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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 Tarreau272adea2014-03-31 10:39:59 +020014#include <ctype.h>
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +020015#include <errno.h>
Willy Tarreau272adea2014-03-31 10:39:59 +020016
Olivier Houchard4e694042017-03-14 20:01:29 +010017#include <import/xxhash.h>
18
Willy Tarreau272adea2014-03-31 10:39:59 +020019#include <common/cfgparse.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020020#include <common/config.h>
Willy Tarreaudff55432012-10-10 17:51:05 +020021#include <common/errors.h>
Willy Tarreau0108d902018-11-25 19:14:37 +010022#include <common/initcall.h>
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +010023#include <common/namespace.h>
Krzysztof Oledzki85130942007-10-22 16:21:10 +020024#include <common/time.h>
25
William Lallemand222baf22016-11-19 02:00:33 +010026#include <types/applet.h>
27#include <types/cli.h>
Frédéric Lécaille7da71292019-05-20 09:47:07 +020028#include <types/dict.h>
Willy Tarreau272adea2014-03-31 10:39:59 +020029#include <types/global.h>
Willy Tarreau21b069d2016-11-23 17:15:08 +010030#include <types/cli.h>
Baptiste Assmanna68ca962015-04-14 01:15:08 +020031#include <types/dns.h>
William Lallemand222baf22016-11-19 02:00:33 +010032#include <types/stats.h>
Willy Tarreau272adea2014-03-31 10:39:59 +020033
William Lallemand222baf22016-11-19 02:00:33 +010034#include <proto/applet.h>
35#include <proto/cli.h>
Simon Hormanb1900d52015-01-30 11:22:54 +090036#include <proto/checks.h>
Christopher Faulet8ed0a3e2018-04-10 14:45:45 +020037#include <proto/connection.h>
Willy Tarreau272adea2014-03-31 10:39:59 +020038#include <proto/port_range.h>
39#include <proto/protocol.h>
Willy Tarreau4aac7db2014-05-16 11:48:10 +020040#include <proto/queue.h>
Frédéric Lécaille9a146de2017-03-20 14:54:41 +010041#include <proto/sample.h>
Willy Tarreauec6c5df2008-07-15 00:22:45 +020042#include <proto/server.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020043#include <proto/stream.h>
William Lallemand222baf22016-11-19 02:00:33 +010044#include <proto/stream_interface.h>
45#include <proto/stats.h>
Willy Tarreau4aac7db2014-05-16 11:48:10 +020046#include <proto/task.h>
Baptiste Assmanna68ca962015-04-14 01:15:08 +020047#include <proto/dns.h>
David Carlier6f182082017-04-03 21:58:04 +010048#include <netinet/tcp.h>
Willy Tarreau4aac7db2014-05-16 11:48:10 +020049
Baptiste Assmannda29fe22019-06-13 13:24:29 +020050#include <ebsttree.h>
51
Willy Tarreau3ff577e2018-08-02 11:48:52 +020052static void srv_update_status(struct server *s);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +020053static void srv_update_state(struct server *srv, int version, char **params);
Baptiste Assmann83cbaa52016-11-02 15:34:05 +010054static int srv_apply_lastaddr(struct server *srv, int *err_code);
Olivier Houchardd16bfe62017-10-31 15:21:19 +010055static int srv_set_fqdn(struct server *srv, const char *fqdn, int dns_locked);
Baptiste Assmannda29fe22019-06-13 13:24:29 +020056static void srv_state_parse_line(char *buf, const int version, char **params, char **srv_params);
57static int srv_state_get_version(FILE *f);
Willy Tarreaubaaee002006-06-26 02:48:02 +020058
Willy Tarreau21faa912012-10-10 08:27:36 +020059/* List head of all known server keywords */
60static struct srv_kw_list srv_keywords = {
61 .list = LIST_HEAD_INIT(srv_keywords.list)
62};
Krzysztof Oledzki85130942007-10-22 16:21:10 +020063
Olivier Houchard9ea5d362019-02-14 18:29:09 +010064__decl_hathreads(HA_SPINLOCK_T idle_conn_srv_lock);
65struct eb_root idle_conn_srv = EB_ROOT;
66struct task *idle_conn_task = NULL;
67struct task *idle_conn_cleanup[MAX_THREADS] = { NULL };
Olivier Houchard859dc802019-08-08 15:47:21 +020068struct mt_list toremove_connections[MAX_THREADS];
Olivier Houchard4be71902019-07-11 15:49:00 +020069__decl_hathreads(HA_SPINLOCK_T toremove_lock[MAX_THREADS]);
Olivier Houchard9ea5d362019-02-14 18:29:09 +010070
Frédéric Lécaille7da71292019-05-20 09:47:07 +020071/* The server names dictionary */
72struct dict server_name_dict = {
73 .name = "server names",
74 .values = EB_ROOT_UNIQUE,
75};
76
Baptiste Assmannda29fe22019-06-13 13:24:29 +020077/* tree where global state_file is loaded */
Willy Tarreaufd1aa012019-12-20 17:23:40 +010078struct eb_root state_file = EB_ROOT_UNIQUE;
Baptiste Assmannda29fe22019-06-13 13:24:29 +020079
Simon Hormana3608442013-11-01 16:46:15 +090080int srv_downtime(const struct server *s)
Willy Tarreau21faa912012-10-10 08:27:36 +020081{
Emeric Brun52a91d32017-08-31 14:41:55 +020082 if ((s->cur_state != SRV_ST_STOPPED) && s->last_change < now.tv_sec) // ignore negative time
Krzysztof Oledzki85130942007-10-22 16:21:10 +020083 return s->down_time;
84
85 return now.tv_sec - s->last_change + s->down_time;
86}
Willy Tarreaubaaee002006-06-26 02:48:02 +020087
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -050088int srv_lastsession(const struct server *s)
89{
90 if (s->counters.last_sess)
91 return now.tv_sec - s->counters.last_sess;
92
93 return -1;
94}
95
Simon Horman4a741432013-02-23 15:35:38 +090096int srv_getinter(const struct check *check)
Willy Tarreau21faa912012-10-10 08:27:36 +020097{
Simon Horman4a741432013-02-23 15:35:38 +090098 const struct server *s = check->server;
99
Willy Tarreauff5ae352013-12-11 20:36:34 +0100100 if ((check->state & CHK_ST_CONFIGURED) && (check->health == check->rise + check->fall - 1))
Simon Horman4a741432013-02-23 15:35:38 +0900101 return check->inter;
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100102
Emeric Brun52a91d32017-08-31 14:41:55 +0200103 if ((s->next_state == SRV_ST_STOPPED) && check->health == 0)
Simon Horman4a741432013-02-23 15:35:38 +0900104 return (check->downinter)?(check->downinter):(check->inter);
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100105
Simon Horman4a741432013-02-23 15:35:38 +0900106 return (check->fastinter)?(check->fastinter):(check->inter);
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100107}
108
Olivier Houcharde9bad0a2018-01-17 17:39:34 +0100109/*
110 * Check that we did not get a hash collision.
111 * Unlikely, but it can happen.
112 */
113static inline void srv_check_for_dup_dyncookie(struct server *s)
Olivier Houchard4e694042017-03-14 20:01:29 +0100114{
115 struct proxy *p = s->proxy;
116 struct server *tmpserv;
Olivier Houcharde9bad0a2018-01-17 17:39:34 +0100117
118 for (tmpserv = p->srv; tmpserv != NULL;
119 tmpserv = tmpserv->next) {
120 if (tmpserv == s)
121 continue;
122 if (tmpserv->next_admin & SRV_ADMF_FMAINT)
123 continue;
124 if (tmpserv->cookie &&
125 strcmp(tmpserv->cookie, s->cookie) == 0) {
126 ha_warning("We generated two equal cookies for two different servers.\n"
127 "Please change the secret key for '%s'.\n",
128 s->proxy->id);
129 }
130 }
131
132}
133
Willy Tarreau46b7f532018-08-21 11:54:26 +0200134/*
Willy Tarreau5e83d992019-07-30 11:59:34 +0200135 * Must be called with the server lock held, and will grab the proxy lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +0200136 */
Olivier Houcharde9bad0a2018-01-17 17:39:34 +0100137void srv_set_dyncookie(struct server *s)
138{
139 struct proxy *p = s->proxy;
Olivier Houchard4e694042017-03-14 20:01:29 +0100140 char *tmpbuf;
141 unsigned long long hash_value;
Olivier Houchard2cb49eb2017-03-15 15:11:06 +0100142 size_t key_len;
Olivier Houchard4e694042017-03-14 20:01:29 +0100143 size_t buffer_len;
144 int addr_len;
145 int port;
146
Willy Tarreau5e83d992019-07-30 11:59:34 +0200147 HA_SPIN_LOCK(PROXY_LOCK, &p->lock);
148
Olivier Houchard4e694042017-03-14 20:01:29 +0100149 if ((s->flags & SRV_F_COOKIESET) ||
150 !(s->proxy->ck_opts & PR_CK_DYNAMIC) ||
151 s->proxy->dyncookie_key == NULL)
Willy Tarreau5e83d992019-07-30 11:59:34 +0200152 goto out;
Olivier Houchard2cb49eb2017-03-15 15:11:06 +0100153 key_len = strlen(p->dyncookie_key);
Olivier Houchard4e694042017-03-14 20:01:29 +0100154
155 if (s->addr.ss_family != AF_INET &&
156 s->addr.ss_family != AF_INET6)
Willy Tarreau5e83d992019-07-30 11:59:34 +0200157 goto out;
Olivier Houchard4e694042017-03-14 20:01:29 +0100158 /*
159 * Buffer to calculate the cookie value.
160 * The buffer contains the secret key + the server IP address
161 * + the TCP port.
162 */
163 addr_len = (s->addr.ss_family == AF_INET) ? 4 : 16;
164 /*
165 * The TCP port should use only 2 bytes, but is stored in
166 * an unsigned int in struct server, so let's use 4, to be
167 * on the safe side.
168 */
169 buffer_len = key_len + addr_len + 4;
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200170 tmpbuf = trash.area;
Olivier Houchard4e694042017-03-14 20:01:29 +0100171 memcpy(tmpbuf, p->dyncookie_key, key_len);
172 memcpy(&(tmpbuf[key_len]),
173 s->addr.ss_family == AF_INET ?
174 (void *)&((struct sockaddr_in *)&s->addr)->sin_addr.s_addr :
175 (void *)&(((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr),
176 addr_len);
177 /*
178 * Make sure it's the same across all the load balancers,
179 * no matter their endianness.
180 */
181 port = htonl(s->svc_port);
182 memcpy(&tmpbuf[key_len + addr_len], &port, 4);
183 hash_value = XXH64(tmpbuf, buffer_len, 0);
184 memprintf(&s->cookie, "%016llx", hash_value);
185 if (!s->cookie)
Willy Tarreau5e83d992019-07-30 11:59:34 +0200186 goto out;
Olivier Houchard4e694042017-03-14 20:01:29 +0100187 s->cklen = 16;
Olivier Houcharde9bad0a2018-01-17 17:39:34 +0100188
189 /* Don't bother checking if the dyncookie is duplicated if
190 * the server is marked as "disabled", maybe it doesn't have
191 * its real IP yet, but just a place holder.
Olivier Houchard4e694042017-03-14 20:01:29 +0100192 */
Olivier Houcharde9bad0a2018-01-17 17:39:34 +0100193 if (!(s->next_admin & SRV_ADMF_FMAINT))
194 srv_check_for_dup_dyncookie(s);
Willy Tarreau5e83d992019-07-30 11:59:34 +0200195 out:
196 HA_SPIN_UNLOCK(PROXY_LOCK, &p->lock);
Olivier Houchard4e694042017-03-14 20:01:29 +0100197}
198
Willy Tarreau21faa912012-10-10 08:27:36 +0200199/*
200 * Registers the server keyword list <kwl> as a list of valid keywords for next
201 * parsing sessions.
202 */
203void srv_register_keywords(struct srv_kw_list *kwl)
204{
205 LIST_ADDQ(&srv_keywords.list, &kwl->list);
206}
207
208/* Return a pointer to the server keyword <kw>, or NULL if not found. If the
209 * keyword is found with a NULL ->parse() function, then an attempt is made to
210 * find one with a valid ->parse() function. This way it is possible to declare
211 * platform-dependant, known keywords as NULL, then only declare them as valid
212 * if some options are met. Note that if the requested keyword contains an
213 * opening parenthesis, everything from this point is ignored.
214 */
215struct srv_kw *srv_find_kw(const char *kw)
216{
217 int index;
218 const char *kwend;
219 struct srv_kw_list *kwl;
220 struct srv_kw *ret = NULL;
221
222 kwend = strchr(kw, '(');
223 if (!kwend)
224 kwend = kw + strlen(kw);
225
226 list_for_each_entry(kwl, &srv_keywords.list, list) {
227 for (index = 0; kwl->kw[index].kw != NULL; index++) {
228 if ((strncmp(kwl->kw[index].kw, kw, kwend - kw) == 0) &&
229 kwl->kw[index].kw[kwend-kw] == 0) {
230 if (kwl->kw[index].parse)
231 return &kwl->kw[index]; /* found it !*/
232 else
233 ret = &kwl->kw[index]; /* may be OK */
234 }
235 }
236 }
237 return ret;
238}
239
240/* Dumps all registered "server" keywords to the <out> string pointer. The
241 * unsupported keywords are only dumped if their supported form was not
242 * found.
243 */
244void srv_dump_kws(char **out)
245{
246 struct srv_kw_list *kwl;
247 int index;
248
249 *out = NULL;
250 list_for_each_entry(kwl, &srv_keywords.list, list) {
251 for (index = 0; kwl->kw[index].kw != NULL; index++) {
252 if (kwl->kw[index].parse ||
253 srv_find_kw(kwl->kw[index].kw) == &kwl->kw[index]) {
254 memprintf(out, "%s[%4s] %s%s%s%s\n", *out ? *out : "",
255 kwl->scope,
256 kwl->kw[index].kw,
257 kwl->kw[index].skip ? " <arg>" : "",
258 kwl->kw[index].default_ok ? " [dflt_ok]" : "",
259 kwl->kw[index].parse ? "" : " (not supported)");
260 }
261 }
262 }
263}
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100264
Frédéric Lécaille6e5e0d82017-03-20 16:30:18 +0100265/* Parse the "addr" server keyword */
266static int srv_parse_addr(char **args, int *cur_arg,
267 struct proxy *curproxy, struct server *newsrv, char **err)
268{
269 char *errmsg, *arg;
270 struct sockaddr_storage *sk;
271 int port1, port2;
272 struct protocol *proto;
273
274 errmsg = NULL;
275 arg = args[*cur_arg + 1];
276
277 if (!*arg) {
278 memprintf(err, "'%s' expects <ipv4|ipv6> as argument.\n", args[*cur_arg]);
279 goto err;
280 }
281
282 sk = str2sa_range(arg, NULL, &port1, &port2, &errmsg, NULL, NULL, 1);
283 if (!sk) {
284 memprintf(err, "'%s' : %s", args[*cur_arg], errmsg);
285 goto err;
286 }
287
288 proto = protocol_by_family(sk->ss_family);
289 if (!proto || !proto->connect) {
290 memprintf(err, "'%s %s' : connect() not supported for this address family.\n",
291 args[*cur_arg], arg);
292 goto err;
293 }
294
295 if (port1 != port2) {
296 memprintf(err, "'%s' : port ranges and offsets are not allowed in '%s'\n",
297 args[*cur_arg], arg);
298 goto err;
299 }
300
301 newsrv->check.addr = newsrv->agent.addr = *sk;
302 newsrv->flags |= SRV_F_CHECKADDR;
303 newsrv->flags |= SRV_F_AGENTADDR;
304
305 return 0;
306
307 err:
308 free(errmsg);
309 return ERR_ALERT | ERR_FATAL;
310}
311
Frédéric Lécaille6e0843c2017-03-21 16:39:15 +0100312/* Parse the "agent-check" server keyword */
313static int srv_parse_agent_check(char **args, int *cur_arg,
314 struct proxy *curproxy, struct server *newsrv, char **err)
315{
316 newsrv->do_agent = 1;
317 return 0;
318}
319
Frédéric Lécaillef5bf9032017-03-10 11:51:05 +0100320/* Parse the "backup" server keyword */
321static int srv_parse_backup(char **args, int *cur_arg,
322 struct proxy *curproxy, struct server *newsrv, char **err)
323{
324 newsrv->flags |= SRV_F_BACKUP;
325 return 0;
326}
327
Frédéric Lécaille65aa3562017-03-14 11:20:13 +0100328/* Parse the "check" server keyword */
329static int srv_parse_check(char **args, int *cur_arg,
330 struct proxy *curproxy, struct server *newsrv, char **err)
331{
332 newsrv->do_check = 1;
333 return 0;
334}
335
Frédéric Lécaille25df8902017-03-10 14:04:31 +0100336/* Parse the "check-send-proxy" server keyword */
337static int srv_parse_check_send_proxy(char **args, int *cur_arg,
338 struct proxy *curproxy, struct server *newsrv, char **err)
339{
340 newsrv->check.send_proxy = 1;
341 return 0;
342}
343
Alexander Liu2a54bb72019-05-22 19:44:48 +0800344/* Parse the "check-via-socks4" server keyword */
345static int srv_parse_check_via_socks4(char **args, int *cur_arg,
346 struct proxy *curproxy, struct server *newsrv, char **err)
347{
348 newsrv->check.via_socks4 = 1;
349 return 0;
350}
351
Frédéric Lécaille9d1b95b2017-03-15 09:13:33 +0100352/* Parse the "cookie" server keyword */
353static int srv_parse_cookie(char **args, int *cur_arg,
354 struct proxy *curproxy, struct server *newsrv, char **err)
355{
356 char *arg;
357
358 arg = args[*cur_arg + 1];
359 if (!*arg) {
360 memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]);
361 return ERR_ALERT | ERR_FATAL;
362 }
363
364 free(newsrv->cookie);
365 newsrv->cookie = strdup(arg);
366 newsrv->cklen = strlen(arg);
367 newsrv->flags |= SRV_F_COOKIESET;
368 return 0;
369}
370
Frédéric Lécaille2a0d0612017-03-21 11:53:54 +0100371/* Parse the "disabled" server keyword */
372static int srv_parse_disabled(char **args, int *cur_arg,
373 struct proxy *curproxy, struct server *newsrv, char **err)
374{
Emeric Brun52a91d32017-08-31 14:41:55 +0200375 newsrv->next_admin |= SRV_ADMF_CMAINT | SRV_ADMF_FMAINT;
376 newsrv->next_state = SRV_ST_STOPPED;
Frédéric Lécaille2a0d0612017-03-21 11:53:54 +0100377 newsrv->check.state |= CHK_ST_PAUSED;
378 newsrv->check.health = 0;
379 return 0;
380}
381
382/* Parse the "enabled" server keyword */
383static int srv_parse_enabled(char **args, int *cur_arg,
384 struct proxy *curproxy, struct server *newsrv, char **err)
385{
Emeric Brun52a91d32017-08-31 14:41:55 +0200386 newsrv->next_admin &= ~SRV_ADMF_CMAINT & ~SRV_ADMF_FMAINT;
387 newsrv->next_state = SRV_ST_RUNNING;
Frédéric Lécaille2a0d0612017-03-21 11:53:54 +0100388 newsrv->check.state &= ~CHK_ST_PAUSED;
389 newsrv->check.health = newsrv->check.rise;
390 return 0;
391}
392
Willy Tarreau9c538e02019-01-23 10:21:49 +0100393static int srv_parse_max_reuse(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err)
394{
395 char *arg;
396
397 arg = args[*cur_arg + 1];
398 if (!*arg) {
399 memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]);
400 return ERR_ALERT | ERR_FATAL;
401 }
402 newsrv->max_reuse = atoi(arg);
403
404 return 0;
405}
406
Olivier Houchardb7b3faa2018-12-14 18:15:36 +0100407static 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 +0100408{
409 const char *res;
410 char *arg;
411 unsigned int time;
412
413 arg = args[*cur_arg + 1];
414 if (!*arg) {
415 memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]);
416 return ERR_ALERT | ERR_FATAL;
417 }
418 res = parse_time_err(arg, &time, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +0200419 if (res == PARSE_TIME_OVER) {
420 memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
421 args[*cur_arg+1], args[*cur_arg]);
422 return ERR_ALERT | ERR_FATAL;
423 }
424 else if (res == PARSE_TIME_UNDER) {
425 memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
426 args[*cur_arg+1], args[*cur_arg]);
427 return ERR_ALERT | ERR_FATAL;
428 }
429 else if (res) {
Olivier Houchard0c18a6f2018-12-02 14:11:41 +0100430 memprintf(err, "unexpected character '%c' in argument to <%s>.\n",
431 *res, args[*cur_arg]);
432 return ERR_ALERT | ERR_FATAL;
433 }
Olivier Houchardb7b3faa2018-12-14 18:15:36 +0100434 newsrv->pool_purge_delay = time;
Olivier Houchard0c18a6f2018-12-02 14:11:41 +0100435
436 return 0;
437}
438
Olivier Houchard006e3102018-12-10 18:30:32 +0100439static int srv_parse_pool_max_conn(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err)
440{
441 char *arg;
442
443 arg = args[*cur_arg + 1];
444 if (!*arg) {
445 memprintf(err, "'%s' expects <value> as argument.\n", args[*cur_arg]);
446 return ERR_ALERT | ERR_FATAL;
447 }
Willy Tarreaucb923d52019-01-23 10:39:27 +0100448
Olivier Houchard006e3102018-12-10 18:30:32 +0100449 newsrv->max_idle_conns = atoi(arg);
Willy Tarreaucb923d52019-01-23 10:39:27 +0100450 if ((int)newsrv->max_idle_conns < -1) {
451 memprintf(err, "'%s' must be >= -1", args[*cur_arg]);
452 return ERR_ALERT | ERR_FATAL;
453 }
Olivier Houchard006e3102018-12-10 18:30:32 +0100454
455 return 0;
456}
457
Willy Tarreaudff55432012-10-10 17:51:05 +0200458/* parse the "id" server keyword */
459static int srv_parse_id(char **args, int *cur_arg, struct proxy *curproxy, struct server *newsrv, char **err)
460{
461 struct eb32_node *node;
462
463 if (!*args[*cur_arg + 1]) {
464 memprintf(err, "'%s' : expects an integer argument", args[*cur_arg]);
465 return ERR_ALERT | ERR_FATAL;
466 }
467
468 newsrv->puid = atol(args[*cur_arg + 1]);
469 newsrv->conf.id.key = newsrv->puid;
470
471 if (newsrv->puid <= 0) {
472 memprintf(err, "'%s' : custom id has to be > 0", args[*cur_arg]);
473 return ERR_ALERT | ERR_FATAL;
474 }
475
476 node = eb32_lookup(&curproxy->conf.used_server_id, newsrv->puid);
477 if (node) {
478 struct server *target = container_of(node, struct server, conf.id);
479 memprintf(err, "'%s' : custom id %d already used at %s:%d ('server %s')",
480 args[*cur_arg], newsrv->puid, target->conf.file, target->conf.line,
481 target->id);
482 return ERR_ALERT | ERR_FATAL;
483 }
484
485 eb32_insert(&curproxy->conf.used_server_id, &newsrv->conf.id);
Baptiste Assmann7cc419a2015-07-07 22:02:20 +0200486 newsrv->flags |= SRV_F_FORCED_ID;
Willy Tarreaudff55432012-10-10 17:51:05 +0200487 return 0;
488}
489
Frédéric Lécaille22f41a22017-03-16 17:17:36 +0100490/* Parse the "namespace" server keyword */
491static int srv_parse_namespace(char **args, int *cur_arg,
492 struct proxy *curproxy, struct server *newsrv, char **err)
493{
Willy Tarreaue5733232019-05-22 19:24:06 +0200494#ifdef USE_NS
Frédéric Lécaille22f41a22017-03-16 17:17:36 +0100495 char *arg;
496
497 arg = args[*cur_arg + 1];
498 if (!*arg) {
499 memprintf(err, "'%s' : expects <name> as argument", args[*cur_arg]);
500 return ERR_ALERT | ERR_FATAL;
501 }
502
503 if (!strcmp(arg, "*")) {
504 /* Use the namespace associated with the connection (if present). */
505 newsrv->flags |= SRV_F_USE_NS_FROM_PP;
506 return 0;
507 }
508
509 /*
510 * As this parser may be called several times for the same 'default-server'
511 * object, or for a new 'server' instance deriving from a 'default-server'
512 * one with SRV_F_USE_NS_FROM_PP flag enabled, let's reset it.
