blob: 5ea6ca12c6f7280c552f680b5442e1a265c05e78 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * Server management functions.
3 *
Willy Tarreau21faa912012-10-10 08:27:36 +02004 * Copyright 2000-2012 Willy Tarreau <w@1wt.eu>
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +01005 * Copyright 2007-2008 Krzysztof Piotr Oledzki <ole@ans.pl>
Willy Tarreaubaaee002006-06-26 02:48:02 +02006 *
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 Tarreau0a4b0ab2020-06-11 11:22:44 +020014#include <sys/types.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020015#include <netinet/tcp.h>
Willy Tarreau272adea2014-03-31 10:39:59 +020016#include <ctype.h>
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +020017#include <errno.h>
Willy Tarreau272adea2014-03-31 10:39:59 +020018
Willy Tarreaub2551052020-06-09 09:07:15 +020019#include <import/ebsttree.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020020#include <import/xxhash.h>
21
Willy Tarreaub2551052020-06-09 09:07:15 +020022#include <haproxy/api.h>
Willy Tarreau3f0f82e2020-06-04 19:42:41 +020023#include <haproxy/applet-t.h>
Willy Tarreau49801602020-06-04 22:50:02 +020024#include <haproxy/backend.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020025#include <haproxy/cfgparse.h>
Willy Tarreau4aa573d2020-06-04 18:21:56 +020026#include <haproxy/check.h>
Willy Tarreau83487a82020-06-04 20:19:54 +020027#include <haproxy/cli.h>
Willy Tarreau7ea393d2020-06-04 18:02:10 +020028#include <haproxy/connection.h>
Willy Tarreau3afc4c42020-06-03 18:23:19 +020029#include <haproxy/dict-t.h>
Willy Tarreaueb92deb2020-06-04 10:53:16 +020030#include <haproxy/dns.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020031#include <haproxy/errors.h>
Willy Tarreauf268ee82020-06-04 17:05:57 +020032#include <haproxy/global.h>
Willy Tarreau36979d92020-06-05 17:27:29 +020033#include <haproxy/log.h>
Willy Tarreaucee013e2020-06-05 11:40:38 +020034#include <haproxy/mailers.h>
Willy Tarreau7a00efb2020-06-02 17:02:59 +020035#include <haproxy/namespace.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020036#include <haproxy/port_range.h>
37#include <haproxy/protocol.h>
Willy Tarreaua55c4542020-06-04 22:59:39 +020038#include <haproxy/queue.h>
Willy Tarreaue6ce10b2020-06-04 15:33:47 +020039#include <haproxy/sample.h>
Willy Tarreau1e56f922020-06-04 23:20:13 +020040#include <haproxy/server.h>
Willy Tarreau2eec9b52020-06-04 19:58:55 +020041#include <haproxy/stats-t.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +020042#include <haproxy/stream.h>
Willy Tarreau5e539c92020-06-04 20:45:39 +020043#include <haproxy/stream_interface.h>
Willy Tarreaucea0e1b2020-06-04 17:25:40 +020044#include <haproxy/task.h>
Willy Tarreau51cd5952020-06-05 12:25:38 +020045#include <haproxy/tcpcheck.h>
Willy Tarreau92b4f132020-06-01 11:05:15 +020046#include <haproxy/time.h>
Krzysztof Oledzki85130942007-10-22 16:21:10 +020047
Baptiste Assmannda29fe22019-06-13 13:24:29 +020048
Willy Tarreau3ff577e2018-08-02 11:48:52 +020049static void srv_update_status(struct server *s);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +020050static void srv_update_state(struct server *srv, int version, char **params);
Baptiste Assmann83cbaa52016-11-02 15:34:05 +010051static int srv_apply_lastaddr(struct server *srv, int *err_code);
Olivier Houchardd16bfe62017-10-31 15:21:19 +010052static int srv_set_fqdn(struct server *srv, const char *fqdn, int dns_locked);
Baptiste Assmannda29fe22019-06-13 13:24:29 +020053static void srv_state_parse_line(char *buf, const int version, char **params, char **srv_params);
54static int srv_state_get_version(FILE *f);
William Dauchy6318d332020-05-02 21:52:36 +020055static void srv_cleanup_connections(struct server *srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +020056
Willy Tarreau21faa912012-10-10 08:27:36 +020057/* List head of all known server keywords */
58static struct srv_kw_list srv_keywords = {
59 .list = LIST_HEAD_INIT(srv_keywords.list)
60};
Krzysztof Oledzki85130942007-10-22 16:21:10 +020061
Willy Tarreauaf613e82020-06-05 08:40:51 +020062__decl_thread(HA_SPINLOCK_T idle_conn_srv_lock);
Olivier Houchard9ea5d362019-02-14 18:29:09 +010063struct eb_root idle_conn_srv = EB_ROOT;
64struct task *idle_conn_task = NULL;
Olivier Houchard9ea5d362019-02-14 18:29:09 +010065
Frédéric Lécaille7da71292019-05-20 09:47:07 +020066/* The server names dictionary */
67struct dict server_name_dict = {
68 .name = "server names",
69 .values = EB_ROOT_UNIQUE,
70};
71
Baptiste Assmannda29fe22019-06-13 13:24:29 +020072/* tree where global state_file is loaded */
Willy Tarreaufd1aa012019-12-20 17:23:40 +010073struct eb_root state_file = EB_ROOT_UNIQUE;
Baptiste Assmannda29fe22019-06-13 13:24:29 +020074
Simon Hormana3608442013-11-01 16:46:15 +090075int srv_downtime(const struct server *s)
Willy Tarreau21faa912012-10-10 08:27:36 +020076{
Amaury Denoyellee6ba7912020-10-29 15:59:05 +010077 if ((s->cur_state != SRV_ST_STOPPED) || s->last_change >= now.tv_sec) // ignore negative time
Krzysztof Oledzki85130942007-10-22 16:21:10 +020078 return s->down_time;
79
80 return now.tv_sec - s->last_change + s->down_time;
81}
Willy Tarreaubaaee002006-06-26 02:48:02 +020082
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -050083int srv_lastsession(const struct server *s)
84{
85 if (s->counters.last_sess)
86 return now.tv_sec - s->counters.last_sess;
87
88 return -1;
89}
90
Simon Horman4a741432013-02-23 15:35:38 +090091int srv_getinter(const struct check *check)
Willy Tarreau21faa912012-10-10 08:27:36 +020092{
Simon Horman4a741432013-02-23 15:35:38 +090093 const struct server *s = check->server;
94
Willy Tarreauff5ae352013-12-11 20:36:34 +010095 if ((check->state & CHK_ST_CONFIGURED) && (check->health == check->rise + check->fall - 1))
Simon Horman4a741432013-02-23 15:35:38 +090096 return check->inter;
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +010097
Emeric Brun52a91d32017-08-31 14:41:55 +020098 if ((s->next_state == SRV_ST_STOPPED) && check->health == 0)
Simon Horman4a741432013-02-23 15:35:38 +090099 return (check->downinter)?(check->downinter):(check->inter);
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100100
Simon Horman4a741432013-02-23 15:35:38 +0900101 return (check->fastinter)?(check->fastinter):(check->inter);
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100102}
103
Olivier Houcharde9bad0a2018-01-17 17:39:34 +0100104/*
105 * Check that we did not get a hash collision.
Willy Tarreau595e7672020-10-20 17:30:08 +0200106 * Unlikely, but it can happen. The server's proxy must be at least
107 * read-locked.
Olivier Houcharde9bad0a2018-01-17 17:39:34 +0100108 */
109static inline void srv_check_for_dup_dyncookie(struct server *s)
Olivier Houchard4e694042017-03-14 20:01:29 +0100110{
111 struct proxy *p = s->proxy;
112 struct server *tmpserv;
Olivier Houcharde9bad0a2018-01-17 17:39:34 +0100113
114 for (tmpserv = p->srv; tmpserv != NULL;
115 tmpserv = tmpserv->next) {
116 if (tmpserv == s)
117 continue;
118 if (tmpserv->next_admin & SRV_ADMF_FMAINT)
119 continue;
120 if (tmpserv->cookie &&
121 strcmp(tmpserv->cookie, s->cookie) == 0) {
122 ha_warning("We generated two equal cookies for two different servers.\n"
123 "Please change the secret key for '%s'.\n",
124 s->proxy->id);
125 }
126 }
127
128}
129
Willy Tarreau46b7f532018-08-21 11:54:26 +0200130/*
Willy Tarreau595e7672020-10-20 17:30:08 +0200131 * Must be called with the server lock held, and will read-lock the proxy.
Willy Tarreau46b7f532018-08-21 11:54:26 +0200132 */
Olivier Houcharde9bad0a2018-01-17 17:39:34 +0100133void srv_set_dyncookie(struct server *s)
134{
135 struct proxy *p = s->proxy;
Olivier Houchard4e694042017-03-14 20:01:29 +0100136 char *tmpbuf;
137 unsigned long long hash_value;
Olivier Houchard2cb49eb2017-03-15 15:11:06 +0100138 size_t key_len;
Olivier Houchard4e694042017-03-14 20:01:29 +0100139 size_t buffer_len;
140 int addr_len;
141 int port;
142
Willy Tarreau595e7672020-10-20 17:30:08 +0200143 HA_RWLOCK_RDLOCK(PROXY_LOCK, &p->lock);
Willy Tarreau5e83d992019-07-30 11:59:34 +0200144
Olivier Houchard4e694042017-03-14 20:01:29 +0100145 if ((s->flags & SRV_F_COOKIESET) ||
146 !(s->proxy->ck_opts & PR_CK_DYNAMIC) ||
147 s->proxy->dyncookie_key == NULL)
Willy Tarreau5e83d992019-07-30 11:59:34 +0200148 goto out;
Olivier Houchard2cb49eb2017-03-15 15:11:06 +0100149 key_len = strlen(p->dyncookie_key);
Olivier Houchard4e694042017-03-14 20:01:29 +0100150
151 if (s->addr.ss_family != AF_INET &&
152 s->addr.ss_family != AF_INET6)
Willy Tarreau5e83d992019-07-30 11:59:34 +0200153 goto out;
Olivier Houchard4e694042017-03-14 20:01:29 +0100154 /*
155 * Buffer to calculate the cookie value.
156 * The buffer contains the secret key + the server IP address
157 * + the TCP port.
158 */
159 addr_len = (s->addr.ss_family == AF_INET) ? 4 : 16;
160 /*
161 * The TCP port should use only 2 bytes, but is stored in
162 * an unsigned int in struct server, so let's use 4, to be
163 * on the safe side.
164 */
165 buffer_len = key_len + addr_len + 4;
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200166 tmpbuf = trash.area;
Olivier Houchard4e694042017-03-14 20:01:29 +0100167 memcpy(tmpbuf, p->dyncookie_key, key_len);
168 memcpy(&(tmpbuf[key_len]),
169 s->addr.ss_family == AF_INET ?
170 (void *)&((struct sockaddr_in *)&s->addr)->sin_addr.s_addr :
171 (void *)&(((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr),
172 addr_len);
173 /*
174 * Make sure it's the same across all the load balancers,
175 * no matter their endianness.
176 */
177 port = htonl(s->svc_port);
178 memcpy(&tmpbuf[key_len + addr_len], &port, 4);
179 hash_value = XXH64(tmpbuf, buffer_len, 0);
180 memprintf(&s->cookie, "%016llx", hash_value);
181 if (!s->cookie)
Willy Tarreau5e83d992019-07-30 11:59:34 +0200182 goto out;
Olivier Houchard4e694042017-03-14 20:01:29 +0100183 s->cklen = 16;
Olivier Houcharde9bad0a2018-01-17 17:39:34 +0100184
185 /* Don't bother checking if the dyncookie is duplicated if
186 * the server is marked as "disabled", maybe it doesn't have
187 * its real IP yet, but just a place holder.
Olivier Houchard4e694042017-03-14 20:01:29 +0100188 */
Olivier Houcharde9bad0a2018-01-17 17:39:34 +0100189 if (!(s->next_admin & SRV_ADMF_FMAINT))
190 srv_check_for_dup_dyncookie(s);
Willy Tarreau5e83d992019-07-30 11:59:34 +0200191 out:
Willy Tarreau595e7672020-10-20 17:30:08 +0200192 HA_RWLOCK_RDUNLOCK(PROXY_LOCK, &p->lock);
Olivier Houchard4e694042017-03-14 20:01:29 +0100193}
194
Willy Tarreau21faa912012-10-10 08:27:36 +0200195/*
196 * Registers the server keyword list <kwl> as a list of valid keywords for next
197 * parsing sessions.
198 */
199void srv_register_keywords(struct srv_kw_list *kwl)
200{
201 LIST_ADDQ(&srv_keywords.list, &kwl->list);
202}
203
204/* Return a pointer to the server keyword <kw>, or NULL if not found. If the
205 * keyword is found with a NULL ->parse() function, then an attempt is made to
206 * find one with a valid ->parse() function. This way it is possible to declare
207 * platform-dependant, known keywords as NULL, then only declare them as valid
208 * if some options are met. Note that if the requested keyword contains an
209 * opening parenthesis, everything from this point is ignored.
210 */
211struct srv_kw *srv_find_kw(const char *kw)
212{
213 int index;
214 const char *kwend;
215 struct srv_kw_list *kwl;
216 struct srv_kw *ret = NULL;
217
218 kwend = strchr(kw, '(');
219 if (!kwend)
220 kwend = kw + strlen(kw);
221
222 list_for_each_entry(kwl, &srv_keywords.list, list) {
223 for (index = 0; kwl->kw[index].kw != NULL; index++) {
224 if ((strncmp(kwl->kw[index].kw, kw, kwend - kw) == 0) &&
225 kwl->kw[index].kw[kwend-kw] == 0) {
226 if (kwl->kw[index].parse)
227 return &kwl->kw[index]; /* found it !*/
228 else
229 ret = &kwl->kw[index]; /* may be OK */
230 }
231 }
232 }
233 return ret;
234}
235
236/* Dumps all registered "server" keywords to the <out> string pointer. The
237 * unsupported keywords are only dumped if their supported form was not
238 * found.
239 */
240void srv_dump_kws(char **out)
241{
242 struct srv_kw_list *kwl;
243 int index;
244
Christopher Faulet784063e2020-05-18 12:14:18 +0200245 if (!out)
246 return;
247
Willy Tarreau21faa912012-10-10 08:27:36 +0200248 *out = NULL;
249 list_for_each_entry(kwl, &srv_keywords.list, list) {
250 for (index = 0; kwl->kw[index].kw != NULL; index++) {
251 if (kwl->kw[index].parse ||
252 srv_find_kw(kwl->kw[index].kw) == &kwl->kw[index]) {
253 memprintf(out, "%s[%4s] %s%s%s%s\n", *out ? *out : "",
254 kwl->scope,
255 kwl->kw[index].kw,
256 kwl->kw[index].skip ? " <arg>" : "",
257 kwl->kw[index].default_ok ? " [dflt_ok]" : "",
258 kwl->kw[index].parse ? "" : " (not supported)");
259 }
260 }
261 }
262}
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100263
Frédéric Lécaillef5bf9032017-03-10 11:51:05 +0100264/* Parse the "backup" server keyword */
265static int srv_parse_backup(char **args, int *cur_arg,
266 struct proxy *curproxy, struct server *newsrv, char **err)
267{
268 newsrv->flags |= SRV_F_BACKUP;
269 return 0;
270}
271
Alexander Liu2a54bb72019-05-22 19:44:48 +0800272
Frédéric Lécaille9d1b95b2017-03-15 09:13:33 +0100273/* Parse the "cookie" server keyword */
274static int srv_parse_cookie(char **args, int *cur_arg,
275 struct proxy *curproxy, struct server *newsrv, char **err)
276{
277 char *arg;
278
279 arg = args[*cur_arg + 1];
280 if (!*arg) {
281 memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]);
282 return ERR_ALERT | ERR_FATAL;
283 }
284
285 free(newsrv->cookie);
286 newsrv->cookie = strdup(arg);
287 newsrv->cklen = strlen(arg);
288 newsrv->flags |= SRV_F_COOKIESET;
289 return 0;
290}
291
Frédéric Lécaille2a0d0612017-03-21 11:53:54 +0100292/* Parse the "disabled" server keyword */
293static int srv_parse_disabled(char **args, int *cur_arg,
294 struct proxy *curproxy, struct server *newsrv, char **err)
295{
Emeric Brun52a91d32017-08-31 14:41:55 +0200296 newsrv->next_admin |= SRV_ADMF_CMAINT | SRV_ADMF_FMAINT;
297 newsrv->next_state = SRV_ST_STOPPED;
Frédéric Lécaille2a0d0612017-03-21 11:53:54 +0100298 newsrv->check.state |= CHK_ST_PAUSED;
299 newsrv->check.health = 0;
300 return 0;
301}
302
303/* Parse the "enabled" server keyword */
304static int srv_parse_enabled(char **args, int *cur_arg,
305 struct proxy *curproxy, struct server *newsrv, char **err)
306{
Emeric Brun52a91d32017-08-31 14:41:55 +0200307 newsrv->next_admin &= ~SRV_ADMF_CMAINT & ~SRV_ADMF_FMAINT;
308 newsrv->next_state = SRV_ST_RUNNING;
Frédéric Lécaille2a0d0612017-03-21 11:53:54 +0100309 newsrv->check.state &= ~CHK_ST_PAUSED;
310 newsrv->check.health = newsrv->check.rise;
311 return 0;
312}
313
Willy Tarreau9c538e02019-01-23 10:21:49 +0100314static int srv_parse_max_reuse(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err)
315{
316 char *arg;
317
318 arg = args[*cur_arg + 1];
319 if (!*arg) {
320 memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]);
321 return ERR_ALERT | ERR_FATAL;
322 }
323 newsrv->max_reuse = atoi(arg);
324
325 return 0;
326}
327
Olivier Houchardb7b3faa2018-12-14 18:15:36 +0100328static int srv_parse_pool_purge_delay(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err)
Olivier Houchard0c18a6f2018-12-02 14:11:41 +0100329{
330 const char *res;
331 char *arg;
332 unsigned int time;
333
334 arg = args[*cur_arg + 1];
335 if (!*arg) {
336 memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]);
337 return ERR_ALERT | ERR_FATAL;
338 }
339 res = parse_time_err(arg, &time, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +0200340 if (res == PARSE_TIME_OVER) {
341 memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
342 args[*cur_arg+1], args[*cur_arg]);
343 return ERR_ALERT | ERR_FATAL;
344 }
345 else if (res == PARSE_TIME_UNDER) {
346 memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
347 args[*cur_arg+1], args[*cur_arg]);
348 return ERR_ALERT | ERR_FATAL;
349 }
350 else if (res) {
Olivier Houchard0c18a6f2018-12-02 14:11:41 +0100351 memprintf(err, "unexpected character '%c' in argument to <%s>.\n",
352 *res, args[*cur_arg]);
353 return ERR_ALERT | ERR_FATAL;
354 }
Olivier Houchardb7b3faa2018-12-14 18:15:36 +0100355 newsrv->pool_purge_delay = time;
Olivier Houchard0c18a6f2018-12-02 14:11:41 +0100356
357 return 0;
358}
359
Willy Tarreau2f3f4d32020-07-01 07:43:51 +0200360static int srv_parse_pool_low_conn(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err)
361{
362 char *arg;
363
364 arg = args[*cur_arg + 1];
365 if (!*arg) {
366 memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]);
367 return ERR_ALERT | ERR_FATAL;
368 }
369
370 newsrv->low_idle_conns = atoi(arg);
371 return 0;
372}
373
Olivier Houchard006e3102018-12-10 18:30:32 +0100374static int srv_parse_pool_max_conn(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err)
375{
376 char *arg;
377
378 arg = args[*cur_arg + 1];
379 if (!*arg) {
380 memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]);
381 return ERR_ALERT | ERR_FATAL;
382 }
Willy Tarreaucb923d52019-01-23 10:39:27 +0100383
Olivier Houchard006e3102018-12-10 18:30:32 +0100384 newsrv->max_idle_conns = atoi(arg);
Willy Tarreaucb923d52019-01-23 10:39:27 +0100385 if ((int)newsrv->max_idle_conns < -1) {
386 memprintf(err, "'%s' must be >= -1", args[*cur_arg]);
387 return ERR_ALERT | ERR_FATAL;
388 }
Olivier Houchard006e3102018-12-10 18:30:32 +0100389
390 return 0;
391}
392
Willy Tarreaudff55432012-10-10 17:51:05 +0200393/* parse the "id" server keyword */
394static int srv_parse_id(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err)
395{
396 struct eb32_node *node;
397
398 if (!*args[*cur_arg + 1]) {
399 memprintf(err, "'%s' : expects an integer argument", args[*cur_arg]);
400 return ERR_ALERT | ERR_FATAL;
401 }
402
403 newsrv->puid = atol(args[*cur_arg + 1]);
404 newsrv->conf.id.key = newsrv->puid;
405
406 if (newsrv->puid <= 0) {
407 memprintf(err, "'%s' : custom id has to be > 0", args[*cur_arg]);
408 return ERR_ALERT | ERR_FATAL;
409 }
410
411 node = eb32_lookup(&curproxy->conf.used_server_id, newsrv->puid);
412 if (node) {
413 struct server *target = container_of(node, struct server, conf.id);
414 memprintf(err, "'%s' : custom id %d already used at %s:%d ('server %s')",
415 args[*cur_arg], newsrv->puid, target->conf.file, target->conf.line,
416 target->id);
417 return ERR_ALERT | ERR_FATAL;
418 }
419
420 eb32_insert(&curproxy->conf.used_server_id, &newsrv->conf.id);
Baptiste Assmann7cc419a2015-07-07 22:02:20 +0200421 newsrv->flags |= SRV_F_FORCED_ID;
Willy Tarreaudff55432012-10-10 17:51:05 +0200422 return 0;
423}
424
Frédéric Lécaille22f41a22017-03-16 17:17:36 +0100425/* Parse the "namespace" server keyword */
426static int srv_parse_namespace(char **args, int *cur_arg,
427 struct proxy *curproxy, struct server *newsrv, char **err)
428{
Willy Tarreaue5733232019-05-22 19:24:06 +0200429#ifdef USE_NS
Frédéric Lécaille22f41a22017-03-16 17:17:36 +0100430 char *arg;
431
432 arg = args[*cur_arg + 1];
433 if (!*arg) {
434 memprintf(err, "'%s' : expects <name> as argument", args[*cur_arg]);
435 return ERR_ALERT | ERR_FATAL;
436 }
437
438 if (!strcmp(arg, "*")) {
439 /* Use the namespace associated with the connection (if present). */
440 newsrv->flags |= SRV_F_USE_NS_FROM_PP;
441 return 0;
442 }
443
444 /*
445 * As this parser may be called several times for the same 'default-server'
446 * object, or for a new 'server' instance deriving from a 'default-server'
447 * one with SRV_F_USE_NS_FROM_PP flag enabled, let's reset it.
448 */
449 newsrv->flags &= ~SRV_F_USE_NS_FROM_PP;
450
451 newsrv->netns = netns_store_lookup(arg, strlen(arg));
452 if (!newsrv->netns)
453 newsrv->netns = netns_store_insert(arg);
454
455 if (!newsrv->netns) {
456 memprintf(err, "Cannot open namespace '%s'", arg);
457 return ERR_ALERT | ERR_FATAL;
458 }
459
460 return 0;
461#else
462 memprintf(err, "'%s': '%s' option not implemented", args[0], args[*cur_arg]);
463 return ERR_ALERT | ERR_FATAL;
464#endif
465}
466
Frédéric Lécaillef5bf9032017-03-10 11:51:05 +0100467/* Parse the "no-backup" server keyword */
468static int srv_parse_no_backup(char **args, int *cur_arg,
469 struct proxy *curproxy, struct server *newsrv, char **err)
470{
471 newsrv->flags &= ~SRV_F_BACKUP;
472 return 0;
473}
474
Frédéric Lécaille25df8902017-03-10 14:04:31 +0100475
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100476/* Disable server PROXY protocol flags. */
Willy Tarreau0e492e22019-04-15 21:25:03 +0200477static inline int srv_disable_pp_flags(struct server *srv, unsigned int flags)
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100478{
479 srv->pp_opts &= ~flags;
480 return 0;
481}
482
483/* Parse the "no-send-proxy" server keyword */
484static int srv_parse_no_send_proxy(char **args, int *cur_arg,
485 struct proxy *curproxy, struct server *newsrv, char **err)
486{
487 return srv_disable_pp_flags(newsrv, SRV_PP_V1);
488}
489
490/* Parse the "no-send-proxy-v2" server keyword */
491static int srv_parse_no_send_proxy_v2(char **args, int *cur_arg,
492 struct proxy *curproxy, struct server *newsrv, char **err)
493{
494 return srv_disable_pp_flags(newsrv, SRV_PP_V2);
495}
496
Frédéric Lécaille1b9423d2019-07-04 14:19:06 +0200497/* Parse the "no-tfo" server keyword */
498static int srv_parse_no_tfo(char **args, int *cur_arg,
499 struct proxy *curproxy, struct server *newsrv, char **err)
500{
501 newsrv->flags &= ~SRV_F_FASTOPEN;
502 return 0;
503}
504
Frédéric Lécaillef9bc1d62017-03-10 15:50:49 +0100505/* Parse the "non-stick" server keyword */
506static int srv_parse_non_stick(char **args, int *cur_arg,
507 struct proxy *curproxy, struct server *newsrv, char **err)
508{
509 newsrv->flags |= SRV_F_NON_STICK;
510 return 0;
511}
512
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100513/* Enable server PROXY protocol flags. */
Willy Tarreau0e492e22019-04-15 21:25:03 +0200514static inline int srv_enable_pp_flags(struct server *srv, unsigned int flags)
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100515{
516 srv->pp_opts |= flags;
517 return 0;
518}
Christopher Faulet8ed0a3e2018-04-10 14:45:45 +0200519/* parse the "proto" server keyword */
520static int srv_parse_proto(char **args, int *cur_arg,
521 struct proxy *px, struct server *newsrv, char **err)
522{
523 struct ist proto;
524
525 if (!*args[*cur_arg + 1]) {
526 memprintf(err, "'%s' : missing value", args[*cur_arg]);
527 return ERR_ALERT | ERR_FATAL;
528 }
529 proto = ist2(args[*cur_arg + 1], strlen(args[*cur_arg + 1]));
530 newsrv->mux_proto = get_mux_proto(proto);
531 if (!newsrv->mux_proto) {
532 memprintf(err, "'%s' : unknown MUX protocol '%s'", args[*cur_arg], args[*cur_arg+1]);
533 return ERR_ALERT | ERR_FATAL;
534 }
Christopher Faulet8ed0a3e2018-04-10 14:45:45 +0200535 return 0;
536}
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100537
Emmanuel Hocdetf643b802018-02-01 15:20:32 +0100538/* parse the "proxy-v2-options" */
539static int srv_parse_proxy_v2_options(char **args, int *cur_arg,
540 struct proxy *px, struct server *newsrv, char **err)
541{
542 char *p, *n;
543 for (p = args[*cur_arg+1]; p; p = n) {
544 n = strchr(p, ',');
545 if (n)
546 *n++ = '\0';
547 if (!strcmp(p, "ssl")) {
548 newsrv->pp_opts |= SRV_PP_V2_SSL;
549 } else if (!strcmp(p, "cert-cn")) {
550 newsrv->pp_opts |= SRV_PP_V2_SSL;
551 newsrv->pp_opts |= SRV_PP_V2_SSL_CN;
Emmanuel Hocdetfa8d0f12018-02-01 15:53:52 +0100552 } else if (!strcmp(p, "cert-key")) {
553 newsrv->pp_opts |= SRV_PP_V2_SSL;
554 newsrv->pp_opts |= SRV_PP_V2_SSL_KEY_ALG;
555 } else if (!strcmp(p, "cert-sig")) {
556 newsrv->pp_opts |= SRV_PP_V2_SSL;
557 newsrv->pp_opts |= SRV_PP_V2_SSL_SIG_ALG;
558 } else if (!strcmp(p, "ssl-cipher")) {
559 newsrv->pp_opts |= SRV_PP_V2_SSL;
560 newsrv->pp_opts |= SRV_PP_V2_SSL_CIPHER;
Emmanuel Hocdet253c3b72018-02-01 18:29:59 +0100561 } else if (!strcmp(p, "authority")) {
562 newsrv->pp_opts |= SRV_PP_V2_AUTHORITY;
Emmanuel Hocdet4399c752018-02-05 15:26:43 +0100563 } else if (!strcmp(p, "crc32c")) {
564 newsrv->pp_opts |= SRV_PP_V2_CRC32C;
Tim Duesterhuscf6e0c82020-03-13 12:34:24 +0100565 } else if (!strcmp(p, "unique-id")) {
566 newsrv->pp_opts |= SRV_PP_V2_UNIQUE_ID;
Emmanuel Hocdetf643b802018-02-01 15:20:32 +0100567 } else
568 goto fail;
569 }
570 return 0;
571 fail:
572 if (err)
573 memprintf(err, "'%s' : proxy v2 option not implemented", p);
574 return ERR_ALERT | ERR_FATAL;
575}
576
Frédéric Lécaille547356e2017-03-15 08:55:39 +0100577/* Parse the "observe" server keyword */
578static int srv_parse_observe(char **args, int *cur_arg,
579 struct proxy *curproxy, struct server *newsrv, char **err)
580{
581 char *arg;
582
583 arg = args[*cur_arg + 1];
584 if (!*arg) {
585 memprintf(err, "'%s' expects <mode> as argument.\n", args[*cur_arg]);
586 return ERR_ALERT | ERR_FATAL;
587 }
588
589 if (!strcmp(arg, "none")) {
590 newsrv->observe = HANA_OBS_NONE;
591 }
592 else if (!strcmp(arg, "layer4")) {
593 newsrv->observe = HANA_OBS_LAYER4;
594 }
595 else if (!strcmp(arg, "layer7")) {
596 if (curproxy->mode != PR_MODE_HTTP) {
597 memprintf(err, "'%s' can only be used in http proxies.\n", arg);
598 return ERR_ALERT;
599 }
600 newsrv->observe = HANA_OBS_LAYER7;
601 }
602 else {
603 memprintf(err, "'%s' expects one of 'none', 'layer4', 'layer7' "
604 "but got '%s'\n", args[*cur_arg], arg);
605 return ERR_ALERT | ERR_FATAL;
606 }
607
608 return 0;
609}
610
Frédéric Lécaille16186232017-03-14 16:42:49 +0100611/* Parse the "redir" server keyword */
612static int srv_parse_redir(char **args, int *cur_arg,
613 struct proxy *curproxy, struct server *newsrv, char **err)
614{
615 char *arg;
616
617 arg = args[*cur_arg + 1];
618 if (!*arg) {
619 memprintf(err, "'%s' expects <prefix> as argument.\n", args[*cur_arg]);
620 return ERR_ALERT | ERR_FATAL;
621 }
622
623 free(newsrv->rdr_pfx);
624 newsrv->rdr_pfx = strdup(arg);
625 newsrv->rdr_len = strlen(arg);
626
627 return 0;
628}
629
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100630/* Parse the "send-proxy" server keyword */
631static int srv_parse_send_proxy(char **args, int *cur_arg,
632 struct proxy *curproxy, struct server *newsrv, char **err)
633{
634 return srv_enable_pp_flags(newsrv, SRV_PP_V1);
635}
636
637/* Parse the "send-proxy-v2" server keyword */
638static int srv_parse_send_proxy_v2(char **args, int *cur_arg,
639 struct proxy *curproxy, struct server *newsrv, char **err)
640{
641 return srv_enable_pp_flags(newsrv, SRV_PP_V2);
642}
643
Frédéric Lécailledba97072017-03-17 15:33:50 +0100644
645/* Parse the "source" server keyword */
646static int srv_parse_source(char **args, int *cur_arg,
647 struct proxy *curproxy, struct server *newsrv, char **err)
648{
649 char *errmsg;
650 int port_low, port_high;
651 struct sockaddr_storage *sk;
Frédéric Lécailledba97072017-03-17 15:33:50 +0100652
653 errmsg = NULL;
654
655 if (!*args[*cur_arg + 1]) {
656 memprintf(err, "'%s' expects <addr>[:<port>[-<port>]], and optionally '%s' <addr>, "
657 "and '%s' <name> as argument.\n", args[*cur_arg], "usesrc", "interface");
658 goto err;
659 }
660
661 /* 'sk' is statically allocated (no need to be freed). */
Willy Tarreau65ec4e32020-09-16 19:17:08 +0200662 sk = str2sa_range(args[*cur_arg + 1], NULL, &port_low, &port_high, NULL, NULL,
663 &errmsg, NULL, NULL,
664 PA_O_RESOLVE | PA_O_PORT_OK | PA_O_PORT_RANGE | PA_O_STREAM | PA_O_CONNECT);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100665 if (!sk) {
666 memprintf(err, "'%s %s' : %s\n", args[*cur_arg], args[*cur_arg + 1], errmsg);
667 goto err;
668 }
669
Frédéric Lécailledba97072017-03-17 15:33:50 +0100670 newsrv->conn_src.opts |= CO_SRC_BIND;
671 newsrv->conn_src.source_addr = *sk;
672
673 if (port_low != port_high) {
674 int i;
675
Frédéric Lécailledba97072017-03-17 15:33:50 +0100676 newsrv->conn_src.sport_range = port_range_alloc_range(port_high - port_low + 1);
677 for (i = 0; i < newsrv->conn_src.sport_range->size; i++)
678 newsrv->conn_src.sport_range->ports[i] = port_low + i;
679 }
680
681 *cur_arg += 2;
682 while (*(args[*cur_arg])) {
683 if (!strcmp(args[*cur_arg], "usesrc")) { /* address to use outside */
684#if defined(CONFIG_HAP_TRANSPARENT)
685 if (!*args[*cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100686 ha_alert("'usesrc' expects <addr>[:<port>], 'client', 'clientip', "
687 "or 'hdr_ip(name,#)' as argument.\n");
Frédéric Lécailledba97072017-03-17 15:33:50 +0100688 goto err;
689 }
690 if (!strcmp(args[*cur_arg + 1], "client")) {
691 newsrv->conn_src.opts &= ~CO_SRC_TPROXY_MASK;
692 newsrv->conn_src.opts |= CO_SRC_TPROXY_CLI;
693 }
694 else if (!strcmp(args[*cur_arg + 1], "clientip")) {
695 newsrv->conn_src.opts &= ~CO_SRC_TPROXY_MASK;
696 newsrv->conn_src.opts |= CO_SRC_TPROXY_CIP;
697 }
698 else if (!strncmp(args[*cur_arg + 1], "hdr_ip(", 7)) {
699 char *name, *end;
700
701 name = args[*cur_arg + 1] + 7;
Willy Tarreau90807112020-02-25 08:16:33 +0100702 while (isspace((unsigned char)*name))
Frédéric Lécailledba97072017-03-17 15:33:50 +0100703 name++;
704
705 end = name;
Willy Tarreau90807112020-02-25 08:16:33 +0100706 while (*end && !isspace((unsigned char)*end) && *end != ',' && *end != ')')
Frédéric Lécailledba97072017-03-17 15:33:50 +0100707 end++;
708
709 newsrv->conn_src.opts &= ~CO_SRC_TPROXY_MASK;
710 newsrv->conn_src.opts |= CO_SRC_TPROXY_DYN;
711 free(newsrv->conn_src.bind_hdr_name);
712 newsrv->conn_src.bind_hdr_name = calloc(1, end - name + 1);
713 newsrv->conn_src.bind_hdr_len = end - name;
714 memcpy(newsrv->conn_src.bind_hdr_name, name, end - name);
715 newsrv->conn_src.bind_hdr_name[end - name] = '\0';
716 newsrv->conn_src.bind_hdr_occ = -1;
717
718 /* now look for an occurrence number */
Willy Tarreau90807112020-02-25 08:16:33 +0100719 while (isspace((unsigned char)*end))
Frédéric Lécailledba97072017-03-17 15:33:50 +0100720 end++;
721 if (*end == ',') {
722 end++;
723 name = end;
724 if (*end == '-')
725 end++;
Willy Tarreau90807112020-02-25 08:16:33 +0100726 while (isdigit((unsigned char)*end))
Frédéric Lécailledba97072017-03-17 15:33:50 +0100727 end++;
728 newsrv->conn_src.bind_hdr_occ = strl2ic(name, end - name);
729 }
730
731 if (newsrv->conn_src.bind_hdr_occ < -MAX_HDR_HISTORY) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100732 ha_alert("usesrc hdr_ip(name,num) does not support negative"
733 " occurrences values smaller than %d.\n", MAX_HDR_HISTORY);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100734 goto err;
735 }
736 }
737 else {
738 struct sockaddr_storage *sk;
739 int port1, port2;
740
741 /* 'sk' is statically allocated (no need to be freed). */
Willy Tarreau65ec4e32020-09-16 19:17:08 +0200742 sk = str2sa_range(args[*cur_arg + 1], NULL, &port1, &port2, NULL, NULL,
743 &errmsg, NULL, NULL,
744 PA_O_RESOLVE | PA_O_PORT_OK | PA_O_STREAM | PA_O_CONNECT);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100745 if (!sk) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100746 ha_alert("'%s %s' : %s\n", args[*cur_arg], args[*cur_arg + 1], errmsg);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100747 goto err;
748 }
749
Frédéric Lécailledba97072017-03-17 15:33:50 +0100750 newsrv->conn_src.tproxy_addr = *sk;
751 newsrv->conn_src.opts |= CO_SRC_TPROXY_ADDR;
752 }
753 global.last_checks |= LSTCHK_NETADM;
754 *cur_arg += 2;
755 continue;
756#else /* no TPROXY support */
Christopher Faulet767a84b2017-11-24 16:50:31 +0100757 ha_alert("'usesrc' not allowed here because support for TPROXY was not compiled in.\n");
Frédéric Lécailledba97072017-03-17 15:33:50 +0100758 goto err;
759#endif /* defined(CONFIG_HAP_TRANSPARENT) */
760 } /* "usesrc" */
761
762 if (!strcmp(args[*cur_arg], "interface")) { /* specifically bind to this interface */
763#ifdef SO_BINDTODEVICE
764 if (!*args[*cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100765 ha_alert("'%s' : missing interface name.\n", args[0]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100766 goto err;
767 }
768 free(newsrv->conn_src.iface_name);
769 newsrv->conn_src.iface_name = strdup(args[*cur_arg + 1]);
770 newsrv->conn_src.iface_len = strlen(newsrv->conn_src.iface_name);
771 global.last_checks |= LSTCHK_NETADM;
772#else
Christopher Faulet767a84b2017-11-24 16:50:31 +0100773 ha_alert("'%s' : '%s' option not implemented.\n", args[0], args[*cur_arg]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100774 goto err;
775#endif
776 *cur_arg += 2;
777 continue;
778 }
779 /* this keyword in not an option of "source" */
780 break;
781 } /* while */
782
783 return 0;
784
785 err:
786 free(errmsg);
787 return ERR_ALERT | ERR_FATAL;
788}
789
Frédéric Lécaillef9bc1d62017-03-10 15:50:49 +0100790/* Parse the "stick" server keyword */
791static int srv_parse_stick(char **args, int *cur_arg,
792 struct proxy *curproxy, struct server *newsrv, char **err)
793{
794 newsrv->flags &= ~SRV_F_NON_STICK;
795 return 0;
796}
797
Frédéric Lécaille67e0e612017-03-14 15:21:31 +0100798/* Parse the "track" server keyword */
799static int srv_parse_track(char **args, int *cur_arg,
800 struct proxy *curproxy, struct server *newsrv, char **err)
801{
802 char *arg;
803
804 arg = args[*cur_arg + 1];
805 if (!*arg) {
806 memprintf(err, "'track' expects [<proxy>/]<server> as argument.\n");
807 return ERR_ALERT | ERR_FATAL;
808 }
809
810 free(newsrv->trackit);
811 newsrv->trackit = strdup(arg);
812
813 return 0;
Alexander Liu2a54bb72019-05-22 19:44:48 +0800814}
815
816/* Parse the "socks4" server keyword */
817static int srv_parse_socks4(char **args, int *cur_arg,
818 struct proxy *curproxy, struct server *newsrv, char **err)
819{
820 char *errmsg;
821 int port_low, port_high;
822 struct sockaddr_storage *sk;
Alexander Liu2a54bb72019-05-22 19:44:48 +0800823
824 errmsg = NULL;
825
826 if (!*args[*cur_arg + 1]) {
827 memprintf(err, "'%s' expects <addr>:<port> as argument.\n", args[*cur_arg]);
828 goto err;
829 }
830
831 /* 'sk' is statically allocated (no need to be freed). */
Willy Tarreau65ec4e32020-09-16 19:17:08 +0200832 sk = str2sa_range(args[*cur_arg + 1], NULL, &port_low, &port_high, NULL, NULL,
833 &errmsg, NULL, NULL,
834 PA_O_RESOLVE | PA_O_PORT_OK | PA_O_PORT_MAND | PA_O_STREAM | PA_O_CONNECT);
Alexander Liu2a54bb72019-05-22 19:44:48 +0800835 if (!sk) {
836 memprintf(err, "'%s %s' : %s\n", args[*cur_arg], args[*cur_arg + 1], errmsg);
837 goto err;
838 }
839
Alexander Liu2a54bb72019-05-22 19:44:48 +0800840 newsrv->flags |= SRV_F_SOCKS4_PROXY;
841 newsrv->socks4_addr = *sk;
842
Alexander Liu2a54bb72019-05-22 19:44:48 +0800843 return 0;
844
845 err:
846 free(errmsg);
847 return ERR_ALERT | ERR_FATAL;
Frédéric Lécaille67e0e612017-03-14 15:21:31 +0100848}
849
Frédéric Lécailledba97072017-03-17 15:33:50 +0100850
Willy Tarreau034c88c2017-01-23 23:36:45 +0100851/* parse the "tfo" server keyword */
852static int srv_parse_tfo(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
853{
854 newsrv->flags |= SRV_F_FASTOPEN;
855 return 0;
856}
857
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200858/* Shutdown all connections of a server. The caller must pass a termination
Willy Tarreaue7dff022015-04-03 01:14:29 +0200859 * code in <why>, which must be one of SF_ERR_* indicating the reason for the
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200860 * shutdown.
