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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 };
68struct 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 */
78struct eb_root state_file = EB_ROOT;
79
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;
Emmanuel Hocdetf643b802018-02-01 15:20:32 +0100659 } else
660 goto fail;
661 }
662 return 0;
663 fail:
664 if (err)
665 memprintf(err, "'%s' : proxy v2 option not implemented", p);
666 return ERR_ALERT | ERR_FATAL;
667}
668
Frédéric Lécaille547356e2017-03-15 08:55:39 +0100669/* Parse the "observe" server keyword */
670static int srv_parse_observe(char **args, int *cur_arg,
671 struct proxy *curproxy, struct server *newsrv, char **err)
672{
673 char *arg;
674
675 arg = args[*cur_arg + 1];
676 if (!*arg) {
677 memprintf(err, "'%s' expects <mode> as argument.\n", args[*cur_arg]);
678 return ERR_ALERT | ERR_FATAL;
679 }
680
681 if (!strcmp(arg, "none")) {
682 newsrv->observe = HANA_OBS_NONE;
683 }
684 else if (!strcmp(arg, "layer4")) {
685 newsrv->observe = HANA_OBS_LAYER4;
686 }
687 else if (!strcmp(arg, "layer7")) {
688 if (curproxy->mode != PR_MODE_HTTP) {
689 memprintf(err, "'%s' can only be used in http proxies.\n", arg);
690 return ERR_ALERT;
691 }
692 newsrv->observe = HANA_OBS_LAYER7;
693 }
694 else {
695 memprintf(err, "'%s' expects one of 'none', 'layer4', 'layer7' "
696 "but got '%s'\n", args[*cur_arg], arg);
697 return ERR_ALERT | ERR_FATAL;
698 }
699
700 return 0;
701}
702
Frédéric Lécaille16186232017-03-14 16:42:49 +0100703/* Parse the "redir" server keyword */
704static int srv_parse_redir(char **args, int *cur_arg,
705 struct proxy *curproxy, struct server *newsrv, char **err)
706{
707 char *arg;
708
709 arg = args[*cur_arg + 1];
710 if (!*arg) {
711 memprintf(err, "'%s' expects <prefix> as argument.\n", args[*cur_arg]);
712 return ERR_ALERT | ERR_FATAL;
713 }
714
715 free(newsrv->rdr_pfx);
716 newsrv->rdr_pfx = strdup(arg);
717 newsrv->rdr_len = strlen(arg);
718
719 return 0;
720}
721
Frédéric Lécaille31045e42017-03-10 16:40:00 +0100722/* Parse the "send-proxy" server keyword */
723static int srv_parse_send_proxy(char **args, int *cur_arg,
724 struct proxy *curproxy, struct server *newsrv, char **err)
725{
726 return srv_enable_pp_flags(newsrv, SRV_PP_V1);
727}
728
729/* Parse the "send-proxy-v2" server keyword */
730static int srv_parse_send_proxy_v2(char **args, int *cur_arg,
731 struct proxy *curproxy, struct server *newsrv, char **err)
732{
733 return srv_enable_pp_flags(newsrv, SRV_PP_V2);
734}
735
Frédéric Lécailledba97072017-03-17 15:33:50 +0100736
737/* Parse the "source" server keyword */
738static int srv_parse_source(char **args, int *cur_arg,
739 struct proxy *curproxy, struct server *newsrv, char **err)
740{
741 char *errmsg;
742 int port_low, port_high;
743 struct sockaddr_storage *sk;
744 struct protocol *proto;
745
746 errmsg = NULL;
747
748 if (!*args[*cur_arg + 1]) {
749 memprintf(err, "'%s' expects <addr>[:<port>[-<port>]], and optionally '%s' <addr>, "
750 "and '%s' <name> as argument.\n", args[*cur_arg], "usesrc", "interface");
751 goto err;
752 }
753
754 /* 'sk' is statically allocated (no need to be freed). */
755 sk = str2sa_range(args[*cur_arg + 1], NULL, &port_low, &port_high, &errmsg, NULL, NULL, 1);
756 if (!sk) {
757 memprintf(err, "'%s %s' : %s\n", args[*cur_arg], args[*cur_arg + 1], errmsg);
758 goto err;
759 }
760
761 proto = protocol_by_family(sk->ss_family);
762 if (!proto || !proto->connect) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100763 ha_alert("'%s %s' : connect() not supported for this address family.\n",
