | 2018-11-15 11:08:52 +0100 | [diff] [blame] | 4103 | si_rx_room_blk(si); |
Christopher Faulet | 90b5abe | 2016-12-05 14:25:08 +0100 | [diff] [blame] | 4104 | return 0; |
| 4105 | } |
William Lallemand | 6b16094 | 2016-11-22 12:34:35 +0100 | [diff] [blame] | 4106 | return 1; |
| 4107 | } |
| 4108 | |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4109 | /* Parse a "set weight" command. |
| 4110 | * |
| 4111 | * Grabs the server lock. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4112 | */ |
Aurélien Nephtali | abbf607 | 2018-04-18 13:26:46 +0200 | [diff] [blame] | 4113 | static int cli_parse_set_weight(char **args, char *payload, struct appctx *appctx, void *private) |
William Lallemand | 6b16094 | 2016-11-22 12:34:35 +0100 | [diff] [blame] | 4114 | { |
| 4115 | struct server *sv; |
| 4116 | const char *warning; |
| 4117 | |
| 4118 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 4119 | return 1; |
| 4120 | |
| 4121 | sv = cli_find_server(appctx, args[2]); |
| 4122 | if (!sv) |
| 4123 | return 1; |
| 4124 | |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4125 | HA_SPIN_LOCK(SERVER_LOCK, &sv->lock); |
| 4126 | |
William Lallemand | 6b16094 | 2016-11-22 12:34:35 +0100 | [diff] [blame] | 4127 | warning = server_parse_weight_change_request(sv, args[3]); |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 4128 | if (warning) |
| 4129 | cli_err(appctx, warning); |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4130 | |
| 4131 | HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock); |
| 4132 | |
William Lallemand | 6b16094 | 2016-11-22 12:34:35 +0100 | [diff] [blame] | 4133 | return 1; |
| 4134 | } |
| 4135 | |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4136 | /* parse a "set maxconn server" command. It always returns 1. |
| 4137 | * |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4138 | * Grabs the server lock. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4139 | */ |
Aurélien Nephtali | abbf607 | 2018-04-18 13:26:46 +0200 | [diff] [blame] | 4140 | static int cli_parse_set_maxconn_server(char **args, char *payload, struct appctx *appctx, void *private) |
Willy Tarreau | b802627 | 2016-11-23 11:26:56 +0100 | [diff] [blame] | 4141 | { |
| 4142 | struct server *sv; |
| 4143 | const char *warning; |
| 4144 | |
| 4145 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 4146 | return 1; |
| 4147 | |
| 4148 | sv = cli_find_server(appctx, args[3]); |
| 4149 | if (!sv) |
| 4150 | return 1; |
| 4151 | |
| 4152 | warning = server_parse_maxconn_change_request(sv, args[4]); |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 4153 | if (warning) |
| 4154 | cli_err(appctx, warning); |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4155 | |
Willy Tarreau | b802627 | 2016-11-23 11:26:56 +0100 | [diff] [blame] | 4156 | return 1; |
| 4157 | } |
William Lallemand | 6b16094 | 2016-11-22 12:34:35 +0100 | [diff] [blame] | 4158 | |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4159 | /* parse a "disable agent" command. It always returns 1. |
| 4160 | * |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4161 | * Grabs the server lock. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4162 | */ |
Aurélien Nephtali | abbf607 | 2018-04-18 13:26:46 +0200 | [diff] [blame] | 4163 | static int cli_parse_disable_agent(char **args, char *payload, struct appctx *appctx, void *private) |
Willy Tarreau | 58d9cb7 | 2016-11-24 12:56:01 +0100 | [diff] [blame] | 4164 | { |
| 4165 | struct server *sv; |
| 4166 | |
| 4167 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 4168 | return 1; |
| 4169 | |
| 4170 | sv = cli_find_server(appctx, args[2]); |
| 4171 | if (!sv) |
| 4172 | return 1; |
| 4173 | |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4174 | HA_SPIN_LOCK(SERVER_LOCK, &sv->lock); |
Willy Tarreau | 58d9cb7 | 2016-11-24 12:56:01 +0100 | [diff] [blame] | 4175 | sv->agent.state &= ~CHK_ST_ENABLED; |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4176 | HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock); |
Willy Tarreau | 58d9cb7 | 2016-11-24 12:56:01 +0100 | [diff] [blame] | 4177 | return 1; |
| 4178 | } |
| 4179 | |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4180 | /* parse a "disable health" command. It always returns 1. |
| 4181 | * |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4182 | * Grabs the server lock. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4183 | */ |
Aurélien Nephtali | abbf607 | 2018-04-18 13:26:46 +0200 | [diff] [blame] | 4184 | static int cli_parse_disable_health(char **args, char *payload, struct appctx *appctx, void *private) |
Willy Tarreau | 2c04eda | 2016-11-24 12:51:04 +0100 | [diff] [blame] | 4185 | { |
| 4186 | struct server *sv; |
| 4187 | |
| 4188 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 4189 | return 1; |
| 4190 | |
| 4191 | sv = cli_find_server(appctx, args[2]); |
| 4192 | if (!sv) |
| 4193 | return 1; |
| 4194 | |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4195 | HA_SPIN_LOCK(SERVER_LOCK, &sv->lock); |
Willy Tarreau | 2c04eda | 2016-11-24 12:51:04 +0100 | [diff] [blame] | 4196 | sv->check.state &= ~CHK_ST_ENABLED; |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4197 | HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock); |
Willy Tarreau | 2c04eda | 2016-11-24 12:51:04 +0100 | [diff] [blame] | 4198 | return 1; |
| 4199 | } |
| 4200 | |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4201 | /* parse a "disable server" command. It always returns 1. |
| 4202 | * |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4203 | * Grabs the server lock. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4204 | */ |
Aurélien Nephtali | abbf607 | 2018-04-18 13:26:46 +0200 | [diff] [blame] | 4205 | static int cli_parse_disable_server(char **args, char *payload, struct appctx *appctx, void *private) |
Willy Tarreau | ffb4d58 | 2016-11-24 12:47:00 +0100 | [diff] [blame] | 4206 | { |
| 4207 | struct server *sv; |
| 4208 | |
| 4209 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 4210 | return 1; |
| 4211 | |
| 4212 | sv = cli_find_server(appctx, args[2]); |
| 4213 | if (!sv) |
| 4214 | return 1; |
| 4215 | |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4216 | HA_SPIN_LOCK(SERVER_LOCK, &sv->lock); |
Willy Tarreau | ffb4d58 | 2016-11-24 12:47:00 +0100 | [diff] [blame] | 4217 | srv_adm_set_maint(sv); |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4218 | HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock); |
Willy Tarreau | ffb4d58 | 2016-11-24 12:47:00 +0100 | [diff] [blame] | 4219 | return 1; |
| 4220 | } |
| 4221 | |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4222 | /* parse a "enable agent" command. It always returns 1. |
| 4223 | * |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4224 | * Grabs the server lock. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4225 | */ |
Aurélien Nephtali | abbf607 | 2018-04-18 13:26:46 +0200 | [diff] [blame] | 4226 | static int cli_parse_enable_agent(char **args, char *payload, struct appctx *appctx, void *private) |
Willy Tarreau | 58d9cb7 | 2016-11-24 12:56:01 +0100 | [diff] [blame] | 4227 | { |
| 4228 | struct server *sv; |
| 4229 | |
| 4230 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 4231 | return 1; |
| 4232 | |
| 4233 | sv = cli_find_server(appctx, args[2]); |
| 4234 | if (!sv) |
| 4235 | return 1; |
| 4236 | |
Willy Tarreau | 9d00869 | 2019-08-09 11:21:01 +0200 | [diff] [blame] | 4237 | if (!(sv->agent.state & CHK_ST_CONFIGURED)) |
| 4238 | return cli_err(appctx, "Agent was not configured on this server, cannot enable.\n"); |
Willy Tarreau | 58d9cb7 | 2016-11-24 12:56:01 +0100 | [diff] [blame] | 4239 | |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4240 | HA_SPIN_LOCK(SERVER_LOCK, &sv->lock); |
Willy Tarreau | 58d9cb7 | 2016-11-24 12:56:01 +0100 | [diff] [blame] | 4241 | sv->agent.state |= CHK_ST_ENABLED; |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4242 | HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock); |
Willy Tarreau | 58d9cb7 | 2016-11-24 12:56:01 +0100 | [diff] [blame] | 4243 | return 1; |
| 4244 | } |
| 4245 | |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4246 | /* parse a "enable health" command. It always returns 1. |
| 4247 | * |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4248 | * Grabs the server lock. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4249 | */ |
Aurélien Nephtali | abbf607 | 2018-04-18 13:26:46 +0200 | [diff] [blame] | 4250 | static int cli_parse_enable_health(char **args, char *payload, struct appctx *appctx, void *private) |
Willy Tarreau | 2c04eda | 2016-11-24 12:51:04 +0100 | [diff] [blame] | 4251 | { |
| 4252 | struct server *sv; |
| 4253 | |
| 4254 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 4255 | return 1; |
| 4256 | |
| 4257 | sv = cli_find_server(appctx, args[2]); |