Willy Tarreau46b7f532018-08-21 11:54:26 +0200861 *
862 * Must be called with the server lock held.
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200863 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200864void srv_shutdown_streams(struct server *srv, int why)
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200865{
Willy Tarreau87b09662015-04-03 00:22:06 +0200866 struct stream *stream, *stream_bck;
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200867
Willy Tarreau87b09662015-04-03 00:22:06 +0200868 list_for_each_entry_safe(stream, stream_bck, &srv->actconns, by_srv)
869 if (stream->srv_conn == srv)
870 stream_shutdown(stream, why);
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200871}
872
873/* Shutdown all connections of all backup servers of a proxy. The caller must
Willy Tarreaue7dff022015-04-03 01:14:29 +0200874 * pass a termination code in <why>, which must be one of SF_ERR_* indicating
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200875 * the reason for the shutdown.
Willy Tarreau46b7f532018-08-21 11:54:26 +0200876 *
877 * Must be called with the server lock held.
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200878 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200879void srv_shutdown_backup_streams(struct proxy *px, int why)
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200880{
881 struct server *srv;
882
883 for (srv = px->srv; srv != NULL; srv = srv->next)
884 if (srv->flags & SRV_F_BACKUP)
Willy Tarreau87b09662015-04-03 00:22:06 +0200885 srv_shutdown_streams(srv, why);
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200886}
887
Willy Tarreaubda92272014-05-20 21:55:30 +0200888/* Appends some information to a message string related to a server going UP or
889 * DOWN. If both <forced> and <reason> are null and the server tracks another
890 * one, a "via" information will be provided to know where the status came from.
Emeric Brun5a133512017-10-19 14:42:30 +0200891 * If <check> is non-null, an entire string describing the check result will be
892 * appended after a comma and a space (eg: to report some information from the
893 * check that changed the state). In the other case, the string will be built
894 * using the check results stored into the struct server if present.
895 * If <xferred> is non-negative, some information about requeued sessions are
Willy Tarreaubda92272014-05-20 21:55:30 +0200896 * provided.
Willy Tarreau46b7f532018-08-21 11:54:26 +0200897 *
898 * Must be called with the server lock held.
Willy Tarreaua0066dd2014-05-16 11:25:16 +0200899 */
Willy Tarreau83061a82018-07-13 11:56:34 +0200900void srv_append_status(struct buffer *msg, struct server *s,
901 struct check *check, int xferred, int forced)
Willy Tarreaua0066dd2014-05-16 11:25:16 +0200902{
Emeric Brun5a133512017-10-19 14:42:30 +0200903 short status = s->op_st_chg.status;
904 short code = s->op_st_chg.code;
905 long duration = s->op_st_chg.duration;
906 char *desc = s->op_st_chg.reason;
907
908 if (check) {
909 status = check->status;
910 code = check->code;
911 duration = check->duration;
912 desc = check->desc;
913 }
914
915 if (status != -1) {
916 chunk_appendf(msg, ", reason: %s", get_check_status_description(status));
917
918 if (status >= HCHK_STATUS_L57DATA)
919 chunk_appendf(msg, ", code: %d", code);
920
921 if (desc && *desc) {
Willy Tarreau83061a82018-07-13 11:56:34 +0200922 struct buffer src;
Emeric Brun5a133512017-10-19 14:42:30 +0200923
924 chunk_appendf(msg, ", info: \"");
925
926 chunk_initlen(&src, desc, 0, strlen(desc));
927 chunk_asciiencode(msg, &src, '"');
928
929 chunk_appendf(msg, "\"");
930 }
931
932 if (duration >= 0)
933 chunk_appendf(msg, ", check duration: %ldms", duration);
934 }
935 else if (desc && *desc) {
936 chunk_appendf(msg, ", %s", desc);
937 }
938 else if (!forced && s->track) {
Willy Tarreaubda92272014-05-20 21:55:30 +0200939 chunk_appendf(msg, " via %s/%s", s->track->proxy->id, s->track->id);
Emeric Brun5a133512017-10-19 14:42:30 +0200940 }
Willy Tarreaua0066dd2014-05-16 11:25:16 +0200941
942 if (xferred >= 0) {
Emeric Brun52a91d32017-08-31 14:41:55 +0200943 if (s->next_state == SRV_ST_STOPPED)
Willy Tarreaua0066dd2014-05-16 11:25:16 +0200944 chunk_appendf(msg, ". %d active and %d backup servers left.%s"
945 " %d sessions active, %d requeued, %d remaining in queue",
946 s->proxy->srv_act, s->proxy->srv_bck,
947 (s->proxy->srv_bck && !s->proxy->srv_act) ? " Running on backup." : "",
948 s->cur_sess, xferred, s->nbpend);
949 else
950 chunk_appendf(msg, ". %d active and %d backup servers online.%s"
951 " %d sessions requeued, %d total in queue",
952 s->proxy->srv_act, s->proxy->srv_bck,
953 (s->proxy->srv_bck && !s->proxy->srv_act) ? " Running on backup." : "",
954 xferred, s->nbpend);
955 }
956}
957
Emeric Brun5a133512017-10-19 14:42:30 +0200958/* Marks server <s> down, regardless of its checks' statuses. The server is
959 * registered in a list to postpone the counting of the remaining servers on
960 * the proxy and transfers queued streams whenever possible to other servers at
961 * a sync point. Maintenance servers are ignored. It stores the <reason> if
962 * non-null as the reason for going down or the available data from the check
963 * struct to recompute this reason later.
Willy Tarreau46b7f532018-08-21 11:54:26 +0200964 *
965 * Must be called with the server lock held.
Willy Tarreaue7d1ef12014-05-20 22:25:12 +0200966 */
Emeric Brun5a133512017-10-19 14:42:30 +0200967void srv_set_stopped(struct server *s, const char *reason, struct check *check)
Willy Tarreaue7d1ef12014-05-20 22:25:12 +0200968{
969 struct server *srv;
Willy Tarreaue7d1ef12014-05-20 22:25:12 +0200970
Emeric Brun64cc49c2017-10-03 14:46:45 +0200971 if ((s->cur_admin & SRV_ADMF_MAINT) || s->next_state == SRV_ST_STOPPED)
Willy Tarreaue7d1ef12014-05-20 22:25:12 +0200972 return;
973
Emeric Brun52a91d32017-08-31 14:41:55 +0200974 s->next_state = SRV_ST_STOPPED;
Emeric Brun5a133512017-10-19 14:42:30 +0200975 *s->op_st_chg.reason = 0;
976 s->op_st_chg.status = -1;
977 if (reason) {
978 strlcpy2(s->op_st_chg.reason, reason, sizeof(s->op_st_chg.reason));
979 }
980 else if (check) {
Willy Tarreau358847f2017-11-20 21:33:21 +0100981 strlcpy2(s->op_st_chg.reason, check->desc, sizeof(s->op_st_chg.reason));
Emeric Brun5a133512017-10-19 14:42:30 +0200982 s->op_st_chg.code = check->code;
983 s->op_st_chg.status = check->status;
984 s->op_st_chg.duration = check->duration;
985 }
Willy Tarreaue7d1ef12014-05-20 22:25:12 +0200986
Willy Tarreaueeba36b2018-08-21 08:22:26 +0200987 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +0200988 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +0200989
Emeric Brun9f0b4582017-10-23 14:39:51 +0200990 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100991 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Emeric Brun5a133512017-10-19 14:42:30 +0200992 srv_set_stopped(srv, NULL, NULL);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100993 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +0200994 }
Willy Tarreaue7d1ef12014-05-20 22:25:12 +0200995}
996
Willy Tarreaudbd5e782014-05-20 22:46:35 +0200997/* Marks server <s> up regardless of its checks' statuses and provided it isn't
Emeric Brun5a133512017-10-19 14:42:30 +0200998 * in maintenance. The server is registered in a list to postpone the counting
999 * of the remaining servers on the proxy and tries to grab requests from the
1000 * proxy at a sync point. Maintenance servers are ignored. It stores the
1001 * <reason> if non-null as the reason for going down or the available data
1002 * from the check struct to recompute this reason later.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001003 *
1004 * Must be called with the server lock held.
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001005 */
Emeric Brun5a133512017-10-19 14:42:30 +02001006void srv_set_running(struct server *s, const char *reason, struct check *check)
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001007{
1008 struct server *srv;
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001009
Emeric Brun64cc49c2017-10-03 14:46:45 +02001010 if (s->cur_admin & SRV_ADMF_MAINT)
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001011 return;
1012
Emeric Brun52a91d32017-08-31 14:41:55 +02001013 if (s->next_state == SRV_ST_STARTING || s->next_state == SRV_ST_RUNNING)
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001014 return;
1015
Emeric Brun52a91d32017-08-31 14:41:55 +02001016 s->next_state = SRV_ST_STARTING;
Emeric Brun5a133512017-10-19 14:42:30 +02001017 *s->op_st_chg.reason = 0;
1018 s->op_st_chg.status = -1;
1019 if (reason) {
1020 strlcpy2(s->op_st_chg.reason, reason, sizeof(s->op_st_chg.reason));
1021 }
1022 else if (check) {
Willy Tarreau358847f2017-11-20 21:33:21 +01001023 strlcpy2(s->op_st_chg.reason, check->desc, sizeof(s->op_st_chg.reason));
Emeric Brun5a133512017-10-19 14:42:30 +02001024 s->op_st_chg.code = check->code;
1025 s->op_st_chg.status = check->status;
1026 s->op_st_chg.duration = check->duration;
1027 }
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001028
Emeric Brun64cc49c2017-10-03 14:46:45 +02001029 if (s->slowstart <= 0)
1030 s->next_state = SRV_ST_RUNNING;
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001031
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001032 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001033 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001034
Emeric Brun9f0b4582017-10-23 14:39:51 +02001035 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001036 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Emeric Brun5a133512017-10-19 14:42:30 +02001037 srv_set_running(srv, NULL, NULL);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001038 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001039 }
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001040}
1041
Willy Tarreau8eb77842014-05-21 13:54:57 +02001042/* Marks server <s> stopping regardless of its checks' statuses and provided it
Emeric Brun5a133512017-10-19 14:42:30 +02001043 * isn't in maintenance. The server is registered in a list to postpone the
1044 * counting of the remaining servers on the proxy and tries to grab requests
1045 * from the proxy. Maintenance servers are ignored. It stores the
1046 * <reason> if non-null as the reason for going down or the available data
1047 * from the check struct to recompute this reason later.
Willy Tarreau8eb77842014-05-21 13:54:57 +02001048 * up. Note that it makes use of the trash to build the log strings, so <reason>
1049 * must not be placed there.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001050 *
1051 * Must be called with the server lock held.
Willy Tarreau8eb77842014-05-21 13:54:57 +02001052 */
Emeric Brun5a133512017-10-19 14:42:30 +02001053void srv_set_stopping(struct server *s, const char *reason, struct check *check)
Willy Tarreau8eb77842014-05-21 13:54:57 +02001054{
1055 struct server *srv;
Willy Tarreau8eb77842014-05-21 13:54:57 +02001056
Emeric Brun64cc49c2017-10-03 14:46:45 +02001057 if (s->cur_admin & SRV_ADMF_MAINT)
Willy Tarreau8eb77842014-05-21 13:54:57 +02001058 return;
1059
Emeric Brun52a91d32017-08-31 14:41:55 +02001060 if (s->next_state == SRV_ST_STOPPING)
Willy Tarreau8eb77842014-05-21 13:54:57 +02001061 return;
1062
Emeric Brun52a91d32017-08-31 14:41:55 +02001063 s->next_state = SRV_ST_STOPPING;
Emeric Brun5a133512017-10-19 14:42:30 +02001064 *s->op_st_chg.reason = 0;
1065 s->op_st_chg.status = -1;
1066 if (reason) {
1067 strlcpy2(s->op_st_chg.reason, reason, sizeof(s->op_st_chg.reason));
1068 }
1069 else if (check) {
Willy Tarreau358847f2017-11-20 21:33:21 +01001070 strlcpy2(s->op_st_chg.reason, check->desc, sizeof(s->op_st_chg.reason));
Emeric Brun5a133512017-10-19 14:42:30 +02001071 s->op_st_chg.code = check->code;
1072 s->op_st_chg.status = check->status;
1073 s->op_st_chg.duration = check->duration;
1074 }
Willy Tarreau8eb77842014-05-21 13:54:57 +02001075
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001076 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001077 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001078
Emeric Brun9f0b4582017-10-23 14:39:51 +02001079 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001080 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Emeric Brun5a133512017-10-19 14:42:30 +02001081 srv_set_stopping(srv, NULL, NULL);
Christopher Faulet8d01fd62018-01-24 21:49:41 +01001082 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001083 }
Willy Tarreau8eb77842014-05-21 13:54:57 +02001084}
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001085
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001086/* Enables admin flag <mode> (among SRV_ADMF_*) on server <s>. This is used to
1087 * enforce either maint mode or drain mode. It is not allowed to set more than
1088 * one flag at once. The equivalent "inherited" flag is propagated to all
1089 * tracking servers. Maintenance mode disables health checks (but not agent
1090 * checks). When either the flag is already set or no flag is passed, nothing
Willy Tarreau8b428482016-11-07 15:53:43 +01001091 * is done. If <cause> is non-null, it will be displayed at the end of the log
1092 * lines to justify the state change.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001093 *
1094 * Must be called with the server lock held.
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001095 */
Willy Tarreau8b428482016-11-07 15:53:43 +01001096void srv_set_admin_flag(struct server *s, enum srv_admin mode, const char *cause)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001097{
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001098 struct server *srv;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001099
1100 if (!mode)
1101 return;
1102
1103 /* stop going down as soon as we meet a server already in the same state */
Emeric Brun52a91d32017-08-31 14:41:55 +02001104 if (s->next_admin & mode)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001105 return;
1106
Emeric Brun52a91d32017-08-31 14:41:55 +02001107 s->next_admin |= mode;
Emeric Brun64cc49c2017-10-03 14:46:45 +02001108 if (cause)
1109 strlcpy2(s->adm_st_chg_cause, cause, sizeof(s->adm_st_chg_cause));
1110
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001111 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001112 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001113
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001114 /* stop going down if the equivalent flag was already present (forced or inherited) */
Emeric Brun52a91d32017-08-31 14:41:55 +02001115 if (((mode & SRV_ADMF_MAINT) && (s->next_admin & ~mode & SRV_ADMF_MAINT)) ||
1116 ((mode & SRV_ADMF_DRAIN) && (s->next_admin & ~mode & SRV_ADMF_DRAIN)))
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001117 return;
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001118
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001119 /* compute the inherited flag to propagate */
1120 if (mode & SRV_ADMF_MAINT)
1121 mode = SRV_ADMF_IMAINT;
1122 else if (mode & SRV_ADMF_DRAIN)
1123 mode = SRV_ADMF_IDRAIN;
1124
Emeric Brun9f0b4582017-10-23 14:39:51 +02001125 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001126 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Willy Tarreau8b428482016-11-07 15:53:43 +01001127 srv_set_admin_flag(srv, mode, cause);
Christopher Faulet8d01fd62018-01-24 21:49:41 +01001128 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001129 }
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001130}
1131
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001132/* Disables admin flag <mode> (among SRV_ADMF_*) on server <s>. This is used to
1133 * stop enforcing either maint mode or drain mode. It is not allowed to set more
1134 * than one flag at once. The equivalent "inherited" flag is propagated to all
1135 * tracking servers. Leaving maintenance mode re-enables health checks. When
1136 * either the flag is already cleared or no flag is passed, nothing is done.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001137 *
1138 * Must be called with the server lock held.
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001139 */
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001140void srv_clr_admin_flag(struct server *s, enum srv_admin mode)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001141{
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001142 struct server *srv;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001143
1144 if (!mode)
1145 return;
1146
1147 /* stop going down as soon as we see the flag is not there anymore */
Emeric Brun52a91d32017-08-31 14:41:55 +02001148 if (!(s->next_admin & mode))
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001149 return;
1150
Emeric Brun52a91d32017-08-31 14:41:55 +02001151 s->next_admin &= ~mode;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001152
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001153 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001154 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001155
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001156 /* stop going down if the equivalent flag is still present (forced or inherited) */
Emeric Brun52a91d32017-08-31 14:41:55 +02001157 if (((mode & SRV_ADMF_MAINT) && (s->next_admin & SRV_ADMF_MAINT)) ||
1158 ((mode & SRV_ADMF_DRAIN) && (s->next_admin & SRV_ADMF_DRAIN)))
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001159 return;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001160
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001161 if (mode & SRV_ADMF_MAINT)
1162 mode = SRV_ADMF_IMAINT;
1163 else if (mode & SRV_ADMF_DRAIN)
1164 mode = SRV_ADMF_IDRAIN;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001165
Emeric Brun9f0b4582017-10-23 14:39:51 +02001166 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001167 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001168 srv_clr_admin_flag(srv, mode);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001169 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001170 }
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001171}
1172
Willy Tarreau757478e2016-11-03 19:22:19 +01001173/* principle: propagate maint and drain to tracking servers. This is useful
1174 * upon startup so that inherited states are correct.
1175 */
1176static void srv_propagate_admin_state(struct server *srv)
1177{
1178 struct server *srv2;
1179
1180 if (!srv->trackers)
1181 return;
1182
1183 for (srv2 = srv->trackers; srv2; srv2 = srv2->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001184 HA_SPIN_LOCK(SERVER_LOCK, &srv2->lock);
Emeric Brun52a91d32017-08-31 14:41:55 +02001185 if (srv->next_admin & (SRV_ADMF_MAINT | SRV_ADMF_CMAINT))
Willy Tarreau8b428482016-11-07 15:53:43 +01001186 srv_set_admin_flag(srv2, SRV_ADMF_IMAINT, NULL);
Willy Tarreau757478e2016-11-03 19:22:19 +01001187
Emeric Brun52a91d32017-08-31 14:41:55 +02001188 if (srv->next_admin & SRV_ADMF_DRAIN)
Willy Tarreau8b428482016-11-07 15:53:43 +01001189 srv_set_admin_flag(srv2, SRV_ADMF_IDRAIN, NULL);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001190 HA_SPIN_UNLOCK(SERVER_LOCK, &srv2->lock);
Willy Tarreau757478e2016-11-03 19:22:19 +01001191 }
1192}
1193
1194/* Compute and propagate the admin states for all servers in proxy <px>.
1195 * Only servers *not* tracking another one are considered, because other
1196 * ones will be handled when the server they track is visited.
1197 */
1198void srv_compute_all_admin_states(struct proxy *px)
1199{
1200 struct server *srv;
1201
1202 for (srv = px->srv; srv; srv = srv->next) {
1203 if (srv->track)
1204 continue;
1205 srv_propagate_admin_state(srv);
1206 }
1207}
1208
Willy Tarreaudff55432012-10-10 17:51:05 +02001209/* Note: must not be declared <const> as its list will be overwritten.
1210 * Please take care of keeping this list alphabetically sorted, doing so helps
1211 * all code contributors.
1212 * Optional keywords are also declared with a NULL ->parse() function so that
1213 * the config parser can report an appropriate error when a known keyword was
1214 * not enabled.
Frédéric Lécailledfacd692017-04-16 17:14:14 +02001215 * Note: -1 as ->skip value means that the number of arguments are variable.
Willy Tarreaudff55432012-10-10 17:51:05 +02001216 */
1217static struct srv_kw_list srv_kws = { "ALL", { }, {
Frédéric Lécaille1502cfd2017-03-10 15:36:14 +01001218 { "backup", srv_parse_backup, 0, 1 }, /* Flag as backup server */
Frédéric Lécaille9d1b95b2017-03-15 09:13:33 +01001219 { "cookie", srv_parse_cookie, 1, 1 }, /* Assign a cookie to the server */
Frédéric Lécaille2a0d0612017-03-21 11:53:54 +01001220 { "disabled", srv_parse_disabled, 0, 1 }, /* Start the server in 'disabled' state */
1221 { "enabled", srv_parse_enabled, 0, 1 }, /* Start the server in 'enabled' state */
Frédéric Lécaille1502cfd2017-03-10 15:36:14 +01001222 { "id", srv_parse_id, 1, 0 }, /* set id# of server */
Willy Tarreau9c538e02019-01-23 10:21:49 +01001223 { "max-reuse", srv_parse_max_reuse, 1, 1 }, /* Set the max number of requests on a connection, -1 means unlimited */
Frédéric Lécaille22f41a22017-03-16 17:17:36 +01001224 { "namespace", srv_parse_namespace, 1, 1 }, /* Namespace the server socket belongs to (if supported) */
Frédéric Lécaille1502cfd2017-03-10 15:36:14 +01001225 { "no-backup", srv_parse_no_backup, 0, 1 }, /* Flag as non-backup server */
Frédéric Lécaille31045e42017-03-10 16:40:00 +01001226 { "no-send-proxy", srv_parse_no_send_proxy, 0, 1 }, /* Disable use of PROXY V1 protocol */
1227 { "no-send-proxy-v2", srv_parse_no_send_proxy_v2, 0, 1 }, /* Disable use of PROXY V2 protocol */
Frédéric Lécaille1b9423d2019-07-04 14:19:06 +02001228 { "no-tfo", srv_parse_no_tfo, 0, 1 }, /* Disable use of TCP Fast Open */
Frédéric Lécaillef9bc1d62017-03-10 15:50:49 +01001229 { "non-stick", srv_parse_non_stick, 0, 1 }, /* Disable stick-table persistence */
Frédéric Lécaille547356e2017-03-15 08:55:39 +01001230 { "observe", srv_parse_observe, 1, 1 }, /* Enables health adjusting based on observing communication with the server */
Willy Tarreau2f3f4d32020-07-01 07:43:51 +02001231 { "pool-low-conn", srv_parse_pool_low_conn, 1, 1 }, /* Set the min number of orphan idle connecbefore being allowed to pick from other threads */
Olivier Houchard006e3102018-12-10 18:30:32 +01001232 { "pool-max-conn", srv_parse_pool_max_conn, 1, 1 }, /* Set the max number of orphan idle connections, 0 means unlimited */
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01001233 { "pool-purge-delay", srv_parse_pool_purge_delay, 1, 1 }, /* Set the time before we destroy orphan idle connections, defaults to 1s */
Christopher Faulet8ed0a3e2018-04-10 14:45:45 +02001234 { "proto", srv_parse_proto, 1, 1 }, /* Set the proto to use for all outgoing connections */
Emmanuel Hocdetf643b802018-02-01 15:20:32 +01001235 { "proxy-v2-options", srv_parse_proxy_v2_options, 1, 1 }, /* options for send-proxy-v2 */
Frédéric Lécaille16186232017-03-14 16:42:49 +01001236 { "redir", srv_parse_redir, 1, 1 }, /* Enable redirection mode */
Frédéric Lécaille31045e42017-03-10 16:40:00 +01001237 { "send-proxy", srv_parse_send_proxy, 0, 1 }, /* Enforce use of PROXY V1 protocol */
1238 { "send-proxy-v2", srv_parse_send_proxy_v2, 0, 1 }, /* Enforce use of PROXY V2 protocol */
Frédéric Lécailledfacd692017-04-16 17:14:14 +02001239 { "source", srv_parse_source, -1, 1 }, /* Set the source address to be used to connect to the server */
Frédéric Lécaillef9bc1d62017-03-10 15:50:49 +01001240 { "stick", srv_parse_stick, 0, 1 }, /* Enable stick-table persistence */
Olivier Houchard8d82db72019-07-04 13:34:10 +02001241 { "tfo", srv_parse_tfo, 0, 1 }, /* enable TCP Fast Open of server */
Frédéric Lécaille67e0e612017-03-14 15:21:31 +01001242 { "track", srv_parse_track, 1, 1 }, /* Set the current state of the server, tracking another one */
Alexander Liu2a54bb72019-05-22 19:44:48 +08001243 { "socks4", srv_parse_socks4, 1, 1 }, /* Set the socks4 proxy of the server*/
Willy Tarreaudff55432012-10-10 17:51:05 +02001244 { NULL, NULL, 0 },
1245}};
1246
Willy Tarreau0108d902018-11-25 19:14:37 +01001247INITCALL1(STG_REGISTER, srv_register_keywords, &srv_kws);
Willy Tarreaudff55432012-10-10 17:51:05 +02001248
Willy Tarreau004e0452013-11-21 11:22:01 +01001249/* Recomputes the server's eweight based on its state, uweight, the current time,
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05001250 * and the proxy's algorithm. To be used after updating sv->uweight. The warmup
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001251 * state is automatically disabled if the time is elapsed. If <must_update> is
1252 * not zero, the update will be propagated immediately.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001253 *
1254 * Must be called with the server lock held.