764 args[*cur_arg], args[*cur_arg + 1]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100765 goto err;
766 }
767
768 newsrv->conn_src.opts |= CO_SRC_BIND;
769 newsrv->conn_src.source_addr = *sk;
770
771 if (port_low != port_high) {
772 int i;
773
774 if (!port_low || !port_high) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100775 ha_alert("'%s' does not support port offsets (found '%s').\n",
776 args[*cur_arg], args[*cur_arg + 1]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100777 goto err;
778 }
779
780 if (port_low <= 0 || port_low > 65535 ||
781 port_high <= 0 || port_high > 65535 ||
782 port_low > port_high) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100783 ha_alert("'%s': invalid source port range %d-%d.\n", args[*cur_arg], port_low, port_high);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100784 goto err;
785 }
786 newsrv->conn_src.sport_range = port_range_alloc_range(port_high - port_low + 1);
787 for (i = 0; i < newsrv->conn_src.sport_range->size; i++)
788 newsrv->conn_src.sport_range->ports[i] = port_low + i;
789 }
790
791 *cur_arg += 2;
792 while (*(args[*cur_arg])) {
793 if (!strcmp(args[*cur_arg], "usesrc")) { /* address to use outside */
794#if defined(CONFIG_HAP_TRANSPARENT)
795 if (!*args[*cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100796 ha_alert("'usesrc' expects <addr>[:<port>], 'client', 'clientip', "
797 "or 'hdr_ip(name,#)' as argument.\n");
Frédéric Lécailledba97072017-03-17 15:33:50 +0100798 goto err;
799 }
800 if (!strcmp(args[*cur_arg + 1], "client")) {
801 newsrv->conn_src.opts &= ~CO_SRC_TPROXY_MASK;
802 newsrv->conn_src.opts |= CO_SRC_TPROXY_CLI;
803 }
804 else if (!strcmp(args[*cur_arg + 1], "clientip")) {
805 newsrv->conn_src.opts &= ~CO_SRC_TPROXY_MASK;
806 newsrv->conn_src.opts |= CO_SRC_TPROXY_CIP;
807 }
808 else if (!strncmp(args[*cur_arg + 1], "hdr_ip(", 7)) {
809 char *name, *end;
810
811 name = args[*cur_arg + 1] + 7;
812 while (isspace(*name))
813 name++;
814
815 end = name;
816 while (*end && !isspace(*end) && *end != ',' && *end != ')')
817 end++;
818
819 newsrv->conn_src.opts &= ~CO_SRC_TPROXY_MASK;
820 newsrv->conn_src.opts |= CO_SRC_TPROXY_DYN;
821 free(newsrv->conn_src.bind_hdr_name);
822 newsrv->conn_src.bind_hdr_name = calloc(1, end - name + 1);
823 newsrv->conn_src.bind_hdr_len = end - name;
824 memcpy(newsrv->conn_src.bind_hdr_name, name, end - name);
825 newsrv->conn_src.bind_hdr_name[end - name] = '\0';
826 newsrv->conn_src.bind_hdr_occ = -1;
827
828 /* now look for an occurrence number */
829 while (isspace(*end))
830 end++;
831 if (*end == ',') {
832 end++;
833 name = end;
834 if (*end == '-')
835 end++;
836 while (isdigit((int)*end))
837 end++;
838 newsrv->conn_src.bind_hdr_occ = strl2ic(name, end - name);
839 }
840
841 if (newsrv->conn_src.bind_hdr_occ < -MAX_HDR_HISTORY) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100842 ha_alert("usesrc hdr_ip(name,num) does not support negative"
843 " occurrences values smaller than %d.\n", MAX_HDR_HISTORY);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100844 goto err;
845 }
846 }
847 else {
848 struct sockaddr_storage *sk;
849 int port1, port2;
850
851 /* 'sk' is statically allocated (no need to be freed). */
852 sk = str2sa_range(args[*cur_arg + 1], NULL, &port1, &port2, &errmsg, NULL, NULL, 1);
853 if (!sk) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100854 ha_alert("'%s %s' : %s\n", args[*cur_arg], args[*cur_arg + 1], errmsg);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100855 goto err;
856 }
857
858 proto = protocol_by_family(sk->ss_family);
859 if (!proto || !proto->connect) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100860 ha_alert("'%s %s' : connect() not supported for this address family.\n",