513 */
514 newsrv->flags &= ~SRV_F_USE_NS_FROM_PP;
515
516 newsrv->netns = netns_store_lookup(arg, strlen(arg));
517 if (!newsrv->netns)
518 newsrv->netns = netns_store_insert(arg);
519
520 if (!newsrv->netns) {
521 memprintf(err, "Cannot open namespace '%s'", arg);
522 return ERR_ALERT | ERR_FATAL;
523 }
524
525 return 0;
526#else
527 memprintf(err, "'%s': '%s' option not implemented", args[0], args[*cur_arg]);
528 return ERR_ALERT | ERR_FATAL;
529#endif
530}
531
Frédéric Lécaille6e0843c2017-03-21 16:39:15 +0100532/* Parse the "no-agent-check" server keyword */
533static int srv_parse_no_agent_check(char **args, int *cur_arg,
534 struct proxy *curproxy, struct server *newsrv, char **err)
535{
536 free_check(&newsrv->agent);
537 newsrv->agent.inter = 0;
538 newsrv->agent.port = 0;
539 newsrv->agent.state &= ~CHK_ST_CONFIGURED & ~CHK_ST_ENABLED & ~CHK_ST_AGENT;
540 newsrv->do_agent = 0;
541 return 0;
542}
543
Frédéric Lécaillef5bf9032017-03-10 11:51:05 +0100544/* Parse the "no-backup" server keyword */
545static int srv_parse_no_backup(char **args, int *cur_arg,
546 struct proxy *curproxy, struct server *newsrv, char **err)
547{
548 newsrv->flags &= ~SRV_F_BACKUP;
549 return 0;
550}
551
Frédéric Lécaille65aa3562017-03-14 11:20:13 +0100552/* Parse the "no-check" server keyword */
553static int srv_parse_no_check(char **args, int *cur_arg,
554 struct proxy *curproxy, struct server *newsrv, char **err)
555{
556 free_check(&newsrv->check);
557 newsrv->check.state &= ~CHK_ST_CONFIGURED & ~CHK_ST_ENABLED;
558 newsrv->do_check = 0;
559 return 0;
560}
561
Frédéric Lécaille25df8902017-03-10 14:04:31 +0100562/* Parse the "no-check-send-proxy" server keyword */
563static int srv_parse_no_check_send_proxy(char **args, int *cur_arg,
564 struct proxy *curproxy, struct server *newsrv, char **err)
565{
566 newsrv->check.send_proxy = 0;
567 return 0;
568}
569
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100570/* Disable server PROXY protocol flags. */
Willy Tarreau0e492e22019-04-15 21:25:03 +0200571static inline int srv_disable_pp_flags(struct server *srv, unsigned int flags)
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100572{
573 srv->pp_opts &= ~flags;
574 return 0;
575}
576
577/* Parse the "no-send-proxy" server keyword */
578static int srv_parse_no_send_proxy(char **args, int *cur_arg,
579 struct proxy *curproxy, struct server *newsrv, char **err)
580{
581 return srv_disable_pp_flags(newsrv, SRV_PP_V1);
582}
583
584/* Parse the "no-send-proxy-v2" server keyword */
585static int srv_parse_no_send_proxy_v2(char **args, int *cur_arg,
586 struct proxy *curproxy, struct server *newsrv, char **err)
587{
588 return srv_disable_pp_flags(newsrv, SRV_PP_V2);
589}
590
Frédéric Lécaille1b9423d2019-07-04 14:19:06 +0200591/* Parse the "no-tfo" server keyword */
592static int srv_parse_no_tfo(char **args, int *cur_arg,
593 struct proxy *curproxy, struct server *newsrv, char **err)
594{
595 newsrv->flags &= ~SRV_F_FASTOPEN;
596 return 0;
597}
598
Frédéric Lécaillef9bc1d62017-03-10 15:50:49 +0100599/* Parse the "non-stick" server keyword */
600static int srv_parse_non_stick(char **args, int *cur_arg,
601 struct proxy *curproxy, struct server *newsrv, char **err)
602{
603 newsrv->flags |= SRV_F_NON_STICK;
604 return 0;
605}
606
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100607/* Enable server PROXY protocol flags. */
Willy Tarreau0e492e22019-04-15 21:25:03 +0200608static inline int srv_enable_pp_flags(struct server *srv, unsigned int flags)
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100609{
610 srv->pp_opts |= flags;
611 return 0;
612}
Christopher Faulet8ed0a3e2018-04-10 14:45:45 +0200613/* parse the "proto" server keyword */
614static int srv_parse_proto(char **args, int *cur_arg,
615 struct proxy *px, struct server *newsrv, char **err)
616{
617 struct ist proto;
618
619 if (!*args[*cur_arg + 1]) {
620 memprintf(err, "'%s' : missing value", args[*cur_arg]);
621 return ERR_ALERT | ERR_FATAL;
622 }
623 proto = ist2(args[*cur_arg + 1], strlen(args[*cur_arg + 1]));
624 newsrv->mux_proto = get_mux_proto(proto);
625 if (!newsrv->mux_proto) {
626 memprintf(err, "'%s' : unknown MUX protocol '%s'", args[*cur_arg], args[*cur_arg+1]);
627 return ERR_ALERT | ERR_FATAL;
628 }
Christopher Faulet8ed0a3e2018-04-10 14:45:45 +0200629 return 0;
630}
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100631
Emmanuel Hocdetf643b802018-02-01 15:20:32 +0100632/* parse the "proxy-v2-options" */
633static int srv_parse_proxy_v2_options(char **args, int *cur_arg,
634 struct proxy *px, struct server *newsrv, char **err)
635{
636 char *p, *n;
637 for (p = args[*cur_arg+1]; p; p = n) {
638 n = strchr(p, ',');
639 if (n)
640 *n++ = '\0';
641 if (!strcmp(p, "ssl")) {
642 newsrv->pp_opts |= SRV_PP_V2_SSL;
643 } else if (!strcmp(p, "cert-cn")) {
644 newsrv->pp_opts |= SRV_PP_V2_SSL;
645 newsrv->pp_opts |= SRV_PP_V2_SSL_CN;
Emmanuel Hocdetfa8d0f12018-02-01 15:53:52 +0100646 } else if (!strcmp(p, "cert-key")) {
647 newsrv->pp_opts |= SRV_PP_V2_SSL;
648 newsrv->pp_opts |= SRV_PP_V2_SSL_KEY_ALG;
649 } else if (!strcmp(p, "cert-sig")) {
650 newsrv->pp_opts |= SRV_PP_V2_SSL;
651 newsrv->pp_opts |= SRV_PP_V2_SSL_SIG_ALG;
652 } else if (!strcmp(p, "ssl-cipher")) {
653 newsrv->pp_opts |= SRV_PP_V2_SSL;
654 newsrv->pp_opts |= SRV_PP_V2_SSL_CIPHER;
Emmanuel Hocdet253c3b72018-02-01 18:29:59 +0100655 } else if (!strcmp(p, "authority")) {
656 newsrv->pp_opts |= SRV_PP_V2_AUTHORITY;
Emmanuel Hocdet4399c752018-02-05 15:26:43 +0100657 } else if (!strcmp(p, "crc32c")) {
658 newsrv->pp_opts |= SRV_PP_V2_CRC32C;
Tim Duesterhuscf6e0c82020-03-13 12:34:24 +0100659 } else if (!strcmp(p, "unique-id")) {
660 newsrv->pp_opts |= SRV_PP_V2_UNIQUE_ID;
Emmanuel Hocdetf643b802018-02-01 15:20:32 +0100661 } else
662 goto fail;
663 }
664 return 0;
665 fail:
666 if (err)
667 memprintf(err, "'%s' : proxy v2 option not implemented", p);
668 return ERR_ALERT | ERR_FATAL;
669}
670
Frédéric Lécaille547356e2017-03-15 08:55:39 +0100671/* Parse the "observe" server keyword */
672static int srv_parse_observe(char **args, int *cur_arg,
673 struct proxy *curproxy, struct server *newsrv, char **err)
674{
675 char *arg;
676
677 arg = args[*cur_arg + 1];
678 if (!*arg) {
679 memprintf(err, "'%s' expects <mode> as argument.\n", args[*cur_arg]);
680 return ERR_ALERT | ERR_FATAL;
681 }
682
683 if (!strcmp(arg, "none")) {
684 newsrv->observe = HANA_OBS_NONE;
685 }
686 else if (!strcmp(arg, "layer4")) {
687 newsrv->observe = HANA_OBS_LAYER4;
688 }
689 else if (!strcmp(arg, "layer7")) {
690 if (curproxy->mode != PR_MODE_HTTP) {
691 memprintf(err, "'%s' can only be used in http proxies.\n", arg);
692 return ERR_ALERT;
693 }
694 newsrv->observe = HANA_OBS_LAYER7;
695 }
696 else {
697 memprintf(err, "'%s' expects one of 'none', 'layer4', 'layer7' "
698 "but got '%s'\n", args[*cur_arg], arg);
699 return ERR_ALERT | ERR_FATAL;
700 }
701
702 return 0;
703}
704
Frédéric Lécaille16186232017-03-14 16:42:49 +0100705/* Parse the "redir" server keyword */
706static int srv_parse_redir(char **args, int *cur_arg,
707 struct proxy *curproxy, struct server *newsrv, char **err)
708{
709 char *arg;
710
711 arg = args[*cur_arg + 1];
712 if (!*arg) {
713 memprintf(err, "'%s' expects <prefix> as argument.\n", args[*cur_arg]);
714 return ERR_ALERT | ERR_FATAL;
715 }
716
717 free(newsrv->rdr_pfx);
718 newsrv->rdr_pfx = strdup(arg);
719 newsrv->rdr_len = strlen(arg);
720
721 return 0;
722}
723
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100724/* Parse the "send-proxy" server keyword */
725static int srv_parse_send_proxy(char **args, int *cur_arg,
726 struct proxy *curproxy, struct server *newsrv, char **err)
727{
728 return srv_enable_pp_flags(newsrv, SRV_PP_V1);
729}
730
731/* Parse the "send-proxy-v2" server keyword */
732static int srv_parse_send_proxy_v2(char **args, int *cur_arg,
733 struct proxy *curproxy, struct server *newsrv, char **err)
734{
735 return srv_enable_pp_flags(newsrv, SRV_PP_V2);
736}
737
Frédéric Lécailledba97072017-03-17 15:33:50 +0100738
739/* Parse the "source" server keyword */
740static int srv_parse_source(char **args, int *cur_arg,
741 struct proxy *curproxy, struct server *newsrv, char **err)
742{
743 char *errmsg;
744 int port_low, port_high;
745 struct sockaddr_storage *sk;
746 struct protocol *proto;
747
748 errmsg = NULL;
749
750 if (!*args[*cur_arg + 1]) {
751 memprintf(err, "'%s' expects <addr>[:<port>[-<port>]], and optionally '%s' <addr>, "
752 "and '%s' <name> as argument.\n", args[*cur_arg], "usesrc", "interface");
753 goto err;
754 }
755
756 /* 'sk' is statically allocated (no need to be freed). */
757 sk = str2sa_range(args[*cur_arg + 1], NULL, &port_low, &port_high, &errmsg, NULL, NULL, 1);
758 if (!sk) {
759 memprintf(err, "'%s %s' : %s\n", args[*cur_arg], args[*cur_arg + 1], errmsg);
760 goto err;
761 }
762
763 proto = protocol_by_family(sk->ss_family);
764 if (!proto || !proto->connect) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100765 ha_alert("'%s %s' : connect() not supported for this address family.\n",
766 args[*cur_arg], args[*cur_arg + 1]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100767 goto err;
768 }
769
770 newsrv->conn_src.opts |= CO_SRC_BIND;
771 newsrv->conn_src.source_addr = *sk;
772
773 if (port_low != port_high) {
774 int i;
775
776 if (!port_low || !port_high) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100777 ha_alert("'%s' does not support port offsets (found '%s').\n",
778 args[*cur_arg], args[*cur_arg + 1]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100779 goto err;
780 }
781
782 if (port_low <= 0 || port_low > 65535 ||
783 port_high <= 0 || port_high > 65535 ||
784 port_low > port_high) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100785 ha_alert("'%s': invalid source port range %d-%d.\n", args[*cur_arg], port_low, port_high);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100786 goto err;
787 }
788 newsrv->conn_src.sport_range = port_range_alloc_range(port_high - port_low + 1);
789 for (i = 0; i < newsrv->conn_src.sport_range->size; i++)
790 newsrv->conn_src.sport_range->ports[i] = port_low + i;
791 }
792
793 *cur_arg += 2;
794 while (*(args[*cur_arg])) {
795 if (!strcmp(args[*cur_arg], "usesrc")) { /* address to use outside */
796#if defined(CONFIG_HAP_TRANSPARENT)
797 if (!*args[*cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100798 ha_alert("'usesrc' expects <addr>[:<port>], 'client', 'clientip', "
799 "or 'hdr_ip(name,#)' as argument.\n");
Frédéric Lécailledba97072017-03-17 15:33:50 +0100800 goto err;
801 }
802 if (!strcmp(args[*cur_arg + 1], "client")) {
803 newsrv->conn_src.opts &= ~CO_SRC_TPROXY_MASK;
804 newsrv->conn_src.opts |= CO_SRC_TPROXY_CLI;
805 }
806 else if (!strcmp(args[*cur_arg + 1], "clientip")) {
807 newsrv->conn_src.opts &= ~CO_SRC_TPROXY_MASK;
808 newsrv->conn_src.opts |= CO_SRC_TPROXY_CIP;
809 }
810 else if (!strncmp(args[*cur_arg + 1], "hdr_ip(", 7)) {
811 char *name, *end;
812
813 name = args[*cur_arg + 1] + 7;
Willy Tarreau90807112020-02-25 08:16:33 +0100814 while (isspace((unsigned char)*name))
Frédéric Lécailledba97072017-03-17 15:33:50 +0100815 name++;
816
817 end = name;
Willy Tarreau90807112020-02-25 08:16:33 +0100818 while (*end && !isspace((unsigned char)*end) && *end != ',' && *end != ')')
Frédéric Lécailledba97072017-03-17 15:33:50 +0100819 end++;
820
821 newsrv->conn_src.opts &= ~CO_SRC_TPROXY_MASK;
822 newsrv->conn_src.opts |= CO_SRC_TPROXY_DYN;
823 free(newsrv->conn_src.bind_hdr_name);
824 newsrv->conn_src.bind_hdr_name = calloc(1, end - name + 1);
825 newsrv->conn_src.bind_hdr_len = end - name;
826 memcpy(newsrv->conn_src.bind_hdr_name, name, end - name);
827 newsrv->conn_src.bind_hdr_name[end - name] = '\0';
828 newsrv->conn_src.bind_hdr_occ = -1;
829
830 /* now look for an occurrence number */
Willy Tarreau90807112020-02-25 08:16:33 +0100831 while (isspace((unsigned char)*end))
Frédéric Lécailledba97072017-03-17 15:33:50 +0100832 end++;
833 if (*end == ',') {
834 end++;
835 name = end;
836 if (*end == '-')
837 end++;
Willy Tarreau90807112020-02-25 08:16:33 +0100838 while (isdigit((unsigned char)*end))
Frédéric Lécailledba97072017-03-17 15:33:50 +0100839 end++;
840 newsrv->conn_src.bind_hdr_occ = strl2ic(name, end - name);
841 }
842
843 if (newsrv->conn_src.bind_hdr_occ < -MAX_HDR_HISTORY) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100844 ha_alert("usesrc hdr_ip(name,num) does not support negative"
845 " occurrences values smaller than %d.\n", MAX_HDR_HISTORY);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100846 goto err;
847 }
848 }
849 else {
850 struct sockaddr_storage *sk;
851 int port1, port2;
852
853 /* 'sk' is statically allocated (no need to be freed). */
854 sk = str2sa_range(args[*cur_arg + 1], NULL, &port1, &port2, &errmsg, NULL, NULL, 1);
855 if (!sk) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100856 ha_alert("'%s %s' : %s\n", args[*cur_arg], args[*cur_arg + 1], errmsg);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100857 goto err;
858 }
859
860 proto = protocol_by_family(sk->ss_family);
861 if (!proto || !proto->connect) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100862 ha_alert("'%s %s' : connect() not supported for this address family.\n",
863 args[*cur_arg], args[*cur_arg + 1]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100864 goto err;
865 }
866
867 if (port1 != port2) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100868 ha_alert("'%s' : port ranges and offsets are not allowed in '%s'\n",
869 args[*cur_arg], args[*cur_arg + 1]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100870 goto err;
871 }
872 newsrv->conn_src.tproxy_addr = *sk;
873 newsrv->conn_src.opts |= CO_SRC_TPROXY_ADDR;
874 }
875 global.last_checks |= LSTCHK_NETADM;
876 *cur_arg += 2;
877 continue;
878#else /* no TPROXY support */
Christopher Faulet767a84b2017-11-24 16:50:31 +0100879 ha_alert("'usesrc' not allowed here because support for TPROXY was not compiled in.\n");
Frédéric Lécailledba97072017-03-17 15:33:50 +0100880 goto err;
881#endif /* defined(CONFIG_HAP_TRANSPARENT) */
882 } /* "usesrc" */
883
884 if (!strcmp(args[*cur_arg], "interface")) { /* specifically bind to this interface */
885#ifdef SO_BINDTODEVICE
886 if (!*args[*cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100887 ha_alert("'%s' : missing interface name.\n", args[0]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100888 goto err;
889 }
890 free(newsrv->conn_src.iface_name);
891 newsrv->conn_src.iface_name = strdup(args[*cur_arg + 1]);
892 newsrv->conn_src.iface_len = strlen(newsrv->conn_src.iface_name);
893 global.last_checks |= LSTCHK_NETADM;
894#else
Christopher Faulet767a84b2017-11-24 16:50:31 +0100895 ha_alert("'%s' : '%s' option not implemented.\n", args[0], args[*cur_arg]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100896 goto err;
897#endif
898 *cur_arg += 2;
899 continue;
900 }
901 /* this keyword in not an option of "source" */
902 break;
903 } /* while */
904
905 return 0;
906
907 err:
908 free(errmsg);
909 return ERR_ALERT | ERR_FATAL;
910}
911
Frédéric Lécaillef9bc1d62017-03-10 15:50:49 +0100912/* Parse the "stick" server keyword */
913static int srv_parse_stick(char **args, int *cur_arg,
914 struct proxy *curproxy, struct server *newsrv, char **err)
915{
916 newsrv->flags &= ~SRV_F_NON_STICK;
917 return 0;
918}
919
Frédéric Lécaille67e0e612017-03-14 15:21:31 +0100920/* Parse the "track" server keyword */
921static int srv_parse_track(char **args, int *cur_arg,
922 struct proxy *curproxy, struct server *newsrv, char **err)
923{
924 char *arg;
925
926 arg = args[*cur_arg + 1];
927 if (!*arg) {
928 memprintf(err, "'track' expects [<proxy>/]<server> as argument.\n");
929 return ERR_ALERT | ERR_FATAL;
930 }
931
932 free(newsrv->trackit);
933 newsrv->trackit = strdup(arg);
934
935 return 0;
Alexander Liu2a54bb72019-05-22 19:44:48 +0800936}
937
938/* Parse the "socks4" server keyword */
939static int srv_parse_socks4(char **args, int *cur_arg,
940 struct proxy *curproxy, struct server *newsrv, char **err)
941{
942 char *errmsg;
943 int port_low, port_high;
944 struct sockaddr_storage *sk;
945 struct protocol *proto;
946
947 errmsg = NULL;
948
949 if (!*args[*cur_arg + 1]) {
950 memprintf(err, "'%s' expects <addr>:<port> as argument.\n", args[*cur_arg]);
951 goto err;
952 }
953
954 /* 'sk' is statically allocated (no need to be freed). */
955 sk = str2sa_range(args[*cur_arg + 1], NULL, &port_low, &port_high, &errmsg, NULL, NULL, 1);
956 if (!sk) {
957 memprintf(err, "'%s %s' : %s\n", args[*cur_arg], args[*cur_arg + 1], errmsg);
958 goto err;
959 }
960
961 proto = protocol_by_family(sk->ss_family);
962 if (!proto || !proto->connect) {
963 ha_alert("'%s %s' : connect() not supported for this address family.\n", args[*cur_arg], args[*cur_arg + 1]);
964 goto err;
965 }
966
967 newsrv->flags |= SRV_F_SOCKS4_PROXY;
968 newsrv->socks4_addr = *sk;
969
970 if (port_low != port_high) {
971 ha_alert("'%s' does not support port offsets (found '%s').\n", args[*cur_arg], args[*cur_arg + 1]);
972 goto err;
973 }
974
975 if (!port_low) {
976 ha_alert("'%s': invalid port range %d-%d.\n", args[*cur_arg], port_low, port_high);
977 goto err;
978 }
979
980 return 0;
981
982 err:
983 free(errmsg);
984 return ERR_ALERT | ERR_FATAL;
Frédéric Lécaille67e0e612017-03-14 15:21:31 +0100985}
986
Frédéric Lécailledba97072017-03-17 15:33:50 +0100987
Willy Tarreau034c88c2017-01-23 23:36:45 +0100988/* parse the "tfo" server keyword */
989static int srv_parse_tfo(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
990{
991 newsrv->flags |= SRV_F_FASTOPEN;
992 return 0;
993}
994
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200995/* Shutdown all connections of a server. The caller must pass a termination
Willy Tarreaue7dff022015-04-03 01:14:29 +0200996 * code in <why>, which must be one of SF_ERR_* indicating the reason for the
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200997 * shutdown.
Willy Tarreau46b7f532018-08-21 11:54:26 +0200998 *
999 * Must be called with the server lock held.
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001000 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001001void srv_shutdown_streams(struct server *srv, int why)
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001002{
Willy Tarreau87b09662015-04-03 00:22:06 +02001003 struct stream *stream, *stream_bck;
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001004
Willy Tarreau87b09662015-04-03 00:22:06 +02001005 list_for_each_entry_safe(stream, stream_bck, &srv->actconns, by_srv)
1006 if (stream->srv_conn == srv)
1007 stream_shutdown(stream, why);
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001008}
1009
1010/* Shutdown all connections of all backup servers of a proxy. The caller must
Willy Tarreaue7dff022015-04-03 01:14:29 +02001011 * pass a termination code in <why>, which must be one of SF_ERR_* indicating
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001012 * the reason for the shutdown.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001013 *
1014 * Must be called with the server lock held.
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001015 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001016void srv_shutdown_backup_streams(struct proxy *px, int why)
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001017{
1018 struct server *srv;
1019
1020 for (srv = px->srv; srv != NULL; srv = srv->next)
1021 if (srv->flags & SRV_F_BACKUP)
Willy Tarreau87b09662015-04-03 00:22:06 +02001022 srv_shutdown_streams(srv, why);
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001023}
1024
Willy Tarreaubda92272014-05-20 21:55:30 +02001025/* Appends some information to a message string related to a server going UP or
1026 * DOWN. If both <forced> and <reason> are null and the server tracks another
1027 * one, a "via" information will be provided to know where the status came from.
Emeric Brun5a133512017-10-19 14:42:30 +02001028 * If <check> is non-null, an entire string describing the check result will be
1029 * appended after a comma and a space (eg: to report some information from the
1030 * check that changed the state). In the other case, the string will be built
1031 * using the check results stored into the struct server if present.
1032 * If <xferred> is non-negative, some information about requeued sessions are
Willy Tarreaubda92272014-05-20 21:55:30 +02001033 * provided.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001034 *
1035 * Must be called with the server lock held.
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001036 */
Willy Tarreau83061a82018-07-13 11:56:34 +02001037void srv_append_status(struct buffer *msg, struct server *s,
1038 struct check *check, int xferred, int forced)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001039{
Emeric Brun5a133512017-10-19 14:42:30 +02001040 short status = s->op_st_chg.status;
1041 short code = s->op_st_chg.code;
1042 long duration = s->op_st_chg.duration;
1043 char *desc = s->op_st_chg.reason;
1044
1045 if (check) {
1046 status = check->status;
1047 code = check->code;
1048 duration = check->duration;
1049 desc = check->desc;
1050 }
1051
1052 if (status != -1) {
1053 chunk_appendf(msg, ", reason: %s", get_check_status_description(status));
1054
1055 if (status >= HCHK_STATUS_L57DATA)
1056 chunk_appendf(msg, ", code: %d", code);
1057
1058 if (desc && *desc) {
Willy Tarreau83061a82018-07-13 11:56:34 +02001059 struct buffer src;
Emeric Brun5a133512017-10-19 14:42:30 +02001060
1061 chunk_appendf(msg, ", info: \"");
1062
1063 chunk_initlen(&src, desc, 0, strlen(desc));
1064 chunk_asciiencode(msg, &src, '"');
1065
1066 chunk_appendf(msg, "\"");
1067 }
1068
1069 if (duration >= 0)
1070 chunk_appendf(msg, ", check duration: %ldms", duration);
1071 }
1072 else if (desc && *desc) {
1073 chunk_appendf(msg, ", %s", desc);
1074 }
1075 else if (!forced && s->track) {
Willy Tarreaubda92272014-05-20 21:55:30 +02001076 chunk_appendf(msg, " via %s/%s", s->track->proxy->id, s->track->id);
Emeric Brun5a133512017-10-19 14:42:30 +02001077 }
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001078
1079 if (xferred >= 0) {
Emeric Brun52a91d32017-08-31 14:41:55 +02001080 if (s->next_state == SRV_ST_STOPPED)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001081 chunk_appendf(msg, ". %d active and %d backup servers left.%s"
1082 " %d sessions active, %d requeued, %d remaining in queue",
1083 s->proxy->srv_act, s->proxy->srv_bck,
1084 (s->proxy->srv_bck && !s->proxy->srv_act) ? " Running on backup." : "",
1085 s->cur_sess, xferred, s->nbpend);
1086 else
1087 chunk_appendf(msg, ". %d active and %d backup servers online.%s"
1088 " %d sessions requeued, %d total in queue",
1089 s->proxy->srv_act, s->proxy->srv_bck,
1090 (s->proxy->srv_bck && !s->proxy->srv_act) ? " Running on backup." : "",
1091 xferred, s->nbpend);
1092 }
1093}
1094
Emeric Brun5a133512017-10-19 14:42:30 +02001095/* Marks server <s> down, regardless of its checks' statuses. The server is
1096 * registered in a list to postpone the counting of the remaining servers on
1097 * the proxy and transfers queued streams whenever possible to other servers at
1098 * a sync point. Maintenance servers are ignored. It stores the <reason> if
1099 * non-null as the reason for going down or the available data from the check
1100 * struct to recompute this reason later.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001101 *
1102 * Must be called with the server lock held.
Willy Tarreaue7d1ef12014-05-20 22:25:12 +02001103 */
Emeric Brun5a133512017-10-19 14:42:30 +02001104void srv_set_stopped(struct server *s, const char *reason, struct check *check)
Willy Tarreaue7d1ef12014-05-20 22:25:12 +02001105{
1106 struct server *srv;
Willy Tarreaue7d1ef12014-05-20 22:25:12 +02001107
Emeric Brun64cc49c2017-10-03 14:46:45 +02001108 if ((s->cur_admin & SRV_ADMF_MAINT) || s->next_state == SRV_ST_STOPPED)
Willy Tarreaue7d1ef12014-05-20 22:25:12 +02001109 return;
1110
Emeric Brun52a91d32017-08-31 14:41:55 +02001111 s->next_state = SRV_ST_STOPPED;
Emeric Brun5a133512017-10-19 14:42:30 +02001112 *s->op_st_chg.reason = 0;
1113 s->op_st_chg.status = -1;
1114 if (reason) {
1115 strlcpy2(s->op_st_chg.reason, reason, sizeof(s->op_st_chg.reason));
1116 }
1117 else if (check) {
Willy Tarreau358847f2017-11-20 21:33:21 +01001118 strlcpy2(s->op_st_chg.reason, check->desc, sizeof(s->op_st_chg.reason));
Emeric Brun5a133512017-10-19 14:42:30 +02001119 s->op_st_chg.code = check->code;
1120 s->op_st_chg.status = check->status;
1121 s->op_st_chg.duration = check->duration;
1122 }
Willy Tarreaue7d1ef12014-05-20 22:25:12 +02001123
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001124 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001125 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001126
Emeric Brun9f0b4582017-10-23 14:39:51 +02001127 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001128 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Emeric Brun5a133512017-10-19 14:42:30 +02001129 srv_set_stopped(srv, NULL, NULL);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001130 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001131 }
Willy Tarreaue7d1ef12014-05-20 22:25:12 +02001132}
1133
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001134/* Marks server <s> up regardless of its checks' statuses and provided it isn't
Emeric Brun5a133512017-10-19 14:42:30 +02001135 * in maintenance. The server is registered in a list to postpone the counting
1136 * of the remaining servers on the proxy and tries to grab requests from the
1137 * proxy at a sync point. Maintenance servers are ignored. It stores the
1138 * <reason> if non-null as the reason for going down or the available data
1139 * from the check struct to recompute this reason later.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001140 *
1141 * Must be called with the server lock held.
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001142 */
Emeric Brun5a133512017-10-19 14:42:30 +02001143void srv_set_running(struct server *s, const char *reason, struct check *check)
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001144{
1145 struct server *srv;
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001146
Emeric Brun64cc49c2017-10-03 14:46:45 +02001147 if (s->cur_admin & SRV_ADMF_MAINT)
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001148 return;
1149
Emeric Brun52a91d32017-08-31 14:41:55 +02001150 if (s->next_state == SRV_ST_STARTING || s->next_state == SRV_ST_RUNNING)
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001151 return;
1152
Emeric Brun52a91d32017-08-31 14:41:55 +02001153 s->next_state = SRV_ST_STARTING;
Emeric Brun5a133512017-10-19 14:42:30 +02001154 *s->op_st_chg.reason = 0;
1155 s->op_st_chg.status = -1;
1156 if (reason) {
1157 strlcpy2(s->op_st_chg.reason, reason, sizeof(s->op_st_chg.reason));
1158 }
1159 else if (check) {
Willy Tarreau358847f2017-11-20 21:33:21 +01001160 strlcpy2(s->op_st_chg.reason, check->desc, sizeof(s->op_st_chg.reason));
Emeric Brun5a133512017-10-19 14:42:30 +02001161 s->op_st_chg.code = check->code;
1162 s->op_st_chg.status = check->status;
1163 s->op_st_chg.duration = check->duration;
1164 }
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001165
Emeric Brun64cc49c2017-10-03 14:46:45 +02001166 if (s->slowstart <= 0)
1167 s->next_state = SRV_ST_RUNNING;
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001168
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001169 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001170 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001171
Emeric Brun9f0b4582017-10-23 14:39:51 +02001172 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001173 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Emeric Brun5a133512017-10-19 14:42:30 +02001174 srv_set_running(srv, NULL, NULL);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001175 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001176 }
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001177}
1178
Willy Tarreau8eb77842014-05-21 13:54:57 +02001179/* Marks server <s> stopping regardless of its checks' statuses and provided it
Emeric Brun5a133512017-10-19 14:42:30 +02001180 * isn't in maintenance. The server is registered in a list to postpone the
1181 * counting of the remaining servers on the proxy and tries to grab requests
1182 * from the proxy. Maintenance servers are ignored. It stores the
1183 * <reason> if non-null as the reason for going down or the available data
1184 * from the check struct to recompute this reason later.
Willy Tarreau8eb77842014-05-21 13:54:57 +02001185 * up. Note that it makes use of the trash to build the log strings, so <reason>
1186 * must not be placed there.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001187 *
1188 * Must be called with the server lock held.
Willy Tarreau8eb77842014-05-21 13:54:57 +02001189 */
Emeric Brun5a133512017-10-19 14:42:30 +02001190void srv_set_stopping(struct server *s, const char *reason, struct check *check)
Willy Tarreau8eb77842014-05-21 13:54:57 +02001191{
1192 struct server *srv;
Willy Tarreau8eb77842014-05-21 13:54:57 +02001193
Emeric Brun64cc49c2017-10-03 14:46:45 +02001194 if (s->cur_admin & SRV_ADMF_MAINT)
Willy Tarreau8eb77842014-05-21 13:54:57 +02001195 return;
1196
Emeric Brun52a91d32017-08-31 14:41:55 +02001197 if (s->next_state == SRV_ST_STOPPING)
Willy Tarreau8eb77842014-05-21 13:54:57 +02001198 return;
1199
Emeric Brun52a91d32017-08-31 14:41:55 +02001200 s->next_state = SRV_ST_STOPPING;
Emeric Brun5a133512017-10-19 14:42:30 +02001201 *s->op_st_chg.reason = 0;
1202 s->op_st_chg.status = -1;
1203 if (reason) {
1204 strlcpy2(s->op_st_chg.reason, reason, sizeof(s->op_st_chg.reason));
1205 }
1206 else if (check) {
Willy Tarreau358847f2017-11-20 21:33:21 +01001207 strlcpy2(s->op_st_chg.reason, check->desc, sizeof(s->op_st_chg.reason));
Emeric Brun5a133512017-10-19 14:42:30 +02001208 s->op_st_chg.code = check->code;
1209 s->op_st_chg.status = check->status;
1210 s->op_st_chg.duration = check->duration;
1211 }
Willy Tarreau8eb77842014-05-21 13:54:57 +02001212
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001213 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001214 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001215
Emeric Brun9f0b4582017-10-23 14:39:51 +02001216 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001217 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Emeric Brun5a133512017-10-19 14:42:30 +02001218 srv_set_stopping(srv, NULL, NULL);
Christopher Faulet8d01fd62018-01-24 21:49:41 +01001219 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001220 }
Willy Tarreau8eb77842014-05-21 13:54:57 +02001221}
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001222
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001223/* Enables admin flag <mode> (among SRV_ADMF_*) on server <s>. This is used to
1224 * enforce either maint mode or drain mode. It is not allowed to set more than
1225 * one flag at once. The equivalent "inherited" flag is propagated to all
1226 * tracking servers. Maintenance mode disables health checks (but not agent
1227 * checks). When either the flag is already set or no flag is passed, nothing
Willy Tarreau8b428482016-11-07 15:53:43 +01001228 * is done. If <cause> is non-null, it will be displayed at the end of the log
1229 * lines to justify the state change.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001230 *
1231 * Must be called with the server lock held.
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001232 */
Willy Tarreau8b428482016-11-07 15:53:43 +01001233void srv_set_admin_flag(struct server *s, enum srv_admin mode, const char *cause)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001234{
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001235 struct server *srv;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001236
1237 if (!mode)
1238 return;
1239
1240 /* stop going down as soon as we meet a server already in the same state */
Emeric Brun52a91d32017-08-31 14:41:55 +02001241 if (s->next_admin & mode)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001242 return;
1243
Emeric Brun52a91d32017-08-31 14:41:55 +02001244 s->next_admin |= mode;
Emeric Brun64cc49c2017-10-03 14:46:45 +02001245 if (cause)
1246 strlcpy2(s->adm_st_chg_cause, cause, sizeof(s->adm_st_chg_cause));
1247
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001248 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001249 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001250
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001251 /* stop going down if the equivalent flag was already present (forced or inherited) */
Emeric Brun52a91d32017-08-31 14:41:55 +02001252 if (((mode & SRV_ADMF_MAINT) && (s->next_admin & ~mode & SRV_ADMF_MAINT)) ||
1253 ((mode & SRV_ADMF_DRAIN) && (s->next_admin & ~mode & SRV_ADMF_DRAIN)))
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001254 return;
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001255
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001256 /* compute the inherited flag to propagate */
1257 if (mode & SRV_ADMF_MAINT)
1258 mode = SRV_ADMF_IMAINT;
1259 else if (mode & SRV_ADMF_DRAIN)
1260 mode = SRV_ADMF_IDRAIN;
1261
Emeric Brun9f0b4582017-10-23 14:39:51 +02001262 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001263 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Willy Tarreau8b428482016-11-07 15:53:43 +01001264 srv_set_admin_flag(srv, mode, cause);
Christopher Faulet8d01fd62018-01-24 21:49:41 +01001265 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001266 }
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001267}
1268
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001269/* Disables admin flag <mode> (among SRV_ADMF_*) on server <s>. This is used to
1270 * stop enforcing either maint mode or drain mode. It is not allowed to set more
1271 * than one flag at once. The equivalent "inherited" flag is propagated to all
1272 * tracking servers. Leaving maintenance mode re-enables health checks. When
1273 * either the flag is already cleared or no flag is passed, nothing is done.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001274 *
1275 * Must be called with the server lock held.
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001276 */
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001277void srv_clr_admin_flag(struct server *s, enum srv_admin mode)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001278{
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001279 struct server *srv;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001280
1281 if (!mode)
1282 return;
1283
1284 /* stop going down as soon as we see the flag is not there anymore */
Emeric Brun52a91d32017-08-31 14:41:55 +02001285 if (!(s->next_admin & mode))
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001286 return;
1287
Emeric Brun52a91d32017-08-31 14:41:55 +02001288 s->next_admin &= ~mode;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001289
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001290 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001291 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001292
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001293 /* stop going down if the equivalent flag is still present (forced or inherited) */
Emeric Brun52a91d32017-08-31 14:41:55 +02001294 if (((mode & SRV_ADMF_MAINT) && (s->next_admin & SRV_ADMF_MAINT)) ||
1295 ((mode & SRV_ADMF_DRAIN) && (s->next_admin & SRV_ADMF_DRAIN)))
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001296 return;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001297
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001298 if (mode & SRV_ADMF_MAINT)
1299 mode = SRV_ADMF_IMAINT;
1300 else if (mode & SRV_ADMF_DRAIN)
1301 mode = SRV_ADMF_IDRAIN;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001302
Emeric Brun9f0b4582017-10-23 14:39:51 +02001303 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001304 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001305 srv_clr_admin_flag(srv, mode);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001306 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001307 }
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001308}
1309
Willy Tarreau757478e2016-11-03 19:22:19 +01001310/* principle: propagate maint and drain to tracking servers. This is useful
1311 * upon startup so that inherited states are correct.
1312 */
1313static void srv_propagate_admin_state(struct server *srv)
1314{
1315 struct server *srv2;
1316
1317 if (!srv->trackers)
1318 return;
1319
1320 for (srv2 = srv->trackers; srv2; srv2 = srv2->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001321 HA_SPIN_LOCK(SERVER_LOCK, &srv2->lock);
Emeric Brun52a91d32017-08-31 14:41:55 +02001322 if (srv->next_admin & (SRV_ADMF_MAINT | SRV_ADMF_CMAINT))
Willy Tarreau8b428482016-11-07 15:53:43 +01001323 srv_set_admin_flag(srv2, SRV_ADMF_IMAINT, NULL);
Willy Tarreau757478e2016-11-03 19:22:19 +01001324
Emeric Brun52a91d32017-08-31 14:41:55 +02001325 if (srv->next_admin & SRV_ADMF_DRAIN)
Willy Tarreau8b428482016-11-07 15:53:43 +01001326 srv_set_admin_flag(srv2, SRV_ADMF_IDRAIN, NULL);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001327 HA_SPIN_UNLOCK(SERVER_LOCK, &srv2->lock);
Willy Tarreau757478e2016-11-03 19:22:19 +01001328 }
1329}
1330
1331/* Compute and propagate the admin states for all servers in proxy <px>.
1332 * Only servers *not* tracking another one are considered, because other
1333 * ones will be handled when the server they track is visited.
1334 */
1335void srv_compute_all_admin_states(struct proxy *px)
1336{
1337 struct server *srv;
1338
1339 for (srv = px->srv; srv; srv = srv->next) {
1340 if (srv->track)
1341 continue;
1342 srv_propagate_admin_state(srv);
1343 }
1344}
1345
Willy Tarreaudff55432012-10-10 17:51:05 +02001346/* Note: must not be declared <const> as its list will be overwritten.
1347 * Please take care of keeping this list alphabetically sorted, doing so helps
1348 * all code contributors.
1349 * Optional keywords are also declared with a NULL ->parse() function so that
1350 * the config parser can report an appropriate error when a known keyword was
1351 * not enabled.
Frédéric Lécailledfacd692017-04-16 17:14:14 +02001352 * Note: -1 as ->skip value means that the number of arguments are variable.