Willy Tarreau004e0452013-11-21 11:22:01 +01001255 */
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001256void server_recalc_eweight(struct server *sv, int must_update)
Willy Tarreau004e0452013-11-21 11:22:01 +01001257{
1258 struct proxy *px = sv->proxy;
1259 unsigned w;
1260
1261 if (now.tv_sec < sv->last_change || now.tv_sec >= sv->last_change + sv->slowstart) {
1262 /* go to full throttle if the slowstart interval is reached */
Emeric Brun52a91d32017-08-31 14:41:55 +02001263 if (sv->next_state == SRV_ST_STARTING)
1264 sv->next_state = SRV_ST_RUNNING;
Willy Tarreau004e0452013-11-21 11:22:01 +01001265 }
1266
1267 /* We must take care of not pushing the server to full throttle during slow starts.
1268 * It must also start immediately, at least at the minimal step when leaving maintenance.
1269 */
Emeric Brun52a91d32017-08-31 14:41:55 +02001270 if ((sv->next_state == SRV_ST_STARTING) && (px->lbprm.algo & BE_LB_PROP_DYN))
Willy Tarreau004e0452013-11-21 11:22:01 +01001271 w = (px->lbprm.wdiv * (now.tv_sec - sv->last_change) + sv->slowstart) / sv->slowstart;
1272 else
1273 w = px->lbprm.wdiv;
1274
Emeric Brun52a91d32017-08-31 14:41:55 +02001275 sv->next_eweight = (sv->uweight * w + px->lbprm.wmult - 1) / px->lbprm.wmult;
Willy Tarreau004e0452013-11-21 11:22:01 +01001276
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001277 /* propagate changes only if needed (i.e. not recursively) */
Willy Tarreau49725a02018-08-21 19:54:09 +02001278 if (must_update)
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001279 srv_update_status(sv);
Willy Tarreau004e0452013-11-21 11:22:01 +01001280}
1281
Willy Tarreaubaaee002006-06-26 02:48:02 +02001282/*
Simon Horman7d09b9a2013-02-12 10:45:51 +09001283 * Parses weight_str and configures sv accordingly.
1284 * Returns NULL on success, error message string otherwise.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001285 *
1286 * Must be called with the server lock held.
Simon Horman7d09b9a2013-02-12 10:45:51 +09001287 */
1288const char *server_parse_weight_change_request(struct server *sv,
1289 const char *weight_str)
1290{
1291 struct proxy *px;
Simon Hormanb796afa2013-02-12 10:45:53 +09001292 long int w;
1293 char *end;
Simon Horman7d09b9a2013-02-12 10:45:51 +09001294
1295 px = sv->proxy;
1296
1297 /* if the weight is terminated with '%', it is set relative to
1298 * the initial weight, otherwise it is absolute.
1299 */
1300 if (!*weight_str)
1301 return "Require <weight> or <weight%>.\n";
1302
Simon Hormanb796afa2013-02-12 10:45:53 +09001303 w = strtol(weight_str, &end, 10);
1304 if (end == weight_str)
1305 return "Empty weight string empty or preceded by garbage";
1306 else if (end[0] == '%' && end[1] == '\0') {
Simon Horman58b5d292013-02-12 10:45:52 +09001307 if (w < 0)
Simon Horman7d09b9a2013-02-12 10:45:51 +09001308 return "Relative weight must be positive.\n";
Simon Horman58b5d292013-02-12 10:45:52 +09001309 /* Avoid integer overflow */
1310 if (w > 25600)
1311 w = 25600;
Simon Horman7d09b9a2013-02-12 10:45:51 +09001312 w = sv->iweight * w / 100;
Simon Horman58b5d292013-02-12 10:45:52 +09001313 if (w > 256)
1314 w = 256;
Simon Horman7d09b9a2013-02-12 10:45:51 +09001315 }
1316 else if (w < 0 || w > 256)
1317 return "Absolute weight can only be between 0 and 256 inclusive.\n";
Simon Hormanb796afa2013-02-12 10:45:53 +09001318 else if (end[0] != '\0')
1319 return "Trailing garbage in weight string";
Simon Horman7d09b9a2013-02-12 10:45:51 +09001320
1321 if (w && w != sv->iweight && !(px->lbprm.algo & BE_LB_PROP_DYN))
1322 return "Backend is using a static LB algorithm and only accepts weights '0%' and '100%'.\n";
1323
1324 sv->uweight = w;
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001325 server_recalc_eweight(sv, 1);
Simon Horman7d09b9a2013-02-12 10:45:51 +09001326
1327 return NULL;
1328}
1329
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001330/*
Thierry Fournier09a91782016-02-24 08:25:39 +01001331 * Parses <addr_str> and configures <sv> accordingly. <from> precise
1332 * the source of the change in the associated message log.
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001333 * Returns:
1334 * - error string on error
1335 * - NULL on success
Willy Tarreau46b7f532018-08-21 11:54:26 +02001336 *
1337 * Must be called with the server lock held.
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001338 */
1339const char *server_parse_addr_change_request(struct server *sv,
Thierry Fournier09a91782016-02-24 08:25:39 +01001340 const char *addr_str, const char *updater)
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001341{
1342 unsigned char ip[INET6_ADDRSTRLEN];
1343
1344 if (inet_pton(AF_INET6, addr_str, ip)) {
Thierry Fournier09a91782016-02-24 08:25:39 +01001345 update_server_addr(sv, ip, AF_INET6, updater);
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001346 return NULL;
1347 }
1348 if (inet_pton(AF_INET, addr_str, ip)) {
Thierry Fournier09a91782016-02-24 08:25:39 +01001349 update_server_addr(sv, ip, AF_INET, updater);
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001350 return NULL;
1351 }
1352
1353 return "Could not understand IP address format.\n";
1354}
1355
Willy Tarreau46b7f532018-08-21 11:54:26 +02001356/*
1357 * Must be called with the server lock held.
1358 */
Nenad Merdanovic174dd372016-04-24 23:10:06 +02001359const char *server_parse_maxconn_change_request(struct server *sv,
1360 const char *maxconn_str)
1361{
1362 long int v;
1363 char *end;
1364
1365 if (!*maxconn_str)
1366 return "Require <maxconn>.\n";
1367
1368 v = strtol(maxconn_str, &end, 10);
1369 if (end == maxconn_str)
1370 return "maxconn string empty or preceded by garbage";
1371 else if (end[0] != '\0')
1372 return "Trailing garbage in maxconn string";
1373
1374 if (sv->maxconn == sv->minconn) { // static maxconn
1375 sv->maxconn = sv->minconn = v;
1376 } else { // dynamic maxconn
1377 sv->maxconn = v;
1378 }
1379
1380 if (may_dequeue_tasks(sv, sv->proxy))
1381 process_srv_queue(sv);
1382
1383 return NULL;
1384}
1385
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001386#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001387static struct sample_expr *srv_sni_sample_parse_expr(struct server *srv, struct proxy *px,
1388 const char *file, int linenum, char **err)
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001389{
1390 int idx;
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001391 const char *args[] = {
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001392 srv->sni_expr,
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001393 NULL,
1394 };
1395
1396 idx = 0;
Olivier Houchard7d8e6882017-04-20 18:21:17 +02001397 px->conf.args.ctx = ARGC_SRV;
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001398
Willy Tarreaue3b57bf2020-02-14 16:50:14 +01001399 return sample_parse_expr((char **)args, &idx, file, linenum, err, &px->conf.args, NULL);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001400}
1401
1402static int server_parse_sni_expr(struct server *newsrv, struct proxy *px, char **err)
1403{
1404 struct sample_expr *expr;
1405
1406 expr = srv_sni_sample_parse_expr(newsrv, px, px->conf.file, px->conf.line, err);
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001407 if (!expr) {
1408 memprintf(err, "error detected while parsing sni expression : %s", *err);
1409 return ERR_ALERT | ERR_FATAL;
1410 }
1411
1412 if (!(expr->fetch->val & SMP_VAL_BE_SRV_CON)) {
1413 memprintf(err, "error detected while parsing sni expression : "
1414 " fetch method '%s' extracts information from '%s', "
1415 "none of which is available here.\n",
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001416 newsrv->sni_expr, sample_src_names(expr->fetch->use));
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001417 return ERR_ALERT | ERR_FATAL;
1418 }
1419
1420 px->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY);
1421 release_sample_expr(newsrv->ssl_ctx.sni);
1422 newsrv->ssl_ctx.sni = expr;
1423
1424 return 0;
1425}
1426#endif
1427
Gaetan Rivet10c4b4a2020-02-11 11:42:38 +01001428static void display_parser_err(const char *file, int linenum, char **args, int cur_arg, int err_code, char **err)
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001429{
Gaetan Rivet10c4b4a2020-02-11 11:42:38 +01001430 char *msg = "error encountered while processing ";
1431 char *quote = "'";
1432 char *token = args[cur_arg];
1433
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001434 if (err && *err) {
1435 indent_msg(err, 2);
Gaetan Rivet10c4b4a2020-02-11 11:42:38 +01001436 msg = *err;
1437 quote = "";
1438 token = "";
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001439 }
Gaetan Rivet10c4b4a2020-02-11 11:42:38 +01001440
1441 if (err_code & ERR_WARN && !(err_code & ERR_ALERT))
1442 ha_warning("parsing [%s:%d] : '%s %s' : %s%s%s%s.\n",
1443 file, linenum, args[0], args[1],
1444 msg, quote, token, quote);
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001445 else
Gaetan Rivet10c4b4a2020-02-11 11:42:38 +01001446 ha_alert("parsing [%s:%d] : '%s %s' : %s%s%s%s.\n",
1447 file, linenum, args[0], args[1],
1448 msg, quote, token, quote);
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001449}
1450
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001451static void srv_conn_src_sport_range_cpy(struct server *srv,
1452 struct server *src)
1453{
1454 int range_sz;
1455
1456 range_sz = src->conn_src.sport_range->size;
1457 if (range_sz > 0) {
1458 srv->conn_src.sport_range = port_range_alloc_range(range_sz);
1459 if (srv->conn_src.sport_range != NULL) {
1460 int i;
1461
1462 for (i = 0; i < range_sz; i++) {
1463 srv->conn_src.sport_range->ports[i] =
1464 src->conn_src.sport_range->ports[i];
1465 }
1466 }
1467 }
1468}
1469
1470/*
1471 * Copy <src> server connection source settings to <srv> server everything needed.
1472 */
1473static void srv_conn_src_cpy(struct server *srv, struct server *src)
1474{
1475 srv->conn_src.opts = src->conn_src.opts;
1476 srv->conn_src.source_addr = src->conn_src.source_addr;
1477
1478 /* Source port range copy. */
1479 if (src->conn_src.sport_range != NULL)
1480 srv_conn_src_sport_range_cpy(srv, src);
1481
1482#ifdef CONFIG_HAP_TRANSPARENT
1483 if (src->conn_src.bind_hdr_name != NULL) {
1484 srv->conn_src.bind_hdr_name = strdup(src->conn_src.bind_hdr_name);
1485 srv->conn_src.bind_hdr_len = strlen(src->conn_src.bind_hdr_name);
1486 }
1487 srv->conn_src.bind_hdr_occ = src->conn_src.bind_hdr_occ;
1488 srv->conn_src.tproxy_addr = src->conn_src.tproxy_addr;
1489#endif
1490 if (src->conn_src.iface_name != NULL)
1491 srv->conn_src.iface_name = strdup(src->conn_src.iface_name);
1492}
1493
1494/*
1495 * Copy <src> server SSL settings to <srv> server allocating
1496 * everything needed.
1497 */
1498#if defined(USE_OPENSSL)
1499static void srv_ssl_settings_cpy(struct server *srv, struct server *src)
1500{
1501 if (src->ssl_ctx.ca_file != NULL)
1502 srv->ssl_ctx.ca_file = strdup(src->ssl_ctx.ca_file);
1503 if (src->ssl_ctx.crl_file != NULL)
1504 srv->ssl_ctx.crl_file = strdup(src->ssl_ctx.crl_file);
1505 if (src->ssl_ctx.client_crt != NULL)
1506 srv->ssl_ctx.client_crt = strdup(src->ssl_ctx.client_crt);
1507
1508 srv->ssl_ctx.verify = src->ssl_ctx.verify;
1509
1510 if (src->ssl_ctx.verify_host != NULL)
1511 srv->ssl_ctx.verify_host = strdup(src->ssl_ctx.verify_host);
1512 if (src->ssl_ctx.ciphers != NULL)
1513 srv->ssl_ctx.ciphers = strdup(src->ssl_ctx.ciphers);
Jerome Magnin2e8d52f2020-04-22 11:40:18 +02001514 if (src->ssl_ctx.options)
1515 srv->ssl_ctx.options = src->ssl_ctx.options;
1516 if (src->ssl_ctx.methods.flags)
1517 srv->ssl_ctx.methods.flags = src->ssl_ctx.methods.flags;
1518 if (src->ssl_ctx.methods.min)
1519 srv->ssl_ctx.methods.min = src->ssl_ctx.methods.min;
1520 if (src->ssl_ctx.methods.max)
1521 srv->ssl_ctx.methods.max = src->ssl_ctx.methods.max;
1522
Willy Tarreau5db847a2019-05-09 14:13:35 +02001523#if (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L && !defined OPENSSL_IS_BORINGSSL)
Dirkjan Bussink415150f2018-09-14 11:14:21 +02001524 if (src->ssl_ctx.ciphersuites != NULL)
1525 srv->ssl_ctx.ciphersuites = strdup(src->ssl_ctx.ciphersuites);
1526#endif
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001527 if (src->sni_expr != NULL)
1528 srv->sni_expr = strdup(src->sni_expr);
Olivier Houchardc7566002018-11-20 23:33:50 +01001529
1530#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
1531 if (src->ssl_ctx.alpn_str) {
1532 srv->ssl_ctx.alpn_str = malloc(src->ssl_ctx.alpn_len);
1533 if (srv->ssl_ctx.alpn_str) {
1534 memcpy(srv->ssl_ctx.alpn_str, src->ssl_ctx.alpn_str,
1535 src->ssl_ctx.alpn_len);
1536 srv->ssl_ctx.alpn_len = src->ssl_ctx.alpn_len;
1537 }
1538 }
1539#endif
1540#ifdef OPENSSL_NPN_NEGOTIATED
1541 if (src->ssl_ctx.npn_str) {
1542 srv->ssl_ctx.npn_str = malloc(src->ssl_ctx.npn_len);
1543 if (srv->ssl_ctx.npn_str) {
1544 memcpy(srv->ssl_ctx.npn_str, src->ssl_ctx.npn_str,
1545 src->ssl_ctx.npn_len);
1546 srv->ssl_ctx.npn_len = src->ssl_ctx.npn_len;
1547 }
1548 }
1549#endif
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001550}
1551#endif
1552
1553/*
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001554 * Prepare <srv> for hostname resolution.
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001555 * May be safely called with a default server as <src> argument (without hostname).
Frédéric Lécailleb418c122017-04-26 11:24:02 +02001556 * Returns -1 in case of any allocation failure, 0 if not.
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001557 */
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001558static int srv_prepare_for_resolution(struct server *srv, const char *hostname)
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001559{
Christopher Faulet67957bd2017-09-27 11:00:59 +02001560 char *hostname_dn;
1561 int hostname_len, hostname_dn_len;
1562
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001563 if (!hostname)
Frédéric Lécailleb418c122017-04-26 11:24:02 +02001564 return 0;
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001565
Christopher Faulet67957bd2017-09-27 11:00:59 +02001566 hostname_len = strlen(hostname);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001567 hostname_dn = trash.area;
Christopher Faulet67957bd2017-09-27 11:00:59 +02001568 hostname_dn_len = dns_str_to_dn_label(hostname, hostname_len + 1,
1569 hostname_dn, trash.size);
1570 if (hostname_dn_len == -1)
1571 goto err;
Baptiste Assmann81ed1a02017-05-03 10:11:44 +02001572
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001573
Christopher Faulet67957bd2017-09-27 11:00:59 +02001574 free(srv->hostname);
1575 free(srv->hostname_dn);
1576 srv->hostname = strdup(hostname);
1577 srv->hostname_dn = strdup(hostname_dn);
1578 srv->hostname_dn_len = hostname_dn_len;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001579 if (!srv->hostname || !srv->hostname_dn)
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001580 goto err;
1581
Frédéric Lécailleb418c122017-04-26 11:24:02 +02001582 return 0;
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001583
1584 err:
Christopher Faulet67957bd2017-09-27 11:00:59 +02001585 free(srv->hostname); srv->hostname = NULL;
1586 free(srv->hostname_dn); srv->hostname_dn = NULL;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02001587 return -1;
1588}
1589
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001590/*
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001591 * Copy <src> server settings to <srv> server allocating
1592 * everything needed.
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001593 * This function is not supposed to be called at any time, but only
1594 * during server settings parsing or during server allocations from
1595 * a server template, and just after having calloc()'ed a new server.
1596 * So, <src> may only be a default server (when parsing server settings)
1597 * or a server template (during server allocations from a server template).
1598 * <srv_tmpl> distinguishes these two cases (must be 1 if <srv> is a template,
1599 * 0 if not).
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001600 */
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001601static void srv_settings_cpy(struct server *srv, struct server *src, int srv_tmpl)
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001602{
1603 /* Connection source settings copy */
1604 srv_conn_src_cpy(srv, src);
1605
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001606 if (srv_tmpl) {
1607 srv->addr = src->addr;
1608 srv->svc_port = src->svc_port;
1609 }
1610
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001611 srv->pp_opts = src->pp_opts;
1612 if (src->rdr_pfx != NULL) {
1613 srv->rdr_pfx = strdup(src->rdr_pfx);
1614 srv->rdr_len = src->rdr_len;
1615 }
1616 if (src->cookie != NULL) {
1617 srv->cookie = strdup(src->cookie);
1618 srv->cklen = src->cklen;
1619 }
1620 srv->use_ssl = src->use_ssl;
Willy Tarreau24441082019-12-11 15:43:45 +01001621 srv->check.addr = src->check.addr;
1622 srv->agent.addr = src->agent.addr;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001623 srv->check.use_ssl = src->check.use_ssl;
1624 srv->check.port = src->check.port;
Olivier Houchard21944012018-12-21 19:42:01 +01001625 srv->check.sni = src->check.sni;
Olivier Houchard92150142018-12-21 19:47:01 +01001626 srv->check.alpn_str = src->check.alpn_str;
Ilya Shipitsin0c50b1e2019-04-30 21:21:28 +05001627 srv->check.alpn_len = src->check.alpn_len;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001628 /* Note: 'flags' field has potentially been already initialized. */
1629 srv->flags |= src->flags;
1630 srv->do_check = src->do_check;
1631 srv->do_agent = src->do_agent;
1632 if (srv->check.port)
1633 srv->flags |= SRV_F_CHECKPORT;
1634 srv->check.inter = src->check.inter;
1635 srv->check.fastinter = src->check.fastinter;
1636 srv->check.downinter = src->check.downinter;
1637 srv->agent.use_ssl = src->agent.use_ssl;
1638 srv->agent.port = src->agent.port;
Christopher Faulet0ae3d1d2020-04-06 17:54:24 +02001639
1640 if (src->agent.tcpcheck_rules) {
1641 srv->agent.tcpcheck_rules = calloc(1, sizeof(*srv->agent.tcpcheck_rules));
1642 if (srv->agent.tcpcheck_rules) {
1643 srv->agent.tcpcheck_rules->flags = src->agent.tcpcheck_rules->flags;
1644 srv->agent.tcpcheck_rules->list = src->agent.tcpcheck_rules->list;
1645 LIST_INIT(&srv->agent.tcpcheck_rules->preset_vars);
1646 dup_tcpcheck_vars(&srv->agent.tcpcheck_rules->preset_vars,
1647 &src->agent.tcpcheck_rules->preset_vars);
1648 }
1649 }
1650
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001651 srv->agent.inter = src->agent.inter;
1652 srv->agent.fastinter = src->agent.fastinter;
1653 srv->agent.downinter = src->agent.downinter;
1654 srv->maxqueue = src->maxqueue;
1655 srv->minconn = src->minconn;
1656 srv->maxconn = src->maxconn;
1657 srv->slowstart = src->slowstart;
1658 srv->observe = src->observe;
1659 srv->onerror = src->onerror;
1660 srv->onmarkeddown = src->onmarkeddown;
1661 srv->onmarkedup = src->onmarkedup;
1662 if (src->trackit != NULL)
1663 srv->trackit = strdup(src->trackit);
1664 srv->consecutive_errors_limit = src->consecutive_errors_limit;
1665 srv->uweight = srv->iweight = src->iweight;
1666
1667 srv->check.send_proxy = src->check.send_proxy;
1668 /* health: up, but will fall down at first failure */
1669 srv->check.rise = srv->check.health = src->check.rise;
1670 srv->check.fall = src->check.fall;
1671
1672 /* Here we check if 'disabled' is the default server state */
Emeric Brun52a91d32017-08-31 14:41:55 +02001673 if (src->next_admin & (SRV_ADMF_CMAINT | SRV_ADMF_FMAINT)) {
1674 srv->next_admin |= SRV_ADMF_CMAINT | SRV_ADMF_FMAINT;
1675 srv->next_state = SRV_ST_STOPPED;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001676 srv->check.state |= CHK_ST_PAUSED;
1677 srv->check.health = 0;
1678 }
1679
1680 /* health: up but will fall down at first failure */
1681 srv->agent.rise = srv->agent.health = src->agent.rise;
1682 srv->agent.fall = src->agent.fall;
1683
1684 if (src->resolvers_id != NULL)
1685 srv->resolvers_id = strdup(src->resolvers_id);
1686 srv->dns_opts.family_prio = src->dns_opts.family_prio;
Baptiste Assmann8e2d9432018-06-22 15:04:43 +02001687 srv->dns_opts.accept_duplicate_ip = src->dns_opts.accept_duplicate_ip;
Daniel Corbettf8716912019-11-17 09:48:56 -05001688 srv->dns_opts.ignore_weight = src->dns_opts.ignore_weight;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001689 if (srv->dns_opts.family_prio == AF_UNSPEC)
1690 srv->dns_opts.family_prio = AF_INET6;
1691 memcpy(srv->dns_opts.pref_net,
1692 src->dns_opts.pref_net,
1693 sizeof srv->dns_opts.pref_net);
1694 srv->dns_opts.pref_net_nb = src->dns_opts.pref_net_nb;
1695
1696 srv->init_addr_methods = src->init_addr_methods;
1697 srv->init_addr = src->init_addr;
1698#if defined(USE_OPENSSL)
1699 srv_ssl_settings_cpy(srv, src);
1700#endif
1701#ifdef TCP_USER_TIMEOUT
1702 srv->tcp_ut = src->tcp_ut;
1703#endif
Christopher Faulet8ed0a3e2018-04-10 14:45:45 +02001704 srv->mux_proto = src->mux_proto;
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01001705 srv->pool_purge_delay = src->pool_purge_delay;
Willy Tarreau2f3f4d32020-07-01 07:43:51 +02001706 srv->low_idle_conns = src->low_idle_conns;
Olivier Houchard006e3102018-12-10 18:30:32 +01001707 srv->max_idle_conns = src->max_idle_conns;
Willy Tarreau9c538e02019-01-23 10:21:49 +01001708 srv->max_reuse = src->max_reuse;
Christopher Faulet8ed0a3e2018-04-10 14:45:45 +02001709
Olivier Houchard8da5f982017-08-04 18:35:36 +02001710 if (srv_tmpl)
1711 srv->srvrq = src->srvrq;
Alexander Liu2a54bb72019-05-22 19:44:48 +08001712
1713 srv->check.via_socks4 = src->check.via_socks4;
1714 srv->socks4_addr = src->socks4_addr;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001715}
1716
William Lallemand313bfd12018-10-26 14:47:32 +02001717struct server *new_server(struct proxy *proxy)
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001718{
1719 struct server *srv;
1720
1721 srv = calloc(1, sizeof *srv);
1722 if (!srv)
1723 return NULL;
1724
1725 srv->obj_type = OBJ_TYPE_SERVER;
1726 srv->proxy = proxy;
1727 LIST_INIT(&srv->actconns);
Patrick Hemmer0355dab2018-05-11 12:52:31 -04001728 srv->pendconns = EB_ROOT;
Christopher Faulet40a007c2017-07-03 15:41:01 +02001729
Emeric Brun52a91d32017-08-31 14:41:55 +02001730 srv->next_state = SRV_ST_RUNNING; /* early server setup */
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001731 srv->last_change = now.tv_sec;
1732
Christopher Faulet38290462020-04-21 11:46:40 +02001733 srv->check.obj_type = OBJ_TYPE_CHECK;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001734 srv->check.status = HCHK_STATUS_INI;
1735 srv->check.server = srv;
Olivier Houchardc98aa1f2019-01-11 18:17:17 +01001736 srv->check.proxy = proxy;
Christopher Faulet5d503fc2020-03-30 20:34:34 +02001737 srv->check.tcpcheck_rules = &proxy->tcpcheck_rules;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001738
Christopher Faulet38290462020-04-21 11:46:40 +02001739 srv->agent.obj_type = OBJ_TYPE_CHECK;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001740 srv->agent.status = HCHK_STATUS_INI;
1741 srv->agent.server = srv;
Willy Tarreau1ba32032019-01-21 07:48:26 +01001742 srv->agent.proxy = proxy;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001743 srv->xprt = srv->check.xprt = srv->agent.xprt = xprt_get(XPRT_RAW);
1744
Willy Tarreau975b1552019-06-06 16:25:55 +02001745 /* please don't put default server settings here, they are set in
1746 * init_default_instance().
1747 */
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001748 return srv;
1749}
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001750
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001751#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
1752static int server_sni_expr_init(const char *file, int linenum, char **args, int cur_arg,
1753 struct server *srv, struct proxy *proxy)
1754{
1755 int ret;
1756 char *err = NULL;
1757
1758 if (!srv->sni_expr)
1759 return 0;
1760
1761 ret = server_parse_sni_expr(srv, proxy, &err);
1762 if (!ret)
1763 return 0;
1764
Gaetan Rivet10c4b4a2020-02-11 11:42:38 +01001765 display_parser_err(file, linenum, args, cur_arg, ret, &err);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001766 free(err);
1767
1768 return ret;
1769}
1770#endif
1771
1772/*
1773 * Server initializations finalization.
1774 * Initialize health check, agent check and SNI expression if enabled.
1775 * Must not be called for a default server instance.
1776 */
1777static int server_finalize_init(const char *file, int linenum, char **args, int cur_arg,
1778 struct server *srv, struct proxy *px)
1779{
Christopher Fauletb3b53522020-04-27 11:17:10 +02001780#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001781 int ret;
Christopher Fauletb3b53522020-04-27 11:17:10 +02001782#endif
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001783
Christopher Faulet8892e5d2020-03-26 19:48:20 +01001784 if (srv->do_check && srv->trackit) {
1785 ha_alert("parsing [%s:%d]: unable to enable checks and tracking at the same time!\n",
1786 file, linenum);
1787 return ERR_ALERT | ERR_FATAL;
1788 }
1789
1790 if (srv->do_agent && !srv->agent.port) {
1791 ha_alert("parsing [%s:%d] : server %s does not have agent port. Agent check has been disabled.\n",
1792 file, linenum, srv->id);
1793 return ERR_ALERT | ERR_FATAL;
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001794 }
1795
1796#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
1797 if ((ret = server_sni_expr_init(file, linenum, args, cur_arg, srv, px)) != 0)
1798 return ret;
1799#endif
1800
1801 if (srv->flags & SRV_F_BACKUP)
1802 px->srv_bck++;
1803 else
1804 px->srv_act++;
1805 srv_lb_commit_status(srv);
1806
1807 return 0;
1808}
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001809
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001810/*
1811 * Parse as much as possible such a range string argument: low[-high]
1812 * Set <nb_low> and <nb_high> values so that they may be reused by this loop
1813 * for(int i = nb_low; i <= nb_high; i++)... with nb_low >= 1.
1814 * Fails if 'low' < 0 or 'high' is present and not higher than 'low'.
1815 * Returns 0 if succeeded, -1 if not.
1816 */
1817static int srv_tmpl_parse_range(struct server *srv, const char *arg, int *nb_low, int *nb_high)
1818{
1819 char *nb_high_arg;
1820
1821 *nb_high = 0;
1822 chunk_printf(&trash, "%s", arg);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001823 *nb_low = atoi(trash.area);
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001824
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001825 if ((nb_high_arg = strchr(trash.area, '-'))) {
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001826 *nb_high_arg++ = '\0';
1827 *nb_high = atoi(nb_high_arg);
1828 }
1829 else {
1830 *nb_high += *nb_low;
1831 *nb_low = 1;
1832 }
1833
1834 if (*nb_low < 0 || *nb_high < *nb_low)
1835 return -1;
1836
1837 return 0;
1838}
1839
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001840static inline void srv_set_id_from_prefix(struct server *srv, const char *prefix, int nb)
1841{
1842 chunk_printf(&trash, "%s%d", prefix, nb);
1843 free(srv->id);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001844 srv->id = strdup(trash.area);
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001845}
1846
1847/*
1848 * Initialize as much as possible servers from <srv> server template.
1849 * Note that a server template is a special server with
1850 * a few different parameters than a server which has
1851 * been parsed mostly the same way as a server.
Joseph Herlant44466822018-11-15 08:57:51 -08001852 * Returns the number of servers successfully allocated,
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001853 * 'srv' template included.