861 args[*cur_arg], args[*cur_arg + 1]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100862 goto err;
863 }
864
865 if (port1 != port2) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100866 ha_alert("'%s' : port ranges and offsets are not allowed in '%s'\n",
867 args[*cur_arg], args[*cur_arg + 1]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100868 goto err;
869 }
870 newsrv->conn_src.tproxy_addr = *sk;
871 newsrv->conn_src.opts |= CO_SRC_TPROXY_ADDR;
872 }
873 global.last_checks |= LSTCHK_NETADM;
874 *cur_arg += 2;
875 continue;
876#else /* no TPROXY support */
Christopher Faulet767a84b2017-11-24 16:50:31 +0100877 ha_alert("'usesrc' not allowed here because support for TPROXY was not compiled in.\n");
Frédéric Lécailledba97072017-03-17 15:33:50 +0100878 goto err;
879#endif /* defined(CONFIG_HAP_TRANSPARENT) */
880 } /* "usesrc" */
881
882 if (!strcmp(args[*cur_arg], "interface")) { /* specifically bind to this interface */
883#ifdef SO_BINDTODEVICE
884 if (!*args[*cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100885 ha_alert("'%s' : missing interface name.\n", args[0]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100886 goto err;
887 }
888 free(newsrv->conn_src.iface_name);
889 newsrv->conn_src.iface_name = strdup(args[*cur_arg + 1]);
890 newsrv->conn_src.iface_len = strlen(newsrv->conn_src.iface_name);
891 global.last_checks |= LSTCHK_NETADM;
892#else
Christopher Faulet767a84b2017-11-24 16:50:31 +0100893 ha_alert("'%s' : '%s' option not implemented.\n", args[0], args[*cur_arg]);
Frédéric Lécailledba97072017-03-17 15:33:50 +0100894 goto err;
895#endif
896 *cur_arg += 2;
897 continue;
898 }
899 /* this keyword in not an option of "source" */
900 break;
901 } /* while */
902
903 return 0;
904
905 err:
906 free(errmsg);
907 return ERR_ALERT | ERR_FATAL;
908}
909
Frédéric Lécaillef9bc1d62017-03-10 15:50:49 +0100910/* Parse the "stick" server keyword */
911static int srv_parse_stick(char **args, int *cur_arg,
912 struct proxy *curproxy, struct server *newsrv, char **err)
913{
914 newsrv->flags &= ~SRV_F_NON_STICK;
915 return 0;
916}
917
Frédéric Lécaille67e0e612017-03-14 15:21:31 +0100918/* Parse the "track" server keyword */
919static int srv_parse_track(char **args, int *cur_arg,
920 struct proxy *curproxy, struct server *newsrv, char **err)
921{
922 char *arg;
923
924 arg = args[*cur_arg + 1];
925 if (!*arg) {
926 memprintf(err, "'track' expects [<proxy>/]<server> as argument.\n");
927 return ERR_ALERT | ERR_FATAL;
928 }
929
930 free(newsrv->trackit);
931 newsrv->trackit = strdup(arg);
932
933 return 0;
Alexander Liu2a54bb72019-05-22 19:44:48 +0800934}
935
936/* Parse the "socks4" server keyword */
937static int srv_parse_socks4(char **args, int *cur_arg,
938 struct proxy *curproxy, struct server *newsrv, char **err)
939{
940 char *errmsg;
941 int port_low, port_high;
942 struct sockaddr_storage *sk;
943 struct protocol *proto;
944
945 errmsg = NULL;
946
947 if (!*args[*cur_arg + 1]) {
948 memprintf(err, "'%s' expects <addr>:<port> as argument.\n", args[*cur_arg]);
949 goto err;
950 }
951
952 /* 'sk' is statically allocated (no need to be freed). */
953 sk = str2sa_range(args[*cur_arg + 1], NULL, &port_low, &port_high, &errmsg, NULL, NULL, 1);
954 if (!sk) {
955 memprintf(err, "'%s %s' : %s\n", args[*cur_arg], args[*cur_arg + 1], errmsg);
956 goto err;
957 }
958
959 proto = protocol_by_family(sk->ss_family);
960 if (!proto || !proto->connect) {
961 ha_alert("'%s %s' : connect() not supported for this address family.\n", args[*cur_arg], args[*cur_arg + 1]);
962 goto err;
963 }
964
965 newsrv->flags |= SRV_F_SOCKS4_PROXY;