| 4258 | if (!sv) |
| 4259 | return 1; |
| 4260 | |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4261 | HA_SPIN_LOCK(SERVER_LOCK, &sv->lock); |
Willy Tarreau | 2c04eda | 2016-11-24 12:51:04 +0100 | [diff] [blame] | 4262 | sv->check.state |= CHK_ST_ENABLED; |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4263 | HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock); |
Willy Tarreau | 2c04eda | 2016-11-24 12:51:04 +0100 | [diff] [blame] | 4264 | return 1; |
| 4265 | } |
| 4266 | |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4267 | /* parse a "enable server" command. It always returns 1. |
| 4268 | * |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4269 | * Grabs the server lock. |
Willy Tarreau | 46b7f53 | 2018-08-21 11:54:26 +0200 | [diff] [blame] | 4270 | */ |
Aurélien Nephtali | abbf607 | 2018-04-18 13:26:46 +0200 | [diff] [blame] | 4271 | static int cli_parse_enable_server(char **args, char *payload, struct appctx *appctx, void *private) |
Willy Tarreau | ffb4d58 | 2016-11-24 12:47:00 +0100 | [diff] [blame] | 4272 | { |
| 4273 | struct server *sv; |
| 4274 | |
| 4275 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 4276 | return 1; |
| 4277 | |
| 4278 | sv = cli_find_server(appctx, args[2]); |
| 4279 | if (!sv) |
| 4280 | return 1; |
| 4281 | |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4282 | HA_SPIN_LOCK(SERVER_LOCK, &sv->lock); |
Willy Tarreau | ffb4d58 | 2016-11-24 12:47:00 +0100 | [diff] [blame] | 4283 | srv_adm_set_ready(sv); |
Olivier Houchard | e9bad0a | 2018-01-17 17:39:34 +0100 | [diff] [blame] | 4284 | if (!(sv->flags & SRV_F_COOKIESET) |
| 4285 | && (sv->proxy->ck_opts & PR_CK_DYNAMIC) && |
| 4286 | sv->cookie) |
| 4287 | srv_check_for_dup_dyncookie(sv); |
Willy Tarreau | 3bcc269 | 2018-08-21 15:35:31 +0200 | [diff] [blame] | 4288 | HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock); |
Willy Tarreau | ffb4d58 | 2016-11-24 12:47:00 +0100 | [diff] [blame] | 4289 | return 1; |
| 4290 | } |
| 4291 | |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4292 | /* Allocates data structure related to load balancing for the server <sv>. It |
| 4293 | * is only required for dynamic servers. |
| 4294 | * |
| 4295 | * At the moment, the server lock is not used as this function is only called |
| 4296 | * for a dynamic server not yet registered. |
| 4297 | * |
| 4298 | * Returns 1 on success, 0 on allocation failure. |
| 4299 | */ |
| 4300 | static int srv_alloc_lb(struct server *sv, struct proxy *be) |
| 4301 | { |
| 4302 | int node; |
| 4303 | |
| 4304 | sv->lb_tree = (sv->flags & SRV_F_BACKUP) ? |
| 4305 | &be->lbprm.chash.bck : &be->lbprm.chash.act; |
| 4306 | sv->lb_nodes_tot = sv->uweight * BE_WEIGHT_SCALE; |
| 4307 | sv->lb_nodes_now = 0; |
| 4308 | |
Willy Tarreau | dcb121f | 2021-04-20 11:37:45 +0200 | [diff] [blame] | 4309 | if (((be->lbprm.algo & (BE_LB_KIND | BE_LB_PARM)) == (BE_LB_KIND_RR | BE_LB_RR_RANDOM)) || |
| 4310 | ((be->lbprm.algo & (BE_LB_KIND | BE_LB_HASH_TYPE)) == (BE_LB_KIND_HI | BE_LB_HASH_CONS))) { |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4311 | sv->lb_nodes = calloc(sv->lb_nodes_tot, sizeof(*sv->lb_nodes)); |
| 4312 | |
| 4313 | if (!sv->lb_nodes) |
| 4314 | return 0; |
| 4315 | |
| 4316 | for (node = 0; node < sv->lb_nodes_tot; node++) { |
| 4317 | sv->lb_nodes[node].server = sv; |
| 4318 | sv->lb_nodes[node].node.key = full_hash(sv->puid * SRV_EWGHT_RANGE + node); |
| 4319 | } |
| 4320 | } |
| 4321 | |
| 4322 | return 1; |
| 4323 | } |
| 4324 | |
| 4325 | /* Parse a "add server" command |
| 4326 | * Returns 0 if the server has been successfully initialized, 1 on failure. |
| 4327 | */ |
| 4328 | static int cli_parse_add_server(char **args, char *payload, struct appctx *appctx, void *private) |
| 4329 | { |
| 4330 | struct proxy *be; |
| 4331 | struct server *srv; |
| 4332 | char *be_name, *sv_name; |
| 4333 | char *errmsg = NULL; |
| 4334 | int errcode, argc; |
Amaury Denoyelle | 1217356 | 2021-06-09 09:58:47 +0200 | [diff] [blame] | 4335 | int next_id, i; |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4336 | const int parse_flags = SRV_PARSE_DYNAMIC|SRV_PARSE_PARSE_ADDR; |
| 4337 | |
| 4338 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 4339 | return 1; |
| 4340 | |
| 4341 | ++args; |
| 4342 | |
| 4343 | sv_name = be_name = args[1]; |
| 4344 | /* split backend/server arg */ |
| 4345 | while (*sv_name && *(++sv_name)) { |
| 4346 | if (*sv_name == '/') { |
| 4347 | *sv_name = '\0'; |
| 4348 | ++sv_name; |
| 4349 | break; |
| 4350 | } |
| 4351 | } |
| 4352 | |
| 4353 | if (!*sv_name) |
| 4354 | return cli_err(appctx, "Require 'backend/server'."); |
| 4355 | |
Amaury Denoyelle | cece918 | 2021-04-20 17:09:08 +0200 | [diff] [blame] | 4356 | be = proxy_be_by_name(be_name); |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4357 | if (!be) |
| 4358 | return cli_err(appctx, "No such backend."); |
| 4359 | |
| 4360 | if (!(be->lbprm.algo & BE_LB_PROP_DYN)) { |
Amaury Denoyelle | eafd701 | 2021-04-29 14:59:42 +0200 | [diff] [blame] | 4361 | cli_err(appctx, "Backend must use a dynamic load balancing to support dynamic servers."); |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4362 | return 1; |
| 4363 | } |
| 4364 | |
Amaury Denoyelle | d50d4bf | 2021-06-10 15:26:44 +0200 | [diff] [blame] | 4365 | /* At this point, some operations might not be thread-safe anymore. This |
| 4366 | * might be the case for parsing handlers which were designed to run |
| 4367 | * only at the starting stage on single-thread mode. |
| 4368 | * |
| 4369 | * Activate thread isolation to ensure thread-safety. |
| 4370 | */ |
| 4371 | thread_isolate(); |
| 4372 | |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4373 | args[1] = sv_name; |
| 4374 | errcode = _srv_parse_init(&srv, args, &argc, be, parse_flags, &errmsg); |
| 4375 | if (errcode) { |
| 4376 | if (errmsg) |
| 4377 | cli_dynerr(appctx, errmsg); |
| 4378 | goto out; |
| 4379 | } |
| 4380 | |
| 4381 | while (*args[argc]) { |
| 4382 | errcode = _srv_parse_kw(srv, args, &argc, be, parse_flags, &errmsg); |
| 4383 | |
| 4384 | if (errcode) { |
| 4385 | if (errmsg) |
| 4386 | cli_dynerr(appctx, errmsg); |
| 4387 | goto out; |
| 4388 | } |
| 4389 | } |
| 4390 | |
| 4391 | _srv_parse_finalize(args, argc, srv, be, parse_flags, &errmsg); |
| 4392 | if (errmsg) { |
| 4393 | cli_dynerr(appctx, errmsg); |
| 4394 | goto out; |
| 4395 | } |
| 4396 | |
Amaury Denoyelle | 3046723 | 2021-03-12 18:03:27 +0100 | [diff] [blame] | 4397 | if (srv->mux_proto) { |
| 4398 | if (!conn_get_best_mux_entry(srv->mux_proto->token, PROTO_SIDE_BE, be->mode)) { |
| 4399 | cli_err(appctx, "MUX protocol is not usable for server."); |
| 4400 | goto out; |
| 4401 | } |
| 4402 | } |
| 4403 | |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4404 | srv->per_thr = calloc(global.nbthread, sizeof(*srv->per_thr)); |
| 4405 | if (!srv->per_thr) { |
| 4406 | cli_err(appctx, "failed to allocate per-thread lists for server."); |
| 4407 | goto out; |
| 4408 | } |
| 4409 | |
| 4410 | for (i = 0; i < global.nbthread; i++) { |
| 4411 | srv->per_thr[i].idle_conns = EB_ROOT; |
| 4412 | srv->per_thr[i].safe_conns = EB_ROOT; |
| 4413 | srv->per_thr[i].avail_conns = EB_ROOT; |
| 4414 | MT_LIST_INIT(&srv->per_thr[i].streams); |
| 4415 | } |
| 4416 | |
| 4417 | if (srv->max_idle_conns != 0) { |
| 4418 | srv->curr_idle_thr = calloc(global.nbthread, sizeof(*srv->curr_idle_thr)); |
| 4419 | if (!srv->curr_idle_thr) { |
| 4420 | cli_err(appctx, "failed to allocate counters for server."); |
| 4421 | goto out; |
| 4422 | } |
| 4423 | } |
| 4424 | |
| 4425 | if (!srv_alloc_lb(srv, be)) { |
| 4426 | cli_err(appctx, "Failed to initialize load-balancing data."); |
| 4427 | goto out; |
| 4428 | } |
| 4429 | |
| 4430 | if (!stats_allocate_proxy_counters_internal(&srv->extra_counters, |
| 4431 | COUNTERS_SV, |
| 4432 | STATS_PX_CAP_SRV)) { |
| 4433 | cli_err(appctx, "failed to allocate extra counters for server."); |
| 4434 | goto out; |
| 4435 | } |
| 4436 | |
Amaury Denoyelle | d50d4bf | 2021-06-10 15:26:44 +0200 | [diff] [blame] | 4437 | /* Attach the server to the end of the proxy linked list. Note that this |
| 4438 | * operation is not thread-safe so this is executed under thread |
| 4439 | * isolation. |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4440 | * |
Amaury Denoyelle | d50d4bf | 2021-06-10 15:26:44 +0200 | [diff] [blame] | 4441 | * If a server with the same name is found, reject the new one. |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4442 | */ |
Amaury Denoyelle | cece918 | 2021-04-20 17:09:08 +0200 | [diff] [blame] | 4443 | |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4444 | /* TODO use a double-linked list for px->srv */ |
| 4445 | if (be->srv) { |
Amaury Denoyelle | cece918 | 2021-04-20 17:09:08 +0200 | [diff] [blame] | 4446 | struct server *next = be->srv; |