1854 */
1855static int server_template_init(struct server *srv, struct proxy *px)
1856{
1857 int i;
1858 struct server *newsrv;
1859
1860 for (i = srv->tmpl_info.nb_low + 1; i <= srv->tmpl_info.nb_high; i++) {
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001861 newsrv = new_server(px);
1862 if (!newsrv)
1863 goto err;
1864
1865 srv_settings_cpy(newsrv, srv, 1);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001866 srv_prepare_for_resolution(newsrv, srv->hostname);
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001867#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
1868 if (newsrv->sni_expr) {
1869 newsrv->ssl_ctx.sni = srv_sni_sample_parse_expr(newsrv, px, NULL, 0, NULL);
1870 if (!newsrv->ssl_ctx.sni)
1871 goto err;
1872 }
1873#endif
1874 /* Set this new server ID. */
1875 srv_set_id_from_prefix(newsrv, srv->tmpl_info.prefix, i);
1876
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001877 /* Linked backwards first. This will be restablished after parsing. */
1878 newsrv->next = px->srv;
1879 px->srv = newsrv;
1880 }
1881 srv_set_id_from_prefix(srv, srv->tmpl_info.prefix, srv->tmpl_info.nb_low);
1882
1883 return i - srv->tmpl_info.nb_low;
1884
1885 err:
1886 srv_set_id_from_prefix(srv, srv->tmpl_info.prefix, srv->tmpl_info.nb_low);
1887 if (newsrv) {
1888#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
1889 release_sample_expr(newsrv->ssl_ctx.sni);
1890#endif
1891 free_check(&newsrv->agent);
1892 free_check(&newsrv->check);
1893 }
1894 free(newsrv);
1895 return i - srv->tmpl_info.nb_low;
1896}
1897
Emeric Brund3db3842020-07-21 16:54:36 +02001898int parse_server(const char *file, int linenum, char **args, struct proxy *curproxy,
1899 struct proxy *defproxy, int parse_addr, int in_peers_section, int initial_resolve)
Willy Tarreau272adea2014-03-31 10:39:59 +02001900{
1901 struct server *newsrv = NULL;
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001902 const char *err = NULL;
Willy Tarreau272adea2014-03-31 10:39:59 +02001903 char *errmsg = NULL;
1904 int err_code = 0;
1905 unsigned val;
Willy Tarreau07101d52015-09-08 16:16:35 +02001906 char *fqdn = NULL;
Willy Tarreau272adea2014-03-31 10:39:59 +02001907
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001908 if (!strcmp(args[0], "server") ||
Frédéric Lécaillec06b5d42018-04-26 10:06:41 +02001909 !strcmp(args[0], "peer") ||
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001910 !strcmp(args[0], "default-server") ||
1911 !strcmp(args[0], "server-template")) {
Willy Tarreau272adea2014-03-31 10:39:59 +02001912 int cur_arg;
Frédéric Lécaille6e0843c2017-03-21 16:39:15 +01001913 int defsrv = (*args[0] == 'd');
Frédéric Lécaillec06b5d42018-04-26 10:06:41 +02001914 int srv = !defsrv && (*args[0] == 'p' || !strcmp(args[0], "server"));
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001915 int srv_tmpl = !defsrv && !srv;
1916 int tmpl_range_low = 0, tmpl_range_high = 0;
Willy Tarreau272adea2014-03-31 10:39:59 +02001917
1918 if (!defsrv && curproxy == defproxy) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001919 ha_alert("parsing [%s:%d] : '%s' not allowed in 'defaults' section.\n", file, linenum, args[0]);
Willy Tarreau272adea2014-03-31 10:39:59 +02001920 err_code |= ERR_ALERT | ERR_FATAL;
1921 goto out;
1922 }
1923 else if (warnifnotcap(curproxy, PR_CAP_BE, file, linenum, args[0], NULL))
Olivier Houchard306e6532018-07-24 16:48:59 +02001924 err_code |= ERR_WARN;
Willy Tarreau272adea2014-03-31 10:39:59 +02001925
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001926 /* There is no mandatory first arguments for default server. */
Frédéric Lécaille355b2032019-01-11 14:06:12 +01001927 if (srv && parse_addr) {
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001928 if (!*args[2]) {
Frédéric Lécaille8ba10fe2020-04-03 09:43:47 +02001929 if (in_peers_section) {
1930 return 0;
1931 }
1932 else {
1933 /* 'server' line number of argument check. */
1934 ha_alert("parsing [%s:%d] : '%s' expects <name> and <addr>[:<port>] as arguments.\n",
1935 file, linenum, args[0]);
1936 err_code |= ERR_ALERT | ERR_FATAL;
1937 goto out;
1938 }
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001939 }
1940
1941 err = invalid_char(args[1]);
1942 }
1943 else if (srv_tmpl) {
1944 if (!*args[3]) {
1945 /* 'server-template' line number of argument check. */
Christopher Faulet767a84b2017-11-24 16:50:31 +01001946 ha_alert("parsing [%s:%d] : '%s' expects <prefix> <nb | range> <addr>[:<port>] as arguments.\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001947 file, linenum, args[0]);
1948 err_code |= ERR_ALERT | ERR_FATAL;
1949 goto out;
1950 }
1951
1952 err = invalid_prefix_char(args[1]);
Willy Tarreau272adea2014-03-31 10:39:59 +02001953 }
1954
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001955 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001956 ha_alert("parsing [%s:%d] : character '%c' is not permitted in %s %s '%s'.\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001957 file, linenum, *err, args[0], srv ? "name" : "prefix", args[1]);
Willy Tarreau272adea2014-03-31 10:39:59 +02001958 err_code |= ERR_ALERT | ERR_FATAL;
1959 goto out;
1960 }
1961
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001962 cur_arg = 2;
1963 if (srv_tmpl) {
1964 /* Parse server-template <nb | range> arg. */
1965 if (srv_tmpl_parse_range(newsrv, args[cur_arg], &tmpl_range_low, &tmpl_range_high) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001966 ha_alert("parsing [%s:%d] : Wrong %s number or range arg '%s'.\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001967 file, linenum, args[0], args[cur_arg]);
1968 err_code |= ERR_ALERT | ERR_FATAL;
1969 goto out;
1970 }
1971 cur_arg++;
1972 }
1973
Willy Tarreau272adea2014-03-31 10:39:59 +02001974 if (!defsrv) {
1975 struct sockaddr_storage *sk;
Willy Tarreau6ecb10a2017-01-06 18:36:06 +01001976 int port1, port2, port;
Willy Tarreau272adea2014-03-31 10:39:59 +02001977
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001978 newsrv = new_server(curproxy);
1979 if (!newsrv) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001980 ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
Willy Tarreau272adea2014-03-31 10:39:59 +02001981 err_code |= ERR_ALERT | ERR_ABORT;
1982 goto out;
1983 }
1984
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001985 if (srv_tmpl) {
1986 newsrv->tmpl_info.nb_low = tmpl_range_low;
1987 newsrv->tmpl_info.nb_high = tmpl_range_high;
1988 }
1989
Willy Tarreau272adea2014-03-31 10:39:59 +02001990 /* the servers are linked backwards first */
1991 newsrv->next = curproxy->srv;
1992 curproxy->srv = newsrv;
Willy Tarreau272adea2014-03-31 10:39:59 +02001993 newsrv->conf.file = strdup(file);
1994 newsrv->conf.line = linenum;
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02001995 /* Note: for a server template, its id is its prefix.
1996 * This is a temporary id which will be used for server allocations to come
1997 * after parsing.
1998 */
1999 if (srv)
2000 newsrv->id = strdup(args[1]);
2001 else
2002 newsrv->tmpl_info.prefix = strdup(args[1]);
Willy Tarreau272adea2014-03-31 10:39:59 +02002003
2004 /* several ways to check the port component :
2005 * - IP => port=+0, relative (IPv4 only)
2006 * - IP: => port=+0, relative
2007 * - IP:N => port=N, absolute
2008 * - IP:+N => port=+N, relative
2009 * - IP:-N => port=-N, relative
2010 */
Frédéric Lécaille355b2032019-01-11 14:06:12 +01002011 if (!parse_addr)
2012 goto skip_addr;
2013
Willy Tarreau65ec4e32020-09-16 19:17:08 +02002014 sk = str2sa_range(args[cur_arg], &port, &port1, &port2, NULL, NULL,
2015 &errmsg, NULL, &fqdn,
2016 (initial_resolve ? PA_O_RESOLVE : 0) | PA_O_PORT_OK | PA_O_PORT_OFS | PA_O_STREAM | PA_O_XPRT | PA_O_CONNECT);
Willy Tarreau272adea2014-03-31 10:39:59 +02002017 if (!sk) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002018 ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], errmsg);
Willy Tarreau272adea2014-03-31 10:39:59 +02002019 err_code |= ERR_ALERT | ERR_FATAL;
2020 goto out;
2021 }
2022
Willy Tarreau272adea2014-03-31 10:39:59 +02002023 if (!port1 || !port2) {
2024 /* no port specified, +offset, -offset */
Willy Tarreauc93cd162014-05-13 15:54:22 +02002025 newsrv->flags |= SRV_F_MAPPORTS;
Willy Tarreau272adea2014-03-31 10:39:59 +02002026 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002027
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002028 /* save hostname and create associated name resolution */
Baptiste Assmann4f91f7e2017-05-03 12:09:54 +02002029 if (fqdn) {
Christopher Faulet67957bd2017-09-27 11:00:59 +02002030 if (fqdn[0] == '_') { /* SRV record */
Olivier Houchard8da5f982017-08-04 18:35:36 +02002031 /* Check if a SRV request already exists, and if not, create it */
Christopher Faulet67957bd2017-09-27 11:00:59 +02002032 if ((newsrv->srvrq = find_srvrq_by_name(fqdn, curproxy)) == NULL)
2033 newsrv->srvrq = new_dns_srvrq(newsrv, fqdn);
2034 if (newsrv->srvrq == NULL) {
Olivier Houchard8da5f982017-08-04 18:35:36 +02002035 err_code |= ERR_ALERT | ERR_FATAL;
2036 goto out;
Christopher Faulet67957bd2017-09-27 11:00:59 +02002037 }
2038 }
2039 else if (srv_prepare_for_resolution(newsrv, fqdn) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002040 ha_alert("parsing [%s:%d] : Can't create DNS resolution for server '%s'\n",
Christopher Faulet67957bd2017-09-27 11:00:59 +02002041 file, linenum, newsrv->id);
2042 err_code |= ERR_ALERT | ERR_FATAL;
2043 goto out;
Baptiste Assmann4f91f7e2017-05-03 12:09:54 +02002044 }
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002045 }
2046
Willy Tarreau272adea2014-03-31 10:39:59 +02002047 newsrv->addr = *sk;
Willy Tarreau6ecb10a2017-01-06 18:36:06 +01002048 newsrv->svc_port = port;
Willy Tarreau272adea2014-03-31 10:39:59 +02002049
Olivier Houchard8da5f982017-08-04 18:35:36 +02002050 if (!newsrv->srvrq && !newsrv->hostname && !protocol_by_family(newsrv->addr.ss_family)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002051 ha_alert("parsing [%s:%d] : Unknown protocol family %d '%s'\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002052 file, linenum, newsrv->addr.ss_family, args[cur_arg]);
Willy Tarreau272adea2014-03-31 10:39:59 +02002053 err_code |= ERR_ALERT | ERR_FATAL;
2054 goto out;
2055 }
Frédéric Lécaille5c3cd972017-03-15 16:36:09 +01002056
Frédéric Lécaille355b2032019-01-11 14:06:12 +01002057 cur_arg++;
2058 skip_addr:
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02002059 /* Copy default server settings to new server settings. */
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002060 srv_settings_cpy(newsrv, &curproxy->defsrv, 0);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002061 HA_SPIN_INIT(&newsrv->lock);
Willy Tarreau272adea2014-03-31 10:39:59 +02002062 } else {
2063 newsrv = &curproxy->defsrv;
2064 cur_arg = 1;
Thierry Fournierada34842016-02-17 21:25:09 +01002065 newsrv->dns_opts.family_prio = AF_INET6;
Baptiste Assmann8e2d9432018-06-22 15:04:43 +02002066 newsrv->dns_opts.accept_duplicate_ip = 0;
Willy Tarreau272adea2014-03-31 10:39:59 +02002067 }
2068
2069 while (*args[cur_arg]) {
Christopher Fauletcbba66c2020-04-06 14:26:30 +02002070 if (!strcmp(args[cur_arg], "init-addr")) {
Baptiste Assmann25938272016-09-21 20:26:16 +02002071 char *p, *end;
2072 int done;
Willy Tarreau4310d362016-11-02 15:05:56 +01002073 struct sockaddr_storage sa;
Baptiste Assmann25938272016-09-21 20:26:16 +02002074
2075 newsrv->init_addr_methods = 0;
2076 memset(&newsrv->init_addr, 0, sizeof(newsrv->init_addr));
2077
2078 for (p = args[cur_arg + 1]; *p; p = end) {
2079 /* cut on next comma */
2080 for (end = p; *end && *end != ','; end++);
2081 if (*end)
2082 *(end++) = 0;
2083
Willy Tarreau4310d362016-11-02 15:05:56 +01002084 memset(&sa, 0, sizeof(sa));
Baptiste Assmann25938272016-09-21 20:26:16 +02002085 if (!strcmp(p, "libc")) {
2086 done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_LIBC);
2087 }
2088 else if (!strcmp(p, "last")) {
2089 done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_LAST);
2090 }
Willy Tarreau37ebe122016-11-04 15:17:58 +01002091 else if (!strcmp(p, "none")) {
2092 done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_NONE);
2093 }
Willy Tarreau4310d362016-11-02 15:05:56 +01002094 else if (str2ip2(p, &sa, 0)) {
2095 if (is_addr(&newsrv->init_addr)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002096 ha_alert("parsing [%s:%d]: '%s' : initial address already specified, cannot add '%s'.\n",
Willy Tarreau4310d362016-11-02 15:05:56 +01002097 file, linenum, args[cur_arg], p);
2098 err_code |= ERR_ALERT | ERR_FATAL;
2099 goto out;
2100 }
2101 newsrv->init_addr = sa;
2102 done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_IP);
2103 }
Baptiste Assmann25938272016-09-21 20:26:16 +02002104 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002105 ha_alert("parsing [%s:%d]: '%s' : unknown init-addr method '%s', supported methods are 'libc', 'last', 'none'.\n",
Baptiste Assmann25938272016-09-21 20:26:16 +02002106 file, linenum, args[cur_arg], p);
2107 err_code |= ERR_ALERT | ERR_FATAL;
2108 goto out;
2109 }
2110 if (!done) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002111 ha_alert("parsing [%s:%d]: '%s' : too many init-addr methods when trying to add '%s'\n",
Baptiste Assmann25938272016-09-21 20:26:16 +02002112 file, linenum, args[cur_arg], p);
2113 err_code |= ERR_ALERT | ERR_FATAL;
2114 goto out;
2115 }
2116 }
2117 cur_arg += 2;
2118 }
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002119 else if (!strcmp(args[cur_arg], "resolvers")) {
Frédéric Lécailledaa2fe62017-04-20 12:17:50 +02002120 free(newsrv->resolvers_id);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002121 newsrv->resolvers_id = strdup(args[cur_arg + 1]);
2122 cur_arg += 2;
2123 }
Baptiste Assmann8e2d9432018-06-22 15:04:43 +02002124 else if (!strcmp(args[cur_arg], "resolve-opts")) {
2125 char *p, *end;
2126
2127 for (p = args[cur_arg + 1]; *p; p = end) {
2128 /* cut on next comma */
2129 for (end = p; *end && *end != ','; end++);
2130 if (*end)
2131 *(end++) = 0;
2132
2133 if (!strcmp(p, "allow-dup-ip")) {
2134 newsrv->dns_opts.accept_duplicate_ip = 1;
2135 }
Daniel Corbettf8716912019-11-17 09:48:56 -05002136 else if (!strcmp(p, "ignore-weight")) {
2137 newsrv->dns_opts.ignore_weight = 1;
2138 }
Baptiste Assmann8e2d9432018-06-22 15:04:43 +02002139 else if (!strcmp(p, "prevent-dup-ip")) {
2140 newsrv->dns_opts.accept_duplicate_ip = 0;
2141 }
2142 else {
Daniel Corbettf8716912019-11-17 09:48:56 -05002143 ha_alert("parsing [%s:%d]: '%s' : unknown resolve-opts option '%s', supported methods are 'allow-dup-ip', 'ignore-weight', and 'prevent-dup-ip'.\n",
Baptiste Assmann8e2d9432018-06-22 15:04:43 +02002144 file, linenum, args[cur_arg], p);
2145 err_code |= ERR_ALERT | ERR_FATAL;
2146 goto out;
2147 }
2148 }
2149
2150 cur_arg += 2;
2151 }
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002152 else if (!strcmp(args[cur_arg], "resolve-prefer")) {
2153 if (!strcmp(args[cur_arg + 1], "ipv4"))
Thierry Fournierada34842016-02-17 21:25:09 +01002154 newsrv->dns_opts.family_prio = AF_INET;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002155 else if (!strcmp(args[cur_arg + 1], "ipv6"))
Thierry Fournierada34842016-02-17 21:25:09 +01002156 newsrv->dns_opts.family_prio = AF_INET6;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002157 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002158 ha_alert("parsing [%s:%d]: '%s' expects either ipv4 or ipv6 as argument.\n",
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002159 file, linenum, args[cur_arg]);
2160 err_code |= ERR_ALERT | ERR_FATAL;
2161 goto out;
2162 }
2163 cur_arg += 2;
2164 }
Thierry Fournierac88cfe2016-02-17 22:05:30 +01002165 else if (!strcmp(args[cur_arg], "resolve-net")) {
2166 char *p, *e;
2167 unsigned char mask;
2168 struct dns_options *opt;
2169
2170 if (!args[cur_arg + 1] || args[cur_arg + 1][0] == '\0') {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002171 ha_alert("parsing [%s:%d]: '%s' expects a list of networks.\n",
Thierry Fournierac88cfe2016-02-17 22:05:30 +01002172 file, linenum, args[cur_arg]);
2173 err_code |= ERR_ALERT | ERR_FATAL;
2174 goto out;
2175 }
2176
2177 opt = &newsrv->dns_opts;
2178
2179 /* Split arguments by comma, and convert it from ipv4 or ipv6
2180 * string network in in_addr or in6_addr.
2181 */
2182 p = args[cur_arg + 1];
2183 e = p;
2184 while (*p != '\0') {
Joseph Herlant44466822018-11-15 08:57:51 -08002185 /* If no room available, return error. */
David Carlierd10025c2016-04-08 10:26:44 +01002186 if (opt->pref_net_nb >= SRV_MAX_PREF_NET) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002187 ha_alert("parsing [%s:%d]: '%s' exceed %d networks.\n",
Thierry Fournierac88cfe2016-02-17 22:05:30 +01002188 file, linenum, args[cur_arg], SRV_MAX_PREF_NET);
2189 err_code |= ERR_ALERT | ERR_FATAL;
2190 goto out;
2191 }
2192 /* look for end or comma. */
2193 while (*e != ',' && *e != '\0')
2194 e++;
2195 if (*e == ',') {
2196 *e = '\0';
2197 e++;
2198 }
2199 if (str2net(p, 0, &opt->pref_net[opt->pref_net_nb].addr.in4,
2200 &opt->pref_net[opt->pref_net_nb].mask.in4)) {
2201 /* Try to convert input string from ipv4 or ipv6 network. */
2202 opt->pref_net[opt->pref_net_nb].family = AF_INET;
2203 } else if (str62net(p, &opt->pref_net[opt->pref_net_nb].addr.in6,
2204 &mask)) {
2205 /* Try to convert input string from ipv6 network. */
2206 len2mask6(mask, &opt->pref_net[opt->pref_net_nb].mask.in6);
2207 opt->pref_net[opt->pref_net_nb].family = AF_INET6;
2208 } else {
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05002209 /* All network conversions fail, return error. */
Christopher Faulet767a84b2017-11-24 16:50:31 +01002210 ha_alert("parsing [%s:%d]: '%s': invalid network '%s'.\n",
Thierry Fournierac88cfe2016-02-17 22:05:30 +01002211 file, linenum, args[cur_arg], p);
2212 err_code |= ERR_ALERT | ERR_FATAL;
2213 goto out;
2214 }
2215 opt->pref_net_nb++;
2216 p = e;
2217 }
2218
2219 cur_arg += 2;
2220 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002221 else if (!strcmp(args[cur_arg], "weight")) {
2222 int w;
2223 w = atol(args[cur_arg + 1]);
2224 if (w < 0 || w > SRV_UWGHT_MAX) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002225 ha_alert("parsing [%s:%d] : weight of server %s is not within 0 and %d (%d).\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002226 file, linenum, newsrv->id, SRV_UWGHT_MAX, w);
2227 err_code |= ERR_ALERT | ERR_FATAL;
2228 goto out;
2229 }
2230 newsrv->uweight = newsrv->iweight = w;
2231 cur_arg += 2;
2232 }
Emeric Brun97556472020-05-30 01:42:45 +02002233 else if (!strcmp(args[cur_arg], "log-proto")) {
2234 if (!strcmp(args[cur_arg + 1], "legacy"))
2235 newsrv->log_proto = SRV_LOG_PROTO_LEGACY;
2236 else if (!strcmp(args[cur_arg + 1], "octet-count"))
2237 newsrv->log_proto = SRV_LOG_PROTO_OCTET_COUNTING;
2238 else {
2239 ha_alert("parsing [%s:%d]: '%s' expects one of 'legacy' or "
2240 "'octet-count' but got '%s'\n",
2241 file, linenum, args[cur_arg], args[cur_arg + 1]);
2242 err_code |= ERR_ALERT | ERR_FATAL;
2243 goto out;
2244 }
2245 cur_arg += 2;
2246 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002247 else if (!strcmp(args[cur_arg], "minconn")) {
2248 newsrv->minconn = atol(args[cur_arg + 1]);
2249 cur_arg += 2;
2250 }
2251 else if (!strcmp(args[cur_arg], "maxconn")) {
2252 newsrv->maxconn = atol(args[cur_arg + 1]);
2253 cur_arg += 2;
2254 }
2255 else if (!strcmp(args[cur_arg], "maxqueue")) {
2256 newsrv->maxqueue = atol(args[cur_arg + 1]);
2257 cur_arg += 2;
2258 }
2259 else if (!strcmp(args[cur_arg], "slowstart")) {
2260 /* slowstart is stored in seconds */
2261 const char *err = parse_time_err(args[cur_arg + 1], &val, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02002262
2263 if (err == PARSE_TIME_OVER) {
2264 ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s> of server %s, maximum value is 2147483647 ms (~24.8 days).\n",
2265 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2266 err_code |= ERR_ALERT | ERR_FATAL;
2267 goto out;
2268 }
2269 else if (err == PARSE_TIME_UNDER) {
2270 ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s> of server %s, minimum non-null value is 1 ms.\n",
2271 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2272 err_code |= ERR_ALERT | ERR_FATAL;
2273 goto out;
2274 }
2275 else if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002276 ha_alert("parsing [%s:%d] : unexpected character '%c' in 'slowstart' argument of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002277 file, linenum, *err, newsrv->id);
2278 err_code |= ERR_ALERT | ERR_FATAL;
2279 goto out;
2280 }
2281 newsrv->slowstart = (val + 999) / 1000;
2282 cur_arg += 2;
2283 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002284 else if (!strcmp(args[cur_arg], "on-error")) {
2285 if (!strcmp(args[cur_arg + 1], "fastinter"))
2286 newsrv->onerror = HANA_ONERR_FASTINTER;
2287 else if (!strcmp(args[cur_arg + 1], "fail-check"))
2288 newsrv->onerror = HANA_ONERR_FAILCHK;
2289 else if (!strcmp(args[cur_arg + 1], "sudden-death"))
2290 newsrv->onerror = HANA_ONERR_SUDDTH;
2291 else if (!strcmp(args[cur_arg + 1], "mark-down"))
2292 newsrv->onerror = HANA_ONERR_MARKDWN;
2293 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002294 ha_alert("parsing [%s:%d]: '%s' expects one of 'fastinter', "
Willy Tarreau272adea2014-03-31 10:39:59 +02002295 "'fail-check', 'sudden-death' or 'mark-down' but got '%s'\n",
2296 file, linenum, args[cur_arg], args[cur_arg + 1]);
2297 err_code |= ERR_ALERT | ERR_FATAL;
2298 goto out;
2299 }
2300
2301 cur_arg += 2;
2302 }
2303 else if (!strcmp(args[cur_arg], "on-marked-down")) {
2304 if (!strcmp(args[cur_arg + 1], "shutdown-sessions"))
2305 newsrv->onmarkeddown = HANA_ONMARKEDDOWN_SHUTDOWNSESSIONS;
2306 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002307 ha_alert("parsing [%s:%d]: '%s' expects 'shutdown-sessions' but got '%s'\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002308 file, linenum, args[cur_arg], args[cur_arg + 1]);
2309 err_code |= ERR_ALERT | ERR_FATAL;
2310 goto out;
2311 }
2312
2313 cur_arg += 2;
2314 }
2315 else if (!strcmp(args[cur_arg], "on-marked-up")) {
2316 if (!strcmp(args[cur_arg + 1], "shutdown-backup-sessions"))
2317 newsrv->onmarkedup = HANA_ONMARKEDUP_SHUTDOWNBACKUPSESSIONS;
2318 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002319 ha_alert("parsing [%s:%d]: '%s' expects 'shutdown-backup-sessions' but got '%s'\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002320 file, linenum, args[cur_arg], args[cur_arg + 1]);
2321 err_code |= ERR_ALERT | ERR_FATAL;
2322 goto out;
2323 }
2324
2325 cur_arg += 2;
2326 }
2327 else if (!strcmp(args[cur_arg], "error-limit")) {
2328 if (!*args[cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002329 ha_alert("parsing [%s:%d]: '%s' expects an integer argument.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002330 file, linenum, args[cur_arg]);
2331 err_code |= ERR_ALERT | ERR_FATAL;
2332 goto out;
2333 }
2334
2335 newsrv->consecutive_errors_limit = atoi(args[cur_arg + 1]);
2336
2337 if (newsrv->consecutive_errors_limit <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002338 ha_alert("parsing [%s:%d]: %s has to be > 0.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002339 file, linenum, args[cur_arg]);
2340 err_code |= ERR_ALERT | ERR_FATAL;
2341 goto out;
2342 }
2343 cur_arg += 2;
2344 }
Frédéric Lécaille8d083ed2017-04-14 15:19:56 +02002345 else if (!strcmp(args[cur_arg], "usesrc")) { /* address to use outside: needs "source" first */
Christopher Faulet767a84b2017-11-24 16:50:31 +01002346 ha_alert("parsing [%s:%d] : '%s' only allowed after a '%s' statement.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002347 file, linenum, "usesrc", "source");
2348 err_code |= ERR_ALERT | ERR_FATAL;
2349 goto out;
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002350 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002351 else {
2352 static int srv_dumped;
2353 struct srv_kw *kw;
2354 char *err;
2355
2356 kw = srv_find_kw(args[cur_arg]);
2357 if (kw) {
2358 char *err = NULL;
2359 int code;
2360
2361 if (!kw->parse) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002362 ha_alert("parsing [%s:%d] : '%s %s' : '%s' option is not implemented in this version (check build options).\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002363 file, linenum, args[0], args[1], args[cur_arg]);
Frédéric Lécailledfacd692017-04-16 17:14:14 +02002364 if (kw->skip != -1)
2365 cur_arg += 1 + kw->skip ;
Willy Tarreau272adea2014-03-31 10:39:59 +02002366 err_code |= ERR_ALERT | ERR_FATAL;
2367 goto out;
2368 }
2369
2370 if (defsrv && !kw->default_ok) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002371 ha_alert("parsing [%s:%d] : '%s %s' : '%s' option is not accepted in default-server sections.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002372 file, linenum, args[0], args[1], args[cur_arg]);
Frédéric Lécailledfacd692017-04-16 17:14:14 +02002373 if (kw->skip != -1)
2374 cur_arg += 1 + kw->skip ;
Willy Tarreau272adea2014-03-31 10:39:59 +02002375 err_code |= ERR_ALERT;
2376 continue;
2377 }
2378
2379 code = kw->parse(args, &cur_arg, curproxy, newsrv, &err);
2380 err_code |= code;
2381
2382 if (code) {
Gaetan Rivet10c4b4a2020-02-11 11:42:38 +01002383 display_parser_err(file, linenum, args, cur_arg, code, &err);
Willy Tarreau272adea2014-03-31 10:39:59 +02002384 if (code & ERR_FATAL) {
2385 free(err);
Frédéric Lécailledfacd692017-04-16 17:14:14 +02002386 if (kw->skip != -1)
2387 cur_arg += 1 + kw->skip;
Willy Tarreau272adea2014-03-31 10:39:59 +02002388 goto out;
2389 }
2390 }
2391 free(err);
Frédéric Lécailledfacd692017-04-16 17:14:14 +02002392 if (kw->skip != -1)
2393 cur_arg += 1 + kw->skip;
Willy Tarreau272adea2014-03-31 10:39:59 +02002394 continue;
2395 }
2396
2397 err = NULL;
2398 if (!srv_dumped) {
2399 srv_dump_kws(&err);
2400 indent_msg(&err, 4);
2401 srv_dumped = 1;
2402 }
2403
Christopher Faulet767a84b2017-11-24 16:50:31 +01002404 ha_alert("parsing [%s:%d] : '%s %s' unknown keyword '%s'.%s%s\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002405 file, linenum, args[0], args[1], args[cur_arg],
2406 err ? " Registered keywords :" : "", err ? err : "");
2407 free(err);
2408
2409 err_code |= ERR_ALERT | ERR_FATAL;
2410 goto out;
2411 }
2412 }
2413
Frédéric Lécaille759ea982017-03-30 17:32:36 +02002414 if (!defsrv)
2415 err_code |= server_finalize_init(file, linenum, args, cur_arg, newsrv, curproxy);
2416 if (err_code & ERR_FATAL)
2417 goto out;
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002418 if (srv_tmpl)
2419 server_template_init(newsrv, curproxy);
Willy Tarreau272adea2014-03-31 10:39:59 +02002420 }
Willy Tarreau07101d52015-09-08 16:16:35 +02002421 free(fqdn);
Willy Tarreau272adea2014-03-31 10:39:59 +02002422 return 0;
2423
2424 out:
Willy Tarreau07101d52015-09-08 16:16:35 +02002425 free(fqdn);
Willy Tarreau272adea2014-03-31 10:39:59 +02002426 free(errmsg);
2427 return err_code;
2428}
2429
Baptiste Assmann19a106d2015-07-08 22:03:56 +02002430/* Returns a pointer to the first server matching either id <id>.
2431 * NULL is returned if no match is found.
2432 * the lookup is performed in the backend <bk>
2433 */
2434struct server *server_find_by_id(struct proxy *bk, int id)
2435{
2436 struct eb32_node *eb32;
2437 struct server *curserver;
2438
2439 if (!bk || (id ==0))
2440 return NULL;
2441
2442 /* <bk> has no backend capabilities, so it can't have a server */
2443 if (!(bk->cap & PR_CAP_BE))
2444 return NULL;
2445
2446 curserver = NULL;
2447
2448 eb32 = eb32_lookup(&bk->conf.used_server_id, id);
2449 if (eb32)
2450 curserver = container_of(eb32, struct server, conf.id);
2451
2452 return curserver;
2453}
2454
2455/* Returns a pointer to the first server matching either name <name>, or id
2456 * if <name> starts with a '#'. NULL is returned if no match is found.
2457 * the lookup is performed in the backend <bk>
2458 */
2459struct server *server_find_by_name(struct proxy *bk, const char *name)
2460{
2461 struct server *curserver;
2462
2463 if (!bk || !name)
2464 return NULL;
2465
2466 /* <bk> has no backend capabilities, so it can't have a server */
2467 if (!(bk->cap & PR_CAP_BE))
2468 return NULL;
2469
2470 curserver = NULL;
2471 if (*name == '#') {
2472 curserver = server_find_by_id(bk, atoi(name + 1));
2473 if (curserver)
2474 return curserver;
2475 }
2476 else {
2477 curserver = bk->srv;
2478
2479 while (curserver && (strcmp(curserver->id, name) != 0))
2480 curserver = curserver->next;
2481
2482 if (curserver)
2483 return curserver;
2484 }
2485
2486 return NULL;
2487}
2488
2489struct server *server_find_best_match(struct proxy *bk, char *name, int id, int *diff)
2490{
2491 struct server *byname;
2492 struct server *byid;
2493
2494 if (!name && !id)
2495 return NULL;
2496
2497 if (diff)
2498 *diff = 0;
2499
2500 byname = byid = NULL;
2501
2502 if (name) {
2503 byname = server_find_by_name(bk, name);
2504 if (byname && (!id || byname->puid == id))
2505 return byname;
2506 }
2507
2508 /* remaining possibilities :
2509 * - name not set
2510 * - name set but not found
2511 * - name found but ID doesn't match
2512 */
2513 if (id) {
2514 byid = server_find_by_id(bk, id);
2515 if (byid) {
2516 if (byname) {
2517 /* use id only if forced by configuration */
2518 if (byid->flags & SRV_F_FORCED_ID) {
2519 if (diff)
2520 *diff |= 2;
2521 return byid;
2522 }
2523 else {
2524 if (diff)
2525 *diff |= 1;
2526 return byname;
2527 }
2528 }
2529
2530 /* remaining possibilities:
2531 * - name not set
2532 * - name set but not found
2533 */
2534 if (name && diff)
2535 *diff |= 2;
2536 return byid;
2537 }
2538
2539 /* id bot found */
2540 if (byname) {
2541 if (diff)
2542 *diff |= 1;
2543 return byname;
2544 }
2545 }
2546
2547 return NULL;
2548}
2549
Willy Tarreau46b7f532018-08-21 11:54:26 +02002550/* Update a server state using the parameters available in the params list.
2551 *
2552 * Grabs the server lock during operation.