Willy Tarreaudff55432012-10-10 17:51:05 +02001353 */
1354static struct srv_kw_list srv_kws = { "ALL", { }, {
Frédéric Lécaille6e5e0d82017-03-20 16:30:18 +01001355 { "addr", srv_parse_addr, 1, 1 }, /* IP address to send health to or to probe from agent-check */
Frédéric Lécaille6e0843c2017-03-21 16:39:15 +01001356 { "agent-check", srv_parse_agent_check, 0, 1 }, /* Enable an auxiliary agent check */
Frédéric Lécaille1502cfd2017-03-10 15:36:14 +01001357 { "backup", srv_parse_backup, 0, 1 }, /* Flag as backup server */
Frédéric Lécaille65aa3562017-03-14 11:20:13 +01001358 { "check", srv_parse_check, 0, 1 }, /* enable health checks */
Frédéric Lécaille25df8902017-03-10 14:04:31 +01001359 { "check-send-proxy", srv_parse_check_send_proxy, 0, 1 }, /* enable PROXY protocol for health checks */
Frédéric Lécaille9d1b95b2017-03-15 09:13:33 +01001360 { "cookie", srv_parse_cookie, 1, 1 }, /* Assign a cookie to the server */
Frédéric Lécaille2a0d0612017-03-21 11:53:54 +01001361 { "disabled", srv_parse_disabled, 0, 1 }, /* Start the server in 'disabled' state */
1362 { "enabled", srv_parse_enabled, 0, 1 }, /* Start the server in 'enabled' state */
Frédéric Lécaille1502cfd2017-03-10 15:36:14 +01001363 { "id", srv_parse_id, 1, 0 }, /* set id# of server */
Willy Tarreau9c538e02019-01-23 10:21:49 +01001364 { "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 +01001365 { "namespace", srv_parse_namespace, 1, 1 }, /* Namespace the server socket belongs to (if supported) */
Frédéric Lécaille6e0843c2017-03-21 16:39:15 +01001366 { "no-agent-check", srv_parse_no_agent_check, 0, 1 }, /* Do not enable any auxiliary agent check */
Frédéric Lécaille1502cfd2017-03-10 15:36:14 +01001367 { "no-backup", srv_parse_no_backup, 0, 1 }, /* Flag as non-backup server */
Frédéric Lécaille65aa3562017-03-14 11:20:13 +01001368 { "no-check", srv_parse_no_check, 0, 1 }, /* disable health checks */
Frédéric Lécaille25df8902017-03-10 14:04:31 +01001369 { "no-check-send-proxy", srv_parse_no_check_send_proxy, 0, 1 }, /* disable PROXY protol for health checks */
Frédéric Lécaille31045e42017-03-10 16:40:00 +01001370 { "no-send-proxy", srv_parse_no_send_proxy, 0, 1 }, /* Disable use of PROXY V1 protocol */
1371 { "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 +02001372 { "no-tfo", srv_parse_no_tfo, 0, 1 }, /* Disable use of TCP Fast Open */
Frédéric Lécaillef9bc1d62017-03-10 15:50:49 +01001373 { "non-stick", srv_parse_non_stick, 0, 1 }, /* Disable stick-table persistence */
Frédéric Lécaille547356e2017-03-15 08:55:39 +01001374 { "observe", srv_parse_observe, 1, 1 }, /* Enables health adjusting based on observing communication with the server */
Olivier Houchard006e3102018-12-10 18:30:32 +01001375 { "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 +01001376 { "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 +02001377 { "proto", srv_parse_proto, 1, 1 }, /* Set the proto to use for all outgoing connections */
Emmanuel Hocdetf643b802018-02-01 15:20:32 +01001378 { "proxy-v2-options", srv_parse_proxy_v2_options, 1, 1 }, /* options for send-proxy-v2 */
Frédéric Lécaille16186232017-03-14 16:42:49 +01001379 { "redir", srv_parse_redir, 1, 1 }, /* Enable redirection mode */
Frédéric Lécaille31045e42017-03-10 16:40:00 +01001380 { "send-proxy", srv_parse_send_proxy, 0, 1 }, /* Enforce use of PROXY V1 protocol */
1381 { "send-proxy-v2", srv_parse_send_proxy_v2, 0, 1 }, /* Enforce use of PROXY V2 protocol */
Frédéric Lécailledfacd692017-04-16 17:14:14 +02001382 { "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 +01001383 { "stick", srv_parse_stick, 0, 1 }, /* Enable stick-table persistence */
Olivier Houchard8d82db72019-07-04 13:34:10 +02001384 { "tfo", srv_parse_tfo, 0, 1 }, /* enable TCP Fast Open of server */
Frédéric Lécaille67e0e612017-03-14 15:21:31 +01001385 { "track", srv_parse_track, 1, 1 }, /* Set the current state of the server, tracking another one */
Alexander Liu2a54bb72019-05-22 19:44:48 +08001386 { "socks4", srv_parse_socks4, 1, 1 }, /* Set the socks4 proxy of the server*/
1387 { "check-via-socks4", srv_parse_check_via_socks4, 0, 1 }, /* enable socks4 proxy for health checks */
Willy Tarreaudff55432012-10-10 17:51:05 +02001388 { NULL, NULL, 0 },
1389}};
1390
Willy Tarreau0108d902018-11-25 19:14:37 +01001391INITCALL1(STG_REGISTER, srv_register_keywords, &srv_kws);
Willy Tarreaudff55432012-10-10 17:51:05 +02001392
Willy Tarreau004e0452013-11-21 11:22:01 +01001393/* Recomputes the server's eweight based on its state, uweight, the current time,
1394 * and the proxy's algorihtm. To be used after updating sv->uweight. The warmup
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001395 * state is automatically disabled if the time is elapsed. If <must_update> is
1396 * not zero, the update will be propagated immediately.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001397 *
1398 * Must be called with the server lock held.
Willy Tarreau004e0452013-11-21 11:22:01 +01001399 */
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001400void server_recalc_eweight(struct server *sv, int must_update)
Willy Tarreau004e0452013-11-21 11:22:01 +01001401{
1402 struct proxy *px = sv->proxy;
1403 unsigned w;
1404
1405 if (now.tv_sec < sv->last_change || now.tv_sec >= sv->last_change + sv->slowstart) {
1406 /* go to full throttle if the slowstart interval is reached */
Emeric Brun52a91d32017-08-31 14:41:55 +02001407 if (sv->next_state == SRV_ST_STARTING)
1408 sv->next_state = SRV_ST_RUNNING;
Willy Tarreau004e0452013-11-21 11:22:01 +01001409 }
1410
1411 /* We must take care of not pushing the server to full throttle during slow starts.
1412 * It must also start immediately, at least at the minimal step when leaving maintenance.
1413 */
Emeric Brun52a91d32017-08-31 14:41:55 +02001414 if ((sv->next_state == SRV_ST_STARTING) && (px->lbprm.algo & BE_LB_PROP_DYN))
Willy Tarreau004e0452013-11-21 11:22:01 +01001415 w = (px->lbprm.wdiv * (now.tv_sec - sv->last_change) + sv->slowstart) / sv->slowstart;
1416 else
1417 w = px->lbprm.wdiv;
1418
Emeric Brun52a91d32017-08-31 14:41:55 +02001419 sv->next_eweight = (sv->uweight * w + px->lbprm.wmult - 1) / px->lbprm.wmult;
Willy Tarreau004e0452013-11-21 11:22:01 +01001420
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001421 /* propagate changes only if needed (i.e. not recursively) */
Willy Tarreau49725a02018-08-21 19:54:09 +02001422 if (must_update)
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001423 srv_update_status(sv);
Willy Tarreau004e0452013-11-21 11:22:01 +01001424}
1425
Willy Tarreaubaaee002006-06-26 02:48:02 +02001426/*
Simon Horman7d09b9a2013-02-12 10:45:51 +09001427 * Parses weight_str and configures sv accordingly.
1428 * Returns NULL on success, error message string otherwise.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001429 *
1430 * Must be called with the server lock held.
Simon Horman7d09b9a2013-02-12 10:45:51 +09001431 */
1432const char *server_parse_weight_change_request(struct server *sv,
1433 const char *weight_str)
1434{
1435 struct proxy *px;
Simon Hormanb796afa2013-02-12 10:45:53 +09001436 long int w;
1437 char *end;
Simon Horman7d09b9a2013-02-12 10:45:51 +09001438
1439 px = sv->proxy;
1440
1441 /* if the weight is terminated with '%', it is set relative to
1442 * the initial weight, otherwise it is absolute.
1443 */
1444 if (!*weight_str)
1445 return "Require <weight> or <weight%>.\n";
1446
Simon Hormanb796afa2013-02-12 10:45:53 +09001447 w = strtol(weight_str, &end, 10);
1448 if (end == weight_str)
1449 return "Empty weight string empty or preceded by garbage";
1450 else if (end[0] == '%' && end[1] == '\0') {
Simon Horman58b5d292013-02-12 10:45:52 +09001451 if (w < 0)
Simon Horman7d09b9a2013-02-12 10:45:51 +09001452 return "Relative weight must be positive.\n";
Simon Horman58b5d292013-02-12 10:45:52 +09001453 /* Avoid integer overflow */
1454 if (w > 25600)
1455 w = 25600;
Simon Horman7d09b9a2013-02-12 10:45:51 +09001456 w = sv->iweight * w / 100;
Simon Horman58b5d292013-02-12 10:45:52 +09001457 if (w > 256)
1458 w = 256;
Simon Horman7d09b9a2013-02-12 10:45:51 +09001459 }
1460 else if (w < 0 || w > 256)
1461 return "Absolute weight can only be between 0 and 256 inclusive.\n";
Simon Hormanb796afa2013-02-12 10:45:53 +09001462 else if (end[0] != '\0')
1463 return "Trailing garbage in weight string";
Simon Horman7d09b9a2013-02-12 10:45:51 +09001464
1465 if (w && w != sv->iweight && !(px->lbprm.algo & BE_LB_PROP_DYN))
1466 return "Backend is using a static LB algorithm and only accepts weights '0%' and '100%'.\n";
1467
1468 sv->uweight = w;
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001469 server_recalc_eweight(sv, 1);
Simon Horman7d09b9a2013-02-12 10:45:51 +09001470
1471 return NULL;
1472}
1473
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001474/*
Thierry Fournier09a91782016-02-24 08:25:39 +01001475 * Parses <addr_str> and configures <sv> accordingly. <from> precise
1476 * the source of the change in the associated message log.
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001477 * Returns:
1478 * - error string on error
1479 * - NULL on success
Willy Tarreau46b7f532018-08-21 11:54:26 +02001480 *
1481 * Must be called with the server lock held.
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001482 */
1483const char *server_parse_addr_change_request(struct server *sv,
Thierry Fournier09a91782016-02-24 08:25:39 +01001484 const char *addr_str, const char *updater)
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001485{
1486 unsigned char ip[INET6_ADDRSTRLEN];
1487
1488 if (inet_pton(AF_INET6, addr_str, ip)) {
Thierry Fournier09a91782016-02-24 08:25:39 +01001489 update_server_addr(sv, ip, AF_INET6, updater);
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001490 return NULL;
1491 }
1492 if (inet_pton(AF_INET, addr_str, ip)) {
Thierry Fournier09a91782016-02-24 08:25:39 +01001493 update_server_addr(sv, ip, AF_INET, updater);
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001494 return NULL;
1495 }
1496
1497 return "Could not understand IP address format.\n";
1498}
1499
Willy Tarreau46b7f532018-08-21 11:54:26 +02001500/*
1501 * Must be called with the server lock held.
1502 */
Nenad Merdanovic174dd372016-04-24 23:10:06 +02001503const char *server_parse_maxconn_change_request(struct server *sv,
1504 const char *maxconn_str)
1505{
1506 long int v;
1507 char *end;
1508
1509 if (!*maxconn_str)
1510 return "Require <maxconn>.\n";
1511
1512 v = strtol(maxconn_str, &end, 10);
1513 if (end == maxconn_str)
1514 return "maxconn string empty or preceded by garbage";
1515 else if (end[0] != '\0')
1516 return "Trailing garbage in maxconn string";
1517
1518 if (sv->maxconn == sv->minconn) { // static maxconn
1519 sv->maxconn = sv->minconn = v;
1520 } else { // dynamic maxconn
1521 sv->maxconn = v;
1522 }
1523
1524 if (may_dequeue_tasks(sv, sv->proxy))
1525 process_srv_queue(sv);
1526
1527 return NULL;
1528}
1529
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001530#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001531static struct sample_expr *srv_sni_sample_parse_expr(struct server *srv, struct proxy *px,
1532 const char *file, int linenum, char **err)
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001533{
1534 int idx;
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001535 const char *args[] = {
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001536 srv->sni_expr,
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001537 NULL,
1538 };
1539
1540 idx = 0;
Olivier Houchard7d8e6882017-04-20 18:21:17 +02001541 px->conf.args.ctx = ARGC_SRV;
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001542
Willy Tarreaue3b57bf2020-02-14 16:50:14 +01001543 return sample_parse_expr((char **)args, &idx, file, linenum, err, &px->conf.args, NULL);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001544}
1545
1546static int server_parse_sni_expr(struct server *newsrv, struct proxy *px, char **err)
1547{
1548 struct sample_expr *expr;
1549
1550 expr = srv_sni_sample_parse_expr(newsrv, px, px->conf.file, px->conf.line, err);
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001551 if (!expr) {
1552 memprintf(err, "error detected while parsing sni expression : %s", *err);
1553 return ERR_ALERT | ERR_FATAL;
1554 }
1555
1556 if (!(expr->fetch->val & SMP_VAL_BE_SRV_CON)) {
1557 memprintf(err, "error detected while parsing sni expression : "
1558 " fetch method '%s' extracts information from '%s', "
1559 "none of which is available here.\n",
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001560 newsrv->sni_expr, sample_src_names(expr->fetch->use));
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001561 return ERR_ALERT | ERR_FATAL;
1562 }
1563
1564 px->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY);
1565 release_sample_expr(newsrv->ssl_ctx.sni);
1566 newsrv->ssl_ctx.sni = expr;
1567
1568 return 0;
1569}
1570#endif
1571
1572static void display_parser_err(const char *file, int linenum, char **args, int cur_arg, char **err)
1573{
1574 if (err && *err) {
1575 indent_msg(err, 2);
Christopher Faulet767a84b2017-11-24 16:50:31 +01001576 ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], *err);
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001577 }
1578 else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001579 ha_alert("parsing [%s:%d] : '%s %s' : error encountered while processing '%s'.\n",
1580 file, linenum, args[0], args[1], args[cur_arg]);
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001581}
1582
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001583static void srv_conn_src_sport_range_cpy(struct server *srv,
1584 struct server *src)
1585{
1586 int range_sz;
1587
1588 range_sz = src->conn_src.sport_range->size;
1589 if (range_sz > 0) {
1590 srv->conn_src.sport_range = port_range_alloc_range(range_sz);
1591 if (srv->conn_src.sport_range != NULL) {
1592 int i;
1593
1594 for (i = 0; i < range_sz; i++) {
1595 srv->conn_src.sport_range->ports[i] =
1596 src->conn_src.sport_range->ports[i];
1597 }
1598 }
1599 }
1600}
1601
1602/*
1603 * Copy <src> server connection source settings to <srv> server everything needed.
1604 */
1605static void srv_conn_src_cpy(struct server *srv, struct server *src)
1606{
1607 srv->conn_src.opts = src->conn_src.opts;
1608 srv->conn_src.source_addr = src->conn_src.source_addr;
1609
1610 /* Source port range copy. */
1611 if (src->conn_src.sport_range != NULL)
1612 srv_conn_src_sport_range_cpy(srv, src);
1613
1614#ifdef CONFIG_HAP_TRANSPARENT
1615 if (src->conn_src.bind_hdr_name != NULL) {
1616 srv->conn_src.bind_hdr_name = strdup(src->conn_src.bind_hdr_name);
1617 srv->conn_src.bind_hdr_len = strlen(src->conn_src.bind_hdr_name);
1618 }
1619 srv->conn_src.bind_hdr_occ = src->conn_src.bind_hdr_occ;
1620 srv->conn_src.tproxy_addr = src->conn_src.tproxy_addr;
1621#endif
1622 if (src->conn_src.iface_name != NULL)
1623 srv->conn_src.iface_name = strdup(src->conn_src.iface_name);
1624}
1625
1626/*
1627 * Copy <src> server SSL settings to <srv> server allocating
1628 * everything needed.
1629 */
1630#if defined(USE_OPENSSL)
1631static void srv_ssl_settings_cpy(struct server *srv, struct server *src)
1632{
1633 if (src->ssl_ctx.ca_file != NULL)
1634 srv->ssl_ctx.ca_file = strdup(src->ssl_ctx.ca_file);
1635 if (src->ssl_ctx.crl_file != NULL)
1636 srv->ssl_ctx.crl_file = strdup(src->ssl_ctx.crl_file);
1637 if (src->ssl_ctx.client_crt != NULL)
1638 srv->ssl_ctx.client_crt = strdup(src->ssl_ctx.client_crt);
1639
1640 srv->ssl_ctx.verify = src->ssl_ctx.verify;
1641
1642 if (src->ssl_ctx.verify_host != NULL)
1643 srv->ssl_ctx.verify_host = strdup(src->ssl_ctx.verify_host);
1644 if (src->ssl_ctx.ciphers != NULL)
1645 srv->ssl_ctx.ciphers = strdup(src->ssl_ctx.ciphers);
Willy Tarreau5db847a2019-05-09 14:13:35 +02001646#if (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L && !defined OPENSSL_IS_BORINGSSL)
Dirkjan Bussink415150f2018-09-14 11:14:21 +02001647 if (src->ssl_ctx.ciphersuites != NULL)
1648 srv->ssl_ctx.ciphersuites = strdup(src->ssl_ctx.ciphersuites);
1649#endif
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001650 if (src->sni_expr != NULL)
1651 srv->sni_expr = strdup(src->sni_expr);
Olivier Houchardc7566002018-11-20 23:33:50 +01001652
1653#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
1654 if (src->ssl_ctx.alpn_str) {
1655 srv->ssl_ctx.alpn_str = malloc(src->ssl_ctx.alpn_len);
1656 if (srv->ssl_ctx.alpn_str) {
1657 memcpy(srv->ssl_ctx.alpn_str, src->ssl_ctx.alpn_str,
1658 src->ssl_ctx.alpn_len);
1659 srv->ssl_ctx.alpn_len = src->ssl_ctx.alpn_len;
1660 }
1661 }
1662#endif
1663#ifdef OPENSSL_NPN_NEGOTIATED
1664 if (src->ssl_ctx.npn_str) {
1665 srv->ssl_ctx.npn_str = malloc(src->ssl_ctx.npn_len);
1666 if (srv->ssl_ctx.npn_str) {
1667 memcpy(srv->ssl_ctx.npn_str, src->ssl_ctx.npn_str,
1668 src->ssl_ctx.npn_len);
1669 srv->ssl_ctx.npn_len = src->ssl_ctx.npn_len;
1670 }
1671 }
1672#endif
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001673}
1674#endif
1675
1676/*
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001677 * Prepare <srv> for hostname resolution.
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001678 * May be safely called with a default server as <src> argument (without hostname).
Frédéric Lécailleb418c122017-04-26 11:24:02 +02001679 * Returns -1 in case of any allocation failure, 0 if not.
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001680 */
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001681static int srv_prepare_for_resolution(struct server *srv, const char *hostname)
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001682{
Christopher Faulet67957bd2017-09-27 11:00:59 +02001683 char *hostname_dn;
1684 int hostname_len, hostname_dn_len;
1685
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001686 if (!hostname)
Frédéric Lécailleb418c122017-04-26 11:24:02 +02001687 return 0;
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001688
Christopher Faulet67957bd2017-09-27 11:00:59 +02001689 hostname_len = strlen(hostname);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001690 hostname_dn = trash.area;
Christopher Faulet67957bd2017-09-27 11:00:59 +02001691 hostname_dn_len = dns_str_to_dn_label(hostname, hostname_len + 1,
1692 hostname_dn, trash.size);
1693 if (hostname_dn_len == -1)
1694 goto err;
Baptiste Assmann81ed1a02017-05-03 10:11:44 +02001695
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001696
Christopher Faulet67957bd2017-09-27 11:00:59 +02001697 free(srv->hostname);
1698 free(srv->hostname_dn);
1699 srv->hostname = strdup(hostname);
1700 srv->hostname_dn = strdup(hostname_dn);
1701 srv->hostname_dn_len = hostname_dn_len;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001702 if (!srv->hostname || !srv->hostname_dn)
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001703 goto err;
1704
Frédéric Lécailleb418c122017-04-26 11:24:02 +02001705 return 0;
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001706
1707 err:
Christopher Faulet67957bd2017-09-27 11:00:59 +02001708 free(srv->hostname); srv->hostname = NULL;
1709 free(srv->hostname_dn); srv->hostname_dn = NULL;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02001710 return -1;
1711}
1712
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001713/*
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001714 * Copy <src> server settings to <srv> server allocating
1715 * everything needed.
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001716 * This function is not supposed to be called at any time, but only
1717 * during server settings parsing or during server allocations from
1718 * a server template, and just after having calloc()'ed a new server.
1719 * So, <src> may only be a default server (when parsing server settings)
1720 * or a server template (during server allocations from a server template).
1721 * <srv_tmpl> distinguishes these two cases (must be 1 if <srv> is a template,
1722 * 0 if not).
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001723 */
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001724static void srv_settings_cpy(struct server *srv, struct server *src, int srv_tmpl)
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001725{
1726 /* Connection source settings copy */
1727 srv_conn_src_cpy(srv, src);
1728
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001729 if (srv_tmpl) {
1730 srv->addr = src->addr;
1731 srv->svc_port = src->svc_port;
1732 }
1733
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001734 srv->pp_opts = src->pp_opts;
1735 if (src->rdr_pfx != NULL) {
1736 srv->rdr_pfx = strdup(src->rdr_pfx);
1737 srv->rdr_len = src->rdr_len;
1738 }
1739 if (src->cookie != NULL) {
1740 srv->cookie = strdup(src->cookie);
1741 srv->cklen = src->cklen;
1742 }
1743 srv->use_ssl = src->use_ssl;
Willy Tarreau24441082019-12-11 15:43:45 +01001744 srv->check.addr = src->check.addr;
1745 srv->agent.addr = src->agent.addr;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001746 srv->check.use_ssl = src->check.use_ssl;
1747 srv->check.port = src->check.port;
Olivier Houchard21944012018-12-21 19:42:01 +01001748 srv->check.sni = src->check.sni;
Olivier Houchard92150142018-12-21 19:47:01 +01001749 srv->check.alpn_str = src->check.alpn_str;
Ilya Shipitsin0c50b1e2019-04-30 21:21:28 +05001750 srv->check.alpn_len = src->check.alpn_len;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001751 /* Note: 'flags' field has potentially been already initialized. */
1752 srv->flags |= src->flags;
1753 srv->do_check = src->do_check;
1754 srv->do_agent = src->do_agent;
1755 if (srv->check.port)
1756 srv->flags |= SRV_F_CHECKPORT;
1757 srv->check.inter = src->check.inter;
1758 srv->check.fastinter = src->check.fastinter;
1759 srv->check.downinter = src->check.downinter;
1760 srv->agent.use_ssl = src->agent.use_ssl;
1761 srv->agent.port = src->agent.port;
1762 if (src->agent.send_string != NULL)
1763 srv->agent.send_string = strdup(src->agent.send_string);
1764 srv->agent.send_string_len = src->agent.send_string_len;
1765 srv->agent.inter = src->agent.inter;
1766 srv->agent.fastinter = src->agent.fastinter;
1767 srv->agent.downinter = src->agent.downinter;
1768 srv->maxqueue = src->maxqueue;
1769 srv->minconn = src->minconn;
1770 srv->maxconn = src->maxconn;
1771 srv->slowstart = src->slowstart;
1772 srv->observe = src->observe;
1773 srv->onerror = src->onerror;
1774 srv->onmarkeddown = src->onmarkeddown;
1775 srv->onmarkedup = src->onmarkedup;
1776 if (src->trackit != NULL)
1777 srv->trackit = strdup(src->trackit);
1778 srv->consecutive_errors_limit = src->consecutive_errors_limit;
1779 srv->uweight = srv->iweight = src->iweight;
1780
1781 srv->check.send_proxy = src->check.send_proxy;
1782 /* health: up, but will fall down at first failure */
1783 srv->check.rise = srv->check.health = src->check.rise;
1784 srv->check.fall = src->check.fall;
1785
1786 /* Here we check if 'disabled' is the default server state */
Emeric Brun52a91d32017-08-31 14:41:55 +02001787 if (src->next_admin & (SRV_ADMF_CMAINT | SRV_ADMF_FMAINT)) {
1788 srv->next_admin |= SRV_ADMF_CMAINT | SRV_ADMF_FMAINT;
1789 srv->next_state = SRV_ST_STOPPED;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001790 srv->check.state |= CHK_ST_PAUSED;
1791 srv->check.health = 0;
1792 }
1793
1794 /* health: up but will fall down at first failure */
1795 srv->agent.rise = srv->agent.health = src->agent.rise;
1796 srv->agent.fall = src->agent.fall;
1797
1798 if (src->resolvers_id != NULL)
1799 srv->resolvers_id = strdup(src->resolvers_id);
1800 srv->dns_opts.family_prio = src->dns_opts.family_prio;
Baptiste Assmann8e2d9432018-06-22 15:04:43 +02001801 srv->dns_opts.accept_duplicate_ip = src->dns_opts.accept_duplicate_ip;
Daniel Corbettf8716912019-11-17 09:48:56 -05001802 srv->dns_opts.ignore_weight = src->dns_opts.ignore_weight;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001803 if (srv->dns_opts.family_prio == AF_UNSPEC)
1804 srv->dns_opts.family_prio = AF_INET6;
1805 memcpy(srv->dns_opts.pref_net,
1806 src->dns_opts.pref_net,
1807 sizeof srv->dns_opts.pref_net);
1808 srv->dns_opts.pref_net_nb = src->dns_opts.pref_net_nb;
1809
1810 srv->init_addr_methods = src->init_addr_methods;
1811 srv->init_addr = src->init_addr;
1812#if defined(USE_OPENSSL)
1813 srv_ssl_settings_cpy(srv, src);
1814#endif
1815#ifdef TCP_USER_TIMEOUT
1816 srv->tcp_ut = src->tcp_ut;
1817#endif
Christopher Faulet8ed0a3e2018-04-10 14:45:45 +02001818 srv->mux_proto = src->mux_proto;
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01001819 srv->pool_purge_delay = src->pool_purge_delay;
Olivier Houchard006e3102018-12-10 18:30:32 +01001820 srv->max_idle_conns = src->max_idle_conns;
Willy Tarreau9c538e02019-01-23 10:21:49 +01001821 srv->max_reuse = src->max_reuse;
Christopher Faulet8ed0a3e2018-04-10 14:45:45 +02001822
Olivier Houchard8da5f982017-08-04 18:35:36 +02001823 if (srv_tmpl)
1824 srv->srvrq = src->srvrq;
Alexander Liu2a54bb72019-05-22 19:44:48 +08001825
1826 srv->check.via_socks4 = src->check.via_socks4;
1827 srv->socks4_addr = src->socks4_addr;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001828}
1829
William Lallemand313bfd12018-10-26 14:47:32 +02001830struct server *new_server(struct proxy *proxy)
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001831{
1832 struct server *srv;
1833
1834 srv = calloc(1, sizeof *srv);
1835 if (!srv)
1836 return NULL;
1837
1838 srv->obj_type = OBJ_TYPE_SERVER;
1839 srv->proxy = proxy;
1840 LIST_INIT(&srv->actconns);
Patrick Hemmer0355dab2018-05-11 12:52:31 -04001841 srv->pendconns = EB_ROOT;
Christopher Faulet40a007c2017-07-03 15:41:01 +02001842
Emeric Brun52a91d32017-08-31 14:41:55 +02001843 srv->next_state = SRV_ST_RUNNING; /* early server setup */
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001844 srv->last_change = now.tv_sec;
1845
1846 srv->check.status = HCHK_STATUS_INI;
1847 srv->check.server = srv;
Olivier Houchardc98aa1f2019-01-11 18:17:17 +01001848 srv->check.proxy = proxy;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001849 srv->check.tcpcheck_rules = &proxy->tcpcheck_rules;
1850
1851 srv->agent.status = HCHK_STATUS_INI;
1852 srv->agent.server = srv;
Willy Tarreau1ba32032019-01-21 07:48:26 +01001853 srv->agent.proxy = proxy;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001854 srv->xprt = srv->check.xprt = srv->agent.xprt = xprt_get(XPRT_RAW);
1855
Willy Tarreau975b1552019-06-06 16:25:55 +02001856 /* please don't put default server settings here, they are set in
1857 * init_default_instance().
1858 */
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001859 return srv;
1860}
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001861
1862/*
1863 * Validate <srv> server health-check settings.
1864 * Returns 0 if everything is OK, -1 if not.
1865 */
1866static int server_healthcheck_validate(const char *file, int linenum, struct server *srv)
1867{
1868 struct tcpcheck_rule *r = NULL;
1869 struct list *l;
1870
1871 /*
1872 * We need at least a service port, a check port or the first tcp-check rule must
1873 * be a 'connect' one when checking an IPv4/IPv6 server.
1874 */
1875 if ((srv_check_healthcheck_port(&srv->check) != 0) ||
1876 (!is_inet_addr(&srv->check.addr) && (is_addr(&srv->check.addr) || !is_inet_addr(&srv->addr))))
1877 return 0;
1878
1879 r = (struct tcpcheck_rule *)srv->proxy->tcpcheck_rules.n;
1880 if (!r) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001881 ha_alert("parsing [%s:%d] : server %s has neither service port nor check port. "
1882 "Check has been disabled.\n",
1883 file, linenum, srv->id);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001884 return -1;
1885 }
1886
1887 /* search the first action (connect / send / expect) in the list */
1888 l = &srv->proxy->tcpcheck_rules;
1889 list_for_each_entry(r, l, list) {
1890 if (r->action != TCPCHK_ACT_COMMENT)
1891 break;
1892 }
1893
1894 if ((r->action != TCPCHK_ACT_CONNECT) || !r->port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001895 ha_alert("parsing [%s:%d] : server %s has neither service port nor check port "
1896 "nor tcp_check rule 'connect' with port information. Check has been disabled.\n",
1897 file, linenum, srv->id);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001898 return -1;
1899 }
1900
1901 /* scan the tcp-check ruleset to ensure a port has been configured */
1902 l = &srv->proxy->tcpcheck_rules;
1903 list_for_each_entry(r, l, list) {
1904 if ((r->action == TCPCHK_ACT_CONNECT) && (!r->port)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001905 ha_alert("parsing [%s:%d] : server %s has neither service port nor check port, "
1906 "and a tcp_check rule 'connect' with no port information. Check has been disabled.\n",
1907 file, linenum, srv->id);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001908 return -1;
1909 }
1910 }
1911
1912 return 0;
1913}
1914
1915/*
1916 * Initialize <srv> health-check structure.
1917 * Returns the error string in case of memory allocation failure, NULL if not.
1918 */
1919static const char *do_health_check_init(struct server *srv, int check_type, int state)
1920{
1921 const char *ret;
1922
1923 if (!srv->do_check)
1924 return NULL;
1925
1926 ret = init_check(&srv->check, check_type);
1927 if (ret)
1928 return ret;
1929
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001930 srv->check.state |= state;
1931 global.maxsock++;
1932
1933 return NULL;
1934}
1935
1936static int server_health_check_init(const char *file, int linenum,
1937 struct server *srv, struct proxy *curproxy)
1938{
1939 const char *ret;
1940
1941 if (!srv->do_check)
1942 return 0;
1943
1944 if (srv->trackit) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001945 ha_alert("parsing [%s:%d]: unable to enable checks and tracking at the same time!\n",
1946 file, linenum);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001947 return ERR_ALERT | ERR_FATAL;
1948 }
1949
1950 if (server_healthcheck_validate(file, linenum, srv) < 0)
1951 return ERR_ALERT | ERR_ABORT;
1952
1953 /* note: check type will be set during the config review phase */
1954 ret = do_health_check_init(srv, 0, CHK_ST_CONFIGURED | CHK_ST_ENABLED);
1955 if (ret) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001956 ha_alert("parsing [%s:%d] : %s.\n", file, linenum, ret);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001957 return ERR_ALERT | ERR_ABORT;
1958 }
1959
1960 return 0;
1961}
1962
1963/*
1964 * Initialize <srv> agent check structure.
1965 * Returns the error string in case of memory allocation failure, NULL if not.
1966 */
1967static const char *do_server_agent_check_init(struct server *srv, int state)
1968{
1969 const char *ret;
1970
1971 if (!srv->do_agent)
1972 return NULL;
1973
1974 ret = init_check(&srv->agent, PR_O2_LB_AGENT_CHK);
1975 if (ret)
1976 return ret;
1977
1978 if (!srv->agent.inter)
1979 srv->agent.inter = srv->check.inter;
1980
1981 srv->agent.state |= state;
1982 global.maxsock++;
1983
1984 return NULL;
1985}
1986
1987static int server_agent_check_init(const char *file, int linenum,
1988 struct server *srv, struct proxy *curproxy)
1989{
1990 const char *ret;
1991
1992 if (!srv->do_agent)
1993 return 0;
1994
1995 if (!srv->agent.port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001996 ha_alert("parsing [%s:%d] : server %s does not have agent port. Agent check has been disabled.\n",
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001997 file, linenum, srv->id);
1998 return ERR_ALERT | ERR_FATAL;
1999 }
2000
2001 ret = do_server_agent_check_init(srv, CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_AGENT);
2002 if (ret) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002003 ha_alert("parsing [%s:%d] : %s.\n", file, linenum, ret);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02002004 return ERR_ALERT | ERR_ABORT;
2005 }
2006
2007 return 0;
2008}
2009
2010#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
2011static int server_sni_expr_init(const char *file, int linenum, char **args, int cur_arg,
2012 struct server *srv, struct proxy *proxy)
2013{
2014 int ret;
2015 char *err = NULL;
2016
2017 if (!srv->sni_expr)
2018 return 0;
2019
2020 ret = server_parse_sni_expr(srv, proxy, &err);
2021 if (!ret)
2022 return 0;
2023
2024 display_parser_err(file, linenum, args, cur_arg, &err);
2025 free(err);
2026
2027 return ret;
2028}
2029#endif
2030
2031/*
2032 * Server initializations finalization.