| 4447 | |
| 4448 | while (1) { |
| 4449 | /* check for duplicate server */ |
| 4450 | if (!strcmp(srv->id, next->id)) { |
Amaury Denoyelle | cece918 | 2021-04-20 17:09:08 +0200 | [diff] [blame] | 4451 | cli_err(appctx, "Already exists a server with the same name in backend."); |
| 4452 | goto out; |
| 4453 | } |
| 4454 | |
| 4455 | if (!next->next) |
| 4456 | break; |
| 4457 | |
| 4458 | next = next->next; |
| 4459 | } |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4460 | |
| 4461 | next->next = srv; |
| 4462 | } |
| 4463 | else { |
| 4464 | srv->next = be->srv; |
| 4465 | be->srv = srv; |
| 4466 | } |
Amaury Denoyelle | cece918 | 2021-04-20 17:09:08 +0200 | [diff] [blame] | 4467 | |
Amaury Denoyelle | 1217356 | 2021-06-09 09:58:47 +0200 | [diff] [blame] | 4468 | /* generate the server id if not manually specified */ |
| 4469 | if (!srv->puid) { |
| 4470 | next_id = get_next_id(&be->conf.used_server_id, 1); |
| 4471 | if (!next_id) { |
| 4472 | ha_alert("Cannot attach server : no id left in proxy\n"); |
| 4473 | goto out; |
| 4474 | } |
| 4475 | |
| 4476 | srv->conf.id.key = srv->puid = next_id; |
| 4477 | srv->conf.name.key = srv->id; |
| 4478 | } |
| 4479 | |
| 4480 | /* insert the server in the backend trees */ |
Amaury Denoyelle | f88af88 | 2021-06-08 17:00:20 +0200 | [diff] [blame^] | 4481 | eb32_insert(&be->conf.used_server_id, &srv->conf.id); |
| 4482 | ebis_insert(&be->conf.used_server_name, &srv->conf.name); |
Amaury Denoyelle | 1217356 | 2021-06-09 09:58:47 +0200 | [diff] [blame] | 4483 | |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4484 | thread_release(); |
| 4485 | |
Amaury Denoyelle | d38e7fa | 2021-04-20 18:35:19 +0200 | [diff] [blame] | 4486 | ha_notice("New server %s/%s registered.\n", be->id, srv->id); |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4487 | cli_msg(appctx, LOG_INFO, "New server registered."); |
| 4488 | |
| 4489 | return 0; |
| 4490 | |
| 4491 | out: |
Amaury Denoyelle | d50d4bf | 2021-06-10 15:26:44 +0200 | [diff] [blame] | 4492 | thread_release(); |
Amaury Denoyelle | f99f77a | 2021-03-08 17:13:32 +0100 | [diff] [blame] | 4493 | if (srv) |
| 4494 | free_server(srv); |
| 4495 | return 1; |
| 4496 | } |
| 4497 | |
Amaury Denoyelle | e558043 | 2021-04-15 14:41:20 +0200 | [diff] [blame] | 4498 | /* Parse a "del server" command |
| 4499 | * Returns 0 if the server has been successfully initialized, 1 on failure. |
| 4500 | */ |
| 4501 | static int cli_parse_delete_server(char **args, char *payload, struct appctx *appctx, void *private) |
| 4502 | { |
| 4503 | struct proxy *be; |
| 4504 | struct server *srv; |
| 4505 | char *be_name, *sv_name; |
| 4506 | |
| 4507 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 4508 | return 1; |
| 4509 | |
| 4510 | ++args; |
| 4511 | |
| 4512 | sv_name = be_name = args[1]; |
| 4513 | /* split backend/server arg */ |
| 4514 | while (*sv_name && *(++sv_name)) { |
| 4515 | if (*sv_name == '/') { |
| 4516 | *sv_name = '\0'; |
| 4517 | ++sv_name; |
| 4518 | break; |
| 4519 | } |
| 4520 | } |
| 4521 | |
| 4522 | if (!*sv_name) |
| 4523 | return cli_err(appctx, "Require 'backend/server'."); |
| 4524 | |
| 4525 | /* The proxy servers list is currently not protected by a lock so this |
| 4526 | * requires thread isolation. |
| 4527 | */ |
| 4528 | |
| 4529 | /* WARNING there is maybe a potential violation of the thread isolation |
| 4530 | * mechanism by the pool allocator. The allocator marks the thread as |
| 4531 | * harmless before the allocation, but a processing outside of it could |
| 4532 | * relies on a particular server triggered at the same time by a |
| 4533 | * 'delete server'. Currently, it is unknown if such case is present in |
| 4534 | * the current code. If it happens to be, the thread isolation |
| 4535 | * mechanism should be improved, maybe with a differentiation between |
| 4536 | * read and read+write safe sections. |
| 4537 | */ |
| 4538 | thread_isolate(); |
| 4539 | |
| 4540 | get_backend_server(be_name, sv_name, &be, &srv); |
| 4541 | if (!be) { |
| 4542 | cli_err(appctx, "No such backend."); |
| 4543 | goto out; |
| 4544 | } |
| 4545 | |
| 4546 | if (!srv) { |
| 4547 | cli_err(appctx, "No such server."); |
| 4548 | goto out; |
| 4549 | } |
| 4550 | |
| 4551 | if (!(srv->flags & SRV_F_DYNAMIC)) { |
| 4552 | cli_err(appctx, "Only servers added at runtime via <add server> CLI cmd can be deleted."); |
| 4553 | goto out; |
| 4554 | } |
| 4555 | |
| 4556 | /* Only servers in maintenance can be deleted. This ensures that the |
| 4557 | * server is not present anymore in the lb structures (through |
| 4558 | * lbprm.set_server_status_down). |
| 4559 | */ |
| 4560 | if (!(srv->cur_admin & SRV_ADMF_MAINT)) { |
| 4561 | cli_err(appctx, "Only servers in maintenance mode can be deleted."); |
| 4562 | goto out; |
| 4563 | } |
| 4564 | |
| 4565 | /* Ensure that there is no active/idle/pending connection on the server. |
| 4566 | * |
| 4567 | * TODO idle connections should not prevent server deletion. A proper |
| 4568 | * cleanup function should be implemented to be used here. |
| 4569 | */ |
| 4570 | if (srv->cur_sess || srv->curr_idle_conns || |
| 4571 | !eb_is_empty(&srv->pendconns)) { |
| 4572 | cli_err(appctx, "Server still has connections attached to it, cannot remove it."); |
| 4573 | goto out; |
| 4574 | } |
| 4575 | |
| 4576 | /* TODO remove server for check list once 'check' will be implemented for |
| 4577 | * dynamic servers |
| 4578 | */ |
| 4579 | |
| 4580 | /* detach the server from the proxy linked list |
| 4581 | * The proxy servers list is currently not protected by a lock, so this |
| 4582 | * requires thread_isolate/release. |
| 4583 | */ |
| 4584 | |
| 4585 | /* be->srv cannot be empty since we have already found the server with |
| 4586 | * get_backend_server */ |
| 4587 | BUG_ON(!be->srv); |
| 4588 | if (be->srv == srv) { |
| 4589 | be->srv = srv->next; |
| 4590 | } |
| 4591 | else { |
| 4592 | struct server *next; |
Amaury Denoyelle | d6b4b6d | 2021-04-21 11:50:26 +0200 | [diff] [blame] | 4593 | for (next = be->srv; srv != next->next; next = next->next) { |
| 4594 | /* srv cannot be not found since we have already found |
| 4595 | * it with get_backend_server */ |
| 4596 | BUG_ON(!next); |
| 4597 | } |
Amaury Denoyelle | e558043 | 2021-04-15 14:41:20 +0200 | [diff] [blame] | 4598 | |
Amaury Denoyelle | e558043 | 2021-04-15 14:41:20 +0200 | [diff] [blame] | 4599 | next->next = srv->next; |
| 4600 | } |
| 4601 | |
| 4602 | /* remove srv from addr_node tree */ |
Amaury Denoyelle | 40ad9f4 | 2021-06-09 16:00:43 +0200 | [diff] [blame] | 4603 | eb32_delete(&srv->conf.id); |
| 4604 | ebpt_delete(&srv->conf.name); |
Amaury Denoyelle | e558043 | 2021-04-15 14:41:20 +0200 | [diff] [blame] | 4605 | ebpt_delete(&srv->addr_node); |
| 4606 | |
| 4607 | /* remove srv from idle_node tree for idle conn cleanup */ |
| 4608 | eb32_delete(&srv->idle_node); |
| 4609 | |
| 4610 | thread_release(); |
| 4611 | |
| 4612 | ha_notice("Server %s/%s deleted.\n", be->id, srv->id); |
| 4613 | free_server(srv); |
| 4614 | |
| 4615 | cli_msg(appctx, LOG_INFO, "Server deleted."); |
| 4616 | |
| 4617 | return 0; |
| 4618 | |
| 4619 | out: |
| 4620 | thread_release(); |
| 4621 | |
| 4622 | return 1; |
| 4623 | } |
| 4624 | |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 4625 | /* register cli keywords */ |
| 4626 | static struct cli_kw_list cli_kws = {{ },{ |
Willy Tarreau | b205bfd | 2021-05-07 11:38:37 +0200 | [diff] [blame] | 4627 | { { "disable", "agent", NULL }, "disable agent (DEPRECATED) : disable agent checks (use 'set server' instead)", cli_parse_disable_agent, NULL }, |
| 4628 | { { "disable", "health", NULL }, "disable health (DEPRECATED) : disable health checks (use 'set server' instead)", cli_parse_disable_health, NULL }, |
| 4629 | { { "disable", "server", NULL }, "disable server (DEPRECATED) : disable a server for maintenance (use 'set server' instead)", cli_parse_disable_server, NULL }, |
| 4630 | { { "enable", "agent", NULL }, "enable agent (DEPRECATED) : enable agent checks (use 'set server' instead)", cli_parse_enable_agent, NULL }, |
| 4631 | { { "enable", "health", NULL }, "enable health (DEPRECATED) : enable health checks (use 'set server' instead)", cli_parse_enable_health, NULL }, |
| 4632 | { { "enable", "server", NULL }, "enable server (DEPRECATED) : enable a disabled server (use 'set server' instead)", cli_parse_enable_server, NULL }, |
| 4633 | { { "set", "maxconn", "server", NULL }, "set maxconn server <bk>/<srv> : change a server's maxconn setting", cli_parse_set_maxconn_server, NULL }, |
| 4634 | { { "set", "server", NULL }, "set server <bk>/<srv> [opts] : change a server's state, weight, address or ssl", cli_parse_set_server }, |
| 4635 | { { "get", "weight", NULL }, "get weight <bk>/<srv> : report a server's current weight", cli_parse_get_weight }, |