2553 */
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002554static void srv_update_state(struct server *srv, int version, char **params)
2555{
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002556 char *p;
Willy Tarreau83061a82018-07-13 11:56:34 +02002557 struct buffer *msg;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002558
2559 /* fields since version 1
2560 * and common to all other upcoming versions
2561 */
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002562 enum srv_state srv_op_state;
2563 enum srv_admin srv_admin_state;
2564 unsigned srv_uweight, srv_iweight;
2565 unsigned long srv_last_time_change;
2566 short srv_check_status;
2567 enum chk_result srv_check_result;
2568 int srv_check_health;
2569 int srv_check_state, srv_agent_state;
2570 int bk_f_forced_id;
2571 int srv_f_forced_id;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02002572 int fqdn_set_by_cli;
2573 const char *fqdn;
Frédéric Lécaille31694712017-08-01 08:47:19 +02002574 const char *port_str;
2575 unsigned int port;
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02002576 char *srvrecord;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002577
Frédéric Lécailleb418c122017-04-26 11:24:02 +02002578 fqdn = NULL;
Frédéric Lécaille31694712017-08-01 08:47:19 +02002579 port = 0;
Willy Tarreau31138fa2015-09-29 18:38:47 +02002580 msg = get_trash_chunk();
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002581 switch (version) {
2582 case 1:
2583 /*
2584 * now we can proceed with server's state update:
2585 * srv_addr: params[0]
2586 * srv_op_state: params[1]
2587 * srv_admin_state: params[2]
2588 * srv_uweight: params[3]
2589 * srv_iweight: params[4]
2590 * srv_last_time_change: params[5]
2591 * srv_check_status: params[6]
2592 * srv_check_result: params[7]
2593 * srv_check_health: params[8]
2594 * srv_check_state: params[9]
2595 * srv_agent_state: params[10]
2596 * bk_f_forced_id: params[11]
2597 * srv_f_forced_id: params[12]
Frédéric Lécailleb418c122017-04-26 11:24:02 +02002598 * srv_fqdn: params[13]
Frédéric Lécaille31694712017-08-01 08:47:19 +02002599 * srv_port: params[14]
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02002600 * srvrecord: params[15]
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002601 */
2602
2603 /* validating srv_op_state */
2604 p = NULL;
2605 errno = 0;
2606 srv_op_state = strtol(params[1], &p, 10);
2607 if ((p == params[1]) || errno == EINVAL || errno == ERANGE ||
2608 (srv_op_state != SRV_ST_STOPPED &&
2609 srv_op_state != SRV_ST_STARTING &&
2610 srv_op_state != SRV_ST_RUNNING &&
2611 srv_op_state != SRV_ST_STOPPING)) {
2612 chunk_appendf(msg, ", invalid srv_op_state value '%s'", params[1]);
2613 }
2614
2615 /* validating srv_admin_state */
2616 p = NULL;
2617 errno = 0;
2618 srv_admin_state = strtol(params[2], &p, 10);
Frédéric Lécailleb418c122017-04-26 11:24:02 +02002619 fqdn_set_by_cli = !!(srv_admin_state & SRV_ADMF_HMAINT);
Willy Tarreau757478e2016-11-03 19:22:19 +01002620
Frédéric Lécailleb418c122017-04-26 11:24:02 +02002621 /* inherited statuses will be recomputed later.
2622 * Also disable SRV_ADMF_HMAINT flag (set from stats socket fqdn).
2623 */
2624 srv_admin_state &= ~SRV_ADMF_IDRAIN & ~SRV_ADMF_IMAINT & ~SRV_ADMF_HMAINT;
Willy Tarreau757478e2016-11-03 19:22:19 +01002625
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002626 if ((p == params[2]) || errno == EINVAL || errno == ERANGE ||
2627 (srv_admin_state != 0 &&
2628 srv_admin_state != SRV_ADMF_FMAINT &&
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002629 srv_admin_state != SRV_ADMF_CMAINT &&
2630 srv_admin_state != (SRV_ADMF_CMAINT | SRV_ADMF_FMAINT) &&
Willy Tarreaue1bde142016-11-03 18:33:25 +01002631 srv_admin_state != (SRV_ADMF_CMAINT | SRV_ADMF_FDRAIN) &&
Willy Tarreau757478e2016-11-03 19:22:19 +01002632 srv_admin_state != SRV_ADMF_FDRAIN)) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002633 chunk_appendf(msg, ", invalid srv_admin_state value '%s'", params[2]);
2634 }
2635
2636 /* validating srv_uweight */
2637 p = NULL;
2638 errno = 0;
2639 srv_uweight = strtol(params[3], &p, 10);
Willy Tarreaue1aebb22015-09-29 18:32:57 +02002640 if ((p == params[3]) || errno == EINVAL || errno == ERANGE || (srv_uweight > SRV_UWGHT_MAX))
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002641 chunk_appendf(msg, ", invalid srv_uweight value '%s'", params[3]);
2642
2643 /* validating srv_iweight */
2644 p = NULL;
2645 errno = 0;
2646 srv_iweight = strtol(params[4], &p, 10);
Willy Tarreaue1aebb22015-09-29 18:32:57 +02002647 if ((p == params[4]) || errno == EINVAL || errno == ERANGE || (srv_iweight > SRV_UWGHT_MAX))
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002648 chunk_appendf(msg, ", invalid srv_iweight value '%s'", params[4]);
2649
2650 /* validating srv_last_time_change */
2651 p = NULL;
2652 errno = 0;
2653 srv_last_time_change = strtol(params[5], &p, 10);
2654 if ((p == params[5]) || errno == EINVAL || errno == ERANGE)
2655 chunk_appendf(msg, ", invalid srv_last_time_change value '%s'", params[5]);
2656
2657 /* validating srv_check_status */
2658 p = NULL;
2659 errno = 0;
2660 srv_check_status = strtol(params[6], &p, 10);
2661 if (p == params[6] || errno == EINVAL || errno == ERANGE ||
2662 (srv_check_status >= HCHK_STATUS_SIZE))
2663 chunk_appendf(msg, ", invalid srv_check_status value '%s'", params[6]);
2664
2665 /* validating srv_check_result */
2666 p = NULL;
2667 errno = 0;
2668 srv_check_result = strtol(params[7], &p, 10);
2669 if ((p == params[7]) || errno == EINVAL || errno == ERANGE ||
2670 (srv_check_result != CHK_RES_UNKNOWN &&
2671 srv_check_result != CHK_RES_NEUTRAL &&
2672 srv_check_result != CHK_RES_FAILED &&
2673 srv_check_result != CHK_RES_PASSED &&
2674 srv_check_result != CHK_RES_CONDPASS)) {
2675 chunk_appendf(msg, ", invalid srv_check_result value '%s'", params[7]);
2676 }
2677
2678 /* validating srv_check_health */
2679 p = NULL;
2680 errno = 0;
2681 srv_check_health = strtol(params[8], &p, 10);
2682 if (p == params[8] || errno == EINVAL || errno == ERANGE)
2683 chunk_appendf(msg, ", invalid srv_check_health value '%s'", params[8]);
2684
2685 /* validating srv_check_state */
2686 p = NULL;
2687 errno = 0;
2688 srv_check_state = strtol(params[9], &p, 10);
2689 if (p == params[9] || errno == EINVAL || errno == ERANGE ||
2690 (srv_check_state & ~(CHK_ST_INPROGRESS | CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_PAUSED | CHK_ST_AGENT)))
2691 chunk_appendf(msg, ", invalid srv_check_state value '%s'", params[9]);
2692
2693 /* validating srv_agent_state */
2694 p = NULL;
2695 errno = 0;
2696 srv_agent_state = strtol(params[10], &p, 10);
2697 if (p == params[10] || errno == EINVAL || errno == ERANGE ||
2698 (srv_agent_state & ~(CHK_ST_INPROGRESS | CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_PAUSED | CHK_ST_AGENT)))
2699 chunk_appendf(msg, ", invalid srv_agent_state value '%s'", params[10]);
2700
2701 /* validating bk_f_forced_id */
2702 p = NULL;
2703 errno = 0;
2704 bk_f_forced_id = strtol(params[11], &p, 10);
2705 if (p == params[11] || errno == EINVAL || errno == ERANGE || !((bk_f_forced_id == 0) || (bk_f_forced_id == 1)))
2706 chunk_appendf(msg, ", invalid bk_f_forced_id value '%s'", params[11]);
2707
2708 /* validating srv_f_forced_id */
2709 p = NULL;
2710 errno = 0;
2711 srv_f_forced_id = strtol(params[12], &p, 10);
2712 if (p == params[12] || errno == EINVAL || errno == ERANGE || !((srv_f_forced_id == 0) || (srv_f_forced_id == 1)))
2713 chunk_appendf(msg, ", invalid srv_f_forced_id value '%s'", params[12]);
2714
Frédéric Lécailleb418c122017-04-26 11:24:02 +02002715 /* validating srv_fqdn */
2716 fqdn = params[13];
2717 if (fqdn && *fqdn == '-')
2718 fqdn = NULL;
2719 if (fqdn && (strlen(fqdn) > DNS_MAX_NAME_SIZE || invalid_domainchar(fqdn))) {
2720 chunk_appendf(msg, ", invalid srv_fqdn value '%s'", params[13]);
2721 fqdn = NULL;
2722 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002723
Frédéric Lécaille31694712017-08-01 08:47:19 +02002724 port_str = params[14];
2725 if (port_str) {
2726 port = strl2uic(port_str, strlen(port_str));
2727 if (port > USHRT_MAX) {
2728 chunk_appendf(msg, ", invalid srv_port value '%s'", port_str);
2729 port_str = NULL;
2730 }
2731 }
2732
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02002733 /* SRV record
2734 * NOTE: in HAProxy, SRV records must start with an underscore '_'
2735 */
2736 srvrecord = params[15];
2737 if (srvrecord && *srvrecord != '_')
2738 srvrecord = NULL;
2739
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002740 /* don't apply anything if one error has been detected */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002741 if (msg->data)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002742 goto out;
2743
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002744 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002745 /* recover operational state and apply it to this server
2746 * and all servers tracking this one */
Jérôme Magninf57afa42019-01-20 11:27:40 +01002747 srv->check.health = srv_check_health;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002748 switch (srv_op_state) {
2749 case SRV_ST_STOPPED:
2750 srv->check.health = 0;
Emeric Brun5a133512017-10-19 14:42:30 +02002751 srv_set_stopped(srv, "changed from server-state after a reload", NULL);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002752 break;
2753 case SRV_ST_STARTING:
Jérôme Magninf57afa42019-01-20 11:27:40 +01002754 /* If rise == 1 there is no STARTING state, let's switch to
2755 * RUNNING
2756 */
2757 if (srv->check.rise == 1) {
2758 srv->check.health = srv->check.rise + srv->check.fall - 1;
2759 srv_set_running(srv, "", NULL);
2760 break;
2761 }
2762 if (srv->check.health < 1 || srv->check.health >= srv->check.rise)
2763 srv->check.health = srv->check.rise - 1;
Emeric Brun52a91d32017-08-31 14:41:55 +02002764 srv->next_state = srv_op_state;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002765 break;
2766 case SRV_ST_STOPPING:
Jérôme Magninf57afa42019-01-20 11:27:40 +01002767 /* If fall == 1 there is no STOPPING state, let's switch to
2768 * STOPPED
2769 */
2770 if (srv->check.fall == 1) {
2771 srv->check.health = 0;
2772 srv_set_stopped(srv, "changed from server-state after a reload", NULL);
2773 break;
2774 }
2775 if (srv->check.health < srv->check.rise ||
2776 srv->check.health > srv->check.rise + srv->check.fall - 2)
2777 srv->check.health = srv->check.rise;
Emeric Brun5a133512017-10-19 14:42:30 +02002778 srv_set_stopping(srv, "changed from server-state after a reload", NULL);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002779 break;
2780 case SRV_ST_RUNNING:
2781 srv->check.health = srv->check.rise + srv->check.fall - 1;
Emeric Brun5a133512017-10-19 14:42:30 +02002782 srv_set_running(srv, "", NULL);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002783 break;
2784 }
2785
2786 /* When applying server state, the following rules apply:
2787 * - in case of a configuration change, we apply the setting from the new
2788 * configuration, regardless of old running state
2789 * - if no configuration change, we apply old running state only if old running
2790 * state is different from new configuration state
2791 */
2792 /* configuration has changed */
Emeric Brun52a91d32017-08-31 14:41:55 +02002793 if ((srv_admin_state & SRV_ADMF_CMAINT) != (srv->next_admin & SRV_ADMF_CMAINT)) {
2794 if (srv->next_admin & SRV_ADMF_CMAINT)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002795 srv_adm_set_maint(srv);
2796 else
2797 srv_adm_set_ready(srv);
2798 }
2799 /* configuration is the same, let's compate old running state and new conf state */
2800 else {
Emeric Brun52a91d32017-08-31 14:41:55 +02002801 if (srv_admin_state & SRV_ADMF_FMAINT && !(srv->next_admin & SRV_ADMF_CMAINT))
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002802 srv_adm_set_maint(srv);
Emeric Brun52a91d32017-08-31 14:41:55 +02002803 else if (!(srv_admin_state & SRV_ADMF_FMAINT) && (srv->next_admin & SRV_ADMF_CMAINT))
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002804 srv_adm_set_ready(srv);
2805 }
2806 /* apply drain mode if server is currently enabled */
Emeric Brun52a91d32017-08-31 14:41:55 +02002807 if (!(srv->next_admin & SRV_ADMF_FMAINT) && (srv_admin_state & SRV_ADMF_FDRAIN)) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002808 /* The SRV_ADMF_FDRAIN flag is inherited when srv->iweight is 0
Willy Tarreau22cace22016-11-03 18:19:49 +01002809 * (srv->iweight is the weight set up in configuration).
2810 * There are two possible reasons for FDRAIN to have been present :
2811 * - previous config weight was zero
2812 * - "set server b/s drain" was sent to the CLI
2813 *
2814 * In the first case, we simply want to drop this drain state
2815 * if the new weight is not zero anymore, meaning the administrator
2816 * has intentionally turned the weight back to a positive value to
2817 * enable the server again after an operation. In the second case,
2818 * the drain state was forced on the CLI regardless of the config's
2819 * weight so we don't want a change to the config weight to lose this
2820 * status. What this means is :
2821 * - if previous weight was 0 and new one is >0, drop the DRAIN state.
2822 * - if the previous weight was >0, keep it.
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002823 */
Willy Tarreau22cace22016-11-03 18:19:49 +01002824 if (srv_iweight > 0 || srv->iweight == 0)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002825 srv_adm_set_drain(srv);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002826 }
2827
2828 srv->last_change = date.tv_sec - srv_last_time_change;
2829 srv->check.status = srv_check_status;
2830 srv->check.result = srv_check_result;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002831
2832 /* Only case we want to apply is removing ENABLED flag which could have been
2833 * done by the "disable health" command over the stats socket
2834 */
2835 if ((srv->check.state & CHK_ST_CONFIGURED) &&
2836 (srv_check_state & CHK_ST_CONFIGURED) &&
2837 !(srv_check_state & CHK_ST_ENABLED))
2838 srv->check.state &= ~CHK_ST_ENABLED;
2839
2840 /* Only case we want to apply is removing ENABLED flag which could have been
2841 * done by the "disable agent" command over the stats socket
2842 */
2843 if ((srv->agent.state & CHK_ST_CONFIGURED) &&
2844 (srv_agent_state & CHK_ST_CONFIGURED) &&
2845 !(srv_agent_state & CHK_ST_ENABLED))
2846 srv->agent.state &= ~CHK_ST_ENABLED;
2847
Baptiste Assmann6076d1c2015-09-17 22:53:59 +02002848 /* We want to apply the previous 'running' weight (srv_uweight) only if there
2849 * was no change in the configuration: both previous and new iweight are equals
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002850 *
Baptiste Assmann6076d1c2015-09-17 22:53:59 +02002851 * It means that a configuration file change has precedence over a unix socket change
2852 * for server's weight
2853 *
2854 * by default, HAProxy applies the following weight when parsing the configuration
2855 * srv->uweight = srv->iweight
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002856 */
Baptiste Assmann6076d1c2015-09-17 22:53:59 +02002857 if (srv_iweight == srv->iweight) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002858 srv->uweight = srv_uweight;
2859 }
Willy Tarreau3ff577e2018-08-02 11:48:52 +02002860 server_recalc_eweight(srv, 1);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002861
Willy Tarreaue5a60682016-11-09 14:54:53 +01002862 /* load server IP address */
Daniel Corbett9215ffa2018-05-19 19:43:24 -04002863 if (strcmp(params[0], "-"))
2864 srv->lastaddr = strdup(params[0]);
Frédéric Lécailleb418c122017-04-26 11:24:02 +02002865
2866 if (fqdn && srv->hostname) {
2867 if (!strcmp(srv->hostname, fqdn)) {
2868 /* Here we reset the 'set from stats socket FQDN' flag
2869 * to support such transitions:
2870 * Let's say initial FQDN value is foo1 (in configuration file).
2871 * - FQDN changed from stats socket, from foo1 to foo2 value,
2872 * - FQDN changed again from file configuration (with the same previous value
2873 set from stats socket, from foo1 to foo2 value),
2874 * - reload for any other reason than a FQDN modification,
2875 * the configuration file FQDN matches the fqdn server state file value.
2876 * So we must reset the 'set from stats socket FQDN' flag to be consistent with
Joseph Herlant44466822018-11-15 08:57:51 -08002877 * any further FQDN modification.
Frédéric Lécailleb418c122017-04-26 11:24:02 +02002878 */
Emeric Brun52a91d32017-08-31 14:41:55 +02002879 srv->next_admin &= ~SRV_ADMF_HMAINT;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02002880 }
2881 else {
2882 /* If the FDQN has been changed from stats socket,
2883 * apply fqdn state file value (which is the value set
2884 * from stats socket).
Baptiste Assmann13a92322019-06-07 09:40:55 +02002885 * Also ensure the runtime resolver will process this resolution.
Frédéric Lécailleb418c122017-04-26 11:24:02 +02002886 */
2887 if (fqdn_set_by_cli) {
Olivier Houchardd16bfe62017-10-31 15:21:19 +01002888 srv_set_fqdn(srv, fqdn, 0);
Baptiste Assmann13a92322019-06-07 09:40:55 +02002889 srv->flags &= ~SRV_F_NO_RESOLUTION;
Emeric Brun52a91d32017-08-31 14:41:55 +02002890 srv->next_admin |= SRV_ADMF_HMAINT;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02002891 }
2892 }
2893 }
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02002894 /* If all the conditions below are validated, this means
2895 * we're evaluating a server managed by SRV resolution
2896 */
2897 else if (fqdn && !srv->hostname && srvrecord) {
2898 int res;
2899
2900 /* we can't apply previous state if SRV record has changed */
2901 if (srv->srvrq && strcmp(srv->srvrq->name, srvrecord) != 0) {
2902 chunk_appendf(msg, ", SRV record mismatch between configuration ('%s') and state file ('%s) for server '%s'. Previous state not applied", srv->srvrq->name, srvrecord, srv->id);
2903 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
2904 goto out;
2905 }
2906
2907 /* create or find a SRV resolution for this srv record */
2908 if (srv->srvrq == NULL && (srv->srvrq = find_srvrq_by_name(srvrecord, srv->proxy)) == NULL)
2909 srv->srvrq = new_dns_srvrq(srv, srvrecord);
2910 if (srv->srvrq == NULL) {
2911 chunk_appendf(msg, ", can't create or find SRV resolution '%s' for server '%s'", srvrecord, srv->id);
2912 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
2913 goto out;
2914 }
2915
2916 /* prepare DNS resolution for this server */
2917 res = srv_prepare_for_resolution(srv, fqdn);
2918 if (res == -1) {
2919 chunk_appendf(msg, ", can't allocate memory for DNS resolution for server '%s'", srv->id);
2920 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
2921 goto out;
2922 }
2923
2924 /* configure check.port accordingly */
2925 if ((srv->check.state & CHK_ST_CONFIGURED) &&
2926 !(srv->flags & SRV_F_CHECKPORT))
2927 srv->check.port = port;
2928
2929 /* Unset SRV_F_MAPPORTS for SRV records.
2930 * SRV_F_MAPPORTS is unfortunately set by parse_server()
2931 * because no ports are provided in the configuration file.
2932 * This is because HAProxy will use the port found into the SRV record.
2933 */
2934 srv->flags &= ~SRV_F_MAPPORTS;
2935 }
Frédéric Lécailleb418c122017-04-26 11:24:02 +02002936
Frédéric Lécaille31694712017-08-01 08:47:19 +02002937 if (port_str)
2938 srv->svc_port = port;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002939 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Frédéric Lécaille31694712017-08-01 08:47:19 +02002940
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002941 break;
2942 default:
2943 chunk_appendf(msg, ", version '%d' not supported", version);
2944 }
2945
2946 out:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002947 if (msg->data) {
Baptiste Assmann0821bb92016-01-21 00:20:50 +01002948 chunk_appendf(msg, "\n");
Christopher Faulet767a84b2017-11-24 16:50:31 +01002949 ha_warning("server-state application failed for server '%s/%s'%s",
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002950 srv->proxy->id, srv->id, msg->area);
Baptiste Assmann0821bb92016-01-21 00:20:50 +01002951 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002952}
2953
Baptiste Assmannda29fe22019-06-13 13:24:29 +02002954
2955/*
2956 * read next line from file <f> and return the server state version if one found.
2957 * If no version is found, then 0 is returned
2958 * Note that this should be the first read on <f>
2959 */
2960static int srv_state_get_version(FILE *f) {
2961 char buf[2];
2962 int ret;
2963
2964 /* first character of first line of the file must contain the version of the export */
2965 if (fgets(buf, 2, f) == NULL) {
2966 return 0;
2967 }
2968
2969 ret = atoi(buf);
2970 if ((ret < SRV_STATE_FILE_VERSION_MIN) ||
2971 (ret > SRV_STATE_FILE_VERSION_MAX))
2972 return 0;
2973
2974 return ret;
2975}
2976
2977
2978/*
2979 * parses server state line stored in <buf> and supposedly in version <version>.
2980 * Set <params> and <srv_params> accordingly.
2981 * In case of error, params[0] is set to NULL.
2982 */
2983static void srv_state_parse_line(char *buf, const int version, char **params, char **srv_params)
2984{
2985 int buflen, arg, srv_arg;
2986 char *cur, *end;
2987
2988 buflen = strlen(buf);
2989 cur = buf;
2990 end = cur + buflen;
2991
2992 /* we need at least one character */
2993 if (buflen == 0) {
2994 params[0] = NULL;
2995 return;
2996 }
2997
2998 /* ignore blank characters at the beginning of the line */
Willy Tarreau90807112020-02-25 08:16:33 +01002999 while (isspace((unsigned char)*cur))
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003000 ++cur;
3001
3002 /* Ignore empty or commented lines */
3003 if (cur == end || *cur == '#') {
3004 params[0] = NULL;
3005 return;
3006 }
3007
3008 /* truncated lines */
3009 if (buf[buflen - 1] != '\n') {
3010 //ha_warning("server-state file '%s': truncated line\n", filepath);
3011 params[0] = NULL;
3012 return;
3013 }
3014
3015 /* Removes trailing '\n' */
3016 buf[buflen - 1] = '\0';
3017
3018 /* we're now ready to move the line into *srv_params[] */
3019 params[0] = cur;
3020 arg = 1;
3021 srv_arg = 0;
3022 while (*cur && arg < SRV_STATE_FILE_MAX_FIELDS) {
Willy Tarreau90807112020-02-25 08:16:33 +01003023 if (isspace((unsigned char)*cur)) {
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003024 *cur = '\0';
3025 ++cur;
Willy Tarreau90807112020-02-25 08:16:33 +01003026 while (isspace((unsigned char)*cur))
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003027 ++cur;
3028 switch (version) {
3029 case 1:
3030 /*
3031 * srv_addr: params[4] => srv_params[0]
3032 * srv_op_state: params[5] => srv_params[1]
3033 * srv_admin_state: params[6] => srv_params[2]
3034 * srv_uweight: params[7] => srv_params[3]
3035 * srv_iweight: params[8] => srv_params[4]
3036 * srv_last_time_change: params[9] => srv_params[5]
3037 * srv_check_status: params[10] => srv_params[6]
3038 * srv_check_result: params[11] => srv_params[7]
3039 * srv_check_health: params[12] => srv_params[8]
3040 * srv_check_state: params[13] => srv_params[9]
3041 * srv_agent_state: params[14] => srv_params[10]
3042 * bk_f_forced_id: params[15] => srv_params[11]
3043 * srv_f_forced_id: params[16] => srv_params[12]
3044 * srv_fqdn: params[17] => srv_params[13]
3045 * srv_port: params[18] => srv_params[14]
3046 * srvrecord: params[19] => srv_params[15]
3047 */
3048 if (arg >= 4) {
3049 srv_params[srv_arg] = cur;
3050 ++srv_arg;
3051 }
3052 break;
3053 }
3054
3055 params[arg] = cur;
3056 ++arg;
3057 }
3058 else {
3059 ++cur;
3060 }
3061 }
3062
3063 /* if line is incomplete line, then ignore it.
3064 * otherwise, update useful flags */
3065 switch (version) {
3066 case 1:
3067 if (arg < SRV_STATE_FILE_NB_FIELDS_VERSION_1) {
3068 params[0] = NULL;
3069 return;
3070 }
3071 break;
3072 }
3073
3074 return;
3075}
3076
3077
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003078/* This function parses all the proxies and only take care of the backends (since we're looking for server)
3079 * For each proxy, it does the following:
3080 * - opens its server state file (either one or local one)
3081 * - read whole file, line by line
3082 * - analyse each line to check if it matches our current backend:
3083 * - backend name matches
3084 * - backend id matches if id is forced and name doesn't match
3085 * - if the server pointed by the line is found, then state is applied
3086 *
3087 * If the running backend uuid or id differs from the state file, then HAProxy reports
3088 * a warning.
Willy Tarreau46b7f532018-08-21 11:54:26 +02003089 *
3090 * Grabs the server's lock via srv_update_state().
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003091 */
3092void apply_server_state(void)
3093{
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003094 char mybuf[SRV_STATE_LINE_MAXLEN];
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003095 char *params[SRV_STATE_FILE_MAX_FIELDS] = {0};
3096 char *srv_params[SRV_STATE_FILE_MAX_FIELDS] = {0};
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003097 int version, global_file_version;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003098 FILE *f;
3099 char *filepath;
3100 char globalfilepath[MAXPATHLEN + 1];
3101 char localfilepath[MAXPATHLEN + 1];
3102 int len, fileopenerr, globalfilepathlen, localfilepathlen;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003103 struct proxy *curproxy, *bk;
3104 struct server *srv;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003105 char *line;
3106 char *bkname, *srvname;
3107 struct state_line *st;
3108 struct ebmb_node *node, *next_node;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003109
Willy Tarreau2d067f92020-07-16 06:40:27 +02003110 f = NULL;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003111 global_file_version = 0;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003112 globalfilepathlen = 0;
3113 /* create the globalfilepath variable */
3114 if (global.server_state_file) {
3115 /* absolute path or no base directory provided */
3116 if ((global.server_state_file[0] == '/') || (!global.server_state_base)) {
3117 len = strlen(global.server_state_file);
3118 if (len > MAXPATHLEN) {
3119 globalfilepathlen = 0;
3120 goto globalfileerror;
3121 }
3122 memcpy(globalfilepath, global.server_state_file, len);
3123 globalfilepath[len] = '\0';
3124 globalfilepathlen = len;
3125 }
3126 else if (global.server_state_base) {
3127 len = strlen(global.server_state_base);
Willy Tarreau5dfb6c42018-10-16 19:26:12 +02003128 if (len > MAXPATHLEN) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003129 globalfilepathlen = 0;
3130 goto globalfileerror;
3131 }
Olivier Houchard17f8b902018-10-16 18:35:01 +02003132 memcpy(globalfilepath, global.server_state_base, len);
Willy Tarreau5dfb6c42018-10-16 19:26:12 +02003133 globalfilepath[len] = 0;
3134 globalfilepathlen = len;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003135
3136 /* append a slash if needed */
3137 if (!globalfilepathlen || globalfilepath[globalfilepathlen - 1] != '/') {
3138 if (globalfilepathlen + 1 > MAXPATHLEN) {
3139 globalfilepathlen = 0;
3140 goto globalfileerror;
3141 }
3142 globalfilepath[globalfilepathlen++] = '/';
3143 }
3144
3145 len = strlen(global.server_state_file);
3146 if (globalfilepathlen + len > MAXPATHLEN) {
3147 globalfilepathlen = 0;
3148 goto globalfileerror;
3149 }
3150 memcpy(globalfilepath + globalfilepathlen, global.server_state_file, len);
3151 globalfilepathlen += len;
3152 globalfilepath[globalfilepathlen++] = 0;
3153 }
3154 }
3155 globalfileerror:
3156 if (globalfilepathlen == 0)
3157 globalfilepath[0] = '\0';
3158
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003159 /* Load global server state in a tree */
3160 if (globalfilepathlen > 0) {
3161 errno = 0;
3162 f = fopen(globalfilepath, "r");
3163 if (errno)
3164 ha_warning("Can't open global server state file '%s': %s\n", globalfilepath, strerror(errno));
Vedran Furac5d486272019-10-16 14:49:38 +02003165 if (!f)
3166 goto out_load_server_state_in_tree;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003167
3168 global_file_version = srv_state_get_version(f);
3169 if (global_file_version == 0)
3170 goto out_load_server_state_in_tree;
3171
3172 while (fgets(mybuf, SRV_STATE_LINE_MAXLEN, f)) {
3173 line = NULL;
3174
3175 line = strdup(mybuf);
3176 if (line == NULL)
3177 continue;
3178
3179 srv_state_parse_line(mybuf, global_file_version, params, srv_params);
3180 if (params[0] == NULL)
Willy Tarreauca7a5af2019-12-20 17:26:27 +01003181 goto nextline;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003182
3183 /* bkname */
3184 bkname = params[1];
3185 /* srvname */
3186 srvname = params[3];
3187
3188 /* key */
3189 chunk_printf(&trash, "%s %s", bkname, srvname);
3190
3191 /* store line in tree */
Willy Tarreau7d6a1fa2019-12-20 17:18:13 +01003192 st = calloc(1, sizeof(*st) + trash.data + 1);
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003193 if (st == NULL) {
3194 goto nextline;
3195 }
Willy Tarreau7d6a1fa2019-12-20 17:18:13 +01003196 memcpy(st->name_name.key, trash.area, trash.data + 1);
Willy Tarreaufd1aa012019-12-20 17:23:40 +01003197 if (ebst_insert(&state_file, &st->name_name) != &st->name_name) {
3198 /* this is a duplicate key, probably a hand-crafted file,
3199 * drop it!
3200 */
3201 goto nextline;
3202 }
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003203
3204 /* save line */
3205 st->line = line;
3206
3207 continue;
3208
3209 nextline:
3210 /* free up memory in case of error during the processing of the line */
3211 free(line);
3212 }
3213 }
3214 out_load_server_state_in_tree:
3215
Ilya Shipitsindc6e8a92020-07-16 02:02:40 +05003216 if (f) {
3217 fclose(f);
3218 f = NULL;
3219 }
3220
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003221 /* parse all proxies and load states form tree (global file) or from local file */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003222 for (curproxy = proxies_list; curproxy != NULL; curproxy = curproxy->next) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003223 /* servers are only in backends */
3224 if (!(curproxy->cap & PR_CAP_BE))
3225 continue;
3226 fileopenerr = 0;
3227 filepath = NULL;
3228
3229 /* search server state file path and name */
3230 switch (curproxy->load_server_state_from_file) {
3231 /* read servers state from global file */
3232 case PR_SRV_STATE_FILE_GLOBAL:
3233 /* there was an error while generating global server state file path */
3234 if (globalfilepathlen == 0)
3235 continue;
3236 filepath = globalfilepath;
3237 fileopenerr = 1;
3238 break;
3239 /* this backend has its own file */
3240 case PR_SRV_STATE_FILE_LOCAL:
3241 localfilepathlen = 0;
3242 localfilepath[0] = '\0';
3243 len = 0;
3244 /* create the localfilepath variable */
3245 /* absolute path or no base directory provided */
3246 if ((curproxy->server_state_file_name[0] == '/') || (!global.server_state_base)) {
3247 len = strlen(curproxy->server_state_file_name);
3248 if (len > MAXPATHLEN) {
3249 localfilepathlen = 0;
3250 goto localfileerror;
3251 }
3252 memcpy(localfilepath, curproxy->server_state_file_name, len);
3253 localfilepath[len] = '\0';
3254 localfilepathlen = len;
3255 }
3256 else if (global.server_state_base) {
3257 len = strlen(global.server_state_base);
3258 localfilepathlen += len;
3259
3260 if (localfilepathlen > MAXPATHLEN) {
3261 localfilepathlen = 0;
3262 goto localfileerror;
3263 }
Olivier Houchard17f8b902018-10-16 18:35:01 +02003264 memcpy(localfilepath, global.server_state_base, len);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003265 localfilepath[localfilepathlen] = 0;
3266
3267 /* append a slash if needed */
3268 if (!localfilepathlen || localfilepath[localfilepathlen - 1] != '/') {
3269 if (localfilepathlen + 1 > MAXPATHLEN) {
3270 localfilepathlen = 0;
3271 goto localfileerror;
3272 }
3273 localfilepath[localfilepathlen++] = '/';
3274 }
3275
3276 len = strlen(curproxy->server_state_file_name);
3277 if (localfilepathlen + len > MAXPATHLEN) {
3278 localfilepathlen = 0;
3279 goto localfileerror;
3280 }
3281 memcpy(localfilepath + localfilepathlen, curproxy->server_state_file_name, len);
3282 localfilepathlen += len;
3283 localfilepath[localfilepathlen++] = 0;
3284 }
3285 filepath = localfilepath;
3286 localfileerror:
3287 if (localfilepathlen == 0)
3288 localfilepath[0] = '\0';
3289
3290 break;
3291 case PR_SRV_STATE_FILE_NONE:
3292 default:
3293 continue;
3294 }
3295
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003296 /* when global file is used, we get data from the tree
3297 * Note that in such case we don't check backend name neither uuid.