2033 * Initialize health check, agent check and SNI expression if enabled.
2034 * Must not be called for a default server instance.
2035 */
2036static int server_finalize_init(const char *file, int linenum, char **args, int cur_arg,
2037 struct server *srv, struct proxy *px)
2038{
2039 int ret;
2040
2041 if ((ret = server_health_check_init(file, linenum, srv, px)) != 0 ||
2042 (ret = server_agent_check_init(file, linenum, srv, px)) != 0) {
2043 return ret;
2044 }
2045
2046#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
2047 if ((ret = server_sni_expr_init(file, linenum, args, cur_arg, srv, px)) != 0)
2048 return ret;
2049#endif
2050
2051 if (srv->flags & SRV_F_BACKUP)
2052 px->srv_bck++;
2053 else
2054 px->srv_act++;
2055 srv_lb_commit_status(srv);
2056
2057 return 0;
2058}
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02002059
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002060/*
2061 * Parse as much as possible such a range string argument: low[-high]
2062 * Set <nb_low> and <nb_high> values so that they may be reused by this loop
2063 * for(int i = nb_low; i <= nb_high; i++)... with nb_low >= 1.
2064 * Fails if 'low' < 0 or 'high' is present and not higher than 'low'.
2065 * Returns 0 if succeeded, -1 if not.
2066 */
2067static int srv_tmpl_parse_range(struct server *srv, const char *arg, int *nb_low, int *nb_high)
2068{
2069 char *nb_high_arg;
2070
2071 *nb_high = 0;
2072 chunk_printf(&trash, "%s", arg);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002073 *nb_low = atoi(trash.area);
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002074
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002075 if ((nb_high_arg = strchr(trash.area, '-'))) {
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002076 *nb_high_arg++ = '\0';
2077 *nb_high = atoi(nb_high_arg);
2078 }
2079 else {
2080 *nb_high += *nb_low;
2081 *nb_low = 1;
2082 }
2083
2084 if (*nb_low < 0 || *nb_high < *nb_low)
2085 return -1;
2086
2087 return 0;
2088}
2089
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002090static inline void srv_set_id_from_prefix(struct server *srv, const char *prefix, int nb)
2091{
2092 chunk_printf(&trash, "%s%d", prefix, nb);
2093 free(srv->id);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002094 srv->id = strdup(trash.area);
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002095}
2096
2097/*
2098 * Initialize as much as possible servers from <srv> server template.
2099 * Note that a server template is a special server with
2100 * a few different parameters than a server which has
2101 * been parsed mostly the same way as a server.
Joseph Herlant44466822018-11-15 08:57:51 -08002102 * Returns the number of servers successfully allocated,
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002103 * 'srv' template included.
2104 */
2105static int server_template_init(struct server *srv, struct proxy *px)
2106{
2107 int i;
2108 struct server *newsrv;
2109
2110 for (i = srv->tmpl_info.nb_low + 1; i <= srv->tmpl_info.nb_high; i++) {
2111 int check_init_state;
2112 int agent_init_state;
2113
2114 newsrv = new_server(px);
2115 if (!newsrv)
2116 goto err;
2117
2118 srv_settings_cpy(newsrv, srv, 1);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02002119 srv_prepare_for_resolution(newsrv, srv->hostname);
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002120#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
2121 if (newsrv->sni_expr) {
2122 newsrv->ssl_ctx.sni = srv_sni_sample_parse_expr(newsrv, px, NULL, 0, NULL);
2123 if (!newsrv->ssl_ctx.sni)
2124 goto err;
2125 }
2126#endif
2127 /* Set this new server ID. */
2128 srv_set_id_from_prefix(newsrv, srv->tmpl_info.prefix, i);
2129
2130 /* Initial checks states. */
2131 check_init_state = CHK_ST_CONFIGURED | CHK_ST_ENABLED;
2132 agent_init_state = CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_AGENT;
2133
2134 if (do_health_check_init(newsrv, px->options2 & PR_O2_CHK_ANY, check_init_state) ||
2135 do_server_agent_check_init(newsrv, agent_init_state))
2136 goto err;
2137
2138 /* Linked backwards first. This will be restablished after parsing. */
2139 newsrv->next = px->srv;
2140 px->srv = newsrv;
2141 }
2142 srv_set_id_from_prefix(srv, srv->tmpl_info.prefix, srv->tmpl_info.nb_low);
2143
2144 return i - srv->tmpl_info.nb_low;
2145
2146 err:
2147 srv_set_id_from_prefix(srv, srv->tmpl_info.prefix, srv->tmpl_info.nb_low);
2148 if (newsrv) {
2149#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
2150 release_sample_expr(newsrv->ssl_ctx.sni);
2151#endif
2152 free_check(&newsrv->agent);
2153 free_check(&newsrv->check);
2154 }
2155 free(newsrv);
2156 return i - srv->tmpl_info.nb_low;
2157}
2158
Frédéric Lécaille355b2032019-01-11 14:06:12 +01002159int parse_server(const char *file, int linenum, char **args, struct proxy *curproxy, struct proxy *defproxy, int parse_addr)
Willy Tarreau272adea2014-03-31 10:39:59 +02002160{
2161 struct server *newsrv = NULL;
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002162 const char *err = NULL;
Willy Tarreau272adea2014-03-31 10:39:59 +02002163 char *errmsg = NULL;
2164 int err_code = 0;
2165 unsigned val;
Willy Tarreau07101d52015-09-08 16:16:35 +02002166 char *fqdn = NULL;
Willy Tarreau272adea2014-03-31 10:39:59 +02002167
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002168 if (!strcmp(args[0], "server") ||
Frédéric Lécaillec06b5d42018-04-26 10:06:41 +02002169 !strcmp(args[0], "peer") ||
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002170 !strcmp(args[0], "default-server") ||
2171 !strcmp(args[0], "server-template")) {
Willy Tarreau272adea2014-03-31 10:39:59 +02002172 int cur_arg;
Frédéric Lécaille6e0843c2017-03-21 16:39:15 +01002173 int defsrv = (*args[0] == 'd');
Frédéric Lécaillec06b5d42018-04-26 10:06:41 +02002174 int srv = !defsrv && (*args[0] == 'p' || !strcmp(args[0], "server"));
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002175 int srv_tmpl = !defsrv && !srv;
2176 int tmpl_range_low = 0, tmpl_range_high = 0;
Willy Tarreau272adea2014-03-31 10:39:59 +02002177
2178 if (!defsrv && curproxy == defproxy) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002179 ha_alert("parsing [%s:%d] : '%s' not allowed in 'defaults' section.\n", file, linenum, args[0]);
Willy Tarreau272adea2014-03-31 10:39:59 +02002180 err_code |= ERR_ALERT | ERR_FATAL;
2181 goto out;
2182 }
2183 else if (warnifnotcap(curproxy, PR_CAP_BE, file, linenum, args[0], NULL))
Olivier Houchard306e6532018-07-24 16:48:59 +02002184 err_code |= ERR_WARN;
Willy Tarreau272adea2014-03-31 10:39:59 +02002185
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002186 /* There is no mandatory first arguments for default server. */
Frédéric Lécaille355b2032019-01-11 14:06:12 +01002187 if (srv && parse_addr) {
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002188 if (!*args[2]) {
2189 /* 'server' line number of argument check. */
Christopher Faulet767a84b2017-11-24 16:50:31 +01002190 ha_alert("parsing [%s:%d] : '%s' expects <name> and <addr>[:<port>] as arguments.\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002191 file, linenum, args[0]);
2192 err_code |= ERR_ALERT | ERR_FATAL;
2193 goto out;
2194 }
2195
2196 err = invalid_char(args[1]);
2197 }
2198 else if (srv_tmpl) {
2199 if (!*args[3]) {
2200 /* 'server-template' line number of argument check. */
Christopher Faulet767a84b2017-11-24 16:50:31 +01002201 ha_alert("parsing [%s:%d] : '%s' expects <prefix> <nb | range> <addr>[:<port>] as arguments.\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002202 file, linenum, args[0]);
2203 err_code |= ERR_ALERT | ERR_FATAL;
2204 goto out;
2205 }
2206
2207 err = invalid_prefix_char(args[1]);
Willy Tarreau272adea2014-03-31 10:39:59 +02002208 }
2209
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002210 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002211 ha_alert("parsing [%s:%d] : character '%c' is not permitted in %s %s '%s'.\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002212 file, linenum, *err, args[0], srv ? "name" : "prefix", args[1]);
Willy Tarreau272adea2014-03-31 10:39:59 +02002213 err_code |= ERR_ALERT | ERR_FATAL;
2214 goto out;
2215 }
2216
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002217 cur_arg = 2;
2218 if (srv_tmpl) {
2219 /* Parse server-template <nb | range> arg. */
2220 if (srv_tmpl_parse_range(newsrv, args[cur_arg], &tmpl_range_low, &tmpl_range_high) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002221 ha_alert("parsing [%s:%d] : Wrong %s number or range arg '%s'.\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002222 file, linenum, args[0], args[cur_arg]);
2223 err_code |= ERR_ALERT | ERR_FATAL;
2224 goto out;
2225 }
2226 cur_arg++;
2227 }
2228
Willy Tarreau272adea2014-03-31 10:39:59 +02002229 if (!defsrv) {
2230 struct sockaddr_storage *sk;
Willy Tarreau6ecb10a2017-01-06 18:36:06 +01002231 int port1, port2, port;
Willy Tarreau272adea2014-03-31 10:39:59 +02002232 struct protocol *proto;
2233
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02002234 newsrv = new_server(curproxy);
2235 if (!newsrv) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002236 ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
Willy Tarreau272adea2014-03-31 10:39:59 +02002237 err_code |= ERR_ALERT | ERR_ABORT;
2238 goto out;
2239 }
2240
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002241 if (srv_tmpl) {
2242 newsrv->tmpl_info.nb_low = tmpl_range_low;
2243 newsrv->tmpl_info.nb_high = tmpl_range_high;
2244 }
2245
Willy Tarreau272adea2014-03-31 10:39:59 +02002246 /* the servers are linked backwards first */
2247 newsrv->next = curproxy->srv;
2248 curproxy->srv = newsrv;
Willy Tarreau272adea2014-03-31 10:39:59 +02002249 newsrv->conf.file = strdup(file);
2250 newsrv->conf.line = linenum;
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002251 /* Note: for a server template, its id is its prefix.
2252 * This is a temporary id which will be used for server allocations to come
2253 * after parsing.
2254 */
2255 if (srv)
2256 newsrv->id = strdup(args[1]);
2257 else
2258 newsrv->tmpl_info.prefix = strdup(args[1]);
Willy Tarreau272adea2014-03-31 10:39:59 +02002259
2260 /* several ways to check the port component :
2261 * - IP => port=+0, relative (IPv4 only)
2262 * - IP: => port=+0, relative
2263 * - IP:N => port=N, absolute
2264 * - IP:+N => port=+N, relative
2265 * - IP:-N => port=-N, relative
2266 */
Frédéric Lécaille355b2032019-01-11 14:06:12 +01002267 if (!parse_addr)
2268 goto skip_addr;
2269
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002270 sk = str2sa_range(args[cur_arg], &port, &port1, &port2, &errmsg, NULL, &fqdn, 0);
Willy Tarreau272adea2014-03-31 10:39:59 +02002271 if (!sk) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002272 ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], errmsg);
Willy Tarreau272adea2014-03-31 10:39:59 +02002273 err_code |= ERR_ALERT | ERR_FATAL;
2274 goto out;
2275 }
2276
2277 proto = protocol_by_family(sk->ss_family);
Willy Tarreau9698f4b2017-01-06 18:42:57 +01002278 if (!fqdn && (!proto || !proto->connect)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002279 ha_alert("parsing [%s:%d] : '%s %s' : connect() not supported for this address family.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002280 file, linenum, args[0], args[1]);
2281 err_code |= ERR_ALERT | ERR_FATAL;
2282 goto out;
2283 }
2284
2285 if (!port1 || !port2) {
2286 /* no port specified, +offset, -offset */
Willy Tarreauc93cd162014-05-13 15:54:22 +02002287 newsrv->flags |= SRV_F_MAPPORTS;
Willy Tarreau272adea2014-03-31 10:39:59 +02002288 }
2289 else if (port1 != port2) {
2290 /* port range */
Christopher Faulet767a84b2017-11-24 16:50:31 +01002291 ha_alert("parsing [%s:%d] : '%s %s' : port ranges are not allowed in '%s'\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002292 file, linenum, args[0], args[1], args[2]);
2293 err_code |= ERR_ALERT | ERR_FATAL;
2294 goto out;
2295 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002296
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002297 /* save hostname and create associated name resolution */
Baptiste Assmann4f91f7e2017-05-03 12:09:54 +02002298 if (fqdn) {
Christopher Faulet67957bd2017-09-27 11:00:59 +02002299 if (fqdn[0] == '_') { /* SRV record */
Olivier Houchard8da5f982017-08-04 18:35:36 +02002300 /* Check if a SRV request already exists, and if not, create it */
Christopher Faulet67957bd2017-09-27 11:00:59 +02002301 if ((newsrv->srvrq = find_srvrq_by_name(fqdn, curproxy)) == NULL)
2302 newsrv->srvrq = new_dns_srvrq(newsrv, fqdn);
2303 if (newsrv->srvrq == NULL) {
Olivier Houchard8da5f982017-08-04 18:35:36 +02002304 err_code |= ERR_ALERT | ERR_FATAL;
2305 goto out;
Christopher Faulet67957bd2017-09-27 11:00:59 +02002306 }
2307 }
2308 else if (srv_prepare_for_resolution(newsrv, fqdn) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002309 ha_alert("parsing [%s:%d] : Can't create DNS resolution for server '%s'\n",
Christopher Faulet67957bd2017-09-27 11:00:59 +02002310 file, linenum, newsrv->id);
2311 err_code |= ERR_ALERT | ERR_FATAL;
2312 goto out;
Baptiste Assmann4f91f7e2017-05-03 12:09:54 +02002313 }
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002314 }
2315
Willy Tarreau272adea2014-03-31 10:39:59 +02002316 newsrv->addr = *sk;
Willy Tarreau6ecb10a2017-01-06 18:36:06 +01002317 newsrv->svc_port = port;
Willy Tarreau272adea2014-03-31 10:39:59 +02002318
Olivier Houchard8da5f982017-08-04 18:35:36 +02002319 if (!newsrv->srvrq && !newsrv->hostname && !protocol_by_family(newsrv->addr.ss_family)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002320 ha_alert("parsing [%s:%d] : Unknown protocol family %d '%s'\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002321 file, linenum, newsrv->addr.ss_family, args[cur_arg]);
Willy Tarreau272adea2014-03-31 10:39:59 +02002322 err_code |= ERR_ALERT | ERR_FATAL;
2323 goto out;
2324 }
Frédéric Lécaille5c3cd972017-03-15 16:36:09 +01002325
Frédéric Lécaille355b2032019-01-11 14:06:12 +01002326 cur_arg++;
2327 skip_addr:
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02002328 /* Copy default server settings to new server settings. */
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002329 srv_settings_cpy(newsrv, &curproxy->defsrv, 0);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002330 HA_SPIN_INIT(&newsrv->lock);
Willy Tarreau272adea2014-03-31 10:39:59 +02002331 } else {
2332 newsrv = &curproxy->defsrv;
2333 cur_arg = 1;
Thierry Fournierada34842016-02-17 21:25:09 +01002334 newsrv->dns_opts.family_prio = AF_INET6;
Baptiste Assmann8e2d9432018-06-22 15:04:43 +02002335 newsrv->dns_opts.accept_duplicate_ip = 0;
Willy Tarreau272adea2014-03-31 10:39:59 +02002336 }
2337
2338 while (*args[cur_arg]) {
Frédéric Lécaille6e0843c2017-03-21 16:39:15 +01002339 if (!strcmp(args[cur_arg], "agent-inter")) {
Willy Tarreau272adea2014-03-31 10:39:59 +02002340 const char *err = parse_time_err(args[cur_arg + 1], &val, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02002341
2342 if (err == PARSE_TIME_OVER) {
2343 ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s> of server %s, maximum value is 2147483647 ms (~24.8 days).\n",
2344 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2345 err_code |= ERR_ALERT | ERR_FATAL;
2346 goto out;
2347 }
2348 else if (err == PARSE_TIME_UNDER) {
2349 ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s> of server %s, minimum non-null value is 1 ms.\n",
2350 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2351 err_code |= ERR_ALERT | ERR_FATAL;
2352 goto out;
2353 }
2354 else if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002355 ha_alert("parsing [%s:%d] : unexpected character '%c' in 'agent-inter' argument of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002356 file, linenum, *err, newsrv->id);
2357 err_code |= ERR_ALERT | ERR_FATAL;
2358 goto out;
2359 }
2360 if (val <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002361 ha_alert("parsing [%s:%d]: invalid value %d for argument '%s' of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002362 file, linenum, val, args[cur_arg], newsrv->id);
2363 err_code |= ERR_ALERT | ERR_FATAL;
2364 goto out;
2365 }
2366 newsrv->agent.inter = val;
2367 cur_arg += 2;
2368 }
Misiekea849332017-01-09 09:39:51 +01002369 else if (!strcmp(args[cur_arg], "agent-addr")) {
2370 if(str2ip(args[cur_arg + 1], &newsrv->agent.addr) == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002371 ha_alert("parsing agent-addr failed. Check if %s is correct address.\n", args[cur_arg + 1]);
Misiekea849332017-01-09 09:39:51 +01002372 goto out;
2373 }
2374
2375 cur_arg += 2;
2376 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002377 else if (!strcmp(args[cur_arg], "agent-port")) {
2378 global.maxsock++;
2379 newsrv->agent.port = atol(args[cur_arg + 1]);
2380 cur_arg += 2;
2381 }
James Brown55f9ff12015-10-21 18:19:05 -07002382 else if (!strcmp(args[cur_arg], "agent-send")) {
2383 global.maxsock++;
2384 free(newsrv->agent.send_string);
2385 newsrv->agent.send_string_len = strlen(args[cur_arg + 1]);
2386 newsrv->agent.send_string = calloc(1, newsrv->agent.send_string_len + 1);
2387 memcpy(newsrv->agent.send_string, args[cur_arg + 1], newsrv->agent.send_string_len);
2388 cur_arg += 2;
2389 }
Baptiste Assmann25938272016-09-21 20:26:16 +02002390 else if (!strcmp(args[cur_arg], "init-addr")) {
2391 char *p, *end;
2392 int done;
Willy Tarreau4310d362016-11-02 15:05:56 +01002393 struct sockaddr_storage sa;
Baptiste Assmann25938272016-09-21 20:26:16 +02002394
2395 newsrv->init_addr_methods = 0;
2396 memset(&newsrv->init_addr, 0, sizeof(newsrv->init_addr));
2397
2398 for (p = args[cur_arg + 1]; *p; p = end) {
2399 /* cut on next comma */
2400 for (end = p; *end && *end != ','; end++);
2401 if (*end)
2402 *(end++) = 0;
2403
Willy Tarreau4310d362016-11-02 15:05:56 +01002404 memset(&sa, 0, sizeof(sa));
Baptiste Assmann25938272016-09-21 20:26:16 +02002405 if (!strcmp(p, "libc")) {
2406 done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_LIBC);
2407 }
2408 else if (!strcmp(p, "last")) {
2409 done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_LAST);
2410 }
Willy Tarreau37ebe122016-11-04 15:17:58 +01002411 else if (!strcmp(p, "none")) {
2412 done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_NONE);
2413 }
Willy Tarreau4310d362016-11-02 15:05:56 +01002414 else if (str2ip2(p, &sa, 0)) {
2415 if (is_addr(&newsrv->init_addr)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002416 ha_alert("parsing [%s:%d]: '%s' : initial address already specified, cannot add '%s'.\n",
Willy Tarreau4310d362016-11-02 15:05:56 +01002417 file, linenum, args[cur_arg], p);
2418 err_code |= ERR_ALERT | ERR_FATAL;
2419 goto out;
2420 }
2421 newsrv->init_addr = sa;
2422 done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_IP);
2423 }
Baptiste Assmann25938272016-09-21 20:26:16 +02002424 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002425 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 +02002426 file, linenum, args[cur_arg], p);
2427 err_code |= ERR_ALERT | ERR_FATAL;
2428 goto out;
2429 }
2430 if (!done) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002431 ha_alert("parsing [%s:%d]: '%s' : too many init-addr methods when trying to add '%s'\n",
Baptiste Assmann25938272016-09-21 20:26:16 +02002432 file, linenum, args[cur_arg], p);
2433 err_code |= ERR_ALERT | ERR_FATAL;
2434 goto out;
2435 }
2436 }
2437 cur_arg += 2;
2438 }
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002439 else if (!strcmp(args[cur_arg], "resolvers")) {
Frédéric Lécailledaa2fe62017-04-20 12:17:50 +02002440 free(newsrv->resolvers_id);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002441 newsrv->resolvers_id = strdup(args[cur_arg + 1]);
2442 cur_arg += 2;
2443 }
Baptiste Assmann8e2d9432018-06-22 15:04:43 +02002444 else if (!strcmp(args[cur_arg], "resolve-opts")) {
2445 char *p, *end;
2446
2447 for (p = args[cur_arg + 1]; *p; p = end) {
2448 /* cut on next comma */
2449 for (end = p; *end && *end != ','; end++);
2450 if (*end)
2451 *(end++) = 0;
2452
2453 if (!strcmp(p, "allow-dup-ip")) {
2454 newsrv->dns_opts.accept_duplicate_ip = 1;
2455 }
Daniel Corbettf8716912019-11-17 09:48:56 -05002456 else if (!strcmp(p, "ignore-weight")) {
2457 newsrv->dns_opts.ignore_weight = 1;
2458 }
Baptiste Assmann8e2d9432018-06-22 15:04:43 +02002459 else if (!strcmp(p, "prevent-dup-ip")) {
2460 newsrv->dns_opts.accept_duplicate_ip = 0;
2461 }
2462 else {
Daniel Corbettf8716912019-11-17 09:48:56 -05002463 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 +02002464 file, linenum, args[cur_arg], p);
2465 err_code |= ERR_ALERT | ERR_FATAL;
2466 goto out;
2467 }
2468 }
2469
2470 cur_arg += 2;
2471 }
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002472 else if (!strcmp(args[cur_arg], "resolve-prefer")) {
2473 if (!strcmp(args[cur_arg + 1], "ipv4"))
Thierry Fournierada34842016-02-17 21:25:09 +01002474 newsrv->dns_opts.family_prio = AF_INET;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002475 else if (!strcmp(args[cur_arg + 1], "ipv6"))
Thierry Fournierada34842016-02-17 21:25:09 +01002476 newsrv->dns_opts.family_prio = AF_INET6;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002477 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002478 ha_alert("parsing [%s:%d]: '%s' expects either ipv4 or ipv6 as argument.\n",
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002479 file, linenum, args[cur_arg]);
2480 err_code |= ERR_ALERT | ERR_FATAL;
2481 goto out;
2482 }
2483 cur_arg += 2;
2484 }
Thierry Fournierac88cfe2016-02-17 22:05:30 +01002485 else if (!strcmp(args[cur_arg], "resolve-net")) {
2486 char *p, *e;
2487 unsigned char mask;
2488 struct dns_options *opt;
2489
2490 if (!args[cur_arg + 1] || args[cur_arg + 1][0] == '\0') {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002491 ha_alert("parsing [%s:%d]: '%s' expects a list of networks.\n",
Thierry Fournierac88cfe2016-02-17 22:05:30 +01002492 file, linenum, args[cur_arg]);
2493 err_code |= ERR_ALERT | ERR_FATAL;
2494 goto out;
2495 }
2496
2497 opt = &newsrv->dns_opts;
2498
2499 /* Split arguments by comma, and convert it from ipv4 or ipv6
2500 * string network in in_addr or in6_addr.
2501 */
2502 p = args[cur_arg + 1];
2503 e = p;
2504 while (*p != '\0') {
Joseph Herlant44466822018-11-15 08:57:51 -08002505 /* If no room available, return error. */
David Carlierd10025c2016-04-08 10:26:44 +01002506 if (opt->pref_net_nb >= SRV_MAX_PREF_NET) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002507 ha_alert("parsing [%s:%d]: '%s' exceed %d networks.\n",
Thierry Fournierac88cfe2016-02-17 22:05:30 +01002508 file, linenum, args[cur_arg], SRV_MAX_PREF_NET);
2509 err_code |= ERR_ALERT | ERR_FATAL;
2510 goto out;
2511 }
2512 /* look for end or comma. */
2513 while (*e != ',' && *e != '\0')
2514 e++;
2515 if (*e == ',') {
2516 *e = '\0';
2517 e++;
2518 }
2519 if (str2net(p, 0, &opt->pref_net[opt->pref_net_nb].addr.in4,
2520 &opt->pref_net[opt->pref_net_nb].mask.in4)) {
2521 /* Try to convert input string from ipv4 or ipv6 network. */
2522 opt->pref_net[opt->pref_net_nb].family = AF_INET;
2523 } else if (str62net(p, &opt->pref_net[opt->pref_net_nb].addr.in6,
2524 &mask)) {
2525 /* Try to convert input string from ipv6 network. */
2526 len2mask6(mask, &opt->pref_net[opt->pref_net_nb].mask.in6);
2527 opt->pref_net[opt->pref_net_nb].family = AF_INET6;
2528 } else {
2529 /* All network conversions fail, retrun error. */
Christopher Faulet767a84b2017-11-24 16:50:31 +01002530 ha_alert("parsing [%s:%d]: '%s': invalid network '%s'.\n",
Thierry Fournierac88cfe2016-02-17 22:05:30 +01002531 file, linenum, args[cur_arg], p);
2532 err_code |= ERR_ALERT | ERR_FATAL;
2533 goto out;
2534 }
2535 opt->pref_net_nb++;
2536 p = e;
2537 }
2538
2539 cur_arg += 2;
2540 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002541 else if (!strcmp(args[cur_arg], "rise")) {
2542 if (!*args[cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002543 ha_alert("parsing [%s:%d]: '%s' expects an integer argument.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002544 file, linenum, args[cur_arg]);
2545 err_code |= ERR_ALERT | ERR_FATAL;
2546 goto out;
2547 }
2548
2549 newsrv->check.rise = atol(args[cur_arg + 1]);
2550 if (newsrv->check.rise <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002551 ha_alert("parsing [%s:%d]: '%s' has to be > 0.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002552 file, linenum, args[cur_arg]);
2553 err_code |= ERR_ALERT | ERR_FATAL;
2554 goto out;
2555 }
2556
2557 if (newsrv->check.health)
2558 newsrv->check.health = newsrv->check.rise;
2559 cur_arg += 2;
2560 }
2561 else if (!strcmp(args[cur_arg], "fall")) {
2562 newsrv->check.fall = atol(args[cur_arg + 1]);
2563
2564 if (!*args[cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002565 ha_alert("parsing [%s:%d]: '%s' expects an integer argument.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002566 file, linenum, args[cur_arg]);
2567 err_code |= ERR_ALERT | ERR_FATAL;
2568 goto out;
2569 }
2570
2571 if (newsrv->check.fall <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002572 ha_alert("parsing [%s:%d]: '%s' has to be > 0.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002573 file, linenum, args[cur_arg]);
2574 err_code |= ERR_ALERT | ERR_FATAL;
2575 goto out;
2576 }
2577
2578 cur_arg += 2;
2579 }
2580 else if (!strcmp(args[cur_arg], "inter")) {
2581 const char *err = parse_time_err(args[cur_arg + 1], &val, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02002582
2583 if (err == PARSE_TIME_OVER) {
2584 ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s> of server %s, maximum value is 2147483647 ms (~24.8 days).\n",
2585 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2586 err_code |= ERR_ALERT | ERR_FATAL;
2587 goto out;
2588 }
2589 else if (err == PARSE_TIME_UNDER) {
2590 ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s> of server %s, minimum non-null value is 1 ms.\n",
2591 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2592 err_code |= ERR_ALERT | ERR_FATAL;
2593 goto out;
2594 }
2595 else if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002596 ha_alert("parsing [%s:%d] : unexpected character '%c' in 'inter' argument of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002597 file, linenum, *err, newsrv->id);
2598 err_code |= ERR_ALERT | ERR_FATAL;
2599 goto out;
2600 }
2601 if (val <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002602 ha_alert("parsing [%s:%d]: invalid value %d for argument '%s' of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002603 file, linenum, val, args[cur_arg], newsrv->id);
2604 err_code |= ERR_ALERT | ERR_FATAL;
2605 goto out;
2606 }
2607 newsrv->check.inter = val;
2608 cur_arg += 2;
2609 }
2610 else if (!strcmp(args[cur_arg], "fastinter")) {
2611 const char *err = parse_time_err(args[cur_arg + 1], &val, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02002612
2613 if (err == PARSE_TIME_OVER) {
2614 ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s> of server %s, maximum value is 2147483647 ms (~24.8 days).\n",
2615 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2616 err_code |= ERR_ALERT | ERR_FATAL;
2617 goto out;
2618 }
2619 else if (err == PARSE_TIME_UNDER) {
2620 ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s> of server %s, minimum non-null value is 1 ms.\n",
2621 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2622 err_code |= ERR_ALERT | ERR_FATAL;
2623 goto out;
2624 }
2625 else if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002626 ha_alert("parsing [%s:%d]: unexpected character '%c' in 'fastinter' argument of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002627 file, linenum, *err, newsrv->id);
2628 err_code |= ERR_ALERT | ERR_FATAL;
2629 goto out;
2630 }
2631 if (val <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002632 ha_alert("parsing [%s:%d]: invalid value %d for argument '%s' of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002633 file, linenum, val, args[cur_arg], newsrv->id);
2634 err_code |= ERR_ALERT | ERR_FATAL;
2635 goto out;
2636 }
2637 newsrv->check.fastinter = val;
2638 cur_arg += 2;
2639 }
2640 else if (!strcmp(args[cur_arg], "downinter")) {
2641 const char *err = parse_time_err(args[cur_arg + 1], &val, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02002642
2643 if (err == PARSE_TIME_OVER) {
2644 ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s> of server %s, maximum value is 2147483647 ms (~24.8 days).\n",
2645 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2646 err_code |= ERR_ALERT | ERR_FATAL;
2647 goto out;
2648 }
2649 else if (err == PARSE_TIME_UNDER) {
2650 ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s> of server %s, minimum non-null value is 1 ms.\n",
2651 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2652 err_code |= ERR_ALERT | ERR_FATAL;
2653 goto out;
2654 }
2655 else if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002656 ha_alert("parsing [%s:%d]: unexpected character '%c' in 'downinter' argument of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002657 file, linenum, *err, newsrv->id);
2658 err_code |= ERR_ALERT | ERR_FATAL;
2659 goto out;
2660 }
2661 if (val <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002662 ha_alert("parsing [%s:%d]: invalid value %d for argument '%s' of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002663 file, linenum, val, args[cur_arg], newsrv->id);
2664 err_code |= ERR_ALERT | ERR_FATAL;
2665 goto out;
2666 }
2667 newsrv->check.downinter = val;
2668 cur_arg += 2;
2669 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002670 else if (!strcmp(args[cur_arg], "port")) {
2671 newsrv->check.port = atol(args[cur_arg + 1]);
Baptiste Assmann6b453f12016-08-11 23:12:18 +02002672 newsrv->flags |= SRV_F_CHECKPORT;
Willy Tarreau272adea2014-03-31 10:39:59 +02002673 cur_arg += 2;
2674 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002675 else if (!strcmp(args[cur_arg], "weight")) {
2676 int w;
2677 w = atol(args[cur_arg + 1]);
2678 if (w < 0 || w > SRV_UWGHT_MAX) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002679 ha_alert("parsing [%s:%d] : weight of server %s is not within 0 and %d (%d).\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002680 file, linenum, newsrv->id, SRV_UWGHT_MAX, w);
2681 err_code |= ERR_ALERT | ERR_FATAL;
2682 goto out;
2683 }
2684 newsrv->uweight = newsrv->iweight = w;
2685 cur_arg += 2;
2686 }
2687 else if (!strcmp(args[cur_arg], "minconn")) {
2688 newsrv->minconn = atol(args[cur_arg + 1]);
2689 cur_arg += 2;
2690 }
2691 else if (!strcmp(args[cur_arg], "maxconn")) {
2692 newsrv->maxconn = atol(args[cur_arg + 1]);
2693 cur_arg += 2;
2694 }
2695 else if (!strcmp(args[cur_arg], "maxqueue")) {
2696 newsrv->maxqueue = atol(args[cur_arg + 1]);
2697 cur_arg += 2;
2698 }
2699 else if (!strcmp(args[cur_arg], "slowstart")) {
2700 /* slowstart is stored in seconds */
2701 const char *err = parse_time_err(args[cur_arg + 1], &val, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02002702
2703 if (err == PARSE_TIME_OVER) {
2704 ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s> of server %s, maximum value is 2147483647 ms (~24.8 days).\n",
2705 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2706 err_code |= ERR_ALERT | ERR_FATAL;
2707 goto out;
2708 }
2709 else if (err == PARSE_TIME_UNDER) {
2710 ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s> of server %s, minimum non-null value is 1 ms.\n",
2711 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2712 err_code |= ERR_ALERT | ERR_FATAL;
2713 goto out;
2714 }
2715 else if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002716 ha_alert("parsing [%s:%d] : unexpected character '%c' in 'slowstart' argument of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002717 file, linenum, *err, newsrv->id);
2718 err_code |= ERR_ALERT | ERR_FATAL;
2719 goto out;
2720 }
2721 newsrv->slowstart = (val + 999) / 1000;
2722 cur_arg += 2;
2723 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002724 else if (!strcmp(args[cur_arg], "on-error")) {
2725 if (!strcmp(args[cur_arg + 1], "fastinter"))
2726 newsrv->onerror = HANA_ONERR_FASTINTER;
2727 else if (!strcmp(args[cur_arg + 1], "fail-check"))
2728 newsrv->onerror = HANA_ONERR_FAILCHK;
2729 else if (!strcmp(args[cur_arg + 1], "sudden-death"))
2730 newsrv->onerror = HANA_ONERR_SUDDTH;
2731 else if (!strcmp(args[cur_arg + 1], "mark-down"))
2732 newsrv->onerror = HANA_ONERR_MARKDWN;
2733 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002734 ha_alert("parsing [%s:%d]: '%s' expects one of 'fastinter', "
Willy Tarreau272adea2014-03-31 10:39:59 +02002735 "'fail-check', 'sudden-death' or 'mark-down' but got '%s'\n",
2736 file, linenum, args[cur_arg], args[cur_arg + 1]);
2737 err_code |= ERR_ALERT | ERR_FATAL;
2738 goto out;
2739 }
2740
2741 cur_arg += 2;
2742 }
2743 else if (!strcmp(args[cur_arg], "on-marked-down")) {
2744 if (!strcmp(args[cur_arg + 1], "shutdown-sessions"))
2745 newsrv->onmarkeddown = HANA_ONMARKEDDOWN_SHUTDOWNSESSIONS;
2746 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002747 ha_alert("parsing [%s:%d]: '%s' expects 'shutdown-sessions' but got '%s'\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002748 file, linenum, args[cur_arg], args[cur_arg + 1]);
2749 err_code |= ERR_ALERT | ERR_FATAL;
2750 goto out;
2751 }
2752
2753 cur_arg += 2;
2754 }
2755 else if (!strcmp(args[cur_arg], "on-marked-up")) {
2756 if (!strcmp(args[cur_arg + 1], "shutdown-backup-sessions"))
2757 newsrv->onmarkedup = HANA_ONMARKEDUP_SHUTDOWNBACKUPSESSIONS;
2758 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002759 ha_alert("parsing [%s:%d]: '%s' expects 'shutdown-backup-sessions' but got '%s'\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002760 file, linenum, args[cur_arg], args[cur_arg + 1]);
2761 err_code |= ERR_ALERT | ERR_FATAL;
2762 goto out;
2763 }
2764
2765 cur_arg += 2;
2766 }
2767 else if (!strcmp(args[cur_arg], "error-limit")) {
2768 if (!*args[cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002769 ha_alert("parsing [%s:%d]: '%s' expects an integer argument.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002770 file, linenum, args[cur_arg]);
2771 err_code |= ERR_ALERT | ERR_FATAL;
2772 goto out;
2773 }
2774
2775 newsrv->consecutive_errors_limit = atoi(args[cur_arg + 1]);
2776
2777 if (newsrv->consecutive_errors_limit <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002778 ha_alert("parsing [%s:%d]: %s has to be > 0.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002779 file, linenum, args[cur_arg]);
2780 err_code |= ERR_ALERT | ERR_FATAL;
2781 goto out;
2782 }
2783 cur_arg += 2;
2784 }
Frédéric Lécaille8d083ed2017-04-14 15:19:56 +02002785 else if (!strcmp(args[cur_arg], "usesrc")) { /* address to use outside: needs "source" first */
Christopher Faulet767a84b2017-11-24 16:50:31 +01002786 ha_alert("parsing [%s:%d] : '%s' only allowed after a '%s' statement.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002787 file, linenum, "usesrc", "source");
2788 err_code |= ERR_ALERT | ERR_FATAL;
2789 goto out;
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002790 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002791 else {
2792 static int srv_dumped;
2793 struct srv_kw *kw;
2794 char *err;
2795
2796 kw = srv_find_kw(args[cur_arg]);
2797 if (kw) {
2798 char *err = NULL;
2799 int code;
2800
2801 if (!kw->parse) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002802 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 +02002803 file, linenum, args[0], args[1], args[cur_arg]);
Frédéric Lécailledfacd692017-04-16 17:14:14 +02002804 if (kw->skip != -1)
2805 cur_arg += 1 + kw->skip ;
Willy Tarreau272adea2014-03-31 10:39:59 +02002806 err_code |= ERR_ALERT | ERR_FATAL;
2807 goto out;
2808 }
2809
2810 if (defsrv && !kw->default_ok) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002811 ha_alert("parsing [%s:%d] : '%s %s' : '%s' option is not accepted in default-server sections.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002812 file, linenum, args[0], args[1], args[cur_arg]);
Frédéric Lécailledfacd692017-04-16 17:14:14 +02002813 if (kw->skip != -1)
2814 cur_arg += 1 + kw->skip ;
Willy Tarreau272adea2014-03-31 10:39:59 +02002815 err_code |= ERR_ALERT;
2816 continue;
2817 }
2818
2819 code = kw->parse(args, &cur_arg, curproxy, newsrv, &err);
2820 err_code |= code;
2821
2822 if (code) {
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01002823 display_parser_err(file, linenum, args, cur_arg, &err);
Willy Tarreau272adea2014-03-31 10:39:59 +02002824 if (code & ERR_FATAL) {
2825 free(err);
Frédéric Lécailledfacd692017-04-16 17:14:14 +02002826 if (kw->skip != -1)
2827 cur_arg += 1 + kw->skip;
Willy Tarreau272adea2014-03-31 10:39:59 +02002828 goto out;
2829 }
2830 }
2831 free(err);
Frédéric Lécailledfacd692017-04-16 17:14:14 +02002832 if (kw->skip != -1)
2833 cur_arg += 1 + kw->skip;
Willy Tarreau272adea2014-03-31 10:39:59 +02002834 continue;
2835 }
2836
2837 err = NULL;
2838 if (!srv_dumped) {
2839 srv_dump_kws(&err);
2840 indent_msg(&err, 4);
2841 srv_dumped = 1;
2842 }
2843
Christopher Faulet767a84b2017-11-24 16:50:31 +01002844 ha_alert("parsing [%s:%d] : '%s %s' unknown keyword '%s'.%s%s\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002845 file, linenum, args[0], args[1], args[cur_arg],
2846 err ? " Registered keywords :" : "", err ? err : "");
2847 free(err);
2848
2849 err_code |= ERR_ALERT | ERR_FATAL;
2850 goto out;
2851 }
2852 }
2853
Frédéric Lécaille759ea982017-03-30 17:32:36 +02002854 if (!defsrv)
2855 err_code |= server_finalize_init(file, linenum, args, cur_arg, newsrv, curproxy);
2856 if (err_code & ERR_FATAL)
2857 goto out;
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002858 if (srv_tmpl)
2859 server_template_init(newsrv, curproxy);
Willy Tarreau272adea2014-03-31 10:39:59 +02002860 }
Willy Tarreau07101d52015-09-08 16:16:35 +02002861 free(fqdn);
Willy Tarreau272adea2014-03-31 10:39:59 +02002862 return 0;
2863
2864 out:
Willy Tarreau07101d52015-09-08 16:16:35 +02002865 free(fqdn);
Willy Tarreau272adea2014-03-31 10:39:59 +02002866 free(errmsg);
2867 return err_code;
2868}
2869
Baptiste Assmann19a106d2015-07-08 22:03:56 +02002870/* Returns a pointer to the first server matching either id <id>.