| 4636 | { { "set", "weight", NULL }, "set weight <bk>/<srv> (DEPRECATED) : change a server's weight (use 'set server' instead)", cli_parse_set_weight }, |
| 4637 | { { "add", "server", NULL }, "add server <bk>/<srv> : create a new server (EXPERIMENTAL)", cli_parse_add_server, NULL, NULL, NULL, ACCESS_EXPERIMENTAL }, |
| 4638 | { { "del", "server", NULL }, "del server <bk>/<srv> : remove a dynamically added server (EXPERIMENTAL)", cli_parse_delete_server, NULL, NULL, NULL, ACCESS_EXPERIMENTAL }, |
William Lallemand | 222baf2 | 2016-11-19 02:00:33 +0100 | [diff] [blame] | 4639 | {{},} |
| 4640 | }}; |
| 4641 | |
Willy Tarreau | 0108d90 | 2018-11-25 19:14:37 +0100 | [diff] [blame] | 4642 | INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws); |
Baptiste Assmann | 83cbaa5 | 2016-11-02 15:34:05 +0100 | [diff] [blame] | 4643 | |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4644 | /* |
| 4645 | * This function applies server's status changes, it is |
| 4646 | * is designed to be called asynchronously. |
| 4647 | * |
Willy Tarreau | 1e690bb | 2020-10-22 11:30:59 +0200 | [diff] [blame] | 4648 | * Must be called with the server lock held. This may also be called at init |
| 4649 | * time as the result of parsing the state file, in which case no lock will be |
| 4650 | * held, and the server's warmup task can be null. |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4651 | */ |
Willy Tarreau | 3ff577e | 2018-08-02 11:48:52 +0200 | [diff] [blame] | 4652 | static void srv_update_status(struct server *s) |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4653 | { |
| 4654 | struct check *check = &s->check; |
| 4655 | int xferred; |
| 4656 | struct proxy *px = s->proxy; |
| 4657 | int prev_srv_count = s->proxy->srv_bck + s->proxy->srv_act; |
| 4658 | int srv_was_stopping = (s->cur_state == SRV_ST_STOPPING) || (s->cur_admin & SRV_ADMF_DRAIN); |
| 4659 | int log_level; |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 4660 | struct buffer *tmptrash = NULL; |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4661 | |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4662 | /* If currently main is not set we try to apply pending state changes */ |
| 4663 | if (!(s->cur_admin & SRV_ADMF_MAINT)) { |
| 4664 | int next_admin; |
| 4665 | |
| 4666 | /* Backup next admin */ |
| 4667 | next_admin = s->next_admin; |
| 4668 | |
| 4669 | /* restore current admin state */ |
| 4670 | s->next_admin = s->cur_admin; |
| 4671 | |
| 4672 | if ((s->cur_state != SRV_ST_STOPPED) && (s->next_state == SRV_ST_STOPPED)) { |
| 4673 | s->last_change = now.tv_sec; |
| 4674 | if (s->proxy->lbprm.set_server_status_down) |
| 4675 | s->proxy->lbprm.set_server_status_down(s); |
| 4676 | |
| 4677 | if (s->onmarkeddown & HANA_ONMARKEDDOWN_SHUTDOWNSESSIONS) |
| 4678 | srv_shutdown_streams(s, SF_ERR_DOWN); |
| 4679 | |
| 4680 | /* we might have streams queued on this server and waiting for |
| 4681 | * a connection. Those which are redispatchable will be queued |
| 4682 | * to another server or to the proxy itself. |
| 4683 | */ |
| 4684 | xferred = pendconn_redistribute(s); |
| 4685 | |
| 4686 | tmptrash = alloc_trash_chunk(); |
| 4687 | if (tmptrash) { |
| 4688 | chunk_printf(tmptrash, |
| 4689 | "%sServer %s/%s is DOWN", s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 4690 | s->proxy->id, s->id); |
| 4691 | |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 4692 | srv_append_status(tmptrash, s, NULL, xferred, 0); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 4693 | ha_warning("%s.\n", tmptrash->area); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4694 | |
| 4695 | /* we don't send an alert if the server was previously paused */ |
| 4696 | log_level = srv_was_stopping ? LOG_NOTICE : LOG_ALERT; |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 4697 | send_log(s->proxy, log_level, "%s.\n", |
| 4698 | tmptrash->area); |
| 4699 | send_email_alert(s, log_level, "%s", |
| 4700 | tmptrash->area); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4701 | free_trash_chunk(tmptrash); |
| 4702 | tmptrash = NULL; |
| 4703 | } |
| 4704 | if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) |
| 4705 | set_backend_down(s->proxy); |
| 4706 | |
| 4707 | s->counters.down_trans++; |
| 4708 | } |
| 4709 | else if ((s->cur_state != SRV_ST_STOPPING) && (s->next_state == SRV_ST_STOPPING)) { |
| 4710 | s->last_change = now.tv_sec; |
| 4711 | if (s->proxy->lbprm.set_server_status_down) |
| 4712 | s->proxy->lbprm.set_server_status_down(s); |
| 4713 | |
| 4714 | /* we might have streams queued on this server and waiting for |
| 4715 | * a connection. Those which are redispatchable will be queued |
| 4716 | * to another server or to the proxy itself. |
| 4717 | */ |
| 4718 | xferred = pendconn_redistribute(s); |
| 4719 | |
| 4720 | tmptrash = alloc_trash_chunk(); |
| 4721 | if (tmptrash) { |
| 4722 | chunk_printf(tmptrash, |
| 4723 | "%sServer %s/%s is stopping", s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 4724 | s->proxy->id, s->id); |
| 4725 | |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 4726 | srv_append_status(tmptrash, s, NULL, xferred, 0); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4727 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 4728 | ha_warning("%s.\n", tmptrash->area); |
| 4729 | send_log(s->proxy, LOG_NOTICE, "%s.\n", |
| 4730 | tmptrash->area); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4731 | free_trash_chunk(tmptrash); |
| 4732 | tmptrash = NULL; |
| 4733 | } |
| 4734 | |
| 4735 | if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) |
| 4736 | set_backend_down(s->proxy); |
| 4737 | } |
| 4738 | else if (((s->cur_state != SRV_ST_RUNNING) && (s->next_state == SRV_ST_RUNNING)) |
| 4739 | || ((s->cur_state != SRV_ST_STARTING) && (s->next_state == SRV_ST_STARTING))) { |
| 4740 | if (s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) { |
| 4741 | if (s->proxy->last_change < now.tv_sec) // ignore negative times |
| 4742 | s->proxy->down_time += now.tv_sec - s->proxy->last_change; |
| 4743 | s->proxy->last_change = now.tv_sec; |
| 4744 | } |
| 4745 | |
Amaury Denoyelle | fe2bf09 | 2020-10-29 15:59:04 +0100 | [diff] [blame] | 4746 | if (s->cur_state == SRV_ST_STOPPED && s->last_change < now.tv_sec) // ignore negative times |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4747 | s->down_time += now.tv_sec - s->last_change; |
| 4748 | |
| 4749 | s->last_change = now.tv_sec; |
Willy Tarreau | 1e690bb | 2020-10-22 11:30:59 +0200 | [diff] [blame] | 4750 | if (s->next_state == SRV_ST_STARTING && s->warmup) |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4751 | task_schedule(s->warmup, tick_add(now_ms, MS_TO_TICKS(MAX(1000, s->slowstart / 20)))); |
| 4752 | |
Willy Tarreau | 3ff577e | 2018-08-02 11:48:52 +0200 | [diff] [blame] | 4753 | server_recalc_eweight(s, 0); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4754 | /* now propagate the status change to any LB algorithms */ |
| 4755 | if (px->lbprm.update_server_eweight) |
| 4756 | px->lbprm.update_server_eweight(s); |
| 4757 | else if (srv_willbe_usable(s)) { |
| 4758 | if (px->lbprm.set_server_status_up) |
| 4759 | px->lbprm.set_server_status_up(s); |
| 4760 | } |
| 4761 | else { |
| 4762 | if (px->lbprm.set_server_status_down) |
| 4763 | px->lbprm.set_server_status_down(s); |
| 4764 | } |
| 4765 | |
| 4766 | /* If the server is set with "on-marked-up shutdown-backup-sessions", |
| 4767 | * and it's not a backup server and its effective weight is > 0, |
| 4768 | * then it can accept new connections, so we shut down all streams |
| 4769 | * on all backup servers. |
| 4770 | */ |
| 4771 | if ((s->onmarkedup & HANA_ONMARKEDUP_SHUTDOWNBACKUPSESSIONS) && |
| 4772 | !(s->flags & SRV_F_BACKUP) && s->next_eweight) |
| 4773 | srv_shutdown_backup_streams(s->proxy, SF_ERR_UP); |
| 4774 | |
| 4775 | /* check if we can handle some connections queued at the proxy. We |
| 4776 | * will take as many as we can handle. |
| 4777 | */ |
| 4778 | xferred = pendconn_grab_from_px(s); |
| 4779 | |
| 4780 | tmptrash = alloc_trash_chunk(); |
| 4781 | if (tmptrash) { |
| 4782 | chunk_printf(tmptrash, |
| 4783 | "%sServer %s/%s is UP", s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 4784 | s->proxy->id, s->id); |
| 4785 | |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 4786 | srv_append_status(tmptrash, s, NULL, xferred, 0); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 4787 | ha_warning("%s.\n", tmptrash->area); |
| 4788 | send_log(s->proxy, LOG_NOTICE, "%s.\n", |
| 4789 | tmptrash->area); |
| 4790 | send_email_alert(s, LOG_NOTICE, "%s", |
| 4791 | tmptrash->area); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4792 | free_trash_chunk(tmptrash); |
| 4793 | tmptrash = NULL; |
| 4794 | } |
| 4795 | |
| 4796 | if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) |