3298 * Backend name can't be wrong since it's used as a key to retrieve the server state
3299 * line from the tree.
3300 */
3301 if (curproxy->load_server_state_from_file == PR_SRV_STATE_FILE_GLOBAL) {
3302 struct server *srv = curproxy->srv;
3303 while (srv) {
3304 struct ebmb_node *node;
3305 struct state_line *st;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003306
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003307 chunk_printf(&trash, "%s %s", curproxy->id, srv->id);
3308 node = ebst_lookup(&state_file, trash.area);
3309 if (!node)
3310 goto next;
Dragan Dosencf4fb032015-11-04 23:03:26 +01003311
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003312 st = container_of(node, struct state_line, name_name);
3313 memcpy(mybuf, st->line, strlen(st->line));
3314 mybuf[strlen(st->line)] = 0;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003315
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003316 srv_state_parse_line(mybuf, global_file_version, params, srv_params);
3317 if (params[0] == NULL)
3318 goto next;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003319
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003320 srv_update_state(srv, global_file_version, srv_params);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003321
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003322 next:
3323 srv = srv->next;
3324 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003325
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003326 continue; /* next proxy in list */
3327 }
3328 else {
3329 /* load 'local' state file */
3330 errno = 0;
3331 f = fopen(filepath, "r");
3332 if (errno && fileopenerr)
3333 ha_warning("Can't open server state file '%s': %s\n", filepath, strerror(errno));
3334 if (!f)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003335 continue;
3336
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003337 mybuf[0] = '\0';
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003338
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003339 /* first character of first line of the file must contain the version of the export */
3340 version = srv_state_get_version(f);
3341 if (version == 0) {
3342 ha_warning("Can't get version of the server state file '%s'\n", filepath);
3343 goto fileclose;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003344 }
3345
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003346 while (fgets(mybuf, SRV_STATE_LINE_MAXLEN, f)) {
3347 int bk_f_forced_id = 0;
3348 int check_id = 0;
3349 int check_name = 0;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003350
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003351 srv_state_parse_line(mybuf, version, params, srv_params);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003352
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003353 if (params[0] == NULL) {
3354 continue;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003355 }
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003356
3357 /* if line is incomplete line, then ignore it.
3358 * otherwise, update useful flags */
3359 switch (version) {
3360 case 1:
3361 bk_f_forced_id = (atoi(params[15]) & PR_O_FORCED_ID);
3362 check_id = (atoi(params[0]) == curproxy->uuid);
3363 check_name = (strcmp(curproxy->id, params[1]) == 0);
3364 break;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003365 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003366
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003367 bk = curproxy;
3368
3369 /* if backend can't be found, let's continue */
3370 if (!check_id && !check_name)
3371 continue;
3372 else if (!check_id && check_name) {
3373 ha_warning("backend ID mismatch: from server state file: '%s', from running config '%d'\n", params[0], bk->uuid);
3374 send_log(bk, LOG_NOTICE, "backend ID mismatch: from server state file: '%s', from running config '%d'\n", params[0], bk->uuid);
3375 }
3376 else if (check_id && !check_name) {
3377 ha_warning("backend name mismatch: from server state file: '%s', from running config '%s'\n", params[1], bk->id);
3378 send_log(bk, LOG_NOTICE, "backend name mismatch: from server state file: '%s', from running config '%s'\n", params[1], bk->id);
3379 /* if name doesn't match, we still want to update curproxy if the backend id
3380 * was forced in previous the previous configuration */
3381 if (!bk_f_forced_id)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003382 continue;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003383 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003384
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003385 /* look for the server by its name: param[3] */
3386 srv = server_find_best_match(bk, params[3], 0, NULL);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003387
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003388 if (!srv) {
3389 /* if no server found, then warning and continue with next line */
3390 ha_warning("can't find server '%s' in backend '%s'\n",
3391 params[3], params[1]);
3392 send_log(bk, LOG_NOTICE, "can't find server '%s' in backend '%s'\n",
3393 params[3], params[1]);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003394 continue;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003395 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003396
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003397 /* now we can proceed with server's state update */
3398 srv_update_state(srv, version, srv_params);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003399 }
Ilya Shipitsindc6e8a92020-07-16 02:02:40 +05003400
3401 fileclose:
3402 fclose(f);
3403
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003404 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003405 }
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003406
3407 /* now free memory allocated for the tree */
3408 for (node = ebmb_first(&state_file), next_node = node ? ebmb_next(node) : NULL;
3409 node;
3410 node = next_node, next_node = node ? ebmb_next(node) : NULL) {
3411 st = container_of(node, struct state_line, name_name);
3412 ebmb_delete(&st->name_name);
3413 free(st->line);
3414 free(st);
3415 }
3416
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003417}
3418
Simon Horman7d09b9a2013-02-12 10:45:51 +09003419/*
Baptiste Assmann14e40142015-04-14 01:13:07 +02003420 * update a server's current IP address.
3421 * ip is a pointer to the new IP address, whose address family is ip_sin_family.
3422 * ip is in network format.
3423 * updater is a string which contains an information about the requester of the update.
3424 * updater is used if not NULL.
3425 *
3426 * A log line and a stderr warning message is generated based on server's backend options.
Willy Tarreau46b7f532018-08-21 11:54:26 +02003427 *
3428 * Must be called with the server lock held.
Baptiste Assmann14e40142015-04-14 01:13:07 +02003429 */
Thierry Fournierd35b7a62016-02-24 08:23:22 +01003430int update_server_addr(struct server *s, void *ip, int ip_sin_family, const char *updater)
Baptiste Assmann14e40142015-04-14 01:13:07 +02003431{
Christopher Fauletd6c6b5f2020-09-08 10:27:24 +02003432 /* save the new IP family & address if necessary */
3433 switch (ip_sin_family) {
3434 case AF_INET:
3435 if (s->addr.ss_family == ip_sin_family &&
3436 !memcmp(ip, &((struct sockaddr_in *)&s->addr)->sin_addr.s_addr, 4))
3437 return 0;
3438 break;
3439 case AF_INET6:
3440 if (s->addr.ss_family == ip_sin_family &&
3441 !memcmp(ip, &((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr, 16))
3442 return 0;
3443 break;
3444 };
3445
Baptiste Assmann14e40142015-04-14 01:13:07 +02003446 /* generates a log line and a warning on stderr */
3447 if (1) {
3448 /* book enough space for both IPv4 and IPv6 */
3449 char oldip[INET6_ADDRSTRLEN];
3450 char newip[INET6_ADDRSTRLEN];
3451
3452 memset(oldip, '\0', INET6_ADDRSTRLEN);
3453 memset(newip, '\0', INET6_ADDRSTRLEN);
3454
3455 /* copy old IP address in a string */
3456 switch (s->addr.ss_family) {
3457 case AF_INET:
3458 inet_ntop(s->addr.ss_family, &((struct sockaddr_in *)&s->addr)->sin_addr, oldip, INET_ADDRSTRLEN);
3459 break;
3460 case AF_INET6:
3461 inet_ntop(s->addr.ss_family, &((struct sockaddr_in6 *)&s->addr)->sin6_addr, oldip, INET6_ADDRSTRLEN);
3462 break;
Christopher Fauletb0b76072020-09-08 10:38:40 +02003463 default:
3464 strcpy(oldip, "(none)");
3465 break;
Baptiste Assmann14e40142015-04-14 01:13:07 +02003466 };
3467
3468 /* copy new IP address in a string */
3469 switch (ip_sin_family) {
3470 case AF_INET:
3471 inet_ntop(ip_sin_family, ip, newip, INET_ADDRSTRLEN);
3472 break;
3473 case AF_INET6:
3474 inet_ntop(ip_sin_family, ip, newip, INET6_ADDRSTRLEN);
3475 break;
3476 };
3477
3478 /* save log line into a buffer */
3479 chunk_printf(&trash, "%s/%s changed its IP from %s to %s by %s",
3480 s->proxy->id, s->id, oldip, newip, updater);
3481
3482 /* write the buffer on stderr */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003483 ha_warning("%s.\n", trash.area);
Baptiste Assmann14e40142015-04-14 01:13:07 +02003484
3485 /* send a log */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003486 send_log(s->proxy, LOG_NOTICE, "%s.\n", trash.area);
Baptiste Assmann14e40142015-04-14 01:13:07 +02003487 }
3488
3489 /* save the new IP family */
3490 s->addr.ss_family = ip_sin_family;
3491 /* save the new IP address */
3492 switch (ip_sin_family) {
3493 case AF_INET:
Willy Tarreaueec1d382016-07-13 11:59:39 +02003494 memcpy(&((struct sockaddr_in *)&s->addr)->sin_addr.s_addr, ip, 4);
Baptiste Assmann14e40142015-04-14 01:13:07 +02003495 break;
3496 case AF_INET6:
3497 memcpy(((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr, ip, 16);
3498 break;
3499 };
Olivier Houchard4e694042017-03-14 20:01:29 +01003500 srv_set_dyncookie(s);
Baptiste Assmann14e40142015-04-14 01:13:07 +02003501
3502 return 0;
3503}
3504
3505/*
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003506 * This function update a server's addr and port only for AF_INET and AF_INET6 families.
3507 *
3508 * Caller can pass its name through <updater> to get it integrated in the response message
3509 * returned by the function.
3510 *
3511 * The function first does the following, in that order:
3512 * - validates the new addr and/or port
3513 * - checks if an update is required (new IP or port is different than current ones)
3514 * - checks the update is allowed:
3515 * - don't switch from/to a family other than AF_INET4 and AF_INET6
3516 * - allow all changes if no CHECKS are configured
3517 * - if CHECK is configured:
3518 * - if switch to port map (SRV_F_MAPPORTS), ensure health check have their own ports
3519 * - applies required changes to both ADDR and PORT if both 'required' and 'allowed'
3520 * conditions are met
Willy Tarreau46b7f532018-08-21 11:54:26 +02003521 *
3522 * Must be called with the server lock held.
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003523 */
3524const char *update_server_addr_port(struct server *s, const char *addr, const char *port, char *updater)
3525{
3526 struct sockaddr_storage sa;
3527 int ret, port_change_required;
3528 char current_addr[INET6_ADDRSTRLEN];
David Carlier327298c2016-11-20 10:42:38 +00003529 uint16_t current_port, new_port;
Willy Tarreau83061a82018-07-13 11:56:34 +02003530 struct buffer *msg;
Olivier Houchard4e694042017-03-14 20:01:29 +01003531 int changed = 0;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003532
3533 msg = get_trash_chunk();
3534 chunk_reset(msg);
3535
3536 if (addr) {
3537 memset(&sa, 0, sizeof(struct sockaddr_storage));
3538 if (str2ip2(addr, &sa, 0) == NULL) {
3539 chunk_printf(msg, "Invalid addr '%s'", addr);
3540 goto out;
3541 }
3542
3543 /* changes are allowed on AF_INET* families only */
3544 if ((sa.ss_family != AF_INET) && (sa.ss_family != AF_INET6)) {
3545 chunk_printf(msg, "Update to families other than AF_INET and AF_INET6 supported only through configuration file");
3546 goto out;
3547 }
3548
3549 /* collecting data currently setup */
3550 memset(current_addr, '\0', sizeof(current_addr));
3551 ret = addr_to_str(&s->addr, current_addr, sizeof(current_addr));
3552 /* changes are allowed on AF_INET* families only */
3553 if ((ret != AF_INET) && (ret != AF_INET6)) {
3554 chunk_printf(msg, "Update for the current server address family is only supported through configuration file");
3555 goto out;
3556 }
3557
3558 /* applying ADDR changes if required and allowed
3559 * ipcmp returns 0 when both ADDR are the same
3560 */
3561 if (ipcmp(&s->addr, &sa) == 0) {
3562 chunk_appendf(msg, "no need to change the addr");
3563 goto port;
3564 }
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003565 ipcpy(&sa, &s->addr);
Olivier Houchard4e694042017-03-14 20:01:29 +01003566 changed = 1;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003567
3568 /* we also need to update check's ADDR only if it uses the server's one */
3569 if ((s->check.state & CHK_ST_CONFIGURED) && (s->flags & SRV_F_CHECKADDR)) {
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003570 ipcpy(&sa, &s->check.addr);
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003571 }
3572
3573 /* we also need to update agent ADDR only if it use the server's one */
3574 if ((s->agent.state & CHK_ST_CONFIGURED) && (s->flags & SRV_F_AGENTADDR)) {
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003575 ipcpy(&sa, &s->agent.addr);
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003576 }
3577
3578 /* update report for caller */
3579 chunk_printf(msg, "IP changed from '%s' to '%s'", current_addr, addr);
3580 }
3581
3582 port:
3583 if (port) {
3584 char sign = '\0';
3585 char *endptr;
3586
3587 if (addr)
3588 chunk_appendf(msg, ", ");
3589
3590 /* collecting data currently setup */
Willy Tarreau04276f32017-01-06 17:41:29 +01003591 current_port = s->svc_port;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003592
3593 /* check if PORT change is required */
3594 port_change_required = 0;
3595
3596 sign = *port;
Ryabin Sergey77ee7522017-01-11 19:39:55 +04003597 errno = 0;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003598 new_port = strtol(port, &endptr, 10);
3599 if ((errno != 0) || (port == endptr)) {
3600 chunk_appendf(msg, "problem converting port '%s' to an int", port);
3601 goto out;
3602 }
3603
3604 /* check if caller triggers a port mapped or offset */
3605 if (sign == '-' || (sign == '+')) {
3606 /* check if server currently uses port map */
3607 if (!(s->flags & SRV_F_MAPPORTS)) {
3608 /* switch from fixed port to port map mandatorily triggers
3609 * a port change */
3610 port_change_required = 1;
3611 /* check is configured
3612 * we're switching from a fixed port to a SRV_F_MAPPORTS (mapped) port
3613 * prevent PORT change if check doesn't have it's dedicated port while switching
3614 * to port mapping */
3615 if ((s->check.state & CHK_ST_CONFIGURED) && !(s->flags & SRV_F_CHECKPORT)) {
3616 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.");
3617 goto out;
3618 }
3619 }
3620 /* we're already using port maps */
3621 else {
3622 port_change_required = current_port != new_port;
3623 }
3624 }
3625 /* fixed port */
3626 else {
3627 port_change_required = current_port != new_port;
3628 }
3629
3630 /* applying PORT changes if required and update response message */
3631 if (port_change_required) {
3632 /* apply new port */
Willy Tarreau04276f32017-01-06 17:41:29 +01003633 s->svc_port = new_port;
Olivier Houchard4e694042017-03-14 20:01:29 +01003634 changed = 1;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003635
3636 /* prepare message */
3637 chunk_appendf(msg, "port changed from '");
3638 if (s->flags & SRV_F_MAPPORTS)
3639 chunk_appendf(msg, "+");
3640 chunk_appendf(msg, "%d' to '", current_port);
3641
3642 if (sign == '-') {
3643 s->flags |= SRV_F_MAPPORTS;
3644 chunk_appendf(msg, "%c", sign);
3645 /* just use for result output */
3646 new_port = -new_port;
3647 }
3648 else if (sign == '+') {
3649 s->flags |= SRV_F_MAPPORTS;
3650 chunk_appendf(msg, "%c", sign);
3651 }
3652 else {
3653 s->flags &= ~SRV_F_MAPPORTS;
3654 }
3655
3656 chunk_appendf(msg, "%d'", new_port);
3657
3658 /* we also need to update health checks port only if it uses server's realport */
3659 if ((s->check.state & CHK_ST_CONFIGURED) && !(s->flags & SRV_F_CHECKPORT)) {
3660 s->check.port = new_port;
3661 }
3662 }
3663 else {
3664 chunk_appendf(msg, "no need to change the port");
3665 }
3666 }
3667
3668out:
William Dauchy6318d332020-05-02 21:52:36 +02003669 if (changed) {
3670 /* force connection cleanup on the given server */
3671 srv_cleanup_connections(s);
Olivier Houchard4e694042017-03-14 20:01:29 +01003672 srv_set_dyncookie(s);
William Dauchy6318d332020-05-02 21:52:36 +02003673 }
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003674 if (updater)
3675 chunk_appendf(msg, " by '%s'", updater);
3676 chunk_appendf(msg, "\n");
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003677 return msg->area;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003678}
3679
3680
3681/*
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003682 * update server status based on result of name resolution
3683 * returns:
3684 * 0 if server status is updated
3685 * 1 if server status has not changed
Willy Tarreau46b7f532018-08-21 11:54:26 +02003686 *
3687 * Must be called with the server lock held.
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003688 */
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003689int snr_update_srv_status(struct server *s, int has_no_ip)
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003690{
Christopher Faulet67957bd2017-09-27 11:00:59 +02003691 struct dns_resolvers *resolvers = s->resolvers;
3692 struct dns_resolution *resolution = s->dns_requester->resolution;
3693 int exp;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003694
Jerome Magnin012261a2020-07-28 13:38:22 +02003695 /* If resolution is NULL we're dealing with SRV records Additional records */
3696 if (resolution == NULL) {
Baptiste Assmann87138c32020-08-04 10:57:21 +02003697 /* since this server has an IP, it can go back in production */
3698 if (has_no_ip == 0) {
3699 srv_clr_admin_flag(s, SRV_ADMF_RMAINT);
3700 return 1;
3701 }
3702
Jerome Magnin012261a2020-07-28 13:38:22 +02003703 if (s->next_admin & SRV_ADMF_RMAINT)
3704 return 1;
3705
3706 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "entry removed from SRV record");
3707 return 0;
3708 }
3709
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003710 switch (resolution->status) {
3711 case RSLV_STATUS_NONE:
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003712 /* status when HAProxy has just (re)started.
3713 * Nothing to do, since the task is already automatically started */
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003714 break;
3715
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01003716 case RSLV_STATUS_VALID:
3717 /*
3718 * resume health checks
3719 * server will be turned back on if health check is safe
3720 */
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003721 if (has_no_ip) {
Emeric Brun52a91d32017-08-31 14:41:55 +02003722 if (s->next_admin & SRV_ADMF_RMAINT)
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003723 return 1;
3724 srv_set_admin_flag(s, SRV_ADMF_RMAINT,
3725 "No IP for server ");
Christopher Faulet67957bd2017-09-27 11:00:59 +02003726 return 0;
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003727 }
Christopher Faulet67957bd2017-09-27 11:00:59 +02003728
Emeric Brun52a91d32017-08-31 14:41:55 +02003729 if (!(s->next_admin & SRV_ADMF_RMAINT))
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01003730 return 1;
3731 srv_clr_admin_flag(s, SRV_ADMF_RMAINT);
3732 chunk_printf(&trash, "Server %s/%s administratively READY thanks to valid DNS answer",
3733 s->proxy->id, s->id);
3734
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003735 ha_warning("%s.\n", trash.area);
3736 send_log(s->proxy, LOG_NOTICE, "%s.\n", trash.area);
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01003737 return 0;
3738
3739 case RSLV_STATUS_NX:
3740 /* stop server if resolution is NX for a long enough period */
Christopher Faulet67957bd2017-09-27 11:00:59 +02003741 exp = tick_add(resolution->last_valid, resolvers->hold.nx);
3742 if (!tick_is_expired(exp, now_ms))
3743 break;
3744
3745 if (s->next_admin & SRV_ADMF_RMAINT)
3746 return 1;
3747 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "DNS NX status");
3748 return 0;
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01003749
3750 case RSLV_STATUS_TIMEOUT:
3751 /* stop server if resolution is TIMEOUT for a long enough period */
Christopher Faulet67957bd2017-09-27 11:00:59 +02003752 exp = tick_add(resolution->last_valid, resolvers->hold.timeout);
3753 if (!tick_is_expired(exp, now_ms))
3754 break;
3755
3756 if (s->next_admin & SRV_ADMF_RMAINT)
3757 return 1;
3758 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "DNS timeout status");
3759 return 0;
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01003760
3761 case RSLV_STATUS_REFUSED:
3762 /* stop server if resolution is REFUSED for a long enough period */
Christopher Faulet67957bd2017-09-27 11:00:59 +02003763 exp = tick_add(resolution->last_valid, resolvers->hold.refused);
3764 if (!tick_is_expired(exp, now_ms))
3765 break;
3766
3767 if (s->next_admin & SRV_ADMF_RMAINT)
3768 return 1;
3769 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "DNS refused status");
3770 return 0;
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01003771
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003772 default:
Christopher Faulet67957bd2017-09-27 11:00:59 +02003773 /* stop server if resolution failed for a long enough period */
3774 exp = tick_add(resolution->last_valid, resolvers->hold.other);
3775 if (!tick_is_expired(exp, now_ms))
3776 break;
3777
3778 if (s->next_admin & SRV_ADMF_RMAINT)
3779 return 1;
3780 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "unspecified DNS error");
3781 return 0;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003782 }
3783
3784 return 1;
3785}
3786
3787/*
3788 * Server Name Resolution valid response callback
3789 * It expects:
3790 * - <nameserver>: the name server which answered the valid response
3791 * - <response>: buffer containing a valid DNS response
3792 * - <response_len>: size of <response>
3793 * It performs the following actions:
3794 * - ignore response if current ip found and server family not met
3795 * - update with first new ip found if family is met and current IP is not found
3796 * returns:
3797 * 0 on error
3798 * 1 when no error or safe ignore
Olivier Houchard28381072017-11-06 17:30:28 +01003799 *
3800 * Must be called with server lock held
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003801 */
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003802int snr_resolution_cb(struct dns_requester *requester, struct dns_nameserver *nameserver)
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003803{
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003804 struct server *s = NULL;
3805 struct dns_resolution *resolution = NULL;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003806 void *serverip, *firstip;
3807 short server_sin_family, firstip_sin_family;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003808 int ret;
Willy Tarreau83061a82018-07-13 11:56:34 +02003809 struct buffer *chk = get_trash_chunk();
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003810 int has_no_ip = 0;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003811
Christopher Faulet67957bd2017-09-27 11:00:59 +02003812 s = objt_server(requester->owner);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003813 if (!s)
3814 return 1;
3815
Christopher Faulet67957bd2017-09-27 11:00:59 +02003816 resolution = s->dns_requester->resolution;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003817
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003818 /* initializing variables */
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003819 firstip = NULL; /* pointer to the first valid response found */
3820 /* it will be used as the new IP if a change is required */
3821 firstip_sin_family = AF_UNSPEC;
3822 serverip = NULL; /* current server IP address */
3823
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003824 /* initializing server IP pointer */
3825 server_sin_family = s->addr.ss_family;
3826 switch (server_sin_family) {
3827 case AF_INET:
3828 serverip = &((struct sockaddr_in *)&s->addr)->sin_addr.s_addr;
3829 break;
3830
3831 case AF_INET6:
3832 serverip = &((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr;
3833 break;
3834
Willy Tarreau3acfcd12017-01-06 19:18:32 +01003835 case AF_UNSPEC:
3836 break;
3837
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003838 default:
3839 goto invalid;
3840 }
3841
Baptiste Assmann729c9012017-05-22 15:13:10 +02003842 ret = dns_get_ip_from_response(&resolution->response, &s->dns_opts,
Thierry Fournierada34842016-02-17 21:25:09 +01003843 serverip, server_sin_family, &firstip,
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02003844 &firstip_sin_family, s);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003845
3846 switch (ret) {
3847 case DNS_UPD_NO:
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003848 goto update_status;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003849
3850 case DNS_UPD_SRVIP_NOT_FOUND:
3851 goto save_ip;
3852
3853 case DNS_UPD_CNAME:
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003854 goto invalid;
3855
Baptiste Assmann0453a1d2015-09-09 00:51:08 +02003856 case DNS_UPD_NO_IP_FOUND:
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003857 has_no_ip = 1;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003858 goto update_status;
Baptiste Assmann0453a1d2015-09-09 00:51:08 +02003859
Baptiste Assmannfad03182015-10-28 02:03:32 +01003860 case DNS_UPD_NAME_ERROR:
Baptiste Assmannfad03182015-10-28 02:03:32 +01003861 /* update resolution status to OTHER error type */
Christopher Faulet67957bd2017-09-27 11:00:59 +02003862 resolution->status = RSLV_STATUS_OTHER;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003863 goto update_status;
Baptiste Assmannfad03182015-10-28 02:03:32 +01003864
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003865 default:
3866 goto invalid;
3867
3868 }
3869
3870 save_ip:
Christopher Faulet67957bd2017-09-27 11:00:59 +02003871 if (nameserver) {
Amaury Denoyellefbd0bc92020-10-05 11:49:46 +02003872 nameserver->counters->update++;
Christopher Faulet67957bd2017-09-27 11:00:59 +02003873 /* save the first ip we found */
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003874 chunk_printf(chk, "%s/%s", nameserver->resolvers->id, nameserver->id);
Christopher Faulet67957bd2017-09-27 11:00:59 +02003875 }
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003876 else
3877 chunk_printf(chk, "DNS cache");
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003878 update_server_addr(s, firstip, firstip_sin_family, (char *) chk->area);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003879
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003880 update_status:
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003881 snr_update_srv_status(s, has_no_ip);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003882 return 1;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003883
3884 invalid:
Christopher Faulet3bbd65b2017-09-15 11:55:45 +02003885 if (nameserver) {
Amaury Denoyellefbd0bc92020-10-05 11:49:46 +02003886 nameserver->counters->invalid++;
Christopher Faulet67957bd2017-09-27 11:00:59 +02003887 goto update_status;
Christopher Faulet3bbd65b2017-09-15 11:55:45 +02003888 }
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003889 snr_update_srv_status(s, has_no_ip);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003890 return 0;
3891}
3892
3893/*
3894 * Server Name Resolution error management callback
3895 * returns:
3896 * 0 on error
3897 * 1 when no error or safe ignore
Willy Tarreau46b7f532018-08-21 11:54:26 +02003898 *
3899 * Grabs the server's lock.
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003900 */
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003901int snr_resolution_error_cb(struct dns_requester *requester, int error_code)
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003902{
Christopher Faulet67957bd2017-09-27 11:00:59 +02003903 struct server *s;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003904
Christopher Faulet67957bd2017-09-27 11:00:59 +02003905 s = objt_server(requester->owner);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003906 if (!s)
3907 return 1;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003908 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003909 snr_update_srv_status(s, 0);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003910 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02003911 return 1;
3912}
3913
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02003914/*
3915 * Function to check if <ip> is already affected to a server in the backend
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003916 * which owns <srv> and is up.
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02003917 * It returns a pointer to the first server found or NULL if <ip> is not yet
3918 * assigned.
Olivier Houchard28381072017-11-06 17:30:28 +01003919 *
3920 * Must be called with server lock held
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02003921 */
3922struct server *snr_check_ip_callback(struct server *srv, void *ip, unsigned char *ip_family)
3923{
3924 struct server *tmpsrv;
3925 struct proxy *be;
3926
3927 if (!srv)
3928 return NULL;
3929
3930 be = srv->proxy;
3931 for (tmpsrv = be->srv; tmpsrv; tmpsrv = tmpsrv->next) {
Emeric Brune9fd6b52017-11-02 17:20:39 +01003932 /* we found the current server is the same, ignore it */
3933 if (srv == tmpsrv)
3934 continue;
3935
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02003936 /* We want to compare the IP in the record with the IP of the servers in the
3937 * same backend, only if:
3938 * * DNS resolution is enabled on the server
3939 * * the hostname used for the resolution by our server is the same than the
3940 * one used for the server found in the backend
3941 * * the server found in the backend is not our current server
3942 */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003943 HA_SPIN_LOCK(SERVER_LOCK, &tmpsrv->lock);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003944 if ((tmpsrv->hostname_dn == NULL) ||
3945 (srv->hostname_dn_len != tmpsrv->hostname_dn_len) ||
3946 (strcmp(srv->hostname_dn, tmpsrv->hostname_dn) != 0) ||
Emeric Brune9fd6b52017-11-02 17:20:39 +01003947 (srv->puid == tmpsrv->puid)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003948 HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock);
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02003949 continue;
Emeric Brune9fd6b52017-11-02 17:20:39 +01003950 }
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02003951
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003952 /* If the server has been taken down, don't consider it */
Emeric Brune9fd6b52017-11-02 17:20:39 +01003953 if (tmpsrv->next_admin & SRV_ADMF_RMAINT) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003954 HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock);
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003955 continue;
Emeric Brune9fd6b52017-11-02 17:20:39 +01003956 }
Olivier Houcharda8c6db82017-07-06 18:46:47 +02003957
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02003958 /* At this point, we have 2 different servers using the same DNS hostname
3959 * for their respective resolution.
3960 */
3961 if (*ip_family == tmpsrv->addr.ss_family &&
3962 ((tmpsrv->addr.ss_family == AF_INET &&
3963 memcmp(ip, &((struct sockaddr_in *)&tmpsrv->addr)->sin_addr, 4) == 0) ||
3964 (tmpsrv->addr.ss_family == AF_INET6 &&
3965 memcmp(ip, &((struct sockaddr_in6 *)&tmpsrv->addr)->sin6_addr, 16) == 0))) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003966 HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock);
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02003967 return tmpsrv;
3968 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003969 HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock);
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02003970 }
3971
Emeric Brune9fd6b52017-11-02 17:20:39 +01003972
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02003973 return NULL;
3974}
3975
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01003976/* Sets the server's address (srv->addr) from srv->hostname using the libc's
3977 * resolver. This is suited for initial address configuration. Returns 0 on
3978 * success otherwise a non-zero error code. In case of error, *err_code, if
3979 * not NULL, is filled up.
3980 */
3981int srv_set_addr_via_libc(struct server *srv, int *err_code)
3982{
3983 if (str2ip2(srv->hostname, &srv->addr, 1) == NULL) {
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01003984 if (err_code)
Willy Tarreau465b6e52016-11-07 19:19:22 +01003985 *err_code |= ERR_WARN;
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01003986 return 1;
3987 }
3988 return 0;
3989}
3990
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003991/* Set the server's FDQN (->hostname) from <hostname>.
3992 * Returns -1 if failed, 0 if not.
Willy Tarreau46b7f532018-08-21 11:54:26 +02003993 *
3994 * Must be called with the server lock held.
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003995 */
Olivier Houchardd16bfe62017-10-31 15:21:19 +01003996int srv_set_fqdn(struct server *srv, const char *hostname, int dns_locked)
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003997{
Baptiste Assmann201c07f2017-05-22 15:17:15 +02003998 struct dns_resolution *resolution;
Christopher Faulet67957bd2017-09-27 11:00:59 +02003999 char *hostname_dn;
4000 int hostname_len, hostname_dn_len;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004001
Frédéric Lécaille5afb3cf2018-08-21 15:04:23 +02004002 /* Note that the server lock is already held. */
4003 if (!srv->resolvers)
4004 return -1;
4005
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004006 if (!dns_locked)
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004007 HA_SPIN_LOCK(DNS_LOCK, &srv->resolvers->lock);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004008 /* run time DNS resolution was not active for this server
4009 * and we can't enable it at run time for now.