2871 * NULL is returned if no match is found.
2872 * the lookup is performed in the backend <bk>
2873 */
2874struct server *server_find_by_id(struct proxy *bk, int id)
2875{
2876 struct eb32_node *eb32;
2877 struct server *curserver;
2878
2879 if (!bk || (id ==0))
2880 return NULL;
2881
2882 /* <bk> has no backend capabilities, so it can't have a server */
2883 if (!(bk->cap & PR_CAP_BE))
2884 return NULL;
2885
2886 curserver = NULL;
2887
2888 eb32 = eb32_lookup(&bk->conf.used_server_id, id);
2889 if (eb32)
2890 curserver = container_of(eb32, struct server, conf.id);
2891
2892 return curserver;
2893}
2894
2895/* Returns a pointer to the first server matching either name <name>, or id
2896 * if <name> starts with a '#'. NULL is returned if no match is found.
2897 * the lookup is performed in the backend <bk>
2898 */
2899struct server *server_find_by_name(struct proxy *bk, const char *name)
2900{
2901 struct server *curserver;
2902
2903 if (!bk || !name)
2904 return NULL;
2905
2906 /* <bk> has no backend capabilities, so it can't have a server */
2907 if (!(bk->cap & PR_CAP_BE))
2908 return NULL;
2909
2910 curserver = NULL;
2911 if (*name == '#') {
2912 curserver = server_find_by_id(bk, atoi(name + 1));
2913 if (curserver)
2914 return curserver;
2915 }
2916 else {
2917 curserver = bk->srv;
2918
2919 while (curserver && (strcmp(curserver->id, name) != 0))
2920 curserver = curserver->next;
2921
2922 if (curserver)
2923 return curserver;
2924 }
2925
2926 return NULL;
2927}
2928
2929struct server *server_find_best_match(struct proxy *bk, char *name, int id, int *diff)
2930{
2931 struct server *byname;
2932 struct server *byid;
2933
2934 if (!name && !id)
2935 return NULL;
2936
2937 if (diff)
2938 *diff = 0;
2939
2940 byname = byid = NULL;
2941
2942 if (name) {
2943 byname = server_find_by_name(bk, name);
2944 if (byname && (!id || byname->puid == id))
2945 return byname;
2946 }
2947
2948 /* remaining possibilities :
2949 * - name not set
2950 * - name set but not found
2951 * - name found but ID doesn't match
2952 */
2953 if (id) {
2954 byid = server_find_by_id(bk, id);
2955 if (byid) {
2956 if (byname) {
2957 /* use id only if forced by configuration */
2958 if (byid->flags & SRV_F_FORCED_ID) {
2959 if (diff)
2960 *diff |= 2;
2961 return byid;
2962 }
2963 else {
2964 if (diff)
2965 *diff |= 1;
2966 return byname;
2967 }
2968 }
2969
2970 /* remaining possibilities:
2971 * - name not set
2972 * - name set but not found
2973 */
2974 if (name && diff)
2975 *diff |= 2;
2976 return byid;
2977 }
2978
2979 /* id bot found */
2980 if (byname) {
2981 if (diff)
2982 *diff |= 1;
2983 return byname;
2984 }
2985 }
2986
2987 return NULL;
2988}
2989
Willy Tarreau46b7f532018-08-21 11:54:26 +02002990/* Update a server state using the parameters available in the params list.
2991 *
2992 * Grabs the server lock during operation.
2993 */
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002994static void srv_update_state(struct server *srv, int version, char **params)
2995{
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002996 char *p;
Willy Tarreau83061a82018-07-13 11:56:34 +02002997 struct buffer *msg;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002998
2999 /* fields since version 1
3000 * and common to all other upcoming versions
3001 */
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003002 enum srv_state srv_op_state;
3003 enum srv_admin srv_admin_state;
3004 unsigned srv_uweight, srv_iweight;
3005 unsigned long srv_last_time_change;
3006 short srv_check_status;
3007 enum chk_result srv_check_result;
3008 int srv_check_health;
3009 int srv_check_state, srv_agent_state;
3010 int bk_f_forced_id;
3011 int srv_f_forced_id;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003012 int fqdn_set_by_cli;
3013 const char *fqdn;
Frédéric Lécaille31694712017-08-01 08:47:19 +02003014 const char *port_str;
3015 unsigned int port;
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02003016 char *srvrecord;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003017
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003018 fqdn = NULL;
Frédéric Lécaille31694712017-08-01 08:47:19 +02003019 port = 0;
Willy Tarreau31138fa2015-09-29 18:38:47 +02003020 msg = get_trash_chunk();
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003021 switch (version) {
3022 case 1:
3023 /*
3024 * now we can proceed with server's state update:
3025 * srv_addr: params[0]
3026 * srv_op_state: params[1]
3027 * srv_admin_state: params[2]
3028 * srv_uweight: params[3]
3029 * srv_iweight: params[4]
3030 * srv_last_time_change: params[5]
3031 * srv_check_status: params[6]
3032 * srv_check_result: params[7]
3033 * srv_check_health: params[8]
3034 * srv_check_state: params[9]
3035 * srv_agent_state: params[10]
3036 * bk_f_forced_id: params[11]
3037 * srv_f_forced_id: params[12]
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003038 * srv_fqdn: params[13]
Frédéric Lécaille31694712017-08-01 08:47:19 +02003039 * srv_port: params[14]
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02003040 * srvrecord: params[15]
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003041 */
3042
3043 /* validating srv_op_state */
3044 p = NULL;
3045 errno = 0;
3046 srv_op_state = strtol(params[1], &p, 10);
3047 if ((p == params[1]) || errno == EINVAL || errno == ERANGE ||
3048 (srv_op_state != SRV_ST_STOPPED &&
3049 srv_op_state != SRV_ST_STARTING &&
3050 srv_op_state != SRV_ST_RUNNING &&
3051 srv_op_state != SRV_ST_STOPPING)) {
3052 chunk_appendf(msg, ", invalid srv_op_state value '%s'", params[1]);
3053 }
3054
3055 /* validating srv_admin_state */
3056 p = NULL;
3057 errno = 0;
3058 srv_admin_state = strtol(params[2], &p, 10);
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003059 fqdn_set_by_cli = !!(srv_admin_state & SRV_ADMF_HMAINT);
Willy Tarreau757478e2016-11-03 19:22:19 +01003060
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003061 /* inherited statuses will be recomputed later.
3062 * Also disable SRV_ADMF_HMAINT flag (set from stats socket fqdn).
3063 */
3064 srv_admin_state &= ~SRV_ADMF_IDRAIN & ~SRV_ADMF_IMAINT & ~SRV_ADMF_HMAINT;
Willy Tarreau757478e2016-11-03 19:22:19 +01003065
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003066 if ((p == params[2]) || errno == EINVAL || errno == ERANGE ||
3067 (srv_admin_state != 0 &&
3068 srv_admin_state != SRV_ADMF_FMAINT &&
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003069 srv_admin_state != SRV_ADMF_CMAINT &&
3070 srv_admin_state != (SRV_ADMF_CMAINT | SRV_ADMF_FMAINT) &&
Willy Tarreaue1bde142016-11-03 18:33:25 +01003071 srv_admin_state != (SRV_ADMF_CMAINT | SRV_ADMF_FDRAIN) &&
Willy Tarreau757478e2016-11-03 19:22:19 +01003072 srv_admin_state != SRV_ADMF_FDRAIN)) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003073 chunk_appendf(msg, ", invalid srv_admin_state value '%s'", params[2]);
3074 }
3075
3076 /* validating srv_uweight */
3077 p = NULL;
3078 errno = 0;
3079 srv_uweight = strtol(params[3], &p, 10);
Willy Tarreaue1aebb22015-09-29 18:32:57 +02003080 if ((p == params[3]) || errno == EINVAL || errno == ERANGE || (srv_uweight > SRV_UWGHT_MAX))
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003081 chunk_appendf(msg, ", invalid srv_uweight value '%s'", params[3]);
3082
3083 /* validating srv_iweight */
3084 p = NULL;
3085 errno = 0;
3086 srv_iweight = strtol(params[4], &p, 10);
Willy Tarreaue1aebb22015-09-29 18:32:57 +02003087 if ((p == params[4]) || errno == EINVAL || errno == ERANGE || (srv_iweight > SRV_UWGHT_MAX))
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003088 chunk_appendf(msg, ", invalid srv_iweight value '%s'", params[4]);
3089
3090 /* validating srv_last_time_change */
3091 p = NULL;
3092 errno = 0;
3093 srv_last_time_change = strtol(params[5], &p, 10);
3094 if ((p == params[5]) || errno == EINVAL || errno == ERANGE)
3095 chunk_appendf(msg, ", invalid srv_last_time_change value '%s'", params[5]);
3096
3097 /* validating srv_check_status */
3098 p = NULL;
3099 errno = 0;
3100 srv_check_status = strtol(params[6], &p, 10);
3101 if (p == params[6] || errno == EINVAL || errno == ERANGE ||
3102 (srv_check_status >= HCHK_STATUS_SIZE))
3103 chunk_appendf(msg, ", invalid srv_check_status value '%s'", params[6]);
3104
3105 /* validating srv_check_result */
3106 p = NULL;
3107 errno = 0;
3108 srv_check_result = strtol(params[7], &p, 10);
3109 if ((p == params[7]) || errno == EINVAL || errno == ERANGE ||
3110 (srv_check_result != CHK_RES_UNKNOWN &&
3111 srv_check_result != CHK_RES_NEUTRAL &&
3112 srv_check_result != CHK_RES_FAILED &&
3113 srv_check_result != CHK_RES_PASSED &&
3114 srv_check_result != CHK_RES_CONDPASS)) {
3115 chunk_appendf(msg, ", invalid srv_check_result value '%s'", params[7]);
3116 }
3117
3118 /* validating srv_check_health */
3119 p = NULL;
3120 errno = 0;
3121 srv_check_health = strtol(params[8], &p, 10);
3122 if (p == params[8] || errno == EINVAL || errno == ERANGE)
3123 chunk_appendf(msg, ", invalid srv_check_health value '%s'", params[8]);
3124
3125 /* validating srv_check_state */
3126 p = NULL;
3127 errno = 0;
3128 srv_check_state = strtol(params[9], &p, 10);
3129 if (p == params[9] || errno == EINVAL || errno == ERANGE ||
3130 (srv_check_state & ~(CHK_ST_INPROGRESS | CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_PAUSED | CHK_ST_AGENT)))
3131 chunk_appendf(msg, ", invalid srv_check_state value '%s'", params[9]);
3132
3133 /* validating srv_agent_state */
3134 p = NULL;
3135 errno = 0;
3136 srv_agent_state = strtol(params[10], &p, 10);
3137 if (p == params[10] || errno == EINVAL || errno == ERANGE ||
3138 (srv_agent_state & ~(CHK_ST_INPROGRESS | CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_PAUSED | CHK_ST_AGENT)))
3139 chunk_appendf(msg, ", invalid srv_agent_state value '%s'", params[10]);
3140
3141 /* validating bk_f_forced_id */
3142 p = NULL;
3143 errno = 0;
3144 bk_f_forced_id = strtol(params[11], &p, 10);
3145 if (p == params[11] || errno == EINVAL || errno == ERANGE || !((bk_f_forced_id == 0) || (bk_f_forced_id == 1)))
3146 chunk_appendf(msg, ", invalid bk_f_forced_id value '%s'", params[11]);
3147
3148 /* validating srv_f_forced_id */
3149 p = NULL;
3150 errno = 0;
3151 srv_f_forced_id = strtol(params[12], &p, 10);
3152 if (p == params[12] || errno == EINVAL || errno == ERANGE || !((srv_f_forced_id == 0) || (srv_f_forced_id == 1)))
3153 chunk_appendf(msg, ", invalid srv_f_forced_id value '%s'", params[12]);
3154
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003155 /* validating srv_fqdn */
3156 fqdn = params[13];
3157 if (fqdn && *fqdn == '-')
3158 fqdn = NULL;
3159 if (fqdn && (strlen(fqdn) > DNS_MAX_NAME_SIZE || invalid_domainchar(fqdn))) {
3160 chunk_appendf(msg, ", invalid srv_fqdn value '%s'", params[13]);
3161 fqdn = NULL;
3162 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003163
Frédéric Lécaille31694712017-08-01 08:47:19 +02003164 port_str = params[14];
3165 if (port_str) {
3166 port = strl2uic(port_str, strlen(port_str));
3167 if (port > USHRT_MAX) {
3168 chunk_appendf(msg, ", invalid srv_port value '%s'", port_str);
3169 port_str = NULL;
3170 }
3171 }
3172
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02003173 /* SRV record
3174 * NOTE: in HAProxy, SRV records must start with an underscore '_'
3175 */
3176 srvrecord = params[15];
3177 if (srvrecord && *srvrecord != '_')
3178 srvrecord = NULL;
3179
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003180 /* don't apply anything if one error has been detected */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003181 if (msg->data)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003182 goto out;
3183
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003184 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003185 /* recover operational state and apply it to this server
3186 * and all servers tracking this one */
Jérôme Magninf57afa42019-01-20 11:27:40 +01003187 srv->check.health = srv_check_health;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003188 switch (srv_op_state) {
3189 case SRV_ST_STOPPED:
3190 srv->check.health = 0;
Emeric Brun5a133512017-10-19 14:42:30 +02003191 srv_set_stopped(srv, "changed from server-state after a reload", NULL);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003192 break;
3193 case SRV_ST_STARTING:
Jérôme Magninf57afa42019-01-20 11:27:40 +01003194 /* If rise == 1 there is no STARTING state, let's switch to
3195 * RUNNING
3196 */
3197 if (srv->check.rise == 1) {
3198 srv->check.health = srv->check.rise + srv->check.fall - 1;
3199 srv_set_running(srv, "", NULL);
3200 break;
3201 }
3202 if (srv->check.health < 1 || srv->check.health >= srv->check.rise)
3203 srv->check.health = srv->check.rise - 1;
Emeric Brun52a91d32017-08-31 14:41:55 +02003204 srv->next_state = srv_op_state;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003205 break;
3206 case SRV_ST_STOPPING:
Jérôme Magninf57afa42019-01-20 11:27:40 +01003207 /* If fall == 1 there is no STOPPING state, let's switch to
3208 * STOPPED
3209 */
3210 if (srv->check.fall == 1) {
3211 srv->check.health = 0;
3212 srv_set_stopped(srv, "changed from server-state after a reload", NULL);
3213 break;
3214 }
3215 if (srv->check.health < srv->check.rise ||
3216 srv->check.health > srv->check.rise + srv->check.fall - 2)
3217 srv->check.health = srv->check.rise;
Emeric Brun5a133512017-10-19 14:42:30 +02003218 srv_set_stopping(srv, "changed from server-state after a reload", NULL);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003219 break;
3220 case SRV_ST_RUNNING:
3221 srv->check.health = srv->check.rise + srv->check.fall - 1;
Emeric Brun5a133512017-10-19 14:42:30 +02003222 srv_set_running(srv, "", NULL);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003223 break;
3224 }
3225
3226 /* When applying server state, the following rules apply:
3227 * - in case of a configuration change, we apply the setting from the new
3228 * configuration, regardless of old running state
3229 * - if no configuration change, we apply old running state only if old running
3230 * state is different from new configuration state
3231 */
3232 /* configuration has changed */
Emeric Brun52a91d32017-08-31 14:41:55 +02003233 if ((srv_admin_state & SRV_ADMF_CMAINT) != (srv->next_admin & SRV_ADMF_CMAINT)) {
3234 if (srv->next_admin & SRV_ADMF_CMAINT)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003235 srv_adm_set_maint(srv);
3236 else
3237 srv_adm_set_ready(srv);
3238 }
3239 /* configuration is the same, let's compate old running state and new conf state */
3240 else {
Emeric Brun52a91d32017-08-31 14:41:55 +02003241 if (srv_admin_state & SRV_ADMF_FMAINT && !(srv->next_admin & SRV_ADMF_CMAINT))
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003242 srv_adm_set_maint(srv);
Emeric Brun52a91d32017-08-31 14:41:55 +02003243 else if (!(srv_admin_state & SRV_ADMF_FMAINT) && (srv->next_admin & SRV_ADMF_CMAINT))
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003244 srv_adm_set_ready(srv);
3245 }
3246 /* apply drain mode if server is currently enabled */
Emeric Brun52a91d32017-08-31 14:41:55 +02003247 if (!(srv->next_admin & SRV_ADMF_FMAINT) && (srv_admin_state & SRV_ADMF_FDRAIN)) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003248 /* The SRV_ADMF_FDRAIN flag is inherited when srv->iweight is 0
Willy Tarreau22cace22016-11-03 18:19:49 +01003249 * (srv->iweight is the weight set up in configuration).
3250 * There are two possible reasons for FDRAIN to have been present :
3251 * - previous config weight was zero
3252 * - "set server b/s drain" was sent to the CLI
3253 *
3254 * In the first case, we simply want to drop this drain state
3255 * if the new weight is not zero anymore, meaning the administrator
3256 * has intentionally turned the weight back to a positive value to
3257 * enable the server again after an operation. In the second case,
3258 * the drain state was forced on the CLI regardless of the config's
3259 * weight so we don't want a change to the config weight to lose this
3260 * status. What this means is :
3261 * - if previous weight was 0 and new one is >0, drop the DRAIN state.
3262 * - if the previous weight was >0, keep it.
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003263 */
Willy Tarreau22cace22016-11-03 18:19:49 +01003264 if (srv_iweight > 0 || srv->iweight == 0)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003265 srv_adm_set_drain(srv);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003266 }
3267
3268 srv->last_change = date.tv_sec - srv_last_time_change;
3269 srv->check.status = srv_check_status;
3270 srv->check.result = srv_check_result;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003271
3272 /* Only case we want to apply is removing ENABLED flag which could have been
3273 * done by the "disable health" command over the stats socket
3274 */
3275 if ((srv->check.state & CHK_ST_CONFIGURED) &&
3276 (srv_check_state & CHK_ST_CONFIGURED) &&
3277 !(srv_check_state & CHK_ST_ENABLED))
3278 srv->check.state &= ~CHK_ST_ENABLED;
3279
3280 /* Only case we want to apply is removing ENABLED flag which could have been
3281 * done by the "disable agent" command over the stats socket
3282 */
3283 if ((srv->agent.state & CHK_ST_CONFIGURED) &&
3284 (srv_agent_state & CHK_ST_CONFIGURED) &&
3285 !(srv_agent_state & CHK_ST_ENABLED))
3286 srv->agent.state &= ~CHK_ST_ENABLED;
3287
Baptiste Assmann6076d1c2015-09-17 22:53:59 +02003288 /* We want to apply the previous 'running' weight (srv_uweight) only if there
3289 * was no change in the configuration: both previous and new iweight are equals
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003290 *
Baptiste Assmann6076d1c2015-09-17 22:53:59 +02003291 * It means that a configuration file change has precedence over a unix socket change
3292 * for server's weight
3293 *
3294 * by default, HAProxy applies the following weight when parsing the configuration
3295 * srv->uweight = srv->iweight
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003296 */
Baptiste Assmann6076d1c2015-09-17 22:53:59 +02003297 if (srv_iweight == srv->iweight) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003298 srv->uweight = srv_uweight;
3299 }
Willy Tarreau3ff577e2018-08-02 11:48:52 +02003300 server_recalc_eweight(srv, 1);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003301
Willy Tarreaue5a60682016-11-09 14:54:53 +01003302 /* load server IP address */
Daniel Corbett9215ffa2018-05-19 19:43:24 -04003303 if (strcmp(params[0], "-"))
3304 srv->lastaddr = strdup(params[0]);
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003305
3306 if (fqdn && srv->hostname) {
3307 if (!strcmp(srv->hostname, fqdn)) {
3308 /* Here we reset the 'set from stats socket FQDN' flag
3309 * to support such transitions:
3310 * Let's say initial FQDN value is foo1 (in configuration file).
3311 * - FQDN changed from stats socket, from foo1 to foo2 value,
3312 * - FQDN changed again from file configuration (with the same previous value
3313 set from stats socket, from foo1 to foo2 value),
3314 * - reload for any other reason than a FQDN modification,
3315 * the configuration file FQDN matches the fqdn server state file value.
3316 * So we must reset the 'set from stats socket FQDN' flag to be consistent with
Joseph Herlant44466822018-11-15 08:57:51 -08003317 * any further FQDN modification.
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003318 */
Emeric Brun52a91d32017-08-31 14:41:55 +02003319 srv->next_admin &= ~SRV_ADMF_HMAINT;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003320 }
3321 else {
3322 /* If the FDQN has been changed from stats socket,
3323 * apply fqdn state file value (which is the value set
3324 * from stats socket).
Baptiste Assmann13a92322019-06-07 09:40:55 +02003325 * Also ensure the runtime resolver will process this resolution.
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003326 */
3327 if (fqdn_set_by_cli) {
Olivier Houchardd16bfe62017-10-31 15:21:19 +01003328 srv_set_fqdn(srv, fqdn, 0);
Baptiste Assmann13a92322019-06-07 09:40:55 +02003329 srv->flags &= ~SRV_F_NO_RESOLUTION;
Emeric Brun52a91d32017-08-31 14:41:55 +02003330 srv->next_admin |= SRV_ADMF_HMAINT;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003331 }
3332 }
3333 }
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02003334 /* If all the conditions below are validated, this means
3335 * we're evaluating a server managed by SRV resolution
3336 */
3337 else if (fqdn && !srv->hostname && srvrecord) {
3338 int res;
3339
3340 /* we can't apply previous state if SRV record has changed */
3341 if (srv->srvrq && strcmp(srv->srvrq->name, srvrecord) != 0) {
3342 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);
3343 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
3344 goto out;
3345 }
3346
3347 /* create or find a SRV resolution for this srv record */
3348 if (srv->srvrq == NULL && (srv->srvrq = find_srvrq_by_name(srvrecord, srv->proxy)) == NULL)
3349 srv->srvrq = new_dns_srvrq(srv, srvrecord);
3350 if (srv->srvrq == NULL) {
3351 chunk_appendf(msg, ", can't create or find SRV resolution '%s' for server '%s'", srvrecord, srv->id);
3352 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
3353 goto out;
3354 }
3355
3356 /* prepare DNS resolution for this server */
3357 res = srv_prepare_for_resolution(srv, fqdn);
3358 if (res == -1) {
3359 chunk_appendf(msg, ", can't allocate memory for DNS resolution for server '%s'", srv->id);
3360 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
3361 goto out;
3362 }
3363
3364 /* configure check.port accordingly */
3365 if ((srv->check.state & CHK_ST_CONFIGURED) &&
3366 !(srv->flags & SRV_F_CHECKPORT))
3367 srv->check.port = port;
3368
3369 /* Unset SRV_F_MAPPORTS for SRV records.
3370 * SRV_F_MAPPORTS is unfortunately set by parse_server()
3371 * because no ports are provided in the configuration file.
3372 * This is because HAProxy will use the port found into the SRV record.
3373 */
3374 srv->flags &= ~SRV_F_MAPPORTS;
3375 }
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003376
Frédéric Lécaille31694712017-08-01 08:47:19 +02003377 if (port_str)
3378 srv->svc_port = port;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003379 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Frédéric Lécaille31694712017-08-01 08:47:19 +02003380
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003381 break;
3382 default:
3383 chunk_appendf(msg, ", version '%d' not supported", version);
3384 }
3385
3386 out:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003387 if (msg->data) {
Baptiste Assmann0821bb92016-01-21 00:20:50 +01003388 chunk_appendf(msg, "\n");
Christopher Faulet767a84b2017-11-24 16:50:31 +01003389 ha_warning("server-state application failed for server '%s/%s'%s",
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003390 srv->proxy->id, srv->id, msg->area);
Baptiste Assmann0821bb92016-01-21 00:20:50 +01003391 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003392}
3393
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003394
3395/*
3396 * read next line from file <f> and return the server state version if one found.
3397 * If no version is found, then 0 is returned
3398 * Note that this should be the first read on <f>
3399 */
3400static int srv_state_get_version(FILE *f) {
3401 char buf[2];
3402 int ret;
3403
3404 /* first character of first line of the file must contain the version of the export */
3405 if (fgets(buf, 2, f) == NULL) {
3406 return 0;
3407 }
3408
3409 ret = atoi(buf);
3410 if ((ret < SRV_STATE_FILE_VERSION_MIN) ||
3411 (ret > SRV_STATE_FILE_VERSION_MAX))
3412 return 0;
3413
3414 return ret;
3415}
3416
3417
3418/*
3419 * parses server state line stored in <buf> and supposedly in version <version>.