| 4797 | set_backend_down(s->proxy); |
| 4798 | } |
| 4799 | else if (s->cur_eweight != s->next_eweight) { |
| 4800 | /* now propagate the status change to any LB algorithms */ |
| 4801 | if (px->lbprm.update_server_eweight) |
| 4802 | px->lbprm.update_server_eweight(s); |
| 4803 | else if (srv_willbe_usable(s)) { |
| 4804 | if (px->lbprm.set_server_status_up) |
| 4805 | px->lbprm.set_server_status_up(s); |
| 4806 | } |
| 4807 | else { |
| 4808 | if (px->lbprm.set_server_status_down) |
| 4809 | px->lbprm.set_server_status_down(s); |
| 4810 | } |
| 4811 | |
| 4812 | if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) |
| 4813 | set_backend_down(s->proxy); |
| 4814 | } |
| 4815 | |
| 4816 | s->next_admin = next_admin; |
| 4817 | } |
| 4818 | |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 4819 | /* reset operational state change */ |
| 4820 | *s->op_st_chg.reason = 0; |
| 4821 | s->op_st_chg.status = s->op_st_chg.code = -1; |
| 4822 | s->op_st_chg.duration = 0; |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4823 | |
| 4824 | /* Now we try to apply pending admin changes */ |
| 4825 | |
| 4826 | /* Maintenance must also disable health checks */ |
| 4827 | if (!(s->cur_admin & SRV_ADMF_MAINT) && (s->next_admin & SRV_ADMF_MAINT)) { |
| 4828 | if (s->check.state & CHK_ST_ENABLED) { |
| 4829 | s->check.state |= CHK_ST_PAUSED; |
| 4830 | check->health = 0; |
| 4831 | } |
| 4832 | |
| 4833 | if (s->cur_state == SRV_ST_STOPPED) { /* server was already down */ |
Olivier Houchard | 796a2b3 | 2017-10-24 17:42:47 +0200 | [diff] [blame] | 4834 | tmptrash = alloc_trash_chunk(); |
| 4835 | if (tmptrash) { |
| 4836 | chunk_printf(tmptrash, |
| 4837 | "%sServer %s/%s was DOWN and now enters maintenance%s%s%s", |
| 4838 | s->flags & SRV_F_BACKUP ? "Backup " : "", s->proxy->id, s->id, |
| 4839 | *(s->adm_st_chg_cause) ? " (" : "", s->adm_st_chg_cause, *(s->adm_st_chg_cause) ? ")" : ""); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4840 | |
Olivier Houchard | 796a2b3 | 2017-10-24 17:42:47 +0200 | [diff] [blame] | 4841 | srv_append_status(tmptrash, s, NULL, -1, (s->next_admin & SRV_ADMF_FMAINT)); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4842 | |
Olivier Houchard | 796a2b3 | 2017-10-24 17:42:47 +0200 | [diff] [blame] | 4843 | if (!(global.mode & MODE_STARTING)) { |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 4844 | ha_warning("%s.\n", tmptrash->area); |
| 4845 | send_log(s->proxy, LOG_NOTICE, "%s.\n", |
| 4846 | tmptrash->area); |
Olivier Houchard | 796a2b3 | 2017-10-24 17:42:47 +0200 | [diff] [blame] | 4847 | } |
| 4848 | free_trash_chunk(tmptrash); |
| 4849 | tmptrash = NULL; |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4850 | } |
Emeric Brun | 8f29829 | 2017-12-06 16:47:17 +0100 | [diff] [blame] | 4851 | /* commit new admin status */ |
| 4852 | |
| 4853 | s->cur_admin = s->next_admin; |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4854 | } |
| 4855 | else { /* server was still running */ |
| 4856 | check->health = 0; /* failure */ |
| 4857 | s->last_change = now.tv_sec; |
Emeric Brun | e311480 | 2017-12-21 14:42:26 +0100 | [diff] [blame] | 4858 | |
| 4859 | s->next_state = SRV_ST_STOPPED; |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4860 | if (s->proxy->lbprm.set_server_status_down) |
| 4861 | s->proxy->lbprm.set_server_status_down(s); |
| 4862 | |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4863 | if (s->onmarkeddown & HANA_ONMARKEDDOWN_SHUTDOWNSESSIONS) |
| 4864 | srv_shutdown_streams(s, SF_ERR_DOWN); |
| 4865 | |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 4866 | /* force connection cleanup on the given server */ |
| 4867 | srv_cleanup_connections(s); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4868 | /* we might have streams queued on this server and waiting for |
| 4869 | * a connection. Those which are redispatchable will be queued |
| 4870 | * to another server or to the proxy itself. |
| 4871 | */ |
| 4872 | xferred = pendconn_redistribute(s); |
| 4873 | |
| 4874 | tmptrash = alloc_trash_chunk(); |
| 4875 | if (tmptrash) { |
| 4876 | chunk_printf(tmptrash, |
| 4877 | "%sServer %s/%s is going DOWN for maintenance%s%s%s", |
| 4878 | s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 4879 | s->proxy->id, s->id, |
| 4880 | *(s->adm_st_chg_cause) ? " (" : "", s->adm_st_chg_cause, *(s->adm_st_chg_cause) ? ")" : ""); |
| 4881 | |
| 4882 | srv_append_status(tmptrash, s, NULL, xferred, (s->next_admin & SRV_ADMF_FMAINT)); |
| 4883 | |
| 4884 | if (!(global.mode & MODE_STARTING)) { |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 4885 | ha_warning("%s.\n", tmptrash->area); |
| 4886 | send_log(s->proxy, srv_was_stopping ? LOG_NOTICE : LOG_ALERT, "%s.\n", |
| 4887 | tmptrash->area); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4888 | } |
| 4889 | free_trash_chunk(tmptrash); |
| 4890 | tmptrash = NULL; |
| 4891 | } |
| 4892 | if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) |
| 4893 | set_backend_down(s->proxy); |
| 4894 | |
| 4895 | s->counters.down_trans++; |
| 4896 | } |
| 4897 | } |
| 4898 | else if ((s->cur_admin & SRV_ADMF_MAINT) && !(s->next_admin & SRV_ADMF_MAINT)) { |
| 4899 | /* OK here we're leaving maintenance, we have many things to check, |
| 4900 | * because the server might possibly be coming back up depending on |
| 4901 | * its state. In practice, leaving maintenance means that we should |
| 4902 | * immediately turn to UP (more or less the slowstart) under the |
| 4903 | * following conditions : |
| 4904 | * - server is neither checked nor tracked |
| 4905 | * - server tracks another server which is not checked |
| 4906 | * - server tracks another server which is already up |
| 4907 | * Which sums up as something simpler : |
| 4908 | * "either the tracking server is up or the server's checks are disabled |
| 4909 | * or up". Otherwise we only re-enable health checks. There's a special |
| 4910 | * case associated to the stopping state which can be inherited. Note |
| 4911 | * that the server might still be in drain mode, which is naturally dealt |
| 4912 | * with by the lower level functions. |
| 4913 | */ |
| 4914 | |
| 4915 | if (s->check.state & CHK_ST_ENABLED) { |
| 4916 | s->check.state &= ~CHK_ST_PAUSED; |
| 4917 | check->health = check->rise; /* start OK but check immediately */ |
| 4918 | } |
| 4919 | |
| 4920 | if ((!s->track || s->track->next_state != SRV_ST_STOPPED) && |
| 4921 | (!(s->agent.state & CHK_ST_ENABLED) || (s->agent.health >= s->agent.rise)) && |
| 4922 | (!(s->check.state & CHK_ST_ENABLED) || (s->check.health >= s->check.rise))) { |
| 4923 | if (s->track && s->track->next_state == SRV_ST_STOPPING) { |
| 4924 | s->next_state = SRV_ST_STOPPING; |
| 4925 | } |
| 4926 | else { |
| 4927 | s->next_state = SRV_ST_STARTING; |
Willy Tarreau | 1e690bb | 2020-10-22 11:30:59 +0200 | [diff] [blame] | 4928 | if (s->slowstart > 0) { |
| 4929 | if (s->warmup) |
| 4930 | task_schedule(s->warmup, tick_add(now_ms, MS_TO_TICKS(MAX(1000, s->slowstart / 20)))); |
| 4931 | } |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4932 | else |
| 4933 | s->next_state = SRV_ST_RUNNING; |
| 4934 | } |
| 4935 | |
| 4936 | } |
| 4937 | |
| 4938 | tmptrash = alloc_trash_chunk(); |
| 4939 | if (tmptrash) { |
| 4940 | if (!(s->next_admin & SRV_ADMF_FMAINT) && (s->cur_admin & SRV_ADMF_FMAINT)) { |
| 4941 | chunk_printf(tmptrash, |
| 4942 | "%sServer %s/%s is %s/%s (leaving forced maintenance)", |
| 4943 | s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 4944 | s->proxy->id, s->id, |
| 4945 | (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP", |
| 4946 | (s->next_admin & SRV_ADMF_DRAIN) ? "DRAIN" : "READY"); |
| 4947 | } |
| 4948 | if (!(s->next_admin & SRV_ADMF_RMAINT) && (s->cur_admin & SRV_ADMF_RMAINT)) { |
| 4949 | chunk_printf(tmptrash, |
| 4950 | "%sServer %s/%s ('%s') is %s/%s (resolves again)", |
| 4951 | s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 4952 | s->proxy->id, s->id, s->hostname, |
| 4953 | (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP", |
| 4954 | (s->next_admin & SRV_ADMF_DRAIN) ? "DRAIN" : "READY"); |
| 4955 | } |
| 4956 | if (!(s->next_admin & SRV_ADMF_IMAINT) && (s->cur_admin & SRV_ADMF_IMAINT)) { |
| 4957 | chunk_printf(tmptrash, |
| 4958 | "%sServer %s/%s is %s/%s (leaving maintenance)", |
| 4959 | s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 4960 | s->proxy->id, s->id, |
| 4961 | (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP", |
| 4962 | (s->next_admin & SRV_ADMF_DRAIN) ? "DRAIN" : "READY"); |
| 4963 | } |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 4964 | ha_warning("%s.\n", tmptrash->area); |
| 4965 | send_log(s->proxy, LOG_NOTICE, "%s.\n", |
| 4966 | tmptrash->area); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4967 | free_trash_chunk(tmptrash); |