966 newsrv->socks4_addr = *sk;
967
968 if (port_low != port_high) {
969 ha_alert("'%s' does not support port offsets (found '%s').\n", args[*cur_arg], args[*cur_arg + 1]);
970 goto err;
971 }
972
973 if (!port_low) {
974 ha_alert("'%s': invalid port range %d-%d.\n", args[*cur_arg], port_low, port_high);
975 goto err;
976 }
977
978 return 0;
979
980 err:
981 free(errmsg);
982 return ERR_ALERT | ERR_FATAL;
Frédéric Lécaille67e0e612017-03-14 15:21:31 +0100983}
984
Frédéric Lécailledba97072017-03-17 15:33:50 +0100985
Willy Tarreau034c88c2017-01-23 23:36:45 +0100986/* parse the "tfo" server keyword */
987static int srv_parse_tfo(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
988{
989 newsrv->flags |= SRV_F_FASTOPEN;
990 return 0;
991}
992
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200993/* Shutdown all connections of a server. The caller must pass a termination
Willy Tarreaue7dff022015-04-03 01:14:29 +0200994 * code in <why>, which must be one of SF_ERR_* indicating the reason for the
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200995 * shutdown.
Willy Tarreau46b7f532018-08-21 11:54:26 +0200996 *
997 * Must be called with the server lock held.
Willy Tarreau4aac7db2014-05-16 11:48:10 +0200998 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200999void srv_shutdown_streams(struct server *srv, int why)
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001000{
Willy Tarreau87b09662015-04-03 00:22:06 +02001001 struct stream *stream, *stream_bck;
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001002
Willy Tarreau87b09662015-04-03 00:22:06 +02001003 list_for_each_entry_safe(stream, stream_bck, &srv->actconns, by_srv)
1004 if (stream->srv_conn == srv)
1005 stream_shutdown(stream, why);
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001006}
1007
1008/* Shutdown all connections of all backup servers of a proxy. The caller must
Willy Tarreaue7dff022015-04-03 01:14:29 +02001009 * pass a termination code in <why>, which must be one of SF_ERR_* indicating
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001010 * the reason for the shutdown.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001011 *
1012 * Must be called with the server lock held.
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001013 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001014void srv_shutdown_backup_streams(struct proxy *px, int why)
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001015{
1016 struct server *srv;
1017
1018 for (srv = px->srv; srv != NULL; srv = srv->next)
1019 if (srv->flags & SRV_F_BACKUP)
Willy Tarreau87b09662015-04-03 00:22:06 +02001020 srv_shutdown_streams(srv, why);
Willy Tarreau4aac7db2014-05-16 11:48:10 +02001021}
1022
Willy Tarreaubda92272014-05-20 21:55:30 +02001023/* Appends some information to a message string related to a server going UP or
1024 * DOWN. If both <forced> and <reason> are null and the server tracks another
1025 * one, a "via" information will be provided to know where the status came from.
Emeric Brun5a133512017-10-19 14:42:30 +02001026 * If <check> is non-null, an entire string describing the check result will be
1027 * appended after a comma and a space (eg: to report some information from the
1028 * check that changed the state). In the other case, the string will be built
1029 * using the check results stored into the struct server if present.
1030 * If <xferred> is non-negative, some information about requeued sessions are
Willy Tarreaubda92272014-05-20 21:55:30 +02001031 * provided.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001032 *
1033 * Must be called with the server lock held.