3420 * Set <params> and <srv_params> accordingly.
3421 * In case of error, params[0] is set to NULL.
3422 */
3423static void srv_state_parse_line(char *buf, const int version, char **params, char **srv_params)
3424{
3425 int buflen, arg, srv_arg;
3426 char *cur, *end;
3427
3428 buflen = strlen(buf);
3429 cur = buf;
3430 end = cur + buflen;
3431
3432 /* we need at least one character */
3433 if (buflen == 0) {
3434 params[0] = NULL;
3435 return;
3436 }
3437
3438 /* ignore blank characters at the beginning of the line */
Willy Tarreau90807112020-02-25 08:16:33 +01003439 while (isspace((unsigned char)*cur))
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003440 ++cur;
3441
3442 /* Ignore empty or commented lines */
3443 if (cur == end || *cur == '#') {
3444 params[0] = NULL;
3445 return;
3446 }
3447
3448 /* truncated lines */
3449 if (buf[buflen - 1] != '\n') {
3450 //ha_warning("server-state file '%s': truncated line\n", filepath);
3451 params[0] = NULL;
3452 return;
3453 }
3454
3455 /* Removes trailing '\n' */
3456 buf[buflen - 1] = '\0';
3457
3458 /* we're now ready to move the line into *srv_params[] */
3459 params[0] = cur;
3460 arg = 1;
3461 srv_arg = 0;
3462 while (*cur && arg < SRV_STATE_FILE_MAX_FIELDS) {
Willy Tarreau90807112020-02-25 08:16:33 +01003463 if (isspace((unsigned char)*cur)) {
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003464 *cur = '\0';
3465 ++cur;
Willy Tarreau90807112020-02-25 08:16:33 +01003466 while (isspace((unsigned char)*cur))
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003467 ++cur;
3468 switch (version) {
3469 case 1:
3470 /*
3471 * srv_addr: params[4] => srv_params[0]
3472 * srv_op_state: params[5] => srv_params[1]
3473 * srv_admin_state: params[6] => srv_params[2]
3474 * srv_uweight: params[7] => srv_params[3]
3475 * srv_iweight: params[8] => srv_params[4]
3476 * srv_last_time_change: params[9] => srv_params[5]
3477 * srv_check_status: params[10] => srv_params[6]
3478 * srv_check_result: params[11] => srv_params[7]
3479 * srv_check_health: params[12] => srv_params[8]
3480 * srv_check_state: params[13] => srv_params[9]
3481 * srv_agent_state: params[14] => srv_params[10]
3482 * bk_f_forced_id: params[15] => srv_params[11]
3483 * srv_f_forced_id: params[16] => srv_params[12]
3484 * srv_fqdn: params[17] => srv_params[13]
3485 * srv_port: params[18] => srv_params[14]
3486 * srvrecord: params[19] => srv_params[15]
3487 */
3488 if (arg >= 4) {
3489 srv_params[srv_arg] = cur;
3490 ++srv_arg;
3491 }
3492 break;
3493 }
3494
3495 params[arg] = cur;
3496 ++arg;
3497 }
3498 else {
3499 ++cur;
3500 }
3501 }
3502
3503 /* if line is incomplete line, then ignore it.
3504 * otherwise, update useful flags */
3505 switch (version) {
3506 case 1:
3507 if (arg < SRV_STATE_FILE_NB_FIELDS_VERSION_1) {
3508 params[0] = NULL;
3509 return;
3510 }
3511 break;
3512 }
3513
3514 return;
3515}
3516
3517
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003518/* This function parses all the proxies and only take care of the backends (since we're looking for server)
3519 * For each proxy, it does the following:
3520 * - opens its server state file (either one or local one)
3521 * - read whole file, line by line
3522 * - analyse each line to check if it matches our current backend:
3523 * - backend name matches
3524 * - backend id matches if id is forced and name doesn't match
3525 * - if the server pointed by the line is found, then state is applied
3526 *
3527 * If the running backend uuid or id differs from the state file, then HAProxy reports
3528 * a warning.
Willy Tarreau46b7f532018-08-21 11:54:26 +02003529 *
3530 * Grabs the server's lock via srv_update_state().
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003531 */
3532void apply_server_state(void)
3533{
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003534 char mybuf[SRV_STATE_LINE_MAXLEN];
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003535 char *params[SRV_STATE_FILE_MAX_FIELDS] = {0};
3536 char *srv_params[SRV_STATE_FILE_MAX_FIELDS] = {0};
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003537 int version, global_file_version;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003538 FILE *f;
3539 char *filepath;
3540 char globalfilepath[MAXPATHLEN + 1];
3541 char localfilepath[MAXPATHLEN + 1];
3542 int len, fileopenerr, globalfilepathlen, localfilepathlen;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003543 struct proxy *curproxy, *bk;
3544 struct server *srv;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003545 char *line;
3546 char *bkname, *srvname;
3547 struct state_line *st;
3548 struct ebmb_node *node, *next_node;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003549
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003550
3551 global_file_version = 0;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003552 globalfilepathlen = 0;
3553 /* create the globalfilepath variable */
3554 if (global.server_state_file) {
3555 /* absolute path or no base directory provided */
3556 if ((global.server_state_file[0] == '/') || (!global.server_state_base)) {
3557 len = strlen(global.server_state_file);
3558 if (len > MAXPATHLEN) {
3559 globalfilepathlen = 0;
3560 goto globalfileerror;
3561 }
3562 memcpy(globalfilepath, global.server_state_file, len);
3563 globalfilepath[len] = '\0';
3564 globalfilepathlen = len;
3565 }
3566 else if (global.server_state_base) {
3567 len = strlen(global.server_state_base);
Willy Tarreau5dfb6c42018-10-16 19:26:12 +02003568 if (len > MAXPATHLEN) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003569 globalfilepathlen = 0;
3570 goto globalfileerror;
3571 }
Olivier Houchard17f8b902018-10-16 18:35:01 +02003572 memcpy(globalfilepath, global.server_state_base, len);
Willy Tarreau5dfb6c42018-10-16 19:26:12 +02003573 globalfilepath[len] = 0;
3574 globalfilepathlen = len;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003575
3576 /* append a slash if needed */
3577 if (!globalfilepathlen || globalfilepath[globalfilepathlen - 1] != '/') {
3578 if (globalfilepathlen + 1 > MAXPATHLEN) {
3579 globalfilepathlen = 0;
3580 goto globalfileerror;
3581 }
3582 globalfilepath[globalfilepathlen++] = '/';
3583 }
3584
3585 len = strlen(global.server_state_file);
3586 if (globalfilepathlen + len > MAXPATHLEN) {
3587 globalfilepathlen = 0;
3588 goto globalfileerror;
3589 }
3590 memcpy(globalfilepath + globalfilepathlen, global.server_state_file, len);
3591 globalfilepathlen += len;
3592 globalfilepath[globalfilepathlen++] = 0;
3593 }
3594 }
3595 globalfileerror:
3596 if (globalfilepathlen == 0)
3597 globalfilepath[0] = '\0';
3598
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003599 /* Load global server state in a tree */
3600 if (globalfilepathlen > 0) {
3601 errno = 0;
3602 f = fopen(globalfilepath, "r");
3603 if (errno)
3604 ha_warning("Can't open global server state file '%s': %s\n", globalfilepath, strerror(errno));
Vedran Furac5d486272019-10-16 14:49:38 +02003605 if (!f)
3606 goto out_load_server_state_in_tree;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003607
3608 global_file_version = srv_state_get_version(f);
3609 if (global_file_version == 0)
3610 goto out_load_server_state_in_tree;
3611
3612 while (fgets(mybuf, SRV_STATE_LINE_MAXLEN, f)) {
3613 line = NULL;
3614
3615 line = strdup(mybuf);
3616 if (line == NULL)
3617 continue;
3618
3619 srv_state_parse_line(mybuf, global_file_version, params, srv_params);
3620 if (params[0] == NULL)
Willy Tarreauca7a5af2019-12-20 17:26:27 +01003621 goto nextline;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003622
3623 /* bkname */
3624 bkname = params[1];
3625 /* srvname */
3626 srvname = params[3];
3627
3628 /* key */
3629 chunk_printf(&trash, "%s %s", bkname, srvname);
3630
3631 /* store line in tree */
Willy Tarreau7d6a1fa2019-12-20 17:18:13 +01003632 st = calloc(1, sizeof(*st) + trash.data + 1);
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003633 if (st == NULL) {
3634 goto nextline;
3635 }
Willy Tarreau7d6a1fa2019-12-20 17:18:13 +01003636 memcpy(st->name_name.key, trash.area, trash.data + 1);
Willy Tarreaufd1aa012019-12-20 17:23:40 +01003637 if (ebst_insert(&state_file, &st->name_name) != &st->name_name) {
3638 /* this is a duplicate key, probably a hand-crafted file,
3639 * drop it!
3640 */
3641 goto nextline;
3642 }
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003643
3644 /* save line */
3645 st->line = line;
3646
3647 continue;
3648
3649 nextline:
3650 /* free up memory in case of error during the processing of the line */
3651 free(line);
3652 }
3653 }
3654 out_load_server_state_in_tree:
3655
3656 /* parse all proxies and load states form tree (global file) or from local file */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003657 for (curproxy = proxies_list; curproxy != NULL; curproxy = curproxy->next) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003658 /* servers are only in backends */
3659 if (!(curproxy->cap & PR_CAP_BE))
3660 continue;
3661 fileopenerr = 0;
3662 filepath = NULL;
3663
3664 /* search server state file path and name */
3665 switch (curproxy->load_server_state_from_file) {
3666 /* read servers state from global file */
3667 case PR_SRV_STATE_FILE_GLOBAL:
3668 /* there was an error while generating global server state file path */
3669 if (globalfilepathlen == 0)
3670 continue;
3671 filepath = globalfilepath;
3672 fileopenerr = 1;
3673 break;
3674 /* this backend has its own file */
3675 case PR_SRV_STATE_FILE_LOCAL:
3676 localfilepathlen = 0;
3677 localfilepath[0] = '\0';
3678 len = 0;
3679 /* create the localfilepath variable */
3680 /* absolute path or no base directory provided */
3681 if ((curproxy->server_state_file_name[0] == '/') || (!global.server_state_base)) {
3682 len = strlen(curproxy->server_state_file_name);
3683 if (len > MAXPATHLEN) {
3684 localfilepathlen = 0;
3685 goto localfileerror;
3686 }
3687 memcpy(localfilepath, curproxy->server_state_file_name, len);
3688 localfilepath[len] = '\0';
3689 localfilepathlen = len;
3690 }
3691 else if (global.server_state_base) {
3692 len = strlen(global.server_state_base);
3693 localfilepathlen += len;
3694
3695 if (localfilepathlen > MAXPATHLEN) {
3696 localfilepathlen = 0;
3697 goto localfileerror;
3698 }
Olivier Houchard17f8b902018-10-16 18:35:01 +02003699 memcpy(localfilepath, global.server_state_base, len);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003700 localfilepath[localfilepathlen] = 0;
3701
3702 /* append a slash if needed */
3703 if (!localfilepathlen || localfilepath[localfilepathlen - 1] != '/') {
3704 if (localfilepathlen + 1 > MAXPATHLEN) {
3705 localfilepathlen = 0;
3706 goto localfileerror;
3707 }
3708 localfilepath[localfilepathlen++] = '/';
3709 }
3710
3711 len = strlen(curproxy->server_state_file_name);
3712 if (localfilepathlen + len > MAXPATHLEN) {
3713 localfilepathlen = 0;
3714 goto localfileerror;
3715 }
3716 memcpy(localfilepath + localfilepathlen, curproxy->server_state_file_name, len);
3717 localfilepathlen += len;
3718 localfilepath[localfilepathlen++] = 0;
3719 }
3720 filepath = localfilepath;
3721 localfileerror:
3722 if (localfilepathlen == 0)
3723 localfilepath[0] = '\0';
3724
3725 break;
3726 case PR_SRV_STATE_FILE_NONE:
3727 default:
3728 continue;
3729 }
3730
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003731 /* when global file is used, we get data from the tree
3732 * Note that in such case we don't check backend name neither uuid.
3733 * Backend name can't be wrong since it's used as a key to retrieve the server state
3734 * line from the tree.
3735 */
3736 if (curproxy->load_server_state_from_file == PR_SRV_STATE_FILE_GLOBAL) {
3737 struct server *srv = curproxy->srv;
3738 while (srv) {
3739 struct ebmb_node *node;
3740 struct state_line *st;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003741
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003742 chunk_printf(&trash, "%s %s", curproxy->id, srv->id);
3743 node = ebst_lookup(&state_file, trash.area);
3744 if (!node)
3745 goto next;
Dragan Dosencf4fb032015-11-04 23:03:26 +01003746
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003747 st = container_of(node, struct state_line, name_name);
3748 memcpy(mybuf, st->line, strlen(st->line));
3749 mybuf[strlen(st->line)] = 0;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003750
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003751 srv_state_parse_line(mybuf, global_file_version, params, srv_params);
3752 if (params[0] == NULL)
3753 goto next;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003754
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003755 srv_update_state(srv, global_file_version, srv_params);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003756
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003757 next:
3758 srv = srv->next;
3759 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003760
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003761 continue; /* next proxy in list */
3762 }
3763 else {
3764 /* load 'local' state file */
3765 errno = 0;
3766 f = fopen(filepath, "r");
3767 if (errno && fileopenerr)
3768 ha_warning("Can't open server state file '%s': %s\n", filepath, strerror(errno));
3769 if (!f)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003770 continue;
3771
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003772 mybuf[0] = '\0';
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003773
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003774 /* first character of first line of the file must contain the version of the export */
3775 version = srv_state_get_version(f);
3776 if (version == 0) {
3777 ha_warning("Can't get version of the server state file '%s'\n", filepath);
3778 goto fileclose;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003779 }
3780
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003781 while (fgets(mybuf, SRV_STATE_LINE_MAXLEN, f)) {
3782 int bk_f_forced_id = 0;
3783 int check_id = 0;
3784 int check_name = 0;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003785
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003786 srv_state_parse_line(mybuf, version, params, srv_params);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003787
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003788 if (params[0] == NULL) {
3789 continue;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003790 }
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003791
3792 /* if line is incomplete line, then ignore it.
3793 * otherwise, update useful flags */
3794 switch (version) {
3795 case 1:
3796 bk_f_forced_id = (atoi(params[15]) & PR_O_FORCED_ID);
3797 check_id = (atoi(params[0]) == curproxy->uuid);
3798 check_name = (strcmp(curproxy->id, params[1]) == 0);
3799 break;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003800 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003801
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003802 bk = curproxy;
3803
3804 /* if backend can't be found, let's continue */
3805 if (!check_id && !check_name)
3806 continue;
3807 else if (!check_id && check_name) {
3808 ha_warning("backend ID mismatch: from server state file: '%s', from running config '%d'\n", params[0], bk->uuid);
3809 send_log(bk, LOG_NOTICE, "backend ID mismatch: from server state file: '%s', from running config '%d'\n", params[0], bk->uuid);
3810 }
3811 else if (check_id && !check_name) {
3812 ha_warning("backend name mismatch: from server state file: '%s', from running config '%s'\n", params[1], bk->id);
3813 send_log(bk, LOG_NOTICE, "backend name mismatch: from server state file: '%s', from running config '%s'\n", params[1], bk->id);
3814 /* if name doesn't match, we still want to update curproxy if the backend id
3815 * was forced in previous the previous configuration */
3816 if (!bk_f_forced_id)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003817 continue;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003818 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003819
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003820 /* look for the server by its name: param[3] */
3821 srv = server_find_best_match(bk, params[3], 0, NULL);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003822
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003823 if (!srv) {
3824 /* if no server found, then warning and continue with next line */
3825 ha_warning("can't find server '%s' in backend '%s'\n",
3826 params[3], params[1]);
3827 send_log(bk, LOG_NOTICE, "can't find server '%s' in backend '%s'\n",
3828 params[3], params[1]);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003829 continue;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003830 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003831
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003832 /* now we can proceed with server's state update */
3833 srv_update_state(srv, version, srv_params);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003834 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003835 }
Dragan Dosencf4fb032015-11-04 23:03:26 +01003836fileclose:
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003837 fclose(f);
3838 }
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003839
3840 /* now free memory allocated for the tree */
3841 for (node = ebmb_first(&state_file), next_node = node ? ebmb_next(node) : NULL;
3842 node;
3843 node = next_node, next_node = node ? ebmb_next(node) : NULL) {
3844 st = container_of(node, struct state_line, name_name);
3845 ebmb_delete(&st->name_name);
3846 free(st->line);
3847 free(st);
3848 }
3849
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003850}
3851
Simon Horman7d09b9a2013-02-12 10:45:51 +09003852/*
Baptiste Assmann14e40142015-04-14 01:13:07 +02003853 * update a server's current IP address.
3854 * ip is a pointer to the new IP address, whose address family is ip_sin_family.
3855 * ip is in network format.
3856 * updater is a string which contains an information about the requester of the update.
3857 * updater is used if not NULL.
3858 *
3859 * A log line and a stderr warning message is generated based on server's backend options.
Willy Tarreau46b7f532018-08-21 11:54:26 +02003860 *
3861 * Must be called with the server lock held.
Baptiste Assmann14e40142015-04-14 01:13:07 +02003862 */
Thierry Fournierd35b7a62016-02-24 08:23:22 +01003863int update_server_addr(struct server *s, void *ip, int ip_sin_family, const char *updater)
Baptiste Assmann14e40142015-04-14 01:13:07 +02003864{
3865 /* generates a log line and a warning on stderr */
3866 if (1) {
3867 /* book enough space for both IPv4 and IPv6 */
3868 char oldip[INET6_ADDRSTRLEN];
3869 char newip[INET6_ADDRSTRLEN];
3870
3871 memset(oldip, '\0', INET6_ADDRSTRLEN);
3872 memset(newip, '\0', INET6_ADDRSTRLEN);
3873
3874 /* copy old IP address in a string */
3875 switch (s->addr.ss_family) {
3876 case AF_INET:
3877 inet_ntop(s->addr.ss_family, &((struct sockaddr_in *)&s->addr)->sin_addr, oldip, INET_ADDRSTRLEN);
3878 break;
3879 case AF_INET6:
3880 inet_ntop(s->addr.ss_family, &((struct sockaddr_in6 *)&s->addr)->sin6_addr, oldip, INET6_ADDRSTRLEN);
3881 break;
3882 };
3883
3884 /* copy new IP address in a string */
3885 switch (ip_sin_family) {
3886 case AF_INET:
3887 inet_ntop(ip_sin_family, ip, newip, INET_ADDRSTRLEN);
3888 break;
3889 case AF_INET6:
3890 inet_ntop(ip_sin_family, ip, newip, INET6_ADDRSTRLEN);
3891 break;
3892 };
3893
3894 /* save log line into a buffer */
3895 chunk_printf(&trash, "%s/%s changed its IP from %s to %s by %s",
3896 s->proxy->id, s->id, oldip, newip, updater);
3897
3898 /* write the buffer on stderr */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003899 ha_warning("%s.\n", trash.area);
Baptiste Assmann14e40142015-04-14 01:13:07 +02003900
3901 /* send a log */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003902 send_log(s->proxy, LOG_NOTICE, "%s.\n", trash.area);
Baptiste Assmann14e40142015-04-14 01:13:07 +02003903 }
3904
3905 /* save the new IP family */
3906 s->addr.ss_family = ip_sin_family;
3907 /* save the new IP address */
3908 switch (ip_sin_family) {
3909 case AF_INET:
Willy Tarreaueec1d382016-07-13 11:59:39 +02003910 memcpy(&((struct sockaddr_in *)&s->addr)->sin_addr.s_addr, ip, 4);
Baptiste Assmann14e40142015-04-14 01:13:07 +02003911 break;
3912 case AF_INET6:
3913 memcpy(((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr, ip, 16);
3914 break;
3915 };
Olivier Houchard4e694042017-03-14 20:01:29 +01003916 srv_set_dyncookie(s);
Baptiste Assmann14e40142015-04-14 01:13:07 +02003917
3918 return 0;
3919}
3920
3921/*
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003922 * This function update a server's addr and port only for AF_INET and AF_INET6 families.
3923 *
3924 * Caller can pass its name through <updater> to get it integrated in the response message
3925 * returned by the function.
3926 *
3927 * The function first does the following, in that order:
3928 * - validates the new addr and/or port
3929 * - checks if an update is required (new IP or port is different than current ones)
3930 * - checks the update is allowed:
3931 * - don't switch from/to a family other than AF_INET4 and AF_INET6
3932 * - allow all changes if no CHECKS are configured
3933 * - if CHECK is configured:
3934 * - if switch to port map (SRV_F_MAPPORTS), ensure health check have their own ports
3935 * - applies required changes to both ADDR and PORT if both 'required' and 'allowed'
3936 * conditions are met
Willy Tarreau46b7f532018-08-21 11:54:26 +02003937 *
3938 * Must be called with the server lock held.
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003939 */
3940const char *update_server_addr_port(struct server *s, const char *addr, const char *port, char *updater)
3941{
3942 struct sockaddr_storage sa;
3943 int ret, port_change_required;
3944 char current_addr[INET6_ADDRSTRLEN];
David Carlier327298c2016-11-20 10:42:38 +00003945 uint16_t current_port, new_port;
Willy Tarreau83061a82018-07-13 11:56:34 +02003946 struct buffer *msg;
Olivier Houchard4e694042017-03-14 20:01:29 +01003947 int changed = 0;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003948
3949 msg = get_trash_chunk();
3950 chunk_reset(msg);
3951
3952 if (addr) {
3953 memset(&sa, 0, sizeof(struct sockaddr_storage));
3954 if (str2ip2(addr, &sa, 0) == NULL) {
3955 chunk_printf(msg, "Invalid addr '%s'", addr);
3956 goto out;
3957 }
3958
3959 /* changes are allowed on AF_INET* families only */
3960 if ((sa.ss_family != AF_INET) && (sa.ss_family != AF_INET6)) {
3961 chunk_printf(msg, "Update to families other than AF_INET and AF_INET6 supported only through configuration file");
3962 goto out;
3963 }
3964
3965 /* collecting data currently setup */
3966 memset(current_addr, '\0', sizeof(current_addr));
3967 ret = addr_to_str(&s->addr, current_addr, sizeof(current_addr));
3968 /* changes are allowed on AF_INET* families only */
3969 if ((ret != AF_INET) && (ret != AF_INET6)) {
3970 chunk_printf(msg, "Update for the current server address family is only supported through configuration file");
3971 goto out;
3972 }
3973
3974 /* applying ADDR changes if required and allowed
3975 * ipcmp returns 0 when both ADDR are the same
3976 */
3977 if (ipcmp(&s->addr, &sa) == 0) {
3978 chunk_appendf(msg, "no need to change the addr");
3979 goto port;
3980 }
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003981 ipcpy(&sa, &s->addr);
Olivier Houchard4e694042017-03-14 20:01:29 +01003982 changed = 1;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003983
3984 /* we also need to update check's ADDR only if it uses the server's one */
3985 if ((s->check.state & CHK_ST_CONFIGURED) && (s->flags & SRV_F_CHECKADDR)) {
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003986 ipcpy(&sa, &s->check.addr);
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003987 }
3988
3989 /* we also need to update agent ADDR only if it use the server's one */
3990 if ((s->agent.state & CHK_ST_CONFIGURED) && (s->flags & SRV_F_AGENTADDR)) {
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003991 ipcpy(&sa, &s->agent.addr);
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003992 }
3993
3994 /* update report for caller */
3995 chunk_printf(msg, "IP changed from '%s' to '%s'", current_addr, addr);
3996 }
3997
3998 port:
3999 if (port) {
4000 char sign = '\0';
4001 char *endptr;
4002
4003 if (addr)
4004 chunk_appendf(msg, ", ");
4005
4006 /* collecting data currently setup */
Willy Tarreau04276f32017-01-06 17:41:29 +01004007 current_port = s->svc_port;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02004008
4009 /* check if PORT change is required */
4010 port_change_required = 0;
4011
4012 sign = *port;
Ryabin Sergey77ee7522017-01-11 19:39:55 +04004013 errno = 0;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02004014 new_port = strtol(port, &endptr, 10);
4015 if ((errno != 0) || (port == endptr)) {
4016 chunk_appendf(msg, "problem converting port '%s' to an int", port);
4017 goto out;
4018 }
4019
4020 /* check if caller triggers a port mapped or offset */
4021 if (sign == '-' || (sign == '+')) {
4022 /* check if server currently uses port map */
4023 if (!(s->flags & SRV_F_MAPPORTS)) {
4024 /* switch from fixed port to port map mandatorily triggers
4025 * a port change */
4026 port_change_required = 1;
4027 /* check is configured
4028 * we're switching from a fixed port to a SRV_F_MAPPORTS (mapped) port
4029 * prevent PORT change if check doesn't have it's dedicated port while switching
4030 * to port mapping */
4031 if ((s->check.state & CHK_ST_CONFIGURED) && !(s->flags & SRV_F_CHECKPORT)) {
4032 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.");
4033 goto out;
4034 }
4035 }
4036 /* we're already using port maps */
4037 else {
4038 port_change_required = current_port != new_port;
4039 }
4040 }
4041 /* fixed port */
4042 else {
4043 port_change_required = current_port != new_port;
4044 }
4045
4046 /* applying PORT changes if required and update response message */
4047 if (port_change_required) {
4048 /* apply new port */
Willy Tarreau04276f32017-01-06 17:41:29 +01004049 s->svc_port = new_port;
Olivier Houchard4e694042017-03-14 20:01:29 +01004050 changed = 1;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02004051
4052 /* prepare message */
4053 chunk_appendf(msg, "port changed from '");
4054 if (s->flags & SRV_F_MAPPORTS)
4055 chunk_appendf(msg, "+");
4056 chunk_appendf(msg, "%d' to '", current_port);
4057
4058 if (sign == '-') {
4059 s->flags |= SRV_F_MAPPORTS;
4060 chunk_appendf(msg, "%c", sign);
4061 /* just use for result output */
4062 new_port = -new_port;
4063 }
4064 else if (sign == '+') {
4065 s->flags |= SRV_F_MAPPORTS;
4066 chunk_appendf(msg, "%c", sign);
4067 }
4068 else {
4069 s->flags &= ~SRV_F_MAPPORTS;
4070 }
4071
4072 chunk_appendf(msg, "%d'", new_port);
4073
4074 /* we also need to update health checks port only if it uses server's realport */
4075 if ((s->check.state & CHK_ST_CONFIGURED) && !(s->flags & SRV_F_CHECKPORT)) {
4076 s->check.port = new_port;
4077 }
4078 }
4079 else {
4080 chunk_appendf(msg, "no need to change the port");
4081 }
4082 }
4083
4084out:
Olivier Houchard4e694042017-03-14 20:01:29 +01004085 if (changed)
4086 srv_set_dyncookie(s);
Baptiste Assmannd458adc2016-08-02 08:18:55 +02004087 if (updater)
4088 chunk_appendf(msg, " by '%s'", updater);
4089 chunk_appendf(msg, "\n");
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004090 return msg->area;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02004091}
4092
4093
4094/*
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004095 * update server status based on result of name resolution
4096 * returns:
4097 * 0 if server status is updated
4098 * 1 if server status has not changed
Willy Tarreau46b7f532018-08-21 11:54:26 +02004099 *
4100 * Must be called with the server lock held.
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004101 */
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004102int snr_update_srv_status(struct server *s, int has_no_ip)
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004103{
Christopher Faulet67957bd2017-09-27 11:00:59 +02004104 struct dns_resolvers *resolvers = s->resolvers;
4105 struct dns_resolution *resolution = s->dns_requester->resolution;
4106 int exp;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004107
4108 switch (resolution->status) {
4109 case RSLV_STATUS_NONE:
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004110 /* status when HAProxy has just (re)started.
4111 * Nothing to do, since the task is already automatically started */
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004112 break;
4113
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01004114 case RSLV_STATUS_VALID:
4115 /*
4116 * resume health checks
4117 * server will be turned back on if health check is safe
4118 */
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004119 if (has_no_ip) {
Emeric Brun52a91d32017-08-31 14:41:55 +02004120 if (s->next_admin & SRV_ADMF_RMAINT)
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004121 return 1;
4122 srv_set_admin_flag(s, SRV_ADMF_RMAINT,
4123 "No IP for server ");
Christopher Faulet67957bd2017-09-27 11:00:59 +02004124 return 0;
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004125 }
Christopher Faulet67957bd2017-09-27 11:00:59 +02004126
Emeric Brun52a91d32017-08-31 14:41:55 +02004127 if (!(s->next_admin & SRV_ADMF_RMAINT))
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01004128 return 1;
4129 srv_clr_admin_flag(s, SRV_ADMF_RMAINT);
4130 chunk_printf(&trash, "Server %s/%s administratively READY thanks to valid DNS answer",
4131 s->proxy->id, s->id);
4132
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004133 ha_warning("%s.\n", trash.area);
4134 send_log(s->proxy, LOG_NOTICE, "%s.\n", trash.area);
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01004135 return 0;
4136
4137 case RSLV_STATUS_NX:
4138 /* stop server if resolution is NX for a long enough period */
Christopher Faulet67957bd2017-09-27 11:00:59 +02004139 exp = tick_add(resolution->last_valid, resolvers->hold.nx);
4140 if (!tick_is_expired(exp, now_ms))
4141 break;
4142
4143 if (s->next_admin & SRV_ADMF_RMAINT)
4144 return 1;
4145 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "DNS NX status");
4146 return 0;
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01004147
4148 case RSLV_STATUS_TIMEOUT:
4149 /* stop server if resolution is TIMEOUT for a long enough period */
Christopher Faulet67957bd2017-09-27 11:00:59 +02004150 exp = tick_add(resolution->last_valid, resolvers->hold.timeout);
4151 if (!tick_is_expired(exp, now_ms))
4152 break;
4153
4154 if (s->next_admin & SRV_ADMF_RMAINT)
4155 return 1;
4156 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "DNS timeout status");
4157 return 0;
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01004158
4159 case RSLV_STATUS_REFUSED:
4160 /* stop server if resolution is REFUSED for a long enough period */
Christopher Faulet67957bd2017-09-27 11:00:59 +02004161 exp = tick_add(resolution->last_valid, resolvers->hold.refused);
4162 if (!tick_is_expired(exp, now_ms))
4163 break;
4164
4165 if (s->next_admin & SRV_ADMF_RMAINT)
4166 return 1;
4167 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "DNS refused status");
4168 return 0;
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01004169
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004170 default:
Christopher Faulet67957bd2017-09-27 11:00:59 +02004171 /* stop server if resolution failed for a long enough period */
4172 exp = tick_add(resolution->last_valid, resolvers->hold.other);
4173 if (!tick_is_expired(exp, now_ms))
4174 break;
4175
4176 if (s->next_admin & SRV_ADMF_RMAINT)
4177 return 1;
4178 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "unspecified DNS error");
4179 return 0;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004180 }
4181
4182 return 1;
4183}
4184
4185/*
4186 * Server Name Resolution valid response callback
4187 * It expects:
4188 * - <nameserver>: the name server which answered the valid response
4189 * - <response>: buffer containing a valid DNS response
4190 * - <response_len>: size of <response>
4191 * It performs the following actions:
4192 * - ignore response if current ip found and server family not met
4193 * - update with first new ip found if family is met and current IP is not found
4194 * returns:
4195 * 0 on error
4196 * 1 when no error or safe ignore
Olivier Houchard28381072017-11-06 17:30:28 +01004197 *
4198 * Must be called with server lock held
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004199 */
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004200int snr_resolution_cb(struct dns_requester *requester, struct dns_nameserver *nameserver)
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004201{
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004202 struct server *s = NULL;
4203 struct dns_resolution *resolution = NULL;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004204 void *serverip, *firstip;
4205 short server_sin_family, firstip_sin_family;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004206 int ret;
Willy Tarreau83061a82018-07-13 11:56:34 +02004207 struct buffer *chk = get_trash_chunk();
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004208 int has_no_ip = 0;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004209
Christopher Faulet67957bd2017-09-27 11:00:59 +02004210 s = objt_server(requester->owner);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004211 if (!s)
4212 return 1;
4213
Christopher Faulet67957bd2017-09-27 11:00:59 +02004214 resolution = s->dns_requester->resolution;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004215
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004216 /* initializing variables */
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004217 firstip = NULL; /* pointer to the first valid response found */
4218 /* it will be used as the new IP if a change is required */
4219 firstip_sin_family = AF_UNSPEC;
4220 serverip = NULL; /* current server IP address */
4221
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004222 /* initializing server IP pointer */
4223 server_sin_family = s->addr.ss_family;
4224 switch (server_sin_family) {
4225 case AF_INET:
4226 serverip = &((struct sockaddr_in *)&s->addr)->sin_addr.s_addr;
4227 break;
4228
4229 case AF_INET6:
4230 serverip = &((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr;
4231 break;
4232
Willy Tarreau3acfcd12017-01-06 19:18:32 +01004233 case AF_UNSPEC:
4234 break;
4235
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004236 default:
4237 goto invalid;
4238 }
4239
Baptiste Assmann729c9012017-05-22 15:13:10 +02004240 ret = dns_get_ip_from_response(&resolution->response, &s->dns_opts,
Thierry Fournierada34842016-02-17 21:25:09 +01004241 serverip, server_sin_family, &firstip,
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004242 &firstip_sin_family, s);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004243
4244 switch (ret) {
4245 case DNS_UPD_NO:
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004246 goto update_status;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004247
4248 case DNS_UPD_SRVIP_NOT_FOUND:
4249 goto save_ip;
4250
4251 case DNS_UPD_CNAME:
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004252 goto invalid;
4253
Baptiste Assmann0453a1d2015-09-09 00:51:08 +02004254 case DNS_UPD_NO_IP_FOUND:
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004255 has_no_ip = 1;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004256 goto update_status;
Baptiste Assmann0453a1d2015-09-09 00:51:08 +02004257
Baptiste Assmannfad03182015-10-28 02:03:32 +01004258 case DNS_UPD_NAME_ERROR:
Baptiste Assmannfad03182015-10-28 02:03:32 +01004259 /* update resolution status to OTHER error type */
Christopher Faulet67957bd2017-09-27 11:00:59 +02004260 resolution->status = RSLV_STATUS_OTHER;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004261 goto update_status;
Baptiste Assmannfad03182015-10-28 02:03:32 +01004262
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004263 default:
4264 goto invalid;
4265
4266 }
4267
4268 save_ip:
Christopher Faulet67957bd2017-09-27 11:00:59 +02004269 if (nameserver) {
4270 nameserver->counters.update++;
4271 /* save the first ip we found */
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004272 chunk_printf(chk, "%s/%s", nameserver->resolvers->id, nameserver->id);
Christopher Faulet67957bd2017-09-27 11:00:59 +02004273 }
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004274 else
4275 chunk_printf(chk, "DNS cache");
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004276 update_server_addr(s, firstip, firstip_sin_family, (char *) chk->area);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004277
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004278 update_status:
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004279 snr_update_srv_status(s, has_no_ip);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004280 return 1;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004281
4282 invalid:
Christopher Faulet3bbd65b2017-09-15 11:55:45 +02004283 if (nameserver) {
Christopher Faulet67957bd2017-09-27 11:00:59 +02004284 nameserver->counters.invalid++;
4285 goto update_status;
Christopher Faulet3bbd65b2017-09-15 11:55:45 +02004286 }
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004287 snr_update_srv_status(s, has_no_ip);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004288 return 0;
4289}
4290
4291/*
4292 * Server Name Resolution error management callback
4293 * returns:
4294 * 0 on error
4295 * 1 when no error or safe ignore
Willy Tarreau46b7f532018-08-21 11:54:26 +02004296 *
4297 * Grabs the server's lock.