| 4968 | tmptrash = NULL; |
| 4969 | } |
| 4970 | |
Willy Tarreau | 3ff577e | 2018-08-02 11:48:52 +0200 | [diff] [blame] | 4971 | server_recalc_eweight(s, 0); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 4972 | /* now propagate the status change to any LB algorithms */ |
| 4973 | if (px->lbprm.update_server_eweight) |
| 4974 | px->lbprm.update_server_eweight(s); |
| 4975 | else if (srv_willbe_usable(s)) { |
| 4976 | if (px->lbprm.set_server_status_up) |
| 4977 | px->lbprm.set_server_status_up(s); |
| 4978 | } |
| 4979 | else { |
| 4980 | if (px->lbprm.set_server_status_down) |
| 4981 | px->lbprm.set_server_status_down(s); |
| 4982 | } |
| 4983 | |
| 4984 | if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) |
| 4985 | set_backend_down(s->proxy); |
| 4986 | |
Willy Tarreau | 6a78e61 | 2018-08-07 10:14:53 +0200 | [diff] [blame] | 4987 | /* If the server is set with "on-marked-up shutdown-backup-sessions", |
| 4988 | * and it's not a backup server and its effective weight is > 0, |
| 4989 | * then it can accept new connections, so we shut down all streams |
| 4990 | * on all backup servers. |
| 4991 | */ |
| 4992 | if ((s->onmarkedup & HANA_ONMARKEDUP_SHUTDOWNBACKUPSESSIONS) && |
| 4993 | !(s->flags & SRV_F_BACKUP) && s->next_eweight) |
| 4994 | srv_shutdown_backup_streams(s->proxy, SF_ERR_UP); |
| 4995 | |
| 4996 | /* check if we can handle some connections queued at the proxy. We |
| 4997 | * will take as many as we can handle. |
| 4998 | */ |
| 4999 | xferred = pendconn_grab_from_px(s); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 5000 | } |
| 5001 | else if (s->next_admin & SRV_ADMF_MAINT) { |
| 5002 | /* remaining in maintenance mode, let's inform precisely about the |
| 5003 | * situation. |
| 5004 | */ |
| 5005 | if (!(s->next_admin & SRV_ADMF_FMAINT) && (s->cur_admin & SRV_ADMF_FMAINT)) { |
| 5006 | tmptrash = alloc_trash_chunk(); |
| 5007 | if (tmptrash) { |
| 5008 | chunk_printf(tmptrash, |
| 5009 | "%sServer %s/%s is leaving forced maintenance but remains in maintenance", |
| 5010 | s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 5011 | s->proxy->id, s->id); |
| 5012 | |
| 5013 | if (s->track) /* normally it's mandatory here */ |
| 5014 | chunk_appendf(tmptrash, " via %s/%s", |
| 5015 | s->track->proxy->id, s->track->id); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 5016 | ha_warning("%s.\n", tmptrash->area); |
| 5017 | send_log(s->proxy, LOG_NOTICE, "%s.\n", |
| 5018 | tmptrash->area); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 5019 | free_trash_chunk(tmptrash); |
| 5020 | tmptrash = NULL; |
| 5021 | } |
| 5022 | } |
| 5023 | if (!(s->next_admin & SRV_ADMF_RMAINT) && (s->cur_admin & SRV_ADMF_RMAINT)) { |
| 5024 | tmptrash = alloc_trash_chunk(); |
| 5025 | if (tmptrash) { |
| 5026 | chunk_printf(tmptrash, |
| 5027 | "%sServer %s/%s ('%s') resolves again but remains in maintenance", |
| 5028 | s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 5029 | s->proxy->id, s->id, s->hostname); |
| 5030 | |
| 5031 | if (s->track) /* normally it's mandatory here */ |
| 5032 | chunk_appendf(tmptrash, " via %s/%s", |
| 5033 | s->track->proxy->id, s->track->id); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 5034 | ha_warning("%s.\n", tmptrash->area); |
| 5035 | send_log(s->proxy, LOG_NOTICE, "%s.\n", |
| 5036 | tmptrash->area); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 5037 | free_trash_chunk(tmptrash); |
| 5038 | tmptrash = NULL; |
| 5039 | } |
| 5040 | } |
| 5041 | else if (!(s->next_admin & SRV_ADMF_IMAINT) && (s->cur_admin & SRV_ADMF_IMAINT)) { |
| 5042 | tmptrash = alloc_trash_chunk(); |
| 5043 | if (tmptrash) { |
| 5044 | chunk_printf(tmptrash, |
| 5045 | "%sServer %s/%s remains in forced maintenance", |
| 5046 | s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 5047 | s->proxy->id, s->id); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 5048 | ha_warning("%s.\n", tmptrash->area); |
| 5049 | send_log(s->proxy, LOG_NOTICE, "%s.\n", |
| 5050 | tmptrash->area); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 5051 | free_trash_chunk(tmptrash); |
| 5052 | tmptrash = NULL; |
| 5053 | } |
| 5054 | } |
| 5055 | /* don't report anything when leaving drain mode and remaining in maintenance */ |
| 5056 | |
| 5057 | s->cur_admin = s->next_admin; |
| 5058 | } |
| 5059 | |
| 5060 | if (!(s->next_admin & SRV_ADMF_MAINT)) { |
| 5061 | if (!(s->cur_admin & SRV_ADMF_DRAIN) && (s->next_admin & SRV_ADMF_DRAIN)) { |
| 5062 | /* drain state is applied only if not yet in maint */ |
| 5063 | |
| 5064 | s->last_change = now.tv_sec; |
| 5065 | if (px->lbprm.set_server_status_down) |
| 5066 | px->lbprm.set_server_status_down(s); |
| 5067 | |
| 5068 | /* we might have streams queued on this server and waiting for |
| 5069 | * a connection. Those which are redispatchable will be queued |
| 5070 | * to another server or to the proxy itself. |
| 5071 | */ |
| 5072 | xferred = pendconn_redistribute(s); |
| 5073 | |
| 5074 | tmptrash = alloc_trash_chunk(); |
| 5075 | if (tmptrash) { |
| 5076 | chunk_printf(tmptrash, "%sServer %s/%s enters drain state%s%s%s", |
| 5077 | s->flags & SRV_F_BACKUP ? "Backup " : "", s->proxy->id, s->id, |
| 5078 | *(s->adm_st_chg_cause) ? " (" : "", s->adm_st_chg_cause, *(s->adm_st_chg_cause) ? ")" : ""); |
| 5079 | |
| 5080 | srv_append_status(tmptrash, s, NULL, xferred, (s->next_admin & SRV_ADMF_FDRAIN)); |
| 5081 | |
| 5082 | if (!(global.mode & MODE_STARTING)) { |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 5083 | ha_warning("%s.\n", tmptrash->area); |
| 5084 | send_log(s->proxy, LOG_NOTICE, "%s.\n", |
| 5085 | tmptrash->area); |
| 5086 | send_email_alert(s, LOG_NOTICE, "%s", |
| 5087 | tmptrash->area); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 5088 | } |
| 5089 | free_trash_chunk(tmptrash); |
| 5090 | tmptrash = NULL; |
| 5091 | } |
| 5092 | |
| 5093 | if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) |
| 5094 | set_backend_down(s->proxy); |
| 5095 | } |
| 5096 | else if ((s->cur_admin & SRV_ADMF_DRAIN) && !(s->next_admin & SRV_ADMF_DRAIN)) { |
| 5097 | /* OK completely leaving drain mode */ |
| 5098 | if (s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) { |
| 5099 | if (s->proxy->last_change < now.tv_sec) // ignore negative times |
| 5100 | s->proxy->down_time += now.tv_sec - s->proxy->last_change; |
| 5101 | s->proxy->last_change = now.tv_sec; |
| 5102 | } |
| 5103 | |
| 5104 | if (s->last_change < now.tv_sec) // ignore negative times |
| 5105 | s->down_time += now.tv_sec - s->last_change; |
| 5106 | s->last_change = now.tv_sec; |
Willy Tarreau | 3ff577e | 2018-08-02 11:48:52 +0200 | [diff] [blame] | 5107 | server_recalc_eweight(s, 0); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 5108 | |
| 5109 | tmptrash = alloc_trash_chunk(); |
| 5110 | if (tmptrash) { |
| 5111 | if (!(s->next_admin & SRV_ADMF_FDRAIN)) { |
| 5112 | chunk_printf(tmptrash, |
| 5113 | "%sServer %s/%s is %s (leaving forced drain)", |
| 5114 | s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 5115 | s->proxy->id, s->id, |
| 5116 | (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP"); |
| 5117 | } |
| 5118 | else { |
| 5119 | chunk_printf(tmptrash, |
| 5120 | "%sServer %s/%s is %s (leaving drain)", |
| 5121 | s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 5122 | s->proxy->id, s->id, |
| 5123 | (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP"); |
| 5124 | if (s->track) /* normally it's mandatory here */ |
| 5125 | chunk_appendf(tmptrash, " via %s/%s", |
| 5126 | s->track->proxy->id, s->track->id); |
| 5127 | } |
| 5128 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 5129 | ha_warning("%s.\n", tmptrash->area); |
| 5130 | send_log(s->proxy, LOG_NOTICE, "%s.\n", |
| 5131 | tmptrash->area); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 5132 | free_trash_chunk(tmptrash); |
| 5133 | tmptrash = NULL; |
| 5134 | } |
| 5135 | |
| 5136 | /* now propagate the status change to any LB algorithms */ |
| 5137 | if (px->lbprm.update_server_eweight) |
| 5138 | px->lbprm.update_server_eweight(s); |
| 5139 | else if (srv_willbe_usable(s)) { |
| 5140 | if (px->lbprm.set_server_status_up) |
| 5141 | px->lbprm.set_server_status_up(s); |
| 5142 | } |
| 5143 | else { |
| 5144 | if (px->lbprm.set_server_status_down) |
| 5145 | px->lbprm.set_server_status_down(s); |
| 5146 | } |
| 5147 | } |
| 5148 | else if ((s->next_admin & SRV_ADMF_DRAIN)) { |
| 5149 | /* remaining in drain mode after removing one of its flags */ |
| 5150 | |
| 5151 | tmptrash = alloc_trash_chunk(); |
| 5152 | if (tmptrash) { |
| 5153 | if (!(s->next_admin & SRV_ADMF_FDRAIN)) { |
| 5154 | chunk_printf(tmptrash, |
| 5155 | "%sServer %s/%s is leaving forced drain but remains in drain mode", |
| 5156 | s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 5157 | s->proxy->id, s->id); |
| 5158 | |