4010 */
4011 if (!srv->dns_requester)
Christopher Fauletb2812a62017-10-04 16:17:58 +02004012 goto err;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004013
4014 chunk_reset(&trash);
Christopher Faulet67957bd2017-09-27 11:00:59 +02004015 hostname_len = strlen(hostname);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004016 hostname_dn = trash.area;
Christopher Faulet67957bd2017-09-27 11:00:59 +02004017 hostname_dn_len = dns_str_to_dn_label(hostname, hostname_len + 1,
4018 hostname_dn, trash.size);
4019 if (hostname_dn_len == -1)
Christopher Fauletb2812a62017-10-04 16:17:58 +02004020 goto err;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004021
Christopher Faulet67957bd2017-09-27 11:00:59 +02004022 resolution = srv->dns_requester->resolution;
4023 if (resolution &&
4024 resolution->hostname_dn &&
4025 !strcmp(resolution->hostname_dn, hostname_dn))
Christopher Fauletb2812a62017-10-04 16:17:58 +02004026 goto end;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004027
Christopher Faulet67957bd2017-09-27 11:00:59 +02004028 dns_unlink_resolution(srv->dns_requester);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004029
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004030 free(srv->hostname);
4031 free(srv->hostname_dn);
Christopher Faulet67957bd2017-09-27 11:00:59 +02004032 srv->hostname = strdup(hostname);
4033 srv->hostname_dn = strdup(hostname_dn);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004034 srv->hostname_dn_len = hostname_dn_len;
4035 if (!srv->hostname || !srv->hostname_dn)
Christopher Fauletb2812a62017-10-04 16:17:58 +02004036 goto err;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004037
Baptiste Assmann13a92322019-06-07 09:40:55 +02004038 if (srv->flags & SRV_F_NO_RESOLUTION)
4039 goto end;
4040
Olivier Houchard55dcdf42017-11-06 15:15:04 +01004041 if (dns_link_resolution(srv, OBJ_TYPE_SERVER, 1) == -1)
Christopher Fauletb2812a62017-10-04 16:17:58 +02004042 goto err;
4043
4044 end:
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004045 if (!dns_locked)
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004046 HA_SPIN_UNLOCK(DNS_LOCK, &srv->resolvers->lock);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004047 return 0;
Christopher Fauletb2812a62017-10-04 16:17:58 +02004048
4049 err:
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004050 if (!dns_locked)
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004051 HA_SPIN_UNLOCK(DNS_LOCK, &srv->resolvers->lock);
Christopher Fauletb2812a62017-10-04 16:17:58 +02004052 return -1;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004053}
4054
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004055/* Sets the server's address (srv->addr) from srv->lastaddr which was filled
4056 * from the state file. This is suited for initial address configuration.
4057 * Returns 0 on success otherwise a non-zero error code. In case of error,
4058 * *err_code, if not NULL, is filled up.
4059 */
4060static int srv_apply_lastaddr(struct server *srv, int *err_code)
4061{
4062 if (!str2ip2(srv->lastaddr, &srv->addr, 0)) {
4063 if (err_code)
4064 *err_code |= ERR_WARN;
4065 return 1;
4066 }
4067 return 0;
4068}
4069
Willy Tarreau25e51522016-11-04 15:10:17 +01004070/* returns 0 if no error, otherwise a combination of ERR_* flags */
4071static int srv_iterate_initaddr(struct server *srv)
4072{
4073 int return_code = 0;
4074 int err_code;
4075 unsigned int methods;
4076
4077 methods = srv->init_addr_methods;
4078 if (!methods) { // default to "last,libc"
4079 srv_append_initaddr(&methods, SRV_IADDR_LAST);
4080 srv_append_initaddr(&methods, SRV_IADDR_LIBC);
4081 }
4082
Willy Tarreau3eed10e2016-11-07 21:03:16 +01004083 /* "-dr" : always append "none" so that server addresses resolution
4084 * failures are silently ignored, this is convenient to validate some
4085 * configs out of their environment.
4086 */
4087 if (global.tune.options & GTUNE_RESOLVE_DONTFAIL)
4088 srv_append_initaddr(&methods, SRV_IADDR_NONE);
4089
Willy Tarreau25e51522016-11-04 15:10:17 +01004090 while (methods) {
4091 err_code = 0;
4092 switch (srv_get_next_initaddr(&methods)) {
4093 case SRV_IADDR_LAST:
4094 if (!srv->lastaddr)
4095 continue;
4096 if (srv_apply_lastaddr(srv, &err_code) == 0)
Olivier Houchard4e694042017-03-14 20:01:29 +01004097 goto out;
Willy Tarreau25e51522016-11-04 15:10:17 +01004098 return_code |= err_code;
4099 break;
4100
4101 case SRV_IADDR_LIBC:
4102 if (!srv->hostname)
4103 continue;
4104 if (srv_set_addr_via_libc(srv, &err_code) == 0)
Olivier Houchard4e694042017-03-14 20:01:29 +01004105 goto out;
Willy Tarreau25e51522016-11-04 15:10:17 +01004106 return_code |= err_code;
4107 break;
4108
Willy Tarreau37ebe122016-11-04 15:17:58 +01004109 case SRV_IADDR_NONE:
4110 srv_set_admin_flag(srv, SRV_ADMF_RMAINT, NULL);
Willy Tarreau465b6e52016-11-07 19:19:22 +01004111 if (return_code) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01004112 ha_warning("parsing [%s:%d] : 'server %s' : could not resolve address '%s', disabling server.\n",
4113 srv->conf.file, srv->conf.line, srv->id, srv->hostname);
Willy Tarreau465b6e52016-11-07 19:19:22 +01004114 }
Willy Tarreau37ebe122016-11-04 15:17:58 +01004115 return return_code;
4116
Willy Tarreau4310d362016-11-02 15:05:56 +01004117 case SRV_IADDR_IP:
4118 ipcpy(&srv->init_addr, &srv->addr);
4119 if (return_code) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01004120 ha_warning("parsing [%s:%d] : 'server %s' : could not resolve address '%s', falling back to configured address.\n",
4121 srv->conf.file, srv->conf.line, srv->id, srv->hostname);
Willy Tarreau4310d362016-11-02 15:05:56 +01004122 }
Olivier Houchard4e694042017-03-14 20:01:29 +01004123 goto out;
Willy Tarreau4310d362016-11-02 15:05:56 +01004124
Willy Tarreau25e51522016-11-04 15:10:17 +01004125 default: /* unhandled method */
4126 break;
4127 }
4128 }
4129
4130 if (!return_code) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01004131 ha_alert("parsing [%s:%d] : 'server %s' : no method found to resolve address '%s'\n",
Willy Tarreau25e51522016-11-04 15:10:17 +01004132 srv->conf.file, srv->conf.line, srv->id, srv->hostname);
4133 }
Willy Tarreau465b6e52016-11-07 19:19:22 +01004134 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01004135 ha_alert("parsing [%s:%d] : 'server %s' : could not resolve address '%s'.\n",
Willy Tarreau465b6e52016-11-07 19:19:22 +01004136 srv->conf.file, srv->conf.line, srv->id, srv->hostname);
4137 }
Willy Tarreau25e51522016-11-04 15:10:17 +01004138
4139 return_code |= ERR_ALERT | ERR_FATAL;
4140 return return_code;
Olivier Houchard4e694042017-03-14 20:01:29 +01004141out:
4142 srv_set_dyncookie(srv);
4143 return return_code;
Willy Tarreau25e51522016-11-04 15:10:17 +01004144}
4145
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004146/*
4147 * This function parses all backends and all servers within each backend
4148 * and performs servers' addr resolution based on information provided by:
4149 * - configuration file
4150 * - server-state file (states provided by an 'old' haproxy process)
4151 *
4152 * Returns 0 if no error, otherwise, a combination of ERR_ flags.
4153 */
4154int srv_init_addr(void)
4155{
4156 struct proxy *curproxy;
4157 int return_code = 0;
4158
Olivier Houchardfbc74e82017-11-24 16:54:05 +01004159 curproxy = proxies_list;
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004160 while (curproxy) {
4161 struct server *srv;
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004162
4163 /* servers are in backend only */
4164 if (!(curproxy->cap & PR_CAP_BE))
4165 goto srv_init_addr_next;
4166
Willy Tarreau25e51522016-11-04 15:10:17 +01004167 for (srv = curproxy->srv; srv; srv = srv->next)
Willy Tarreau3d609a72017-09-06 14:22:45 +02004168 if (srv->hostname)
4169 return_code |= srv_iterate_initaddr(srv);
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004170
4171 srv_init_addr_next:
4172 curproxy = curproxy->next;
4173 }
4174
4175 return return_code;
4176}
4177
Willy Tarreau46b7f532018-08-21 11:54:26 +02004178/*
4179 * Must be called with the server lock held.
4180 */
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004181const char *update_server_fqdn(struct server *server, const char *fqdn, const char *updater, int dns_locked)
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004182{
4183
Willy Tarreau83061a82018-07-13 11:56:34 +02004184 struct buffer *msg;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004185
4186 msg = get_trash_chunk();
4187 chunk_reset(msg);
4188
Olivier Houchard8da5f982017-08-04 18:35:36 +02004189 if (server->hostname && !strcmp(fqdn, server->hostname)) {
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004190 chunk_appendf(msg, "no need to change the FDQN");
4191 goto out;
4192 }
4193
4194 if (strlen(fqdn) > DNS_MAX_NAME_SIZE || invalid_domainchar(fqdn)) {
4195 chunk_appendf(msg, "invalid fqdn '%s'", fqdn);
4196 goto out;
4197 }
4198
4199 chunk_appendf(msg, "%s/%s changed its FQDN from %s to %s",
4200 server->proxy->id, server->id, server->hostname, fqdn);
4201
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004202 if (srv_set_fqdn(server, fqdn, dns_locked) < 0) {
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004203 chunk_reset(msg);
4204 chunk_appendf(msg, "could not update %s/%s FQDN",
4205 server->proxy->id, server->id);
4206 goto out;
4207 }
4208
4209 /* Flag as FQDN set from stats socket. */
Emeric Brun52a91d32017-08-31 14:41:55 +02004210 server->next_admin |= SRV_ADMF_HMAINT;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004211
4212 out:
4213 if (updater)
4214 chunk_appendf(msg, " by '%s'", updater);
4215 chunk_appendf(msg, "\n");
4216
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004217 return msg->area;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004218}
4219
4220
Willy Tarreau21b069d2016-11-23 17:15:08 +01004221/* Expects to find a backend and a server in <arg> under the form <backend>/<server>,
4222 * and returns the pointer to the server. Otherwise, display adequate error messages
Willy Tarreau3b6e5472016-11-24 15:53:53 +01004223 * on the CLI, sets the CLI's state to CLI_ST_PRINT and returns NULL. This is only
Willy Tarreau21b069d2016-11-23 17:15:08 +01004224 * used for CLI commands requiring a server name.
4225 * Important: the <arg> is modified to remove the '/'.
4226 */
4227struct server *cli_find_server(struct appctx *appctx, char *arg)
4228{
4229 struct proxy *px;
4230 struct server *sv;
4231 char *line;
4232
4233 /* split "backend/server" and make <line> point to server */
4234 for (line = arg; *line; line++)
4235 if (*line == '/') {
4236 *line++ = '\0';
4237 break;
4238 }
4239
4240 if (!*line || !*arg) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004241 cli_err(appctx, "Require 'backend/server'.\n");
Willy Tarreau21b069d2016-11-23 17:15:08 +01004242 return NULL;
4243 }
4244
4245 if (!get_backend_server(arg, line, &px, &sv)) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004246 cli_err(appctx, px ? "No such server.\n" : "No such backend.\n");
Willy Tarreau21b069d2016-11-23 17:15:08 +01004247 return NULL;
4248 }
4249
Willy Tarreauc3914d42020-09-24 08:39:22 +02004250 if (px->disabled) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004251 cli_err(appctx, "Proxy is disabled.\n");
Willy Tarreau21b069d2016-11-23 17:15:08 +01004252 return NULL;
4253 }
4254
4255 return sv;
4256}
4257
William Lallemand222baf22016-11-19 02:00:33 +01004258
Willy Tarreau46b7f532018-08-21 11:54:26 +02004259/* grabs the server lock */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004260static int cli_parse_set_server(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand222baf22016-11-19 02:00:33 +01004261{
4262 struct server *sv;
4263 const char *warning;
4264
4265 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4266 return 1;
4267
4268 sv = cli_find_server(appctx, args[2]);
4269 if (!sv)
4270 return 1;
4271
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004272 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02004273
William Lallemand222baf22016-11-19 02:00:33 +01004274 if (strcmp(args[3], "weight") == 0) {
4275 warning = server_parse_weight_change_request(sv, args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02004276 if (warning)
4277 cli_err(appctx, warning);
William Lallemand222baf22016-11-19 02:00:33 +01004278 }
4279 else if (strcmp(args[3], "state") == 0) {
4280 if (strcmp(args[4], "ready") == 0)
4281 srv_adm_set_ready(sv);
4282 else if (strcmp(args[4], "drain") == 0)
4283 srv_adm_set_drain(sv);
4284 else if (strcmp(args[4], "maint") == 0)
4285 srv_adm_set_maint(sv);
Willy Tarreau9d008692019-08-09 11:21:01 +02004286 else
4287 cli_err(appctx, "'set server <srv> state' expects 'ready', 'drain' and 'maint'.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004288 }
4289 else if (strcmp(args[3], "health") == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004290 if (sv->track)
4291 cli_err(appctx, "cannot change health on a tracking server.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004292 else if (strcmp(args[4], "up") == 0) {
4293 sv->check.health = sv->check.rise + sv->check.fall - 1;
Emeric Brun5a133512017-10-19 14:42:30 +02004294 srv_set_running(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004295 }
4296 else if (strcmp(args[4], "stopping") == 0) {
4297 sv->check.health = sv->check.rise + sv->check.fall - 1;
Emeric Brun5a133512017-10-19 14:42:30 +02004298 srv_set_stopping(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004299 }
4300 else if (strcmp(args[4], "down") == 0) {
4301 sv->check.health = 0;
Emeric Brun5a133512017-10-19 14:42:30 +02004302 srv_set_stopped(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004303 }
Willy Tarreau9d008692019-08-09 11:21:01 +02004304 else
4305 cli_err(appctx, "'set server <srv> health' expects 'up', 'stopping', or 'down'.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004306 }
4307 else if (strcmp(args[3], "agent") == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004308 if (!(sv->agent.state & CHK_ST_ENABLED))
4309 cli_err(appctx, "agent checks are not enabled on this server.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004310 else if (strcmp(args[4], "up") == 0) {
4311 sv->agent.health = sv->agent.rise + sv->agent.fall - 1;
Emeric Brun5a133512017-10-19 14:42:30 +02004312 srv_set_running(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004313 }
4314 else if (strcmp(args[4], "down") == 0) {
4315 sv->agent.health = 0;
Emeric Brun5a133512017-10-19 14:42:30 +02004316 srv_set_stopped(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004317 }
Willy Tarreau9d008692019-08-09 11:21:01 +02004318 else
4319 cli_err(appctx, "'set server <srv> agent' expects 'up' or 'down'.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004320 }
Misiek2da082d2017-01-09 09:40:42 +01004321 else if (strcmp(args[3], "agent-addr") == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004322 if (!(sv->agent.state & CHK_ST_ENABLED))
4323 cli_err(appctx, "agent checks are not enabled on this server.\n");
4324 else if (str2ip(args[4], &sv->agent.addr) == NULL)
4325 cli_err(appctx, "incorrect addr address given for agent.\n");
Misiek2da082d2017-01-09 09:40:42 +01004326 }
4327 else if (strcmp(args[3], "agent-send") == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004328 if (!(sv->agent.state & CHK_ST_ENABLED))
4329 cli_err(appctx, "agent checks are not enabled on this server.\n");
4330 else {
Christopher Faulet0ae3d1d2020-04-06 17:54:24 +02004331 if (!set_srv_agent_send(sv, args[4]))
Willy Tarreau9d008692019-08-09 11:21:01 +02004332 cli_err(appctx, "cannot allocate memory for new string.\n");
Misiek2da082d2017-01-09 09:40:42 +01004333 }
4334 }
William Lallemand222baf22016-11-19 02:00:33 +01004335 else if (strcmp(args[3], "check-port") == 0) {
4336 int i = 0;
4337 if (strl2irc(args[4], strlen(args[4]), &i) != 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004338 cli_err(appctx, "'set server <srv> check-port' expects an integer as argument.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004339 goto out_unlock;
William Lallemand222baf22016-11-19 02:00:33 +01004340 }
4341 if ((i < 0) || (i > 65535)) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004342 cli_err(appctx, "provided port is not valid.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004343 goto out_unlock;
William Lallemand222baf22016-11-19 02:00:33 +01004344 }
4345 /* prevent the update of port to 0 if MAPPORTS are in use */
4346 if ((sv->flags & SRV_F_MAPPORTS) && (i == 0)) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004347 cli_err(appctx, "can't unset 'port' since MAPPORTS is in use.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004348 goto out_unlock;
William Lallemand222baf22016-11-19 02:00:33 +01004349 }
4350 sv->check.port = i;
Willy Tarreau9d008692019-08-09 11:21:01 +02004351 cli_msg(appctx, LOG_NOTICE, "health check port updated.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004352 }
4353 else if (strcmp(args[3], "addr") == 0) {
4354 char *addr = NULL;
4355 char *port = NULL;
4356 if (strlen(args[4]) == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004357 cli_err(appctx, "set server <b>/<s> addr requires an address and optionally a port.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004358 goto out_unlock;
William Lallemand222baf22016-11-19 02:00:33 +01004359 }
4360 else {
4361 addr = args[4];
4362 }
4363 if (strcmp(args[5], "port") == 0) {
4364 port = args[6];
4365 }
4366 warning = update_server_addr_port(sv, addr, port, "stats socket command");
Willy Tarreau9d008692019-08-09 11:21:01 +02004367 if (warning)
4368 cli_msg(appctx, LOG_WARNING, warning);
William Lallemand222baf22016-11-19 02:00:33 +01004369 srv_clr_admin_flag(sv, SRV_ADMF_RMAINT);
4370 }
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004371 else if (strcmp(args[3], "fqdn") == 0) {
4372 if (!*args[4]) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004373 cli_err(appctx, "set server <b>/<s> fqdn requires a FQDN.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004374 goto out_unlock;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004375 }
Baptiste Assmann13a92322019-06-07 09:40:55 +02004376 /* ensure runtime resolver will process this new fqdn */
4377 if (sv->flags & SRV_F_NO_RESOLUTION) {
4378 sv->flags &= ~SRV_F_NO_RESOLUTION;
4379 }
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004380 warning = update_server_fqdn(sv, args[4], "stats socket command", 0);
Willy Tarreau9d008692019-08-09 11:21:01 +02004381 if (warning)
4382 cli_msg(appctx, LOG_WARNING, warning);
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004383 }
William Lallemand222baf22016-11-19 02:00:33 +01004384 else {
Willy Tarreau9d008692019-08-09 11:21:01 +02004385 cli_err(appctx,
4386 "'set server <srv>' only supports 'agent', 'health', 'state',"
4387 " 'weight', 'addr', 'fqdn' and 'check-port'.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004388 }
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004389 out_unlock:
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004390 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
William Lallemand222baf22016-11-19 02:00:33 +01004391 return 1;
4392}
4393
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004394static int cli_parse_get_weight(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand6b160942016-11-22 12:34:35 +01004395{
4396 struct stream_interface *si = appctx->owner;
4397 struct proxy *px;
4398 struct server *sv;
4399 char *line;
4400
4401
4402 /* split "backend/server" and make <line> point to server */
4403 for (line = args[2]; *line; line++)
4404 if (*line == '/') {
4405 *line++ = '\0';
4406 break;
4407 }
4408
Willy Tarreau9d008692019-08-09 11:21:01 +02004409 if (!*line)
4410 return cli_err(appctx, "Require 'backend/server'.\n");
William Lallemand6b160942016-11-22 12:34:35 +01004411
Willy Tarreau9d008692019-08-09 11:21:01 +02004412 if (!get_backend_server(args[2], line, &px, &sv))
4413 return cli_err(appctx, px ? "No such server.\n" : "No such backend.\n");
William Lallemand6b160942016-11-22 12:34:35 +01004414
4415 /* return server's effective weight at the moment */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004416 snprintf(trash.area, trash.size, "%d (initial %d)\n", sv->uweight,
4417 sv->iweight);
4418 if (ci_putstr(si_ic(si), trash.area) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01004419 si_rx_room_blk(si);
Christopher Faulet90b5abe2016-12-05 14:25:08 +01004420 return 0;
4421 }
William Lallemand6b160942016-11-22 12:34:35 +01004422 return 1;
4423}
4424
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004425/* Parse a "set weight" command.
4426 *
4427 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004428 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004429static int cli_parse_set_weight(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand6b160942016-11-22 12:34:35 +01004430{
4431 struct server *sv;
4432 const char *warning;
4433
4434 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4435 return 1;
4436
4437 sv = cli_find_server(appctx, args[2]);
4438 if (!sv)
4439 return 1;
4440
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004441 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
4442
William Lallemand6b160942016-11-22 12:34:35 +01004443 warning = server_parse_weight_change_request(sv, args[3]);
Willy Tarreau9d008692019-08-09 11:21:01 +02004444 if (warning)
4445 cli_err(appctx, warning);
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004446
4447 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
4448
William Lallemand6b160942016-11-22 12:34:35 +01004449 return 1;
4450}
4451
Willy Tarreau46b7f532018-08-21 11:54:26 +02004452/* parse a "set maxconn server" command. It always returns 1.
4453 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004454 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004455 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004456static int cli_parse_set_maxconn_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreaub8026272016-11-23 11:26:56 +01004457{
4458 struct server *sv;
4459 const char *warning;
4460
4461 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4462 return 1;
4463
4464 sv = cli_find_server(appctx, args[3]);
4465 if (!sv)
4466 return 1;
4467
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004468 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
4469
Willy Tarreaub8026272016-11-23 11:26:56 +01004470 warning = server_parse_maxconn_change_request(sv, args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02004471 if (warning)
4472 cli_err(appctx, warning);
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004473
4474 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
4475
Willy Tarreaub8026272016-11-23 11:26:56 +01004476 return 1;
4477}
William Lallemand6b160942016-11-22 12:34:35 +01004478
Willy Tarreau46b7f532018-08-21 11:54:26 +02004479/* parse a "disable agent" command. It always returns 1.
4480 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004481 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004482 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004483static int cli_parse_disable_agent(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004484{
4485 struct server *sv;
4486
4487 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4488 return 1;
4489
4490 sv = cli_find_server(appctx, args[2]);
4491 if (!sv)
4492 return 1;
4493
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004494 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004495 sv->agent.state &= ~CHK_ST_ENABLED;
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004496 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004497 return 1;
4498}
4499
Willy Tarreau46b7f532018-08-21 11:54:26 +02004500/* parse a "disable health" command. It always returns 1.
4501 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004502 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004503 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004504static int cli_parse_disable_health(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004505{
4506 struct server *sv;
4507
4508 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4509 return 1;
4510
4511 sv = cli_find_server(appctx, args[2]);
4512 if (!sv)
4513 return 1;
4514
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004515 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004516 sv->check.state &= ~CHK_ST_ENABLED;
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004517 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004518 return 1;
4519}
4520
Willy Tarreau46b7f532018-08-21 11:54:26 +02004521/* parse a "disable server" command. It always returns 1.
4522 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004523 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004524 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004525static int cli_parse_disable_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauffb4d582016-11-24 12:47:00 +01004526{
4527 struct server *sv;
4528
4529 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4530 return 1;
4531
4532 sv = cli_find_server(appctx, args[2]);
4533 if (!sv)
4534 return 1;
4535
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004536 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreauffb4d582016-11-24 12:47:00 +01004537 srv_adm_set_maint(sv);
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004538 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreauffb4d582016-11-24 12:47:00 +01004539 return 1;
4540}
4541
Willy Tarreau46b7f532018-08-21 11:54:26 +02004542/* parse a "enable agent" command. It always returns 1.
4543 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004544 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004545 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004546static int cli_parse_enable_agent(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004547{
4548 struct server *sv;
4549
4550 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4551 return 1;
4552
4553 sv = cli_find_server(appctx, args[2]);
4554 if (!sv)
4555 return 1;
4556
Willy Tarreau9d008692019-08-09 11:21:01 +02004557 if (!(sv->agent.state & CHK_ST_CONFIGURED))
4558 return cli_err(appctx, "Agent was not configured on this server, cannot enable.\n");
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004559
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004560 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004561 sv->agent.state |= CHK_ST_ENABLED;
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004562 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004563 return 1;
4564}
4565
Willy Tarreau46b7f532018-08-21 11:54:26 +02004566/* parse a "enable health" command. It always returns 1.
4567 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004568 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004569 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004570static int cli_parse_enable_health(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004571{
4572 struct server *sv;
4573
4574 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4575 return 1;
4576
4577 sv = cli_find_server(appctx, args[2]);
4578 if (!sv)
4579 return 1;
4580
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004581 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004582 sv->check.state |= CHK_ST_ENABLED;
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004583 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004584 return 1;
4585}
4586
Willy Tarreau46b7f532018-08-21 11:54:26 +02004587/* parse a "enable server" command. It always returns 1.
4588 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004589 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004590 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004591static int cli_parse_enable_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauffb4d582016-11-24 12:47:00 +01004592{
4593 struct server *sv;
4594
4595 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4596 return 1;
4597
4598 sv = cli_find_server(appctx, args[2]);
4599 if (!sv)
4600 return 1;
4601
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004602 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreauffb4d582016-11-24 12:47:00 +01004603 srv_adm_set_ready(sv);
Olivier Houcharde9bad0a2018-01-17 17:39:34 +01004604 if (!(sv->flags & SRV_F_COOKIESET)
4605 && (sv->proxy->ck_opts & PR_CK_DYNAMIC) &&
4606 sv->cookie)
4607 srv_check_for_dup_dyncookie(sv);
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004608 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreauffb4d582016-11-24 12:47:00 +01004609 return 1;
4610}
4611
William Lallemand222baf22016-11-19 02:00:33 +01004612/* register cli keywords */
4613static struct cli_kw_list cli_kws = {{ },{
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004614 { { "disable", "agent", NULL }, "disable agent : disable agent checks (use 'set server' instead)", cli_parse_disable_agent, NULL },
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004615 { { "disable", "health", NULL }, "disable health : disable health checks (use 'set server' instead)", cli_parse_disable_health, NULL },
Willy Tarreauffb4d582016-11-24 12:47:00 +01004616 { { "disable", "server", NULL }, "disable server : disable a server for maintenance (use 'set server' instead)", cli_parse_disable_server, NULL },
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004617 { { "enable", "agent", NULL }, "enable agent : enable agent checks (use 'set server' instead)", cli_parse_enable_agent, NULL },
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004618 { { "enable", "health", NULL }, "enable health : enable health checks (use 'set server' instead)", cli_parse_enable_health, NULL },
Willy Tarreauffb4d582016-11-24 12:47:00 +01004619 { { "enable", "server", NULL }, "enable server : enable a disabled server (use 'set server' instead)", cli_parse_enable_server, NULL },
Willy Tarreaub8026272016-11-23 11:26:56 +01004620 { { "set", "maxconn", "server", NULL }, "set maxconn server : change a server's maxconn setting", cli_parse_set_maxconn_server, NULL },
William Lallemand222baf22016-11-19 02:00:33 +01004621 { { "set", "server", NULL }, "set server : change a server's state, weight or address", cli_parse_set_server },
William Lallemand6b160942016-11-22 12:34:35 +01004622 { { "get", "weight", NULL }, "get weight : report a server's current weight", cli_parse_get_weight },
4623 { { "set", "weight", NULL }, "set weight : change a server's weight (deprecated)", cli_parse_set_weight },
4624
William Lallemand222baf22016-11-19 02:00:33 +01004625 {{},}
4626}};
4627
Willy Tarreau0108d902018-11-25 19:14:37 +01004628INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004629
Emeric Brun64cc49c2017-10-03 14:46:45 +02004630/*
4631 * This function applies server's status changes, it is
4632 * is designed to be called asynchronously.
4633 *
Willy Tarreau1e690bb2020-10-22 11:30:59 +02004634 * Must be called with the server lock held. This may also be called at init
4635 * time as the result of parsing the state file, in which case no lock will be
4636 * held, and the server's warmup task can be null.
Emeric Brun64cc49c2017-10-03 14:46:45 +02004637 */
Willy Tarreau3ff577e2018-08-02 11:48:52 +02004638static void srv_update_status(struct server *s)
Emeric Brun64cc49c2017-10-03 14:46:45 +02004639{
4640 struct check *check = &s->check;
4641 int xferred;
4642 struct proxy *px = s->proxy;
4643 int prev_srv_count = s->proxy->srv_bck + s->proxy->srv_act;
4644 int srv_was_stopping = (s->cur_state == SRV_ST_STOPPING) || (s->cur_admin & SRV_ADMF_DRAIN);
4645 int log_level;
Willy Tarreau83061a82018-07-13 11:56:34 +02004646 struct buffer *tmptrash = NULL;
Emeric Brun64cc49c2017-10-03 14:46:45 +02004647
Emeric Brun64cc49c2017-10-03 14:46:45 +02004648 /* If currently main is not set we try to apply pending state changes */
4649 if (!(s->cur_admin & SRV_ADMF_MAINT)) {
4650 int next_admin;
4651
4652 /* Backup next admin */
4653 next_admin = s->next_admin;
4654
4655 /* restore current admin state */
4656 s->next_admin = s->cur_admin;
4657
4658 if ((s->cur_state != SRV_ST_STOPPED) && (s->next_state == SRV_ST_STOPPED)) {
4659 s->last_change = now.tv_sec;
4660 if (s->proxy->lbprm.set_server_status_down)
4661 s->proxy->lbprm.set_server_status_down(s);
4662
4663 if (s->onmarkeddown & HANA_ONMARKEDDOWN_SHUTDOWNSESSIONS)
4664 srv_shutdown_streams(s, SF_ERR_DOWN);
4665
4666 /* we might have streams queued on this server and waiting for
4667 * a connection. Those which are redispatchable will be queued
4668 * to another server or to the proxy itself.
4669 */
4670 xferred = pendconn_redistribute(s);
4671
4672 tmptrash = alloc_trash_chunk();
4673 if (tmptrash) {
4674 chunk_printf(tmptrash,
4675 "%sServer %s/%s is DOWN", s->flags & SRV_F_BACKUP ? "Backup " : "",
4676 s->proxy->id, s->id);
4677
Emeric Brun5a133512017-10-19 14:42:30 +02004678 srv_append_status(tmptrash, s, NULL, xferred, 0);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004679 ha_warning("%s.\n", tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02004680
4681 /* we don't send an alert if the server was previously paused */
4682 log_level = srv_was_stopping ? LOG_NOTICE : LOG_ALERT;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004683 send_log(s->proxy, log_level, "%s.\n",
4684 tmptrash->area);
4685 send_email_alert(s, log_level, "%s",
4686 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02004687 free_trash_chunk(tmptrash);
4688 tmptrash = NULL;
4689 }
4690 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
4691 set_backend_down(s->proxy);
4692
4693 s->counters.down_trans++;
4694 }
4695 else if ((s->cur_state != SRV_ST_STOPPING) && (s->next_state == SRV_ST_STOPPING)) {
4696 s->last_change = now.tv_sec;
4697 if (s->proxy->lbprm.set_server_status_down)
4698 s->proxy->lbprm.set_server_status_down(s);
4699
4700 /* we might have streams queued on this server and waiting for
4701 * a connection. Those which are redispatchable will be queued
4702 * to another server or to the proxy itself.