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004298 */
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004299int snr_resolution_error_cb(struct dns_requester *requester, int error_code)
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004300{
Christopher Faulet67957bd2017-09-27 11:00:59 +02004301 struct server *s;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004302
Christopher Faulet67957bd2017-09-27 11:00:59 +02004303 s = objt_server(requester->owner);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004304 if (!s)
4305 return 1;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004306 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004307 snr_update_srv_status(s, 0);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004308 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004309 return 1;
4310}
4311
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004312/*
4313 * Function to check if <ip> is already affected to a server in the backend
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004314 * which owns <srv> and is up.
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004315 * It returns a pointer to the first server found or NULL if <ip> is not yet
4316 * assigned.
Olivier Houchard28381072017-11-06 17:30:28 +01004317 *
4318 * Must be called with server lock held
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004319 */
4320struct server *snr_check_ip_callback(struct server *srv, void *ip, unsigned char *ip_family)
4321{
4322 struct server *tmpsrv;
4323 struct proxy *be;
4324
4325 if (!srv)
4326 return NULL;
4327
4328 be = srv->proxy;
4329 for (tmpsrv = be->srv; tmpsrv; tmpsrv = tmpsrv->next) {
Emeric Brune9fd6b52017-11-02 17:20:39 +01004330 /* we found the current server is the same, ignore it */
4331 if (srv == tmpsrv)
4332 continue;
4333
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004334 /* We want to compare the IP in the record with the IP of the servers in the
4335 * same backend, only if:
4336 * * DNS resolution is enabled on the server
4337 * * the hostname used for the resolution by our server is the same than the
4338 * one used for the server found in the backend
4339 * * the server found in the backend is not our current server
4340 */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004341 HA_SPIN_LOCK(SERVER_LOCK, &tmpsrv->lock);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004342 if ((tmpsrv->hostname_dn == NULL) ||
4343 (srv->hostname_dn_len != tmpsrv->hostname_dn_len) ||
4344 (strcmp(srv->hostname_dn, tmpsrv->hostname_dn) != 0) ||
Emeric Brune9fd6b52017-11-02 17:20:39 +01004345 (srv->puid == tmpsrv->puid)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004346 HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock);
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004347 continue;
Emeric Brune9fd6b52017-11-02 17:20:39 +01004348 }
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004349
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004350 /* If the server has been taken down, don't consider it */
Emeric Brune9fd6b52017-11-02 17:20:39 +01004351 if (tmpsrv->next_admin & SRV_ADMF_RMAINT) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004352 HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock);
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004353 continue;
Emeric Brune9fd6b52017-11-02 17:20:39 +01004354 }
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004355
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004356 /* At this point, we have 2 different servers using the same DNS hostname
4357 * for their respective resolution.
4358 */
4359 if (*ip_family == tmpsrv->addr.ss_family &&
4360 ((tmpsrv->addr.ss_family == AF_INET &&
4361 memcmp(ip, &((struct sockaddr_in *)&tmpsrv->addr)->sin_addr, 4) == 0) ||
4362 (tmpsrv->addr.ss_family == AF_INET6 &&
4363 memcmp(ip, &((struct sockaddr_in6 *)&tmpsrv->addr)->sin6_addr, 16) == 0))) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004364 HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock);
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004365 return tmpsrv;
4366 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004367 HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock);
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004368 }
4369
Emeric Brune9fd6b52017-11-02 17:20:39 +01004370
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004371 return NULL;
4372}
4373
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004374/* Sets the server's address (srv->addr) from srv->hostname using the libc's
4375 * resolver. This is suited for initial address configuration. Returns 0 on
4376 * success otherwise a non-zero error code. In case of error, *err_code, if
4377 * not NULL, is filled up.
4378 */
4379int srv_set_addr_via_libc(struct server *srv, int *err_code)
4380{
4381 if (str2ip2(srv->hostname, &srv->addr, 1) == NULL) {
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004382 if (err_code)
Willy Tarreau465b6e52016-11-07 19:19:22 +01004383 *err_code |= ERR_WARN;
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004384 return 1;
4385 }
4386 return 0;
4387}
4388
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004389/* Set the server's FDQN (->hostname) from <hostname>.
4390 * Returns -1 if failed, 0 if not.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004391 *
4392 * Must be called with the server lock held.
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004393 */
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004394int srv_set_fqdn(struct server *srv, const char *hostname, int dns_locked)
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004395{
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004396 struct dns_resolution *resolution;
Christopher Faulet67957bd2017-09-27 11:00:59 +02004397 char *hostname_dn;
4398 int hostname_len, hostname_dn_len;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004399
Frédéric Lécaille5afb3cf2018-08-21 15:04:23 +02004400 /* Note that the server lock is already held. */
4401 if (!srv->resolvers)
4402 return -1;
4403
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004404 if (!dns_locked)
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004405 HA_SPIN_LOCK(DNS_LOCK, &srv->resolvers->lock);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004406 /* run time DNS resolution was not active for this server
4407 * and we can't enable it at run time for now.
4408 */
4409 if (!srv->dns_requester)
Christopher Fauletb2812a62017-10-04 16:17:58 +02004410 goto err;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004411
4412 chunk_reset(&trash);
Christopher Faulet67957bd2017-09-27 11:00:59 +02004413 hostname_len = strlen(hostname);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004414 hostname_dn = trash.area;
Christopher Faulet67957bd2017-09-27 11:00:59 +02004415 hostname_dn_len = dns_str_to_dn_label(hostname, hostname_len + 1,
4416 hostname_dn, trash.size);
4417 if (hostname_dn_len == -1)
Christopher Fauletb2812a62017-10-04 16:17:58 +02004418 goto err;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004419
Christopher Faulet67957bd2017-09-27 11:00:59 +02004420 resolution = srv->dns_requester->resolution;
4421 if (resolution &&
4422 resolution->hostname_dn &&
4423 !strcmp(resolution->hostname_dn, hostname_dn))
Christopher Fauletb2812a62017-10-04 16:17:58 +02004424 goto end;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004425
Christopher Faulet67957bd2017-09-27 11:00:59 +02004426 dns_unlink_resolution(srv->dns_requester);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004427
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004428 free(srv->hostname);
4429 free(srv->hostname_dn);
Christopher Faulet67957bd2017-09-27 11:00:59 +02004430 srv->hostname = strdup(hostname);
4431 srv->hostname_dn = strdup(hostname_dn);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004432 srv->hostname_dn_len = hostname_dn_len;
4433 if (!srv->hostname || !srv->hostname_dn)
Christopher Fauletb2812a62017-10-04 16:17:58 +02004434 goto err;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004435
Baptiste Assmann13a92322019-06-07 09:40:55 +02004436 if (srv->flags & SRV_F_NO_RESOLUTION)
4437 goto end;
4438
Olivier Houchard55dcdf42017-11-06 15:15:04 +01004439 if (dns_link_resolution(srv, OBJ_TYPE_SERVER, 1) == -1)
Christopher Fauletb2812a62017-10-04 16:17:58 +02004440 goto err;
4441
4442 end:
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004443 if (!dns_locked)
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004444 HA_SPIN_UNLOCK(DNS_LOCK, &srv->resolvers->lock);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004445 return 0;
Christopher Fauletb2812a62017-10-04 16:17:58 +02004446
4447 err:
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004448 if (!dns_locked)
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004449 HA_SPIN_UNLOCK(DNS_LOCK, &srv->resolvers->lock);
Christopher Fauletb2812a62017-10-04 16:17:58 +02004450 return -1;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004451}
4452
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004453/* Sets the server's address (srv->addr) from srv->lastaddr which was filled
4454 * from the state file. This is suited for initial address configuration.
4455 * Returns 0 on success otherwise a non-zero error code. In case of error,
4456 * *err_code, if not NULL, is filled up.
4457 */
4458static int srv_apply_lastaddr(struct server *srv, int *err_code)
4459{
4460 if (!str2ip2(srv->lastaddr, &srv->addr, 0)) {
4461 if (err_code)
4462 *err_code |= ERR_WARN;
4463 return 1;
4464 }
4465 return 0;
4466}
4467
Willy Tarreau25e51522016-11-04 15:10:17 +01004468/* returns 0 if no error, otherwise a combination of ERR_* flags */
4469static int srv_iterate_initaddr(struct server *srv)
4470{
4471 int return_code = 0;
4472 int err_code;
4473 unsigned int methods;
4474
4475 methods = srv->init_addr_methods;
4476 if (!methods) { // default to "last,libc"
4477 srv_append_initaddr(&methods, SRV_IADDR_LAST);
4478 srv_append_initaddr(&methods, SRV_IADDR_LIBC);
4479 }
4480
Willy Tarreau3eed10e2016-11-07 21:03:16 +01004481 /* "-dr" : always append "none" so that server addresses resolution
4482 * failures are silently ignored, this is convenient to validate some
4483 * configs out of their environment.
4484 */
4485 if (global.tune.options & GTUNE_RESOLVE_DONTFAIL)
4486 srv_append_initaddr(&methods, SRV_IADDR_NONE);
4487
Willy Tarreau25e51522016-11-04 15:10:17 +01004488 while (methods) {
4489 err_code = 0;
4490 switch (srv_get_next_initaddr(&methods)) {
4491 case SRV_IADDR_LAST:
4492 if (!srv->lastaddr)
4493 continue;
4494 if (srv_apply_lastaddr(srv, &err_code) == 0)
Olivier Houchard4e694042017-03-14 20:01:29 +01004495 goto out;
Willy Tarreau25e51522016-11-04 15:10:17 +01004496 return_code |= err_code;
4497 break;
4498
4499 case SRV_IADDR_LIBC:
4500 if (!srv->hostname)
4501 continue;
4502 if (srv_set_addr_via_libc(srv, &err_code) == 0)
Olivier Houchard4e694042017-03-14 20:01:29 +01004503 goto out;
Willy Tarreau25e51522016-11-04 15:10:17 +01004504 return_code |= err_code;
4505 break;
4506
Willy Tarreau37ebe122016-11-04 15:17:58 +01004507 case SRV_IADDR_NONE:
4508 srv_set_admin_flag(srv, SRV_ADMF_RMAINT, NULL);
Willy Tarreau465b6e52016-11-07 19:19:22 +01004509 if (return_code) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01004510 ha_warning("parsing [%s:%d] : 'server %s' : could not resolve address '%s', disabling server.\n",
4511 srv->conf.file, srv->conf.line, srv->id, srv->hostname);
Willy Tarreau465b6e52016-11-07 19:19:22 +01004512 }
Willy Tarreau37ebe122016-11-04 15:17:58 +01004513 return return_code;
4514
Willy Tarreau4310d362016-11-02 15:05:56 +01004515 case SRV_IADDR_IP:
4516 ipcpy(&srv->init_addr, &srv->addr);
4517 if (return_code) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01004518 ha_warning("parsing [%s:%d] : 'server %s' : could not resolve address '%s', falling back to configured address.\n",
4519 srv->conf.file, srv->conf.line, srv->id, srv->hostname);
Willy Tarreau4310d362016-11-02 15:05:56 +01004520 }
Olivier Houchard4e694042017-03-14 20:01:29 +01004521 goto out;
Willy Tarreau4310d362016-11-02 15:05:56 +01004522
Willy Tarreau25e51522016-11-04 15:10:17 +01004523 default: /* unhandled method */
4524 break;
4525 }
4526 }
4527
4528 if (!return_code) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01004529 ha_alert("parsing [%s:%d] : 'server %s' : no method found to resolve address '%s'\n",
Willy Tarreau25e51522016-11-04 15:10:17 +01004530 srv->conf.file, srv->conf.line, srv->id, srv->hostname);
4531 }
Willy Tarreau465b6e52016-11-07 19:19:22 +01004532 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01004533 ha_alert("parsing [%s:%d] : 'server %s' : could not resolve address '%s'.\n",
Willy Tarreau465b6e52016-11-07 19:19:22 +01004534 srv->conf.file, srv->conf.line, srv->id, srv->hostname);
4535 }
Willy Tarreau25e51522016-11-04 15:10:17 +01004536
4537 return_code |= ERR_ALERT | ERR_FATAL;
4538 return return_code;
Olivier Houchard4e694042017-03-14 20:01:29 +01004539out:
4540 srv_set_dyncookie(srv);
4541 return return_code;
Willy Tarreau25e51522016-11-04 15:10:17 +01004542}
4543
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004544/*
4545 * This function parses all backends and all servers within each backend
4546 * and performs servers' addr resolution based on information provided by:
4547 * - configuration file
4548 * - server-state file (states provided by an 'old' haproxy process)
4549 *
4550 * Returns 0 if no error, otherwise, a combination of ERR_ flags.
4551 */
4552int srv_init_addr(void)
4553{
4554 struct proxy *curproxy;
4555 int return_code = 0;
4556
Olivier Houchardfbc74e82017-11-24 16:54:05 +01004557 curproxy = proxies_list;
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004558 while (curproxy) {
4559 struct server *srv;
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004560
4561 /* servers are in backend only */
4562 if (!(curproxy->cap & PR_CAP_BE))
4563 goto srv_init_addr_next;
4564
Willy Tarreau25e51522016-11-04 15:10:17 +01004565 for (srv = curproxy->srv; srv; srv = srv->next)
Willy Tarreau3d609a72017-09-06 14:22:45 +02004566 if (srv->hostname)
4567 return_code |= srv_iterate_initaddr(srv);
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004568
4569 srv_init_addr_next:
4570 curproxy = curproxy->next;
4571 }
4572
4573 return return_code;
4574}
4575
Willy Tarreau46b7f532018-08-21 11:54:26 +02004576/*
4577 * Must be called with the server lock held.
4578 */
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004579const char *update_server_fqdn(struct server *server, const char *fqdn, const char *updater, int dns_locked)
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004580{
4581
Willy Tarreau83061a82018-07-13 11:56:34 +02004582 struct buffer *msg;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004583
4584 msg = get_trash_chunk();
4585 chunk_reset(msg);
4586
Olivier Houchard8da5f982017-08-04 18:35:36 +02004587 if (server->hostname && !strcmp(fqdn, server->hostname)) {
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004588 chunk_appendf(msg, "no need to change the FDQN");
4589 goto out;
4590 }
4591
4592 if (strlen(fqdn) > DNS_MAX_NAME_SIZE || invalid_domainchar(fqdn)) {
4593 chunk_appendf(msg, "invalid fqdn '%s'", fqdn);
4594 goto out;
4595 }
4596
4597 chunk_appendf(msg, "%s/%s changed its FQDN from %s to %s",
4598 server->proxy->id, server->id, server->hostname, fqdn);
4599
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004600 if (srv_set_fqdn(server, fqdn, dns_locked) < 0) {
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004601 chunk_reset(msg);
4602 chunk_appendf(msg, "could not update %s/%s FQDN",
4603 server->proxy->id, server->id);
4604 goto out;
4605 }
4606
4607 /* Flag as FQDN set from stats socket. */
Emeric Brun52a91d32017-08-31 14:41:55 +02004608 server->next_admin |= SRV_ADMF_HMAINT;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004609
4610 out:
4611 if (updater)
4612 chunk_appendf(msg, " by '%s'", updater);
4613 chunk_appendf(msg, "\n");
4614
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004615 return msg->area;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004616}
4617
4618
Willy Tarreau21b069d2016-11-23 17:15:08 +01004619/* Expects to find a backend and a server in <arg> under the form <backend>/<server>,
4620 * and returns the pointer to the server. Otherwise, display adequate error messages
Willy Tarreau3b6e5472016-11-24 15:53:53 +01004621 * 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 +01004622 * used for CLI commands requiring a server name.
4623 * Important: the <arg> is modified to remove the '/'.
4624 */
4625struct server *cli_find_server(struct appctx *appctx, char *arg)
4626{
4627 struct proxy *px;
4628 struct server *sv;
4629 char *line;
4630
4631 /* split "backend/server" and make <line> point to server */
4632 for (line = arg; *line; line++)
4633 if (*line == '/') {
4634 *line++ = '\0';
4635 break;
4636 }
4637
4638 if (!*line || !*arg) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004639 cli_err(appctx, "Require 'backend/server'.\n");
Willy Tarreau21b069d2016-11-23 17:15:08 +01004640 return NULL;
4641 }
4642
4643 if (!get_backend_server(arg, line, &px, &sv)) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004644 cli_err(appctx, px ? "No such server.\n" : "No such backend.\n");
Willy Tarreau21b069d2016-11-23 17:15:08 +01004645 return NULL;
4646 }
4647
4648 if (px->state == PR_STSTOPPED) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004649 cli_err(appctx, "Proxy is disabled.\n");
Willy Tarreau21b069d2016-11-23 17:15:08 +01004650 return NULL;
4651 }
4652
4653 return sv;
4654}
4655
William Lallemand222baf22016-11-19 02:00:33 +01004656
Willy Tarreau46b7f532018-08-21 11:54:26 +02004657/* grabs the server lock */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004658static int cli_parse_set_server(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand222baf22016-11-19 02:00:33 +01004659{
4660 struct server *sv;
4661 const char *warning;
4662
4663 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4664 return 1;
4665
4666 sv = cli_find_server(appctx, args[2]);
4667 if (!sv)
4668 return 1;
4669
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004670 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02004671
William Lallemand222baf22016-11-19 02:00:33 +01004672 if (strcmp(args[3], "weight") == 0) {
4673 warning = server_parse_weight_change_request(sv, args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02004674 if (warning)
4675 cli_err(appctx, warning);
William Lallemand222baf22016-11-19 02:00:33 +01004676 }
4677 else if (strcmp(args[3], "state") == 0) {
4678 if (strcmp(args[4], "ready") == 0)
4679 srv_adm_set_ready(sv);
4680 else if (strcmp(args[4], "drain") == 0)
4681 srv_adm_set_drain(sv);
4682 else if (strcmp(args[4], "maint") == 0)
4683 srv_adm_set_maint(sv);
Willy Tarreau9d008692019-08-09 11:21:01 +02004684 else
4685 cli_err(appctx, "'set server <srv> state' expects 'ready', 'drain' and 'maint'.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004686 }
4687 else if (strcmp(args[3], "health") == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004688 if (sv->track)
4689 cli_err(appctx, "cannot change health on a tracking server.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004690 else if (strcmp(args[4], "up") == 0) {
4691 sv->check.health = sv->check.rise + sv->check.fall - 1;
Emeric Brun5a133512017-10-19 14:42:30 +02004692 srv_set_running(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004693 }
4694 else if (strcmp(args[4], "stopping") == 0) {
4695 sv->check.health = sv->check.rise + sv->check.fall - 1;
Emeric Brun5a133512017-10-19 14:42:30 +02004696 srv_set_stopping(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004697 }
4698 else if (strcmp(args[4], "down") == 0) {
4699 sv->check.health = 0;
Emeric Brun5a133512017-10-19 14:42:30 +02004700 srv_set_stopped(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004701 }
Willy Tarreau9d008692019-08-09 11:21:01 +02004702 else
4703 cli_err(appctx, "'set server <srv> health' expects 'up', 'stopping', or 'down'.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004704 }
4705 else if (strcmp(args[3], "agent") == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004706 if (!(sv->agent.state & CHK_ST_ENABLED))
4707 cli_err(appctx, "agent checks are not enabled on this server.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004708 else if (strcmp(args[4], "up") == 0) {
4709 sv->agent.health = sv->agent.rise + sv->agent.fall - 1;
Emeric Brun5a133512017-10-19 14:42:30 +02004710 srv_set_running(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004711 }
4712 else if (strcmp(args[4], "down") == 0) {
4713 sv->agent.health = 0;
Emeric Brun5a133512017-10-19 14:42:30 +02004714 srv_set_stopped(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004715 }
Willy Tarreau9d008692019-08-09 11:21:01 +02004716 else
4717 cli_err(appctx, "'set server <srv> agent' expects 'up' or 'down'.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004718 }
Misiek2da082d2017-01-09 09:40:42 +01004719 else if (strcmp(args[3], "agent-addr") == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004720 if (!(sv->agent.state & CHK_ST_ENABLED))
4721 cli_err(appctx, "agent checks are not enabled on this server.\n");
4722 else if (str2ip(args[4], &sv->agent.addr) == NULL)
4723 cli_err(appctx, "incorrect addr address given for agent.\n");
Misiek2da082d2017-01-09 09:40:42 +01004724 }
4725 else if (strcmp(args[3], "agent-send") == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004726 if (!(sv->agent.state & CHK_ST_ENABLED))
4727 cli_err(appctx, "agent checks are not enabled on this server.\n");
4728 else {
Misiek2da082d2017-01-09 09:40:42 +01004729 char *nss = strdup(args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02004730 if (!nss)
4731 cli_err(appctx, "cannot allocate memory for new string.\n");
4732 else {
Misiek2da082d2017-01-09 09:40:42 +01004733 free(sv->agent.send_string);
4734 sv->agent.send_string = nss;
4735 sv->agent.send_string_len = strlen(args[4]);
4736 }
4737 }
4738 }
William Lallemand222baf22016-11-19 02:00:33 +01004739 else if (strcmp(args[3], "check-port") == 0) {
4740 int i = 0;
4741 if (strl2irc(args[4], strlen(args[4]), &i) != 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004742 cli_err(appctx, "'set server <srv> check-port' expects an integer as argument.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004743 goto out_unlock;
William Lallemand222baf22016-11-19 02:00:33 +01004744 }
4745 if ((i < 0) || (i > 65535)) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004746 cli_err(appctx, "provided port is not valid.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004747 goto out_unlock;
William Lallemand222baf22016-11-19 02:00:33 +01004748 }
4749 /* prevent the update of port to 0 if MAPPORTS are in use */
4750 if ((sv->flags & SRV_F_MAPPORTS) && (i == 0)) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004751 cli_err(appctx, "can't unset 'port' since MAPPORTS is in use.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004752 goto out_unlock;
William Lallemand222baf22016-11-19 02:00:33 +01004753 }
4754 sv->check.port = i;
Willy Tarreau9d008692019-08-09 11:21:01 +02004755 cli_msg(appctx, LOG_NOTICE, "health check port updated.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004756 }
4757 else if (strcmp(args[3], "addr") == 0) {
4758 char *addr = NULL;
4759 char *port = NULL;
4760 if (strlen(args[4]) == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004761 cli_err(appctx, "set server <b>/<s> addr requires an address and optionally a port.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004762 goto out_unlock;
William Lallemand222baf22016-11-19 02:00:33 +01004763 }
4764 else {
4765 addr = args[4];
4766 }
4767 if (strcmp(args[5], "port") == 0) {
4768 port = args[6];
4769 }
4770 warning = update_server_addr_port(sv, addr, port, "stats socket command");
Willy Tarreau9d008692019-08-09 11:21:01 +02004771 if (warning)
4772 cli_msg(appctx, LOG_WARNING, warning);
William Lallemand222baf22016-11-19 02:00:33 +01004773 srv_clr_admin_flag(sv, SRV_ADMF_RMAINT);
4774 }
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004775 else if (strcmp(args[3], "fqdn") == 0) {
4776 if (!*args[4]) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004777 cli_err(appctx, "set server <b>/<s> fqdn requires a FQDN.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004778 goto out_unlock;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004779 }
Baptiste Assmann13a92322019-06-07 09:40:55 +02004780 /* ensure runtime resolver will process this new fqdn */
4781 if (sv->flags & SRV_F_NO_RESOLUTION) {
4782 sv->flags &= ~SRV_F_NO_RESOLUTION;
4783 }
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004784 warning = update_server_fqdn(sv, args[4], "stats socket command", 0);
Willy Tarreau9d008692019-08-09 11:21:01 +02004785 if (warning)
4786 cli_msg(appctx, LOG_WARNING, warning);
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004787 }
William Lallemand222baf22016-11-19 02:00:33 +01004788 else {
Willy Tarreau9d008692019-08-09 11:21:01 +02004789 cli_err(appctx,
4790 "'set server <srv>' only supports 'agent', 'health', 'state',"
4791 " 'weight', 'addr', 'fqdn' and 'check-port'.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004792 }
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004793 out_unlock:
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004794 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
William Lallemand222baf22016-11-19 02:00:33 +01004795 return 1;
4796}
4797
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004798static int cli_parse_get_weight(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand6b160942016-11-22 12:34:35 +01004799{
4800 struct stream_interface *si = appctx->owner;
4801 struct proxy *px;
4802 struct server *sv;
4803 char *line;
4804
4805
4806 /* split "backend/server" and make <line> point to server */
4807 for (line = args[2]; *line; line++)
4808 if (*line == '/') {
4809 *line++ = '\0';
4810 break;
4811 }
4812
Willy Tarreau9d008692019-08-09 11:21:01 +02004813 if (!*line)
4814 return cli_err(appctx, "Require 'backend/server'.\n");
William Lallemand6b160942016-11-22 12:34:35 +01004815
Willy Tarreau9d008692019-08-09 11:21:01 +02004816 if (!get_backend_server(args[2], line, &px, &sv))
4817 return cli_err(appctx, px ? "No such server.\n" : "No such backend.\n");
William Lallemand6b160942016-11-22 12:34:35 +01004818
4819 /* return server's effective weight at the moment */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004820 snprintf(trash.area, trash.size, "%d (initial %d)\n", sv->uweight,
4821 sv->iweight);
4822 if (ci_putstr(si_ic(si), trash.area) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01004823 si_rx_room_blk(si);
Christopher Faulet90b5abe2016-12-05 14:25:08 +01004824 return 0;
4825 }
William Lallemand6b160942016-11-22 12:34:35 +01004826 return 1;
4827}
4828
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004829/* Parse a "set weight" command.
4830 *
4831 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004832 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004833static int cli_parse_set_weight(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand6b160942016-11-22 12:34:35 +01004834{
4835 struct server *sv;
4836 const char *warning;
4837
4838 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4839 return 1;
4840
4841 sv = cli_find_server(appctx, args[2]);
4842 if (!sv)
4843 return 1;
4844
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004845 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
4846
William Lallemand6b160942016-11-22 12:34:35 +01004847 warning = server_parse_weight_change_request(sv, args[3]);
Willy Tarreau9d008692019-08-09 11:21:01 +02004848 if (warning)
4849 cli_err(appctx, warning);
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004850
4851 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
4852
William Lallemand6b160942016-11-22 12:34:35 +01004853 return 1;
4854}
4855
Willy Tarreau46b7f532018-08-21 11:54:26 +02004856/* parse a "set maxconn server" command. It always returns 1.
4857 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004858 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004859 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004860static int cli_parse_set_maxconn_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreaub8026272016-11-23 11:26:56 +01004861{
4862 struct server *sv;
4863 const char *warning;
4864
4865 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4866 return 1;
4867
4868 sv = cli_find_server(appctx, args[3]);
4869 if (!sv)
4870 return 1;
4871
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004872 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
4873
Willy Tarreaub8026272016-11-23 11:26:56 +01004874 warning = server_parse_maxconn_change_request(sv, args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02004875 if (warning)
4876 cli_err(appctx, warning);
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004877
4878 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
4879
Willy Tarreaub8026272016-11-23 11:26:56 +01004880 return 1;
4881}
William Lallemand6b160942016-11-22 12:34:35 +01004882
Willy Tarreau46b7f532018-08-21 11:54:26 +02004883/* parse a "disable agent" command. It always returns 1.
4884 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004885 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004886 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004887static int cli_parse_disable_agent(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004888{
4889 struct server *sv;
4890
4891 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4892 return 1;
4893
4894 sv = cli_find_server(appctx, args[2]);
4895 if (!sv)
4896 return 1;
4897
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004898 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004899 sv->agent.state &= ~CHK_ST_ENABLED;
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004900 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004901 return 1;
4902}
4903
Willy Tarreau46b7f532018-08-21 11:54:26 +02004904/* parse a "disable health" command. It always returns 1.
4905 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004906 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004907 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004908static int cli_parse_disable_health(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004909{
4910 struct server *sv;
4911
4912 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4913 return 1;
4914
4915 sv = cli_find_server(appctx, args[2]);
4916 if (!sv)
4917 return 1;
4918
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004919 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004920 sv->check.state &= ~CHK_ST_ENABLED;
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004921 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004922 return 1;
4923}
4924
Willy Tarreau46b7f532018-08-21 11:54:26 +02004925/* parse a "disable server" command. It always returns 1.
4926 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004927 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004928 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004929static int cli_parse_disable_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauffb4d582016-11-24 12:47:00 +01004930{
4931 struct server *sv;
4932
4933 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4934 return 1;
4935
4936 sv = cli_find_server(appctx, args[2]);
4937 if (!sv)
4938 return 1;
4939
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004940 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreauffb4d582016-11-24 12:47:00 +01004941 srv_adm_set_maint(sv);
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004942 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreauffb4d582016-11-24 12:47:00 +01004943 return 1;
4944}
4945
Willy Tarreau46b7f532018-08-21 11:54:26 +02004946/* parse a "enable agent" command. It always returns 1.
4947 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004948 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004949 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004950static int cli_parse_enable_agent(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004951{
4952 struct server *sv;
4953
4954 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4955 return 1;
4956
4957 sv = cli_find_server(appctx, args[2]);
4958 if (!sv)
4959 return 1;
4960
Willy Tarreau9d008692019-08-09 11:21:01 +02004961 if (!(sv->agent.state & CHK_ST_CONFIGURED))
4962 return cli_err(appctx, "Agent was not configured on this server, cannot enable.\n");
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004963
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004964 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004965 sv->agent.state |= CHK_ST_ENABLED;
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004966 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004967 return 1;
4968}
4969
Willy Tarreau46b7f532018-08-21 11:54:26 +02004970/* parse a "enable health" command. It always returns 1.
4971 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004972 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004973 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004974static int cli_parse_enable_health(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004975{
4976 struct server *sv;
4977
4978 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4979 return 1;
4980
4981 sv = cli_find_server(appctx, args[2]);
4982 if (!sv)
4983 return 1;
4984
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004985 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004986 sv->check.state |= CHK_ST_ENABLED;
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004987 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004988 return 1;
4989}
4990
Willy Tarreau46b7f532018-08-21 11:54:26 +02004991/* parse a "enable server" command. It always returns 1.