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001034 */
Willy Tarreau83061a82018-07-13 11:56:34 +02001035void srv_append_status(struct buffer *msg, struct server *s,
1036 struct check *check, int xferred, int forced)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001037{
Emeric Brun5a133512017-10-19 14:42:30 +02001038 short status = s->op_st_chg.status;
1039 short code = s->op_st_chg.code;
1040 long duration = s->op_st_chg.duration;
1041 char *desc = s->op_st_chg.reason;
1042
1043 if (check) {
1044 status = check->status;
1045 code = check->code;
1046 duration = check->duration;
1047 desc = check->desc;
1048 }
1049
1050 if (status != -1) {
1051 chunk_appendf(msg, ", reason: %s", get_check_status_description(status));
1052
1053 if (status >= HCHK_STATUS_L57DATA)
1054 chunk_appendf(msg, ", code: %d", code);
1055
1056 if (desc && *desc) {
Willy Tarreau83061a82018-07-13 11:56:34 +02001057 struct buffer src;
Emeric Brun5a133512017-10-19 14:42:30 +02001058
1059 chunk_appendf(msg, ", info: \"");
1060
1061 chunk_initlen(&src, desc, 0, strlen(desc));
1062 chunk_asciiencode(msg, &src, '"');
1063
1064 chunk_appendf(msg, "\"");
1065 }
1066
1067 if (duration >= 0)
1068 chunk_appendf(msg, ", check duration: %ldms", duration);
1069 }
1070 else if (desc && *desc) {
1071 chunk_appendf(msg, ", %s", desc);
1072 }
1073 else if (!forced && s->track) {
Willy Tarreaubda92272014-05-20 21:55:30 +02001074 chunk_appendf(msg, " via %s/%s", s->track->proxy->id, s->track->id);
Emeric Brun5a133512017-10-19 14:42:30 +02001075 }
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001076
1077 if (xferred >= 0) {
Emeric Brun52a91d32017-08-31 14:41:55 +02001078 if (s->next_state == SRV_ST_STOPPED)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001079 chunk_appendf(msg, ". %d active and %d backup servers left.%s"
1080 " %d sessions active, %d requeued, %d remaining in queue",
1081 s->proxy->srv_act, s->proxy->srv_bck,
1082 (s->proxy->srv_bck && !s->proxy->srv_act) ? " Running on backup." : "",
1083 s->cur_sess, xferred, s->nbpend);
1084 else
1085 chunk_appendf(msg, ". %d active and %d backup servers online.%s"
1086 " %d sessions requeued, %d total in queue",
1087 s->proxy->srv_act, s->proxy->srv_bck,
1088 (s->proxy->srv_bck && !s->proxy->srv_act) ? " Running on backup." : "",
1089 xferred, s->nbpend);
1090 }
1091}
1092
Emeric Brun5a133512017-10-19 14:42:30 +02001093/* Marks server <s> down, regardless of its checks' statuses. The server is
1094 * registered in a list to postpone the counting of the remaining servers on
1095 * the proxy and transfers queued streams whenever possible to other servers at
1096 * a sync point. Maintenance servers are ignored. It stores the <reason> if
1097 * non-null as the reason for going down or the available data from the check
1098 * struct to recompute this reason later.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001099 *
1100 * Must be called with the server lock held.
Willy Tarreaue7d1ef12014-05-20 22:25:12 +02001101 */
Emeric Brun5a133512017-10-19 14:42:30 +02001102void srv_set_stopped(struct server *s, const char *reason, struct check *check)
Willy Tarreaue7d1ef12014-05-20 22:25:12 +02001103{
1104 struct server *srv;
Willy Tarreaue7d1ef12014-05-20 22:25:12 +02001105
Emeric Brun64cc49c2017-10-03 14:46:45 +02001106 if ((s->cur_admin & SRV_ADMF_MAINT) || s->next_state == SRV_ST_STOPPED)
Willy Tarreaue7d1ef12014-05-20 22:25:12 +02001107 return;
1108
Emeric Brun52a91d32017-08-31 14:41:55 +02001109 s->next_state = SRV_ST_STOPPED;
Emeric Brun5a133512017-10-19 14:42:30 +02001110 *s->op_st_chg.reason = 0;
1111 s->op_st_chg.status = -1;
1112 if (reason) {
1113 strlcpy2(s->op_st_chg.reason, reason, sizeof(s->op_st_chg.reason));
1114 }
1115 else if (check) {
Willy Tarreau358847f2017-11-20 21:33:21 +01001116 strlcpy2(s->op_st_chg.reason, check->desc, sizeof(s->op_st_chg.reason));
Emeric Brun5a133512017-10-19 14:42:30 +02001117 s->op_st_chg.code = check->code;
1118 s->op_st_chg.status = check->status;
1119 s->op_st_chg.duration = check->duration;
1120 }
Willy Tarreaue7d1ef12014-05-20 22:25:12 +02001121
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001122 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001123 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001124
Emeric Brun9f0b4582017-10-23 14:39:51 +02001125 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001126 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Emeric Brun5a133512017-10-19 14:42:30 +02001127 srv_set_stopped(srv, NULL, NULL);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001128 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001129 }
Willy Tarreaue7d1ef12014-05-20 22:25:12 +02001130}
1131
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001132/* Marks server <s> up regardless of its checks' statuses and provided it isn't
Emeric Brun5a133512017-10-19 14:42:30 +02001133 * in maintenance. The server is registered in a list to postpone the counting
1134 * of the remaining servers on the proxy and tries to grab requests from the
1135 * proxy at a sync point. Maintenance servers are ignored. It stores the
1136 * <reason> if non-null as the reason for going down or the available data
1137 * from the check struct to recompute this reason later.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001138 *
1139 * Must be called with the server lock held.