| 5159 | if (s->track) /* normally it's mandatory here */ |
| 5160 | chunk_appendf(tmptrash, " via %s/%s", |
| 5161 | s->track->proxy->id, s->track->id); |
| 5162 | } |
| 5163 | else { |
| 5164 | chunk_printf(tmptrash, |
| 5165 | "%sServer %s/%s remains in forced drain mode", |
| 5166 | s->flags & SRV_F_BACKUP ? "Backup " : "", |
| 5167 | s->proxy->id, s->id); |
| 5168 | } |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 5169 | ha_warning("%s.\n", tmptrash->area); |
| 5170 | send_log(s->proxy, LOG_NOTICE, "%s.\n", |
| 5171 | tmptrash->area); |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 5172 | free_trash_chunk(tmptrash); |
| 5173 | tmptrash = NULL; |
| 5174 | } |
| 5175 | |
| 5176 | /* commit new admin status */ |
| 5177 | |
| 5178 | s->cur_admin = s->next_admin; |
| 5179 | } |
| 5180 | } |
| 5181 | |
| 5182 | /* Re-set log strings to empty */ |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 5183 | *s->adm_st_chg_cause = 0; |
| 5184 | } |
Emeric Brun | 64cc49c | 2017-10-03 14:46:45 +0200 | [diff] [blame] | 5185 | |
Willy Tarreau | 144f84a | 2021-03-02 16:09:26 +0100 | [diff] [blame] | 5186 | struct task *srv_cleanup_toremove_conns(struct task *task, void *context, unsigned int state) |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5187 | { |
| 5188 | struct connection *conn; |
| 5189 | |
Willy Tarreau | 4d82bf5 | 2020-06-28 00:19:17 +0200 | [diff] [blame] | 5190 | while ((conn = MT_LIST_POP(&idle_conns[tid].toremove_conns, |
Amaury Denoyelle | f232cb3 | 2021-01-06 16:14:12 +0100 | [diff] [blame] | 5191 | struct connection *, toremove_list)) != NULL) { |
Christopher Faulet | 73c1207 | 2019-04-08 11:23:22 +0200 | [diff] [blame] | 5192 | conn->mux->destroy(conn->ctx); |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5193 | } |
| 5194 | |
| 5195 | return task; |
| 5196 | } |
| 5197 | |
Amaury Denoyelle | f232cb3 | 2021-01-06 16:14:12 +0100 | [diff] [blame] | 5198 | /* Move toremove_nb connections from idle_tree to toremove_list, -1 means |
Olivier Houchard | ff1d092 | 2020-06-29 20:15:59 +0200 | [diff] [blame] | 5199 | * moving them all. |
| 5200 | * Returns the number of connections moved. |
Amaury Denoyelle | 5c7086f | 2021-01-11 09:21:52 +0100 | [diff] [blame] | 5201 | * |
| 5202 | * Must be called with idle_conns_lock held. |
Olivier Houchard | ff1d092 | 2020-06-29 20:15:59 +0200 | [diff] [blame] | 5203 | */ |
Amaury Denoyelle | f232cb3 | 2021-01-06 16:14:12 +0100 | [diff] [blame] | 5204 | static int srv_migrate_conns_to_remove(struct eb_root *idle_tree, struct mt_list *toremove_list, int toremove_nb) |
Olivier Houchard | ff1d092 | 2020-06-29 20:15:59 +0200 | [diff] [blame] | 5205 | { |
Amaury Denoyelle | f232cb3 | 2021-01-06 16:14:12 +0100 | [diff] [blame] | 5206 | struct eb_node *node, *next; |
Amaury Denoyelle | 8990b01 | 2021-02-19 15:29:16 +0100 | [diff] [blame] | 5207 | struct conn_hash_node *hash_node; |
Olivier Houchard | ff1d092 | 2020-06-29 20:15:59 +0200 | [diff] [blame] | 5208 | int i = 0; |
| 5209 | |
Amaury Denoyelle | f232cb3 | 2021-01-06 16:14:12 +0100 | [diff] [blame] | 5210 | node = eb_first(idle_tree); |
| 5211 | while (node) { |
| 5212 | next = eb_next(node); |
Olivier Houchard | ff1d092 | 2020-06-29 20:15:59 +0200 | [diff] [blame] | 5213 | if (toremove_nb != -1 && i >= toremove_nb) |
| 5214 | break; |
Amaury Denoyelle | f232cb3 | 2021-01-06 16:14:12 +0100 | [diff] [blame] | 5215 | |
Amaury Denoyelle | 8990b01 | 2021-02-19 15:29:16 +0100 | [diff] [blame] | 5216 | hash_node = ebmb_entry(node, struct conn_hash_node, node); |
Amaury Denoyelle | f232cb3 | 2021-01-06 16:14:12 +0100 | [diff] [blame] | 5217 | eb_delete(node); |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 5218 | MT_LIST_APPEND(toremove_list, &hash_node->conn->toremove_list); |
Olivier Houchard | ff1d092 | 2020-06-29 20:15:59 +0200 | [diff] [blame] | 5219 | i++; |
Amaury Denoyelle | f232cb3 | 2021-01-06 16:14:12 +0100 | [diff] [blame] | 5220 | |
| 5221 | node = next; |
Olivier Houchard | ff1d092 | 2020-06-29 20:15:59 +0200 | [diff] [blame] | 5222 | } |
| 5223 | return i; |
| 5224 | } |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 5225 | /* cleanup connections for a given server |
| 5226 | * might be useful when going on forced maintenance or live changing ip/port |
| 5227 | */ |
William Dauchy | 707ad32 | 2020-05-04 13:52:40 +0200 | [diff] [blame] | 5228 | static void srv_cleanup_connections(struct server *srv) |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 5229 | { |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 5230 | int did_remove; |
| 5231 | int i; |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 5232 | |
Amaury Denoyelle | 10d5c31 | 2021-01-06 14:28:51 +0100 | [diff] [blame] | 5233 | /* nothing to do if pool-max-conn is null */ |
| 5234 | if (!srv->max_idle_conns) |
| 5235 | return; |
| 5236 | |
Willy Tarreau | c35bcfc | 2020-06-29 14:43:16 +0200 | [diff] [blame] | 5237 | /* check all threads starting with ours */ |
Willy Tarreau | c35bcfc | 2020-06-29 14:43:16 +0200 | [diff] [blame] | 5238 | for (i = tid;;) { |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 5239 | did_remove = 0; |
Amaury Denoyelle | 5c7086f | 2021-01-11 09:21:52 +0100 | [diff] [blame] | 5240 | HA_SPIN_LOCK(IDLE_CONNS_LOCK, &idle_conns[i].idle_conns_lock); |
Willy Tarreau | 430bf4a | 2021-03-04 09:45:32 +0100 | [diff] [blame] | 5241 | if (srv_migrate_conns_to_remove(&srv->per_thr[i].idle_conns, &idle_conns[i].toremove_conns, -1) > 0) |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 5242 | did_remove = 1; |
Willy Tarreau | 430bf4a | 2021-03-04 09:45:32 +0100 | [diff] [blame] | 5243 | if (srv_migrate_conns_to_remove(&srv->per_thr[i].safe_conns, &idle_conns[i].toremove_conns, -1) > 0) |
Olivier Houchard | ff1d092 | 2020-06-29 20:15:59 +0200 | [diff] [blame] | 5244 | did_remove = 1; |
Amaury Denoyelle | 5c7086f | 2021-01-11 09:21:52 +0100 | [diff] [blame] | 5245 | HA_SPIN_UNLOCK(IDLE_CONNS_LOCK, &idle_conns[i].idle_conns_lock); |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 5246 | if (did_remove) |
Willy Tarreau | 4d82bf5 | 2020-06-28 00:19:17 +0200 | [diff] [blame] | 5247 | task_wakeup(idle_conns[i].cleanup_task, TASK_WOKEN_OTHER); |
Willy Tarreau | c35bcfc | 2020-06-29 14:43:16 +0200 | [diff] [blame] | 5248 | |
| 5249 | if ((i = ((i + 1 == global.nbthread) ? 0 : i + 1)) == tid) |
| 5250 | break; |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 5251 | } |
William Dauchy | 6318d33 | 2020-05-02 21:52:36 +0200 | [diff] [blame] | 5252 | } |
| 5253 | |
Willy Tarreau | 144f84a | 2021-03-02 16:09:26 +0100 | [diff] [blame] | 5254 | struct task *srv_cleanup_idle_conns(struct task *task, void *context, unsigned int state) |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 5255 | { |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5256 | struct server *srv; |
| 5257 | struct eb32_node *eb; |
| 5258 | int i; |
| 5259 | unsigned int next_wakeup; |
Olivier Houchard | b7b3faa | 2018-12-14 18:15:36 +0100 | [diff] [blame] | 5260 | |
Willy Tarreau | 21b9ff5 | 2020-11-05 09:12:20 +0100 | [diff] [blame] | 5261 | next_wakeup = TICK_ETERNITY; |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5262 | HA_SPIN_LOCK(OTHER_LOCK, &idle_conn_srv_lock); |
| 5263 | while (1) { |
Olivier Houchard | 079cb9a | 2020-03-30 00:23:57 +0200 | [diff] [blame] | 5264 | int exceed_conns; |
| 5265 | int to_kill; |
| 5266 | int curr_idle; |
Olivier Houchard | b7b3faa | 2018-12-14 18:15:36 +0100 | [diff] [blame] | 5267 | |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5268 | eb = eb32_lookup_ge(&idle_conn_srv, now_ms - TIMER_LOOK_BACK); |
| 5269 | if (!eb) { |
| 5270 | /* we might have reached the end of the tree, typically because |
| 5271 | * <now_ms> is in the first half and we're first scanning the last |
| 5272 | * half. Let's loop back to the beginning of the tree now. |
| 5273 | */ |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 5274 | |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5275 | eb = eb32_first(&idle_conn_srv); |
| 5276 | if (likely(!eb)) |
| 5277 | break; |
| 5278 | } |
| 5279 | if (tick_is_lt(now_ms, eb->key)) { |
| 5280 | /* timer not expired yet, revisit it later */ |
| 5281 | next_wakeup = eb->key; |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 5282 | break; |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5283 | } |
| 5284 | srv = eb32_entry(eb, struct server, idle_node); |
Olivier Houchard | 079cb9a | 2020-03-30 00:23:57 +0200 | [diff] [blame] | 5285 | |
| 5286 | /* Calculate how many idle connections we want to kill : |
| 5287 | * we want to remove half the difference between the total |
| 5288 | * of established connections (used or idle) and the max |
| 5289 | * number of used connections. |
| 5290 | */ |
| 5291 | curr_idle = srv->curr_idle_conns; |
| 5292 | if (curr_idle == 0) |
| 5293 | goto remove; |