4992 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004993 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004994 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004995static int cli_parse_enable_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauffb4d582016-11-24 12:47:00 +01004996{
4997 struct server *sv;
4998
4999 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
5000 return 1;
5001
5002 sv = cli_find_server(appctx, args[2]);
5003 if (!sv)
5004 return 1;
5005
Willy Tarreau3bcc2692018-08-21 15:35:31 +02005006 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreauffb4d582016-11-24 12:47:00 +01005007 srv_adm_set_ready(sv);
Olivier Houcharde9bad0a2018-01-17 17:39:34 +01005008 if (!(sv->flags & SRV_F_COOKIESET)
5009 && (sv->proxy->ck_opts & PR_CK_DYNAMIC) &&
5010 sv->cookie)
5011 srv_check_for_dup_dyncookie(sv);
Willy Tarreau3bcc2692018-08-21 15:35:31 +02005012 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreauffb4d582016-11-24 12:47:00 +01005013 return 1;
5014}
5015
William Lallemand222baf22016-11-19 02:00:33 +01005016/* register cli keywords */
5017static struct cli_kw_list cli_kws = {{ },{
Willy Tarreau58d9cb72016-11-24 12:56:01 +01005018 { { "disable", "agent", NULL }, "disable agent : disable agent checks (use 'set server' instead)", cli_parse_disable_agent, NULL },
Willy Tarreau2c04eda2016-11-24 12:51:04 +01005019 { { "disable", "health", NULL }, "disable health : disable health checks (use 'set server' instead)", cli_parse_disable_health, NULL },
Willy Tarreauffb4d582016-11-24 12:47:00 +01005020 { { "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 +01005021 { { "enable", "agent", NULL }, "enable agent : enable agent checks (use 'set server' instead)", cli_parse_enable_agent, NULL },
Willy Tarreau2c04eda2016-11-24 12:51:04 +01005022 { { "enable", "health", NULL }, "enable health : enable health checks (use 'set server' instead)", cli_parse_enable_health, NULL },
Willy Tarreauffb4d582016-11-24 12:47:00 +01005023 { { "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 +01005024 { { "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 +01005025 { { "set", "server", NULL }, "set server : change a server's state, weight or address", cli_parse_set_server },
William Lallemand6b160942016-11-22 12:34:35 +01005026 { { "get", "weight", NULL }, "get weight : report a server's current weight", cli_parse_get_weight },
5027 { { "set", "weight", NULL }, "set weight : change a server's weight (deprecated)", cli_parse_set_weight },
5028
William Lallemand222baf22016-11-19 02:00:33 +01005029 {{},}
5030}};
5031
Willy Tarreau0108d902018-11-25 19:14:37 +01005032INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01005033
Emeric Brun64cc49c2017-10-03 14:46:45 +02005034/*
5035 * This function applies server's status changes, it is
5036 * is designed to be called asynchronously.
5037 *
Willy Tarreau46b7f532018-08-21 11:54:26 +02005038 * Must be called with the server lock held.
Emeric Brun64cc49c2017-10-03 14:46:45 +02005039 */
Willy Tarreau3ff577e2018-08-02 11:48:52 +02005040static void srv_update_status(struct server *s)
Emeric Brun64cc49c2017-10-03 14:46:45 +02005041{
5042 struct check *check = &s->check;
5043 int xferred;
5044 struct proxy *px = s->proxy;
5045 int prev_srv_count = s->proxy->srv_bck + s->proxy->srv_act;
5046 int srv_was_stopping = (s->cur_state == SRV_ST_STOPPING) || (s->cur_admin & SRV_ADMF_DRAIN);
5047 int log_level;
Willy Tarreau83061a82018-07-13 11:56:34 +02005048 struct buffer *tmptrash = NULL;
Emeric Brun64cc49c2017-10-03 14:46:45 +02005049
Emeric Brun64cc49c2017-10-03 14:46:45 +02005050 /* If currently main is not set we try to apply pending state changes */
5051 if (!(s->cur_admin & SRV_ADMF_MAINT)) {
5052 int next_admin;
5053
5054 /* Backup next admin */
5055 next_admin = s->next_admin;
5056
5057 /* restore current admin state */
5058 s->next_admin = s->cur_admin;
5059
5060 if ((s->cur_state != SRV_ST_STOPPED) && (s->next_state == SRV_ST_STOPPED)) {
5061 s->last_change = now.tv_sec;
5062 if (s->proxy->lbprm.set_server_status_down)
5063 s->proxy->lbprm.set_server_status_down(s);
5064
5065 if (s->onmarkeddown & HANA_ONMARKEDDOWN_SHUTDOWNSESSIONS)
5066 srv_shutdown_streams(s, SF_ERR_DOWN);
5067
5068 /* we might have streams queued on this server and waiting for
5069 * a connection. Those which are redispatchable will be queued
5070 * to another server or to the proxy itself.
5071 */
5072 xferred = pendconn_redistribute(s);
5073
5074 tmptrash = alloc_trash_chunk();
5075 if (tmptrash) {
5076 chunk_printf(tmptrash,
5077 "%sServer %s/%s is DOWN", s->flags & SRV_F_BACKUP ? "Backup " : "",
5078 s->proxy->id, s->id);
5079
Emeric Brun5a133512017-10-19 14:42:30 +02005080 srv_append_status(tmptrash, s, NULL, xferred, 0);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005081 ha_warning("%s.\n", tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005082
5083 /* we don't send an alert if the server was previously paused */
5084 log_level = srv_was_stopping ? LOG_NOTICE : LOG_ALERT;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005085 send_log(s->proxy, log_level, "%s.\n",
5086 tmptrash->area);
5087 send_email_alert(s, log_level, "%s",
5088 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005089 free_trash_chunk(tmptrash);
5090 tmptrash = NULL;
5091 }
5092 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5093 set_backend_down(s->proxy);
5094
5095 s->counters.down_trans++;
5096 }
5097 else if ((s->cur_state != SRV_ST_STOPPING) && (s->next_state == SRV_ST_STOPPING)) {
5098 s->last_change = now.tv_sec;
5099 if (s->proxy->lbprm.set_server_status_down)
5100 s->proxy->lbprm.set_server_status_down(s);
5101
5102 /* we might have streams queued on this server and waiting for
5103 * a connection. Those which are redispatchable will be queued
5104 * to another server or to the proxy itself.
5105 */
5106 xferred = pendconn_redistribute(s);
5107
5108 tmptrash = alloc_trash_chunk();
5109 if (tmptrash) {
5110 chunk_printf(tmptrash,
5111 "%sServer %s/%s is stopping", s->flags & SRV_F_BACKUP ? "Backup " : "",
5112 s->proxy->id, s->id);
5113
Emeric Brun5a133512017-10-19 14:42:30 +02005114 srv_append_status(tmptrash, s, NULL, xferred, 0);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005115
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005116 ha_warning("%s.\n", tmptrash->area);
5117 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5118 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005119 free_trash_chunk(tmptrash);
5120 tmptrash = NULL;
5121 }
5122
5123 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5124 set_backend_down(s->proxy);
5125 }
5126 else if (((s->cur_state != SRV_ST_RUNNING) && (s->next_state == SRV_ST_RUNNING))
5127 || ((s->cur_state != SRV_ST_STARTING) && (s->next_state == SRV_ST_STARTING))) {
5128 if (s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) {
5129 if (s->proxy->last_change < now.tv_sec) // ignore negative times
5130 s->proxy->down_time += now.tv_sec - s->proxy->last_change;
5131 s->proxy->last_change = now.tv_sec;
5132 }
5133
5134 if (s->next_state == SRV_ST_STOPPED && s->last_change < now.tv_sec) // ignore negative times
5135 s->down_time += now.tv_sec - s->last_change;
5136
5137 s->last_change = now.tv_sec;
5138 if (s->next_state == SRV_ST_STARTING)
5139 task_schedule(s->warmup, tick_add(now_ms, MS_TO_TICKS(MAX(1000, s->slowstart / 20))));
5140
Willy Tarreau3ff577e2018-08-02 11:48:52 +02005141 server_recalc_eweight(s, 0);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005142 /* now propagate the status change to any LB algorithms */
5143 if (px->lbprm.update_server_eweight)
5144 px->lbprm.update_server_eweight(s);
5145 else if (srv_willbe_usable(s)) {
5146 if (px->lbprm.set_server_status_up)
5147 px->lbprm.set_server_status_up(s);
5148 }
5149 else {
5150 if (px->lbprm.set_server_status_down)
5151 px->lbprm.set_server_status_down(s);
5152 }
5153
5154 /* If the server is set with "on-marked-up shutdown-backup-sessions",
5155 * and it's not a backup server and its effective weight is > 0,
5156 * then it can accept new connections, so we shut down all streams
5157 * on all backup servers.
5158 */
5159 if ((s->onmarkedup & HANA_ONMARKEDUP_SHUTDOWNBACKUPSESSIONS) &&
5160 !(s->flags & SRV_F_BACKUP) && s->next_eweight)
5161 srv_shutdown_backup_streams(s->proxy, SF_ERR_UP);
5162
5163 /* check if we can handle some connections queued at the proxy. We
5164 * will take as many as we can handle.
5165 */
5166 xferred = pendconn_grab_from_px(s);
5167
5168 tmptrash = alloc_trash_chunk();
5169 if (tmptrash) {
5170 chunk_printf(tmptrash,
5171 "%sServer %s/%s is UP", s->flags & SRV_F_BACKUP ? "Backup " : "",
5172 s->proxy->id, s->id);
5173
Emeric Brun5a133512017-10-19 14:42:30 +02005174 srv_append_status(tmptrash, s, NULL, xferred, 0);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005175 ha_warning("%s.\n", tmptrash->area);
5176 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5177 tmptrash->area);
5178 send_email_alert(s, LOG_NOTICE, "%s",
5179 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005180 free_trash_chunk(tmptrash);
5181 tmptrash = NULL;
5182 }
5183
5184 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5185 set_backend_down(s->proxy);
5186 }
5187 else if (s->cur_eweight != s->next_eweight) {
5188 /* now propagate the status change to any LB algorithms */
5189 if (px->lbprm.update_server_eweight)
5190 px->lbprm.update_server_eweight(s);
5191 else if (srv_willbe_usable(s)) {
5192 if (px->lbprm.set_server_status_up)
5193 px->lbprm.set_server_status_up(s);
5194 }
5195 else {
5196 if (px->lbprm.set_server_status_down)
5197 px->lbprm.set_server_status_down(s);
5198 }
5199
5200 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5201 set_backend_down(s->proxy);
5202 }
5203
5204 s->next_admin = next_admin;
5205 }
5206
Emeric Brun5a133512017-10-19 14:42:30 +02005207 /* reset operational state change */
5208 *s->op_st_chg.reason = 0;
5209 s->op_st_chg.status = s->op_st_chg.code = -1;
5210 s->op_st_chg.duration = 0;
Emeric Brun64cc49c2017-10-03 14:46:45 +02005211
5212 /* Now we try to apply pending admin changes */
5213
5214 /* Maintenance must also disable health checks */
5215 if (!(s->cur_admin & SRV_ADMF_MAINT) && (s->next_admin & SRV_ADMF_MAINT)) {
5216 if (s->check.state & CHK_ST_ENABLED) {
5217 s->check.state |= CHK_ST_PAUSED;
5218 check->health = 0;
5219 }
5220
5221 if (s->cur_state == SRV_ST_STOPPED) { /* server was already down */
Olivier Houchard796a2b32017-10-24 17:42:47 +02005222 tmptrash = alloc_trash_chunk();
5223 if (tmptrash) {
5224 chunk_printf(tmptrash,
5225 "%sServer %s/%s was DOWN and now enters maintenance%s%s%s",
5226 s->flags & SRV_F_BACKUP ? "Backup " : "", s->proxy->id, s->id,
5227 *(s->adm_st_chg_cause) ? " (" : "", s->adm_st_chg_cause, *(s->adm_st_chg_cause) ? ")" : "");
Emeric Brun64cc49c2017-10-03 14:46:45 +02005228
Olivier Houchard796a2b32017-10-24 17:42:47 +02005229 srv_append_status(tmptrash, s, NULL, -1, (s->next_admin & SRV_ADMF_FMAINT));
Emeric Brun64cc49c2017-10-03 14:46:45 +02005230
Olivier Houchard796a2b32017-10-24 17:42:47 +02005231 if (!(global.mode & MODE_STARTING)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005232 ha_warning("%s.\n", tmptrash->area);
5233 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5234 tmptrash->area);
Olivier Houchard796a2b32017-10-24 17:42:47 +02005235 }
5236 free_trash_chunk(tmptrash);
5237 tmptrash = NULL;
Emeric Brun64cc49c2017-10-03 14:46:45 +02005238 }
Emeric Brun8f298292017-12-06 16:47:17 +01005239 /* commit new admin status */
5240
5241 s->cur_admin = s->next_admin;
Emeric Brun64cc49c2017-10-03 14:46:45 +02005242 }
5243 else { /* server was still running */
5244 check->health = 0; /* failure */
5245 s->last_change = now.tv_sec;
Emeric Brune3114802017-12-21 14:42:26 +01005246
5247 s->next_state = SRV_ST_STOPPED;
Emeric Brun64cc49c2017-10-03 14:46:45 +02005248 if (s->proxy->lbprm.set_server_status_down)
5249 s->proxy->lbprm.set_server_status_down(s);
5250
Emeric Brun64cc49c2017-10-03 14:46:45 +02005251 if (s->onmarkeddown & HANA_ONMARKEDDOWN_SHUTDOWNSESSIONS)
5252 srv_shutdown_streams(s, SF_ERR_DOWN);
5253
5254 /* we might have streams queued on this server and waiting for
5255 * a connection. Those which are redispatchable will be queued
5256 * to another server or to the proxy itself.
5257 */
5258 xferred = pendconn_redistribute(s);
5259
5260 tmptrash = alloc_trash_chunk();
5261 if (tmptrash) {
5262 chunk_printf(tmptrash,
5263 "%sServer %s/%s is going DOWN for maintenance%s%s%s",
5264 s->flags & SRV_F_BACKUP ? "Backup " : "",
5265 s->proxy->id, s->id,
5266 *(s->adm_st_chg_cause) ? " (" : "", s->adm_st_chg_cause, *(s->adm_st_chg_cause) ? ")" : "");
5267
5268 srv_append_status(tmptrash, s, NULL, xferred, (s->next_admin & SRV_ADMF_FMAINT));
5269
5270 if (!(global.mode & MODE_STARTING)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005271 ha_warning("%s.\n", tmptrash->area);
5272 send_log(s->proxy, srv_was_stopping ? LOG_NOTICE : LOG_ALERT, "%s.\n",
5273 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005274 }
5275 free_trash_chunk(tmptrash);
5276 tmptrash = NULL;
5277 }
5278 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5279 set_backend_down(s->proxy);
5280
5281 s->counters.down_trans++;
5282 }
5283 }
5284 else if ((s->cur_admin & SRV_ADMF_MAINT) && !(s->next_admin & SRV_ADMF_MAINT)) {
5285 /* OK here we're leaving maintenance, we have many things to check,
5286 * because the server might possibly be coming back up depending on
5287 * its state. In practice, leaving maintenance means that we should
5288 * immediately turn to UP (more or less the slowstart) under the
5289 * following conditions :
5290 * - server is neither checked nor tracked
5291 * - server tracks another server which is not checked
5292 * - server tracks another server which is already up
5293 * Which sums up as something simpler :
5294 * "either the tracking server is up or the server's checks are disabled
5295 * or up". Otherwise we only re-enable health checks. There's a special
5296 * case associated to the stopping state which can be inherited. Note
5297 * that the server might still be in drain mode, which is naturally dealt
5298 * with by the lower level functions.
5299 */
5300
5301 if (s->check.state & CHK_ST_ENABLED) {
5302 s->check.state &= ~CHK_ST_PAUSED;
5303 check->health = check->rise; /* start OK but check immediately */
5304 }
5305
5306 if ((!s->track || s->track->next_state != SRV_ST_STOPPED) &&
5307 (!(s->agent.state & CHK_ST_ENABLED) || (s->agent.health >= s->agent.rise)) &&
5308 (!(s->check.state & CHK_ST_ENABLED) || (s->check.health >= s->check.rise))) {
5309 if (s->track && s->track->next_state == SRV_ST_STOPPING) {
5310 s->next_state = SRV_ST_STOPPING;
5311 }
5312 else {
5313 s->next_state = SRV_ST_STARTING;
5314 if (s->slowstart > 0)
5315 task_schedule(s->warmup, tick_add(now_ms, MS_TO_TICKS(MAX(1000, s->slowstart / 20))));
5316 else
5317 s->next_state = SRV_ST_RUNNING;
5318 }
5319
5320 }
5321
5322 tmptrash = alloc_trash_chunk();
5323 if (tmptrash) {
5324 if (!(s->next_admin & SRV_ADMF_FMAINT) && (s->cur_admin & SRV_ADMF_FMAINT)) {
5325 chunk_printf(tmptrash,
5326 "%sServer %s/%s is %s/%s (leaving forced maintenance)",
5327 s->flags & SRV_F_BACKUP ? "Backup " : "",
5328 s->proxy->id, s->id,
5329 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP",
5330 (s->next_admin & SRV_ADMF_DRAIN) ? "DRAIN" : "READY");
5331 }
5332 if (!(s->next_admin & SRV_ADMF_RMAINT) && (s->cur_admin & SRV_ADMF_RMAINT)) {
5333 chunk_printf(tmptrash,
5334 "%sServer %s/%s ('%s') is %s/%s (resolves again)",
5335 s->flags & SRV_F_BACKUP ? "Backup " : "",
5336 s->proxy->id, s->id, s->hostname,
5337 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP",
5338 (s->next_admin & SRV_ADMF_DRAIN) ? "DRAIN" : "READY");
5339 }
5340 if (!(s->next_admin & SRV_ADMF_IMAINT) && (s->cur_admin & SRV_ADMF_IMAINT)) {
5341 chunk_printf(tmptrash,
5342 "%sServer %s/%s is %s/%s (leaving maintenance)",
5343 s->flags & SRV_F_BACKUP ? "Backup " : "",
5344 s->proxy->id, s->id,
5345 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP",
5346 (s->next_admin & SRV_ADMF_DRAIN) ? "DRAIN" : "READY");
5347 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005348 ha_warning("%s.\n", tmptrash->area);
5349 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5350 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005351 free_trash_chunk(tmptrash);
5352 tmptrash = NULL;
5353 }
5354
Willy Tarreau3ff577e2018-08-02 11:48:52 +02005355 server_recalc_eweight(s, 0);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005356 /* now propagate the status change to any LB algorithms */
5357 if (px->lbprm.update_server_eweight)
5358 px->lbprm.update_server_eweight(s);
5359 else if (srv_willbe_usable(s)) {
5360 if (px->lbprm.set_server_status_up)
5361 px->lbprm.set_server_status_up(s);
5362 }
5363 else {
5364 if (px->lbprm.set_server_status_down)
5365 px->lbprm.set_server_status_down(s);
5366 }
5367
5368 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5369 set_backend_down(s->proxy);
5370
Willy Tarreau6a78e612018-08-07 10:14:53 +02005371 /* If the server is set with "on-marked-up shutdown-backup-sessions",
5372 * and it's not a backup server and its effective weight is > 0,
5373 * then it can accept new connections, so we shut down all streams
5374 * on all backup servers.
5375 */
5376 if ((s->onmarkedup & HANA_ONMARKEDUP_SHUTDOWNBACKUPSESSIONS) &&
5377 !(s->flags & SRV_F_BACKUP) && s->next_eweight)
5378 srv_shutdown_backup_streams(s->proxy, SF_ERR_UP);
5379
5380 /* check if we can handle some connections queued at the proxy. We
5381 * will take as many as we can handle.
5382 */
5383 xferred = pendconn_grab_from_px(s);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005384 }
5385 else if (s->next_admin & SRV_ADMF_MAINT) {
5386 /* remaining in maintenance mode, let's inform precisely about the
5387 * situation.
5388 */
5389 if (!(s->next_admin & SRV_ADMF_FMAINT) && (s->cur_admin & SRV_ADMF_FMAINT)) {
5390 tmptrash = alloc_trash_chunk();
5391 if (tmptrash) {
5392 chunk_printf(tmptrash,
5393 "%sServer %s/%s is leaving forced maintenance but remains in maintenance",
5394 s->flags & SRV_F_BACKUP ? "Backup " : "",
5395 s->proxy->id, s->id);
5396
5397 if (s->track) /* normally it's mandatory here */
5398 chunk_appendf(tmptrash, " via %s/%s",
5399 s->track->proxy->id, s->track->id);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005400 ha_warning("%s.\n", tmptrash->area);
5401 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5402 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005403 free_trash_chunk(tmptrash);
5404 tmptrash = NULL;
5405 }
5406 }
5407 if (!(s->next_admin & SRV_ADMF_RMAINT) && (s->cur_admin & SRV_ADMF_RMAINT)) {
5408 tmptrash = alloc_trash_chunk();
5409 if (tmptrash) {
5410 chunk_printf(tmptrash,
5411 "%sServer %s/%s ('%s') resolves again but remains in maintenance",
5412 s->flags & SRV_F_BACKUP ? "Backup " : "",
5413 s->proxy->id, s->id, s->hostname);
5414
5415 if (s->track) /* normally it's mandatory here */
5416 chunk_appendf(tmptrash, " via %s/%s",
5417 s->track->proxy->id, s->track->id);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005418 ha_warning("%s.\n", tmptrash->area);
5419 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5420 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005421 free_trash_chunk(tmptrash);
5422 tmptrash = NULL;
5423 }
5424 }
5425 else if (!(s->next_admin & SRV_ADMF_IMAINT) && (s->cur_admin & SRV_ADMF_IMAINT)) {
5426 tmptrash = alloc_trash_chunk();
5427 if (tmptrash) {
5428 chunk_printf(tmptrash,
5429 "%sServer %s/%s remains in forced maintenance",
5430 s->flags & SRV_F_BACKUP ? "Backup " : "",
5431 s->proxy->id, s->id);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005432 ha_warning("%s.\n", tmptrash->area);
5433 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5434 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005435 free_trash_chunk(tmptrash);
5436 tmptrash = NULL;
5437 }
5438 }
5439 /* don't report anything when leaving drain mode and remaining in maintenance */
5440
5441 s->cur_admin = s->next_admin;
5442 }
5443
5444 if (!(s->next_admin & SRV_ADMF_MAINT)) {
5445 if (!(s->cur_admin & SRV_ADMF_DRAIN) && (s->next_admin & SRV_ADMF_DRAIN)) {
5446 /* drain state is applied only if not yet in maint */
5447
5448 s->last_change = now.tv_sec;
5449 if (px->lbprm.set_server_status_down)
5450 px->lbprm.set_server_status_down(s);
5451
5452 /* we might have streams queued on this server and waiting for
5453 * a connection. Those which are redispatchable will be queued
5454 * to another server or to the proxy itself.
5455 */
5456 xferred = pendconn_redistribute(s);
5457
5458 tmptrash = alloc_trash_chunk();
5459 if (tmptrash) {
5460 chunk_printf(tmptrash, "%sServer %s/%s enters drain state%s%s%s",
5461 s->flags & SRV_F_BACKUP ? "Backup " : "", s->proxy->id, s->id,
5462 *(s->adm_st_chg_cause) ? " (" : "", s->adm_st_chg_cause, *(s->adm_st_chg_cause) ? ")" : "");
5463
5464 srv_append_status(tmptrash, s, NULL, xferred, (s->next_admin & SRV_ADMF_FDRAIN));
5465
5466 if (!(global.mode & MODE_STARTING)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005467 ha_warning("%s.\n", tmptrash->area);
5468 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5469 tmptrash->area);
5470 send_email_alert(s, LOG_NOTICE, "%s",
5471 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005472 }
5473 free_trash_chunk(tmptrash);
5474 tmptrash = NULL;
5475 }
5476
5477 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5478 set_backend_down(s->proxy);
5479 }
5480 else if ((s->cur_admin & SRV_ADMF_DRAIN) && !(s->next_admin & SRV_ADMF_DRAIN)) {
5481 /* OK completely leaving drain mode */
5482 if (s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) {
5483 if (s->proxy->last_change < now.tv_sec) // ignore negative times
5484 s->proxy->down_time += now.tv_sec - s->proxy->last_change;
5485 s->proxy->last_change = now.tv_sec;
5486 }
5487
5488 if (s->last_change < now.tv_sec) // ignore negative times
5489 s->down_time += now.tv_sec - s->last_change;
5490 s->last_change = now.tv_sec;
Willy Tarreau3ff577e2018-08-02 11:48:52 +02005491 server_recalc_eweight(s, 0);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005492
5493 tmptrash = alloc_trash_chunk();
5494 if (tmptrash) {
5495 if (!(s->next_admin & SRV_ADMF_FDRAIN)) {
5496 chunk_printf(tmptrash,
5497 "%sServer %s/%s is %s (leaving forced drain)",
5498 s->flags & SRV_F_BACKUP ? "Backup " : "",
5499 s->proxy->id, s->id,
5500 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP");
5501 }
5502 else {
5503 chunk_printf(tmptrash,
5504 "%sServer %s/%s is %s (leaving drain)",
5505 s->flags & SRV_F_BACKUP ? "Backup " : "",
5506 s->proxy->id, s->id,
5507 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP");
5508 if (s->track) /* normally it's mandatory here */
5509 chunk_appendf(tmptrash, " via %s/%s",
5510 s->track->proxy->id, s->track->id);
5511 }
5512
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005513 ha_warning("%s.\n", tmptrash->area);
5514 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5515 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005516 free_trash_chunk(tmptrash);
5517 tmptrash = NULL;
5518 }
5519
5520 /* now propagate the status change to any LB algorithms */
5521 if (px->lbprm.update_server_eweight)
5522 px->lbprm.update_server_eweight(s);
5523 else if (srv_willbe_usable(s)) {
5524 if (px->lbprm.set_server_status_up)
5525 px->lbprm.set_server_status_up(s);
5526 }
5527 else {
5528 if (px->lbprm.set_server_status_down)
5529 px->lbprm.set_server_status_down(s);
5530 }
5531 }
5532 else if ((s->next_admin & SRV_ADMF_DRAIN)) {
5533 /* remaining in drain mode after removing one of its flags */
5534
5535 tmptrash = alloc_trash_chunk();
5536 if (tmptrash) {
5537 if (!(s->next_admin & SRV_ADMF_FDRAIN)) {
5538 chunk_printf(tmptrash,
5539 "%sServer %s/%s is leaving forced drain but remains in drain mode",
5540 s->flags & SRV_F_BACKUP ? "Backup " : "",
5541 s->proxy->id, s->id);
5542
5543 if (s->track) /* normally it's mandatory here */
5544 chunk_appendf(tmptrash, " via %s/%s",
5545 s->track->proxy->id, s->track->id);
5546 }
5547 else {
5548 chunk_printf(tmptrash,
5549 "%sServer %s/%s remains in forced drain mode",
5550 s->flags & SRV_F_BACKUP ? "Backup " : "",
5551 s->proxy->id, s->id);
5552 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005553 ha_warning("%s.\n", tmptrash->area);
5554 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5555 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005556 free_trash_chunk(tmptrash);
5557 tmptrash = NULL;
5558 }
5559
5560 /* commit new admin status */
5561
5562 s->cur_admin = s->next_admin;
5563 }
5564 }
5565
5566 /* Re-set log strings to empty */
Emeric Brun64cc49c2017-10-03 14:46:45 +02005567 *s->adm_st_chg_cause = 0;
5568}
Emeric Brun64cc49c2017-10-03 14:46:45 +02005569
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005570struct task *srv_cleanup_toremove_connections(struct task *task, void *context, unsigned short state)
5571{
5572 struct connection *conn;
5573
Olivier Houchard859dc802019-08-08 15:47:21 +02005574 while ((conn = MT_LIST_POP(&toremove_connections[tid],
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005575 struct connection *, list)) != NULL) {
Christopher Faulet73c12072019-04-08 11:23:22 +02005576 conn->mux->destroy(conn->ctx);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005577 }
5578
5579 return task;
5580}
5581
Willy Tarreau980855b2019-02-07 14:59:29 +01005582struct task *srv_cleanup_idle_connections(struct task *task, void *context, unsigned short state)
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005583{
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005584 struct server *srv;
5585 struct eb32_node *eb;
5586 int i;
5587 unsigned int next_wakeup;
5588 int need_wakeup = 0;
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01005589
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005590 HA_SPIN_LOCK(OTHER_LOCK, &idle_conn_srv_lock);
5591 while (1) {
5592 int srv_is_empty = 1;
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01005593
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005594 eb = eb32_lookup_ge(&idle_conn_srv, now_ms - TIMER_LOOK_BACK);
5595 if (!eb) {
5596 /* we might have reached the end of the tree, typically because
5597 * <now_ms> is in the first half and we're first scanning the last
5598 * half. Let's loop back to the beginning of the tree now.
5599 */
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005600
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005601 eb = eb32_first(&idle_conn_srv);
5602 if (likely(!eb))
5603 break;
5604 }
5605 if (tick_is_lt(now_ms, eb->key)) {
5606 /* timer not expired yet, revisit it later */
5607 next_wakeup = eb->key;
5608 need_wakeup = 1;
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005609 break;
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005610 }
5611 srv = eb32_entry(eb, struct server, idle_node);
5612 for (i = 0; i < global.nbthread; i++) {
5613 int max_conn = (srv->curr_idle_thr[i] / 2) +
5614 (srv->curr_idle_thr[i] & 1);
5615 int j;
5616 int did_remove = 0;
5617
Olivier Houchard4be71902019-07-11 15:49:00 +02005618 HA_SPIN_LOCK(OTHER_LOCK, &toremove_lock[i]);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005619 for (j = 0; j < max_conn; j++) {
Olivier Houcharddc2f2752020-02-13 19:12:07 +01005620 struct connection *conn = MT_LIST_POP(&srv->idle_conns[i], struct connection *, list);
5621 if (!conn)
5622 conn = MT_LIST_POP(&srv->safe_conns[i],
5623 struct connection *, list);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005624 if (!conn)
5625 break;
5626 did_remove = 1;
Olivier Houchard859dc802019-08-08 15:47:21 +02005627 MT_LIST_ADDQ(&toremove_connections[i], (struct mt_list *)&conn->list);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005628 }
Olivier Houchard4be71902019-07-11 15:49:00 +02005629 HA_SPIN_UNLOCK(OTHER_LOCK, &toremove_lock[i]);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005630 if (did_remove && max_conn < srv->curr_idle_thr[i])
5631 srv_is_empty = 0;
5632 if (did_remove)
5633 task_wakeup(idle_conn_cleanup[i], TASK_WOKEN_OTHER);
5634 }
5635 eb32_delete(&srv->idle_node);
5636 if (!srv_is_empty) {
5637 /* There are still more idle connections, add the
5638 * server back in the tree.
5639 */
5640 srv->idle_node.key = tick_add(srv->pool_purge_delay,
5641 now_ms);
5642 eb32_insert(&idle_conn_srv, &srv->idle_node);
5643 }
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005644 }
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005645 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conn_srv_lock);
5646
5647 if (need_wakeup)
5648 task->expire = next_wakeup;
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01005649 else
5650 task->expire = TICK_ETERNITY;
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005651
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005652 return task;
5653}
Olivier Houchard88698d92019-04-16 19:07:22 +02005654
5655/* config parser for global "tune.pool-{low,high}-fd-ratio" */
5656static int cfg_parse_pool_fd_ratio(char **args, int section_type, struct proxy *curpx,
5657 struct proxy *defpx, const char *file, int line,
5658 char **err)
5659{
5660 int arg = -1;
5661
5662 if (too_many_args(1, args, err, NULL))
5663 return -1;
5664
5665 if (*(args[1]) != 0)
5666 arg = atoi(args[1]);
5667
5668 if (arg < 0 || arg > 100) {
5669 memprintf(err, "'%s' expects an integer argument between 0 and 100.", args[0]);
5670 return -1;
5671 }
5672
5673 if (args[0][10] == 'h')
5674 global.tune.pool_high_ratio = arg;
5675 else
5676 global.tune.pool_low_ratio = arg;
5677 return 0;
5678}
5679
5680/* config keyword parsers */
5681static struct cfg_kw_list cfg_kws = {ILH, {
5682 { CFG_GLOBAL, "tune.pool-high-fd-ratio", cfg_parse_pool_fd_ratio },
5683 { CFG_GLOBAL, "tune.pool-low-fd-ratio", cfg_parse_pool_fd_ratio },
5684 { 0, NULL, NULL }
5685}};
5686
5687INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
5688
Baptiste Assmanna68ca962015-04-14 01:15:08 +02005689/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02005690 * Local variables:
5691 * c-indent-level: 8
5692 * c-basic-offset: 8
5693 * End:
5694 */