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001140 */
Emeric Brun5a133512017-10-19 14:42:30 +02001141void srv_set_running(struct server *s, const char *reason, struct check *check)
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001142{
1143 struct server *srv;
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001144
Emeric Brun64cc49c2017-10-03 14:46:45 +02001145 if (s->cur_admin & SRV_ADMF_MAINT)
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001146 return;
1147
Emeric Brun52a91d32017-08-31 14:41:55 +02001148 if (s->next_state == SRV_ST_STARTING || s->next_state == SRV_ST_RUNNING)
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001149 return;
1150
Emeric Brun52a91d32017-08-31 14:41:55 +02001151 s->next_state = SRV_ST_STARTING;
Emeric Brun5a133512017-10-19 14:42:30 +02001152 *s->op_st_chg.reason = 0;
1153 s->op_st_chg.status = -1;
1154 if (reason) {
1155 strlcpy2(s->op_st_chg.reason, reason, sizeof(s->op_st_chg.reason));
1156 }
1157 else if (check) {
Willy Tarreau358847f2017-11-20 21:33:21 +01001158 strlcpy2(s->op_st_chg.reason, check->desc, sizeof(s->op_st_chg.reason));
Emeric Brun5a133512017-10-19 14:42:30 +02001159 s->op_st_chg.code = check->code;
1160 s->op_st_chg.status = check->status;
1161 s->op_st_chg.duration = check->duration;
1162 }
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001163
Emeric Brun64cc49c2017-10-03 14:46:45 +02001164 if (s->slowstart <= 0)
1165 s->next_state = SRV_ST_RUNNING;
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001166
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001167 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001168 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001169
Emeric Brun9f0b4582017-10-23 14:39:51 +02001170 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001171 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Emeric Brun5a133512017-10-19 14:42:30 +02001172 srv_set_running(srv, NULL, NULL);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001173 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001174 }
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001175}
1176
Willy Tarreau8eb77842014-05-21 13:54:57 +02001177/* Marks server <s> stopping regardless of its checks' statuses and provided it
Emeric Brun5a133512017-10-19 14:42:30 +02001178 * isn't in maintenance. The server is registered in a list to postpone the
1179 * counting of the remaining servers on the proxy and tries to grab requests
1180 * from the proxy. Maintenance servers are ignored. It stores the
1181 * <reason> if non-null as the reason for going down or the available data
1182 * from the check struct to recompute this reason later.
Willy Tarreau8eb77842014-05-21 13:54:57 +02001183 * up. Note that it makes use of the trash to build the log strings, so <reason>
1184 * must not be placed there.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001185 *
1186 * Must be called with the server lock held.