4703 */
4704 xferred = pendconn_redistribute(s);
4705
4706 tmptrash = alloc_trash_chunk();
4707 if (tmptrash) {
4708 chunk_printf(tmptrash,
4709 "%sServer %s/%s is stopping", s->flags & SRV_F_BACKUP ? "Backup " : "",
4710 s->proxy->id, s->id);
4711
Emeric Brun5a133512017-10-19 14:42:30 +02004712 srv_append_status(tmptrash, s, NULL, xferred, 0);
Emeric Brun64cc49c2017-10-03 14:46:45 +02004713
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004714 ha_warning("%s.\n", tmptrash->area);
4715 send_log(s->proxy, LOG_NOTICE, "%s.\n",
4716 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02004717 free_trash_chunk(tmptrash);
4718 tmptrash = NULL;
4719 }
4720
4721 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
4722 set_backend_down(s->proxy);
4723 }
4724 else if (((s->cur_state != SRV_ST_RUNNING) && (s->next_state == SRV_ST_RUNNING))
4725 || ((s->cur_state != SRV_ST_STARTING) && (s->next_state == SRV_ST_STARTING))) {
4726 if (s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) {
4727 if (s->proxy->last_change < now.tv_sec) // ignore negative times
4728 s->proxy->down_time += now.tv_sec - s->proxy->last_change;
4729 s->proxy->last_change = now.tv_sec;
4730 }
4731
Amaury Denoyellefe2bf092020-10-29 15:59:04 +01004732 if (s->cur_state == SRV_ST_STOPPED && s->last_change < now.tv_sec) // ignore negative times
Emeric Brun64cc49c2017-10-03 14:46:45 +02004733 s->down_time += now.tv_sec - s->last_change;
4734
4735 s->last_change = now.tv_sec;
Willy Tarreau1e690bb2020-10-22 11:30:59 +02004736 if (s->next_state == SRV_ST_STARTING && s->warmup)
Emeric Brun64cc49c2017-10-03 14:46:45 +02004737 task_schedule(s->warmup, tick_add(now_ms, MS_TO_TICKS(MAX(1000, s->slowstart / 20))));
4738
Willy Tarreau3ff577e2018-08-02 11:48:52 +02004739 server_recalc_eweight(s, 0);
Emeric Brun64cc49c2017-10-03 14:46:45 +02004740 /* now propagate the status change to any LB algorithms */
4741 if (px->lbprm.update_server_eweight)
4742 px->lbprm.update_server_eweight(s);
4743 else if (srv_willbe_usable(s)) {
4744 if (px->lbprm.set_server_status_up)
4745 px->lbprm.set_server_status_up(s);
4746 }
4747 else {
4748 if (px->lbprm.set_server_status_down)
4749 px->lbprm.set_server_status_down(s);
4750 }
4751
4752 /* If the server is set with "on-marked-up shutdown-backup-sessions",
4753 * and it's not a backup server and its effective weight is > 0,
4754 * then it can accept new connections, so we shut down all streams
4755 * on all backup servers.
4756 */
4757 if ((s->onmarkedup & HANA_ONMARKEDUP_SHUTDOWNBACKUPSESSIONS) &&
4758 !(s->flags & SRV_F_BACKUP) && s->next_eweight)
4759 srv_shutdown_backup_streams(s->proxy, SF_ERR_UP);
4760
4761 /* check if we can handle some connections queued at the proxy. We
4762 * will take as many as we can handle.
4763 */
4764 xferred = pendconn_grab_from_px(s);
4765
4766 tmptrash = alloc_trash_chunk();
4767 if (tmptrash) {
4768 chunk_printf(tmptrash,
4769 "%sServer %s/%s is UP", s->flags & SRV_F_BACKUP ? "Backup " : "",
4770 s->proxy->id, s->id);
4771
Emeric Brun5a133512017-10-19 14:42:30 +02004772 srv_append_status(tmptrash, s, NULL, xferred, 0);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004773 ha_warning("%s.\n", tmptrash->area);
4774 send_log(s->proxy, LOG_NOTICE, "%s.\n",
4775 tmptrash->area);
4776 send_email_alert(s, LOG_NOTICE, "%s",
4777 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02004778 free_trash_chunk(tmptrash);
4779 tmptrash = NULL;
4780 }
4781
4782 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
4783 set_backend_down(s->proxy);
4784 }
4785 else if (s->cur_eweight != s->next_eweight) {
4786 /* now propagate the status change to any LB algorithms */
4787 if (px->lbprm.update_server_eweight)
4788 px->lbprm.update_server_eweight(s);
4789 else if (srv_willbe_usable(s)) {
4790 if (px->lbprm.set_server_status_up)
4791 px->lbprm.set_server_status_up(s);
4792 }
4793 else {
4794 if (px->lbprm.set_server_status_down)
4795 px->lbprm.set_server_status_down(s);
4796 }
4797
4798 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
4799 set_backend_down(s->proxy);
4800 }
4801
4802 s->next_admin = next_admin;
4803 }
4804
Emeric Brun5a133512017-10-19 14:42:30 +02004805 /* reset operational state change */
4806 *s->op_st_chg.reason = 0;
4807 s->op_st_chg.status = s->op_st_chg.code = -1;
4808 s->op_st_chg.duration = 0;
Emeric Brun64cc49c2017-10-03 14:46:45 +02004809
4810 /* Now we try to apply pending admin changes */
4811
4812 /* Maintenance must also disable health checks */
4813 if (!(s->cur_admin & SRV_ADMF_MAINT) && (s->next_admin & SRV_ADMF_MAINT)) {
4814 if (s->check.state & CHK_ST_ENABLED) {
4815 s->check.state |= CHK_ST_PAUSED;
4816 check->health = 0;
4817 }
4818
4819 if (s->cur_state == SRV_ST_STOPPED) { /* server was already down */
Olivier Houchard796a2b32017-10-24 17:42:47 +02004820 tmptrash = alloc_trash_chunk();
4821 if (tmptrash) {
4822 chunk_printf(tmptrash,
4823 "%sServer %s/%s was DOWN and now enters maintenance%s%s%s",
4824 s->flags & SRV_F_BACKUP ? "Backup " : "", s->proxy->id, s->id,
4825 *(s->adm_st_chg_cause) ? " (" : "", s->adm_st_chg_cause, *(s->adm_st_chg_cause) ? ")" : "");
Emeric Brun64cc49c2017-10-03 14:46:45 +02004826
Olivier Houchard796a2b32017-10-24 17:42:47 +02004827 srv_append_status(tmptrash, s, NULL, -1, (s->next_admin & SRV_ADMF_FMAINT));
Emeric Brun64cc49c2017-10-03 14:46:45 +02004828
Olivier Houchard796a2b32017-10-24 17:42:47 +02004829 if (!(global.mode & MODE_STARTING)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004830 ha_warning("%s.\n", tmptrash->area);
4831 send_log(s->proxy, LOG_NOTICE, "%s.\n",
4832 tmptrash->area);
Olivier Houchard796a2b32017-10-24 17:42:47 +02004833 }
4834 free_trash_chunk(tmptrash);
4835 tmptrash = NULL;
Emeric Brun64cc49c2017-10-03 14:46:45 +02004836 }
Emeric Brun8f298292017-12-06 16:47:17 +01004837 /* commit new admin status */
4838
4839 s->cur_admin = s->next_admin;
Emeric Brun64cc49c2017-10-03 14:46:45 +02004840 }
4841 else { /* server was still running */
4842 check->health = 0; /* failure */
4843 s->last_change = now.tv_sec;
Emeric Brune3114802017-12-21 14:42:26 +01004844
4845 s->next_state = SRV_ST_STOPPED;
Emeric Brun64cc49c2017-10-03 14:46:45 +02004846 if (s->proxy->lbprm.set_server_status_down)
4847 s->proxy->lbprm.set_server_status_down(s);
4848
Emeric Brun64cc49c2017-10-03 14:46:45 +02004849 if (s->onmarkeddown & HANA_ONMARKEDDOWN_SHUTDOWNSESSIONS)
4850 srv_shutdown_streams(s, SF_ERR_DOWN);
4851
William Dauchy6318d332020-05-02 21:52:36 +02004852 /* force connection cleanup on the given server */
4853 srv_cleanup_connections(s);
Emeric Brun64cc49c2017-10-03 14:46:45 +02004854 /* we might have streams queued on this server and waiting for
4855 * a connection. Those which are redispatchable will be queued
4856 * to another server or to the proxy itself.
4857 */
4858 xferred = pendconn_redistribute(s);
4859
4860 tmptrash = alloc_trash_chunk();
4861 if (tmptrash) {
4862 chunk_printf(tmptrash,
4863 "%sServer %s/%s is going DOWN for maintenance%s%s%s",
4864 s->flags & SRV_F_BACKUP ? "Backup " : "",
4865 s->proxy->id, s->id,
4866 *(s->adm_st_chg_cause) ? " (" : "", s->adm_st_chg_cause, *(s->adm_st_chg_cause) ? ")" : "");
4867
4868 srv_append_status(tmptrash, s, NULL, xferred, (s->next_admin & SRV_ADMF_FMAINT));
4869
4870 if (!(global.mode & MODE_STARTING)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004871 ha_warning("%s.\n", tmptrash->area);
4872 send_log(s->proxy, srv_was_stopping ? LOG_NOTICE : LOG_ALERT, "%s.\n",
4873 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02004874 }
4875 free_trash_chunk(tmptrash);
4876 tmptrash = NULL;
4877 }
4878 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
4879 set_backend_down(s->proxy);
4880
4881 s->counters.down_trans++;
4882 }
4883 }
4884 else if ((s->cur_admin & SRV_ADMF_MAINT) && !(s->next_admin & SRV_ADMF_MAINT)) {
4885 /* OK here we're leaving maintenance, we have many things to check,
4886 * because the server might possibly be coming back up depending on
4887 * its state. In practice, leaving maintenance means that we should
4888 * immediately turn to UP (more or less the slowstart) under the
4889 * following conditions :
4890 * - server is neither checked nor tracked
4891 * - server tracks another server which is not checked
4892 * - server tracks another server which is already up
4893 * Which sums up as something simpler :
4894 * "either the tracking server is up or the server's checks are disabled
4895 * or up". Otherwise we only re-enable health checks. There's a special
4896 * case associated to the stopping state which can be inherited. Note
4897 * that the server might still be in drain mode, which is naturally dealt
4898 * with by the lower level functions.
4899 */
4900
4901 if (s->check.state & CHK_ST_ENABLED) {
4902 s->check.state &= ~CHK_ST_PAUSED;
4903 check->health = check->rise; /* start OK but check immediately */
4904 }
4905
4906 if ((!s->track || s->track->next_state != SRV_ST_STOPPED) &&
4907 (!(s->agent.state & CHK_ST_ENABLED) || (s->agent.health >= s->agent.rise)) &&
4908 (!(s->check.state & CHK_ST_ENABLED) || (s->check.health >= s->check.rise))) {
4909 if (s->track && s->track->next_state == SRV_ST_STOPPING) {
4910 s->next_state = SRV_ST_STOPPING;
4911 }
4912 else {
4913 s->next_state = SRV_ST_STARTING;
Willy Tarreau1e690bb2020-10-22 11:30:59 +02004914 if (s->slowstart > 0) {
4915 if (s->warmup)
4916 task_schedule(s->warmup, tick_add(now_ms, MS_TO_TICKS(MAX(1000, s->slowstart / 20))));
4917 }
Emeric Brun64cc49c2017-10-03 14:46:45 +02004918 else
4919 s->next_state = SRV_ST_RUNNING;
4920 }
4921
4922 }
4923
4924 tmptrash = alloc_trash_chunk();
4925 if (tmptrash) {
4926 if (!(s->next_admin & SRV_ADMF_FMAINT) && (s->cur_admin & SRV_ADMF_FMAINT)) {
4927 chunk_printf(tmptrash,
4928 "%sServer %s/%s is %s/%s (leaving forced maintenance)",
4929 s->flags & SRV_F_BACKUP ? "Backup " : "",
4930 s->proxy->id, s->id,
4931 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP",
4932 (s->next_admin & SRV_ADMF_DRAIN) ? "DRAIN" : "READY");
4933 }
4934 if (!(s->next_admin & SRV_ADMF_RMAINT) && (s->cur_admin & SRV_ADMF_RMAINT)) {
4935 chunk_printf(tmptrash,
4936 "%sServer %s/%s ('%s') is %s/%s (resolves again)",
4937 s->flags & SRV_F_BACKUP ? "Backup " : "",
4938 s->proxy->id, s->id, s->hostname,
4939 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP",
4940 (s->next_admin & SRV_ADMF_DRAIN) ? "DRAIN" : "READY");
4941 }
4942 if (!(s->next_admin & SRV_ADMF_IMAINT) && (s->cur_admin & SRV_ADMF_IMAINT)) {
4943 chunk_printf(tmptrash,
4944 "%sServer %s/%s is %s/%s (leaving maintenance)",
4945 s->flags & SRV_F_BACKUP ? "Backup " : "",
4946 s->proxy->id, s->id,
4947 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP",
4948 (s->next_admin & SRV_ADMF_DRAIN) ? "DRAIN" : "READY");
4949 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004950 ha_warning("%s.\n", tmptrash->area);
4951 send_log(s->proxy, LOG_NOTICE, "%s.\n",
4952 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02004953 free_trash_chunk(tmptrash);
4954 tmptrash = NULL;
4955 }
4956
Willy Tarreau3ff577e2018-08-02 11:48:52 +02004957 server_recalc_eweight(s, 0);
Emeric Brun64cc49c2017-10-03 14:46:45 +02004958 /* now propagate the status change to any LB algorithms */
4959 if (px->lbprm.update_server_eweight)
4960 px->lbprm.update_server_eweight(s);
4961 else if (srv_willbe_usable(s)) {
4962 if (px->lbprm.set_server_status_up)
4963 px->lbprm.set_server_status_up(s);
4964 }
4965 else {
4966 if (px->lbprm.set_server_status_down)
4967 px->lbprm.set_server_status_down(s);
4968 }
4969
4970 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
4971 set_backend_down(s->proxy);
4972
Willy Tarreau6a78e612018-08-07 10:14:53 +02004973 /* If the server is set with "on-marked-up shutdown-backup-sessions",
4974 * and it's not a backup server and its effective weight is > 0,
4975 * then it can accept new connections, so we shut down all streams
4976 * on all backup servers.
4977 */
4978 if ((s->onmarkedup & HANA_ONMARKEDUP_SHUTDOWNBACKUPSESSIONS) &&
4979 !(s->flags & SRV_F_BACKUP) && s->next_eweight)
4980 srv_shutdown_backup_streams(s->proxy, SF_ERR_UP);
4981
4982 /* check if we can handle some connections queued at the proxy. We
4983 * will take as many as we can handle.
4984 */
4985 xferred = pendconn_grab_from_px(s);
Emeric Brun64cc49c2017-10-03 14:46:45 +02004986 }
4987 else if (s->next_admin & SRV_ADMF_MAINT) {
4988 /* remaining in maintenance mode, let's inform precisely about the
4989 * situation.
4990 */
4991 if (!(s->next_admin & SRV_ADMF_FMAINT) && (s->cur_admin & SRV_ADMF_FMAINT)) {
4992 tmptrash = alloc_trash_chunk();
4993 if (tmptrash) {
4994 chunk_printf(tmptrash,
4995 "%sServer %s/%s is leaving forced maintenance but remains in maintenance",
4996 s->flags & SRV_F_BACKUP ? "Backup " : "",
4997 s->proxy->id, s->id);
4998
4999 if (s->track) /* normally it's mandatory here */
5000 chunk_appendf(tmptrash, " via %s/%s",
5001 s->track->proxy->id, s->track->id);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005002 ha_warning("%s.\n", tmptrash->area);
5003 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5004 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005005 free_trash_chunk(tmptrash);
5006 tmptrash = NULL;
5007 }
5008 }
5009 if (!(s->next_admin & SRV_ADMF_RMAINT) && (s->cur_admin & SRV_ADMF_RMAINT)) {
5010 tmptrash = alloc_trash_chunk();
5011 if (tmptrash) {
5012 chunk_printf(tmptrash,
5013 "%sServer %s/%s ('%s') resolves again but remains in maintenance",
5014 s->flags & SRV_F_BACKUP ? "Backup " : "",
5015 s->proxy->id, s->id, s->hostname);
5016
5017 if (s->track) /* normally it's mandatory here */
5018 chunk_appendf(tmptrash, " via %s/%s",
5019 s->track->proxy->id, s->track->id);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005020 ha_warning("%s.\n", tmptrash->area);
5021 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5022 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005023 free_trash_chunk(tmptrash);
5024 tmptrash = NULL;
5025 }
5026 }
5027 else if (!(s->next_admin & SRV_ADMF_IMAINT) && (s->cur_admin & SRV_ADMF_IMAINT)) {
5028 tmptrash = alloc_trash_chunk();
5029 if (tmptrash) {
5030 chunk_printf(tmptrash,
5031 "%sServer %s/%s remains in forced maintenance",
5032 s->flags & SRV_F_BACKUP ? "Backup " : "",
5033 s->proxy->id, s->id);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005034 ha_warning("%s.\n", tmptrash->area);
5035 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5036 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005037 free_trash_chunk(tmptrash);
5038 tmptrash = NULL;
5039 }
5040 }
5041 /* don't report anything when leaving drain mode and remaining in maintenance */
5042
5043 s->cur_admin = s->next_admin;
5044 }
5045
5046 if (!(s->next_admin & SRV_ADMF_MAINT)) {
5047 if (!(s->cur_admin & SRV_ADMF_DRAIN) && (s->next_admin & SRV_ADMF_DRAIN)) {
5048 /* drain state is applied only if not yet in maint */
5049
5050 s->last_change = now.tv_sec;
5051 if (px->lbprm.set_server_status_down)
5052 px->lbprm.set_server_status_down(s);
5053
5054 /* we might have streams queued on this server and waiting for
5055 * a connection. Those which are redispatchable will be queued
5056 * to another server or to the proxy itself.
5057 */
5058 xferred = pendconn_redistribute(s);
5059
5060 tmptrash = alloc_trash_chunk();
5061 if (tmptrash) {
5062 chunk_printf(tmptrash, "%sServer %s/%s enters drain state%s%s%s",
5063 s->flags & SRV_F_BACKUP ? "Backup " : "", s->proxy->id, s->id,
5064 *(s->adm_st_chg_cause) ? " (" : "", s->adm_st_chg_cause, *(s->adm_st_chg_cause) ? ")" : "");
5065
5066 srv_append_status(tmptrash, s, NULL, xferred, (s->next_admin & SRV_ADMF_FDRAIN));
5067
5068 if (!(global.mode & MODE_STARTING)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005069 ha_warning("%s.\n", tmptrash->area);
5070 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5071 tmptrash->area);
5072 send_email_alert(s, LOG_NOTICE, "%s",
5073 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005074 }
5075 free_trash_chunk(tmptrash);
5076 tmptrash = NULL;
5077 }
5078
5079 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5080 set_backend_down(s->proxy);
5081 }
5082 else if ((s->cur_admin & SRV_ADMF_DRAIN) && !(s->next_admin & SRV_ADMF_DRAIN)) {
5083 /* OK completely leaving drain mode */
5084 if (s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) {
5085 if (s->proxy->last_change < now.tv_sec) // ignore negative times
5086 s->proxy->down_time += now.tv_sec - s->proxy->last_change;
5087 s->proxy->last_change = now.tv_sec;
5088 }
5089
5090 if (s->last_change < now.tv_sec) // ignore negative times
5091 s->down_time += now.tv_sec - s->last_change;
5092 s->last_change = now.tv_sec;
Willy Tarreau3ff577e2018-08-02 11:48:52 +02005093 server_recalc_eweight(s, 0);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005094
5095 tmptrash = alloc_trash_chunk();
5096 if (tmptrash) {
5097 if (!(s->next_admin & SRV_ADMF_FDRAIN)) {
5098 chunk_printf(tmptrash,
5099 "%sServer %s/%s is %s (leaving forced drain)",
5100 s->flags & SRV_F_BACKUP ? "Backup " : "",
5101 s->proxy->id, s->id,
5102 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP");
5103 }
5104 else {
5105 chunk_printf(tmptrash,
5106 "%sServer %s/%s is %s (leaving drain)",
5107 s->flags & SRV_F_BACKUP ? "Backup " : "",
5108 s->proxy->id, s->id,
5109 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP");
5110 if (s->track) /* normally it's mandatory here */
5111 chunk_appendf(tmptrash, " via %s/%s",
5112 s->track->proxy->id, s->track->id);
5113 }
5114
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005115 ha_warning("%s.\n", tmptrash->area);
5116 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5117 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005118 free_trash_chunk(tmptrash);
5119 tmptrash = NULL;
5120 }
5121
5122 /* now propagate the status change to any LB algorithms */
5123 if (px->lbprm.update_server_eweight)
5124 px->lbprm.update_server_eweight(s);
5125 else if (srv_willbe_usable(s)) {
5126 if (px->lbprm.set_server_status_up)
5127 px->lbprm.set_server_status_up(s);
5128 }
5129 else {
5130 if (px->lbprm.set_server_status_down)
5131 px->lbprm.set_server_status_down(s);
5132 }
5133 }
5134 else if ((s->next_admin & SRV_ADMF_DRAIN)) {
5135 /* remaining in drain mode after removing one of its flags */
5136
5137 tmptrash = alloc_trash_chunk();
5138 if (tmptrash) {
5139 if (!(s->next_admin & SRV_ADMF_FDRAIN)) {
5140 chunk_printf(tmptrash,
5141 "%sServer %s/%s is leaving forced drain but remains in drain mode",
5142 s->flags & SRV_F_BACKUP ? "Backup " : "",
5143 s->proxy->id, s->id);
5144
5145 if (s->track) /* normally it's mandatory here */
5146 chunk_appendf(tmptrash, " via %s/%s",
5147 s->track->proxy->id, s->track->id);
5148 }
5149 else {
5150 chunk_printf(tmptrash,
5151 "%sServer %s/%s remains in forced drain mode",
5152 s->flags & SRV_F_BACKUP ? "Backup " : "",
5153 s->proxy->id, s->id);
5154 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005155 ha_warning("%s.\n", tmptrash->area);
5156 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5157 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005158 free_trash_chunk(tmptrash);
5159 tmptrash = NULL;
5160 }
5161
5162 /* commit new admin status */
5163
5164 s->cur_admin = s->next_admin;
5165 }
5166 }
5167
5168 /* Re-set log strings to empty */
Emeric Brun64cc49c2017-10-03 14:46:45 +02005169 *s->adm_st_chg_cause = 0;
5170}
Emeric Brun64cc49c2017-10-03 14:46:45 +02005171
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005172struct task *srv_cleanup_toremove_connections(struct task *task, void *context, unsigned short state)
5173{
5174 struct connection *conn;
5175
Willy Tarreau4d82bf52020-06-28 00:19:17 +02005176 while ((conn = MT_LIST_POP(&idle_conns[tid].toremove_conns,
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005177 struct connection *, list)) != NULL) {
Christopher Faulet73c12072019-04-08 11:23:22 +02005178 conn->mux->destroy(conn->ctx);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005179 }
5180
5181 return task;
5182}
5183
Olivier Houchardff1d0922020-06-29 20:15:59 +02005184/* Move toremove_nb connections from idle_list to toremove_list, -1 means
5185 * moving them all.
5186 * Returns the number of connections moved.
5187 */
5188static int srv_migrate_conns_to_remove(struct mt_list *idle_list, struct mt_list *toremove_list, int toremove_nb)
5189{
5190 struct mt_list *elt1, elt2;
5191 struct connection *conn;
5192 int i = 0;
5193
5194 mt_list_for_each_entry_safe(conn, idle_list, list, elt1, elt2) {
5195 if (toremove_nb != -1 && i >= toremove_nb)
5196 break;
5197 MT_LIST_DEL_SAFE_NOINIT(elt1);
Willy Tarreaude4db172020-07-10 08:10:29 +02005198 MT_LIST_ADDQ(toremove_list, &conn->list);
Olivier Houchardff1d0922020-06-29 20:15:59 +02005199 i++;
5200 }
5201 return i;
5202}
William Dauchy6318d332020-05-02 21:52:36 +02005203/* cleanup connections for a given server
5204 * might be useful when going on forced maintenance or live changing ip/port
5205 */
William Dauchy707ad322020-05-04 13:52:40 +02005206static void srv_cleanup_connections(struct server *srv)
William Dauchy6318d332020-05-02 21:52:36 +02005207{
William Dauchy6318d332020-05-02 21:52:36 +02005208 int did_remove;
5209 int i;
William Dauchy6318d332020-05-02 21:52:36 +02005210
Willy Tarreauc35bcfc2020-06-29 14:43:16 +02005211 /* check all threads starting with ours */
William Dauchy6318d332020-05-02 21:52:36 +02005212 HA_SPIN_LOCK(OTHER_LOCK, &idle_conn_srv_lock);
Willy Tarreauc35bcfc2020-06-29 14:43:16 +02005213 for (i = tid;;) {
William Dauchy6318d332020-05-02 21:52:36 +02005214 did_remove = 0;
Olivier Houchardff1d0922020-06-29 20:15:59 +02005215 if (srv_migrate_conns_to_remove(&srv->idle_conns[i], &idle_conns[i].toremove_conns, -1) > 0)
William Dauchy6318d332020-05-02 21:52:36 +02005216 did_remove = 1;
Olivier Houchardff1d0922020-06-29 20:15:59 +02005217 if (srv_migrate_conns_to_remove(&srv->safe_conns[i], &idle_conns[i].toremove_conns, -1) > 0)
5218 did_remove = 1;
William Dauchy6318d332020-05-02 21:52:36 +02005219 if (did_remove)
Willy Tarreau4d82bf52020-06-28 00:19:17 +02005220 task_wakeup(idle_conns[i].cleanup_task, TASK_WOKEN_OTHER);
Willy Tarreauc35bcfc2020-06-29 14:43:16 +02005221
5222 if ((i = ((i + 1 == global.nbthread) ? 0 : i + 1)) == tid)
5223 break;
William Dauchy6318d332020-05-02 21:52:36 +02005224 }
5225 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conn_srv_lock);
5226}
5227
Willy Tarreau980855b2019-02-07 14:59:29 +01005228struct task *srv_cleanup_idle_connections(struct task *task, void *context, unsigned short state)
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005229{
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005230 struct server *srv;
5231 struct eb32_node *eb;
5232 int i;
5233 unsigned int next_wakeup;
5234 int need_wakeup = 0;
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01005235
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005236 HA_SPIN_LOCK(OTHER_LOCK, &idle_conn_srv_lock);
5237 while (1) {
5238 int srv_is_empty = 1;
Olivier Houchard079cb9a2020-03-30 00:23:57 +02005239 int exceed_conns;
5240 int to_kill;
5241 int curr_idle;
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01005242
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005243 eb = eb32_lookup_ge(&idle_conn_srv, now_ms - TIMER_LOOK_BACK);
5244 if (!eb) {
5245 /* we might have reached the end of the tree, typically because
5246 * <now_ms> is in the first half and we're first scanning the last
5247 * half. Let's loop back to the beginning of the tree now.
5248 */
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005249
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005250 eb = eb32_first(&idle_conn_srv);
5251 if (likely(!eb))
5252 break;
5253 }
5254 if (tick_is_lt(now_ms, eb->key)) {
5255 /* timer not expired yet, revisit it later */
5256 next_wakeup = eb->key;
5257 need_wakeup = 1;
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005258 break;
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005259 }
5260 srv = eb32_entry(eb, struct server, idle_node);
Olivier Houchard079cb9a2020-03-30 00:23:57 +02005261
5262 /* Calculate how many idle connections we want to kill :
5263 * we want to remove half the difference between the total
5264 * of established connections (used or idle) and the max
5265 * number of used connections.
5266 */
5267 curr_idle = srv->curr_idle_conns;
5268 if (curr_idle == 0)
5269 goto remove;
Willy Tarreaubdb86bd2020-06-29 15:56:35 +02005270 exceed_conns = srv->curr_used_conns + curr_idle - MAX(srv->max_used_conns, srv->est_need_conns);
Olivier Houchard079cb9a2020-03-30 00:23:57 +02005271 exceed_conns = to_kill = exceed_conns / 2 + (exceed_conns & 1);
Willy Tarreaubdb86bd2020-06-29 15:56:35 +02005272
5273 srv->est_need_conns = (srv->est_need_conns + srv->max_used_conns + 1) / 2;
5274 if (srv->est_need_conns < srv->max_used_conns)
5275 srv->est_need_conns = srv->max_used_conns;
5276
Olivier Houchard079cb9a2020-03-30 00:23:57 +02005277 srv->max_used_conns = srv->curr_used_conns;
5278
Willy Tarreau18ed7892020-07-02 19:05:30 +02005279 if (exceed_conns <= 0)
5280 goto remove;
5281
Willy Tarreauc35bcfc2020-06-29 14:43:16 +02005282 /* check all threads starting with ours */
5283 for (i = tid;;) {
Olivier Houchard079cb9a2020-03-30 00:23:57 +02005284 int max_conn;
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005285 int j;
5286 int did_remove = 0;
5287
Olivier Houchard079cb9a2020-03-30 00:23:57 +02005288 max_conn = (exceed_conns * srv->curr_idle_thr[i]) /
5289 curr_idle + 1;
Olivier Houchardff1d0922020-06-29 20:15:59 +02005290
5291 j = srv_migrate_conns_to_remove(&srv->idle_conns[i], &idle_conns[i].toremove_conns, max_conn);
5292 if (j > 0)
5293 did_remove = 1;
5294 if (max_conn - j > 0 &&
5295 srv_migrate_conns_to_remove(&srv->safe_conns[i], &idle_conns[i].toremove_conns, max_conn - j) > 0)
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005296 did_remove = 1;
Olivier Houchardff1d0922020-06-29 20:15:59 +02005297
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005298 if (did_remove && max_conn < srv->curr_idle_thr[i])
5299 srv_is_empty = 0;
5300 if (did_remove)
Willy Tarreau4d82bf52020-06-28 00:19:17 +02005301 task_wakeup(idle_conns[i].cleanup_task, TASK_WOKEN_OTHER);
Willy Tarreauc35bcfc2020-06-29 14:43:16 +02005302
5303 if ((i = ((i + 1 == global.nbthread) ? 0 : i + 1)) == tid)
5304 break;
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005305 }
Olivier Houchard079cb9a2020-03-30 00:23:57 +02005306remove:
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005307 eb32_delete(&srv->idle_node);
5308 if (!srv_is_empty) {
5309 /* There are still more idle connections, add the
5310 * server back in the tree.
5311 */
5312 srv->idle_node.key = tick_add(srv->pool_purge_delay,
5313 now_ms);
5314 eb32_insert(&idle_conn_srv, &srv->idle_node);
5315 }
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005316 }
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005317 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conn_srv_lock);
5318
5319 if (need_wakeup)
5320 task->expire = next_wakeup;
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01005321 else
5322 task->expire = TICK_ETERNITY;
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005323
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005324 return task;
5325}
Olivier Houchard88698d92019-04-16 19:07:22 +02005326
Willy Tarreau76cc6992020-07-01 18:49:24 +02005327/* config parser for global "tune.idle-pool.shared", accepts "on" or "off" */
5328static int cfg_parse_idle_pool_shared(char **args, int section_type, struct proxy *curpx,
5329 struct proxy *defpx, const char *file, int line,
5330 char **err)
5331{
5332 if (too_many_args(1, args, err, NULL))
5333 return -1;
5334
5335 if (strcmp(args[1], "on") == 0)
5336 global.tune.options |= GTUNE_IDLE_POOL_SHARED;
5337 else if (strcmp(args[1], "off") == 0)
5338 global.tune.options &= ~GTUNE_IDLE_POOL_SHARED;
5339 else {
5340 memprintf(err, "'%s' expects either 'on' or 'off' but got '%s'.", args[0], args[1]);
5341 return -1;
5342 }
5343 return 0;
5344}
5345
Olivier Houchard88698d92019-04-16 19:07:22 +02005346/* config parser for global "tune.pool-{low,high}-fd-ratio" */
5347static int cfg_parse_pool_fd_ratio(char **args, int section_type, struct proxy *curpx,
5348 struct proxy *defpx, const char *file, int line,
5349 char **err)
5350{
5351 int arg = -1;
5352
5353 if (too_many_args(1, args, err, NULL))
5354 return -1;
5355
5356 if (*(args[1]) != 0)
5357 arg = atoi(args[1]);
5358
5359 if (arg < 0 || arg > 100) {
5360 memprintf(err, "'%s' expects an integer argument between 0 and 100.", args[0]);
5361 return -1;
5362 }
5363
5364 if (args[0][10] == 'h')
5365 global.tune.pool_high_ratio = arg;
5366 else
5367 global.tune.pool_low_ratio = arg;
5368 return 0;
5369}
5370
5371/* config keyword parsers */
5372static struct cfg_kw_list cfg_kws = {ILH, {
Willy Tarreau76cc6992020-07-01 18:49:24 +02005373 { CFG_GLOBAL, "tune.idle-pool.shared", cfg_parse_idle_pool_shared },
Olivier Houchard88698d92019-04-16 19:07:22 +02005374 { CFG_GLOBAL, "tune.pool-high-fd-ratio", cfg_parse_pool_fd_ratio },
5375 { CFG_GLOBAL, "tune.pool-low-fd-ratio", cfg_parse_pool_fd_ratio },
5376 { 0, NULL, NULL }
5377}};
5378
5379INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
5380
Baptiste Assmanna68ca962015-04-14 01:15:08 +02005381/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02005382 * Local variables:
5383 * c-indent-level: 8
5384 * c-basic-offset: 8
5385 * End:
5386 */