Willy Tarreau | bdb86bd | 2020-06-29 15:56:35 +0200 | [diff] [blame] | 5294 | exceed_conns = srv->curr_used_conns + curr_idle - MAX(srv->max_used_conns, srv->est_need_conns); |
Olivier Houchard | 079cb9a | 2020-03-30 00:23:57 +0200 | [diff] [blame] | 5295 | exceed_conns = to_kill = exceed_conns / 2 + (exceed_conns & 1); |
Willy Tarreau | bdb86bd | 2020-06-29 15:56:35 +0200 | [diff] [blame] | 5296 | |
Willy Tarreau | 21b9ff5 | 2020-11-05 09:12:20 +0100 | [diff] [blame] | 5297 | srv->est_need_conns = (srv->est_need_conns + srv->max_used_conns) / 2; |
Willy Tarreau | bdb86bd | 2020-06-29 15:56:35 +0200 | [diff] [blame] | 5298 | if (srv->est_need_conns < srv->max_used_conns) |
| 5299 | srv->est_need_conns = srv->max_used_conns; |
| 5300 | |
Olivier Houchard | 079cb9a | 2020-03-30 00:23:57 +0200 | [diff] [blame] | 5301 | srv->max_used_conns = srv->curr_used_conns; |
| 5302 | |
Willy Tarreau | 18ed789 | 2020-07-02 19:05:30 +0200 | [diff] [blame] | 5303 | if (exceed_conns <= 0) |
| 5304 | goto remove; |
| 5305 | |
Willy Tarreau | c35bcfc | 2020-06-29 14:43:16 +0200 | [diff] [blame] | 5306 | /* check all threads starting with ours */ |
| 5307 | for (i = tid;;) { |
Olivier Houchard | 079cb9a | 2020-03-30 00:23:57 +0200 | [diff] [blame] | 5308 | int max_conn; |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5309 | int j; |
| 5310 | int did_remove = 0; |
| 5311 | |
Olivier Houchard | 079cb9a | 2020-03-30 00:23:57 +0200 | [diff] [blame] | 5312 | max_conn = (exceed_conns * srv->curr_idle_thr[i]) / |
| 5313 | curr_idle + 1; |
Olivier Houchard | ff1d092 | 2020-06-29 20:15:59 +0200 | [diff] [blame] | 5314 | |
Amaury Denoyelle | 5c7086f | 2021-01-11 09:21:52 +0100 | [diff] [blame] | 5315 | HA_SPIN_LOCK(IDLE_CONNS_LOCK, &idle_conns[i].idle_conns_lock); |
Willy Tarreau | 430bf4a | 2021-03-04 09:45:32 +0100 | [diff] [blame] | 5316 | j = srv_migrate_conns_to_remove(&srv->per_thr[i].idle_conns, &idle_conns[i].toremove_conns, max_conn); |
Olivier Houchard | ff1d092 | 2020-06-29 20:15:59 +0200 | [diff] [blame] | 5317 | if (j > 0) |
| 5318 | did_remove = 1; |
| 5319 | if (max_conn - j > 0 && |
Willy Tarreau | 430bf4a | 2021-03-04 09:45:32 +0100 | [diff] [blame] | 5320 | srv_migrate_conns_to_remove(&srv->per_thr[i].safe_conns, &idle_conns[i].toremove_conns, max_conn - j) > 0) |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5321 | did_remove = 1; |
Amaury Denoyelle | 5c7086f | 2021-01-11 09:21:52 +0100 | [diff] [blame] | 5322 | HA_SPIN_UNLOCK(IDLE_CONNS_LOCK, &idle_conns[i].idle_conns_lock); |
Olivier Houchard | ff1d092 | 2020-06-29 20:15:59 +0200 | [diff] [blame] | 5323 | |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5324 | if (did_remove) |
Willy Tarreau | 4d82bf5 | 2020-06-28 00:19:17 +0200 | [diff] [blame] | 5325 | task_wakeup(idle_conns[i].cleanup_task, TASK_WOKEN_OTHER); |
Willy Tarreau | c35bcfc | 2020-06-29 14:43:16 +0200 | [diff] [blame] | 5326 | |
| 5327 | if ((i = ((i + 1 == global.nbthread) ? 0 : i + 1)) == tid) |
| 5328 | break; |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5329 | } |
Olivier Houchard | 079cb9a | 2020-03-30 00:23:57 +0200 | [diff] [blame] | 5330 | remove: |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5331 | eb32_delete(&srv->idle_node); |
Willy Tarreau | 21b9ff5 | 2020-11-05 09:12:20 +0100 | [diff] [blame] | 5332 | |
| 5333 | if (srv->curr_idle_conns) { |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5334 | /* There are still more idle connections, add the |
| 5335 | * server back in the tree. |
| 5336 | */ |
Willy Tarreau | 21b9ff5 | 2020-11-05 09:12:20 +0100 | [diff] [blame] | 5337 | srv->idle_node.key = tick_add(srv->pool_purge_delay, now_ms); |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5338 | eb32_insert(&idle_conn_srv, &srv->idle_node); |
Willy Tarreau | 21b9ff5 | 2020-11-05 09:12:20 +0100 | [diff] [blame] | 5339 | next_wakeup = tick_first(next_wakeup, srv->idle_node.key); |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5340 | } |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 5341 | } |
Olivier Houchard | 9ea5d36 | 2019-02-14 18:29:09 +0100 | [diff] [blame] | 5342 | HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conn_srv_lock); |
| 5343 | |
Willy Tarreau | 21b9ff5 | 2020-11-05 09:12:20 +0100 | [diff] [blame] | 5344 | task->expire = next_wakeup; |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 5345 | return task; |
| 5346 | } |
Olivier Houchard | 88698d9 | 2019-04-16 19:07:22 +0200 | [diff] [blame] | 5347 | |
Amaury Denoyelle | 3109ccf | 2021-04-29 17:30:05 +0200 | [diff] [blame] | 5348 | /* Close remaining idle connections. This functions is designed to be run on |
| 5349 | * process shutdown. This guarantees a proper socket shutdown to avoid |
| 5350 | * TIME_WAIT state. For a quick operation, only ctrl is closed, xprt stack is |
| 5351 | * bypassed. |
| 5352 | * |
| 5353 | * This function is not thread-safe so it must only be called via a global |
| 5354 | * deinit function. |
| 5355 | */ |
| 5356 | static void srv_close_idle_conns(struct server *srv) |
| 5357 | { |
| 5358 | struct eb_root **cleaned_tree; |
| 5359 | int i; |
| 5360 | |
| 5361 | for (i = 0; i < global.nbthread; ++i) { |
| 5362 | struct eb_root *conn_trees[] = { |
| 5363 | &srv->per_thr[i].idle_conns, |
| 5364 | &srv->per_thr[i].safe_conns, |
| 5365 | &srv->per_thr[i].avail_conns, |
| 5366 | NULL |
| 5367 | }; |
| 5368 | |
| 5369 | for (cleaned_tree = conn_trees; *cleaned_tree; ++cleaned_tree) { |
| 5370 | while (!eb_is_empty(*cleaned_tree)) { |
| 5371 | struct ebmb_node *node = ebmb_first(*cleaned_tree); |
| 5372 | struct conn_hash_node *conn_hash_node = ebmb_entry(node, struct conn_hash_node, node); |
| 5373 | struct connection *conn = conn_hash_node->conn; |
| 5374 | |
| 5375 | if (conn->ctrl->ctrl_close) |
| 5376 | conn->ctrl->ctrl_close(conn); |
| 5377 | ebmb_delete(node); |
| 5378 | } |
| 5379 | } |
| 5380 | } |
| 5381 | } |
| 5382 | |
| 5383 | REGISTER_SERVER_DEINIT(srv_close_idle_conns); |
| 5384 | |
Willy Tarreau | 76cc699 | 2020-07-01 18:49:24 +0200 | [diff] [blame] | 5385 | /* config parser for global "tune.idle-pool.shared", accepts "on" or "off" */ |
| 5386 | static int cfg_parse_idle_pool_shared(char **args, int section_type, struct proxy *curpx, |
Willy Tarreau | 0182516 | 2021-03-09 09:53:46 +0100 | [diff] [blame] | 5387 | const struct proxy *defpx, const char *file, int line, |
Willy Tarreau | 76cc699 | 2020-07-01 18:49:24 +0200 | [diff] [blame] | 5388 | char **err) |
| 5389 | { |
| 5390 | if (too_many_args(1, args, err, NULL)) |
| 5391 | return -1; |
| 5392 | |
| 5393 | if (strcmp(args[1], "on") == 0) |
| 5394 | global.tune.options |= GTUNE_IDLE_POOL_SHARED; |
| 5395 | else if (strcmp(args[1], "off") == 0) |
| 5396 | global.tune.options &= ~GTUNE_IDLE_POOL_SHARED; |
| 5397 | else { |
| 5398 | memprintf(err, "'%s' expects either 'on' or 'off' but got '%s'.", args[0], args[1]); |
| 5399 | return -1; |
| 5400 | } |
| 5401 | return 0; |
| 5402 | } |
| 5403 | |
Olivier Houchard | 88698d9 | 2019-04-16 19:07:22 +0200 | [diff] [blame] | 5404 | /* config parser for global "tune.pool-{low,high}-fd-ratio" */ |
| 5405 | static int cfg_parse_pool_fd_ratio(char **args, int section_type, struct proxy *curpx, |
Willy Tarreau | 0182516 | 2021-03-09 09:53:46 +0100 | [diff] [blame] | 5406 | const struct proxy *defpx, const char *file, int line, |
Olivier Houchard | 88698d9 | 2019-04-16 19:07:22 +0200 | [diff] [blame] | 5407 | char **err) |
| 5408 | { |
| 5409 | int arg = -1; |
| 5410 | |
| 5411 | if (too_many_args(1, args, err, NULL)) |
| 5412 | return -1; |
| 5413 | |
| 5414 | if (*(args[1]) != 0) |
| 5415 | arg = atoi(args[1]); |
| 5416 | |
| 5417 | if (arg < 0 || arg > 100) { |
| 5418 | memprintf(err, "'%s' expects an integer argument between 0 and 100.", args[0]); |
| 5419 | return -1; |
| 5420 | } |
| 5421 | |
| 5422 | if (args[0][10] == 'h') |
| 5423 | global.tune.pool_high_ratio = arg; |
| 5424 | else |
| 5425 | global.tune.pool_low_ratio = arg; |
| 5426 | return 0; |
| 5427 | } |
| 5428 | |
| 5429 | /* config keyword parsers */ |
| 5430 | static struct cfg_kw_list cfg_kws = {ILH, { |
Willy Tarreau | 76cc699 | 2020-07-01 18:49:24 +0200 | [diff] [blame] | 5431 | { CFG_GLOBAL, "tune.idle-pool.shared", cfg_parse_idle_pool_shared }, |
Olivier Houchard | 88698d9 | 2019-04-16 19:07:22 +0200 | [diff] [blame] | 5432 | { CFG_GLOBAL, "tune.pool-high-fd-ratio", cfg_parse_pool_fd_ratio }, |
| 5433 | { CFG_GLOBAL, "tune.pool-low-fd-ratio", cfg_parse_pool_fd_ratio }, |
| 5434 | { 0, NULL, NULL } |
| 5435 | }}; |
| 5436 | |
| 5437 | INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws); |
| 5438 | |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 5439 | /* |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 5440 | * Local variables: |
| 5441 | * c-indent-level: 8 |
| 5442 | * c-basic-offset: 8 |
| 5443 | * End: |
| 5444 | */ |