Willy Tarreau8eb77842014-05-21 13:54:57 +02001187 */
Emeric Brun5a133512017-10-19 14:42:30 +02001188void srv_set_stopping(struct server *s, const char *reason, struct check *check)
Willy Tarreau8eb77842014-05-21 13:54:57 +02001189{
1190 struct server *srv;
Willy Tarreau8eb77842014-05-21 13:54:57 +02001191
Emeric Brun64cc49c2017-10-03 14:46:45 +02001192 if (s->cur_admin & SRV_ADMF_MAINT)
Willy Tarreau8eb77842014-05-21 13:54:57 +02001193 return;
1194
Emeric Brun52a91d32017-08-31 14:41:55 +02001195 if (s->next_state == SRV_ST_STOPPING)
Willy Tarreau8eb77842014-05-21 13:54:57 +02001196 return;
1197
Emeric Brun52a91d32017-08-31 14:41:55 +02001198 s->next_state = SRV_ST_STOPPING;
Emeric Brun5a133512017-10-19 14:42:30 +02001199 *s->op_st_chg.reason = 0;
1200 s->op_st_chg.status = -1;
1201 if (reason) {
1202 strlcpy2(s->op_st_chg.reason, reason, sizeof(s->op_st_chg.reason));
1203 }
1204 else if (check) {
Willy Tarreau358847f2017-11-20 21:33:21 +01001205 strlcpy2(s->op_st_chg.reason, check->desc, sizeof(s->op_st_chg.reason));
Emeric Brun5a133512017-10-19 14:42:30 +02001206 s->op_st_chg.code = check->code;
1207 s->op_st_chg.status = check->status;
1208 s->op_st_chg.duration = check->duration;
1209 }
Willy Tarreau8eb77842014-05-21 13:54:57 +02001210
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001211 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001212 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001213
Emeric Brun9f0b4582017-10-23 14:39:51 +02001214 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001215 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Emeric Brun5a133512017-10-19 14:42:30 +02001216 srv_set_stopping(srv, NULL, NULL);
Christopher Faulet8d01fd62018-01-24 21:49:41 +01001217 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001218 }
Willy Tarreau8eb77842014-05-21 13:54:57 +02001219}
Willy Tarreaudbd5e782014-05-20 22:46:35 +02001220
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001221/* Enables admin flag <mode> (among SRV_ADMF_*) on server <s>. This is used to
1222 * enforce either maint mode or drain mode. It is not allowed to set more than
1223 * one flag at once. The equivalent "inherited" flag is propagated to all
1224 * tracking servers. Maintenance mode disables health checks (but not agent
1225 * checks). When either the flag is already set or no flag is passed, nothing
Willy Tarreau8b428482016-11-07 15:53:43 +01001226 * is done. If <cause> is non-null, it will be displayed at the end of the log
1227 * lines to justify the state change.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001228 *
1229 * Must be called with the server lock held.
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001230 */
Willy Tarreau8b428482016-11-07 15:53:43 +01001231void srv_set_admin_flag(struct server *s, enum srv_admin mode, const char *cause)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001232{
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001233 struct server *srv;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001234
1235 if (!mode)
1236 return;
1237
1238 /* stop going down as soon as we meet a server already in the same state */
Emeric Brun52a91d32017-08-31 14:41:55 +02001239 if (s->next_admin & mode)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001240 return;
1241
Emeric Brun52a91d32017-08-31 14:41:55 +02001242 s->next_admin |= mode;
Emeric Brun64cc49c2017-10-03 14:46:45 +02001243 if (cause)
1244 strlcpy2(s->adm_st_chg_cause, cause, sizeof(s->adm_st_chg_cause));
1245
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001246 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001247 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001248
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001249 /* stop going down if the equivalent flag was already present (forced or inherited) */
Emeric Brun52a91d32017-08-31 14:41:55 +02001250 if (((mode & SRV_ADMF_MAINT) && (s->next_admin & ~mode & SRV_ADMF_MAINT)) ||
1251 ((mode & SRV_ADMF_DRAIN) && (s->next_admin & ~mode & SRV_ADMF_DRAIN)))
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001252 return;
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001253
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001254 /* compute the inherited flag to propagate */
1255 if (mode & SRV_ADMF_MAINT)
1256 mode = SRV_ADMF_IMAINT;
1257 else if (mode & SRV_ADMF_DRAIN)
1258 mode = SRV_ADMF_IDRAIN;
1259
Emeric Brun9f0b4582017-10-23 14:39:51 +02001260 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001261 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Willy Tarreau8b428482016-11-07 15:53:43 +01001262 srv_set_admin_flag(srv, mode, cause);
Christopher Faulet8d01fd62018-01-24 21:49:41 +01001263 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001264 }
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001265}
1266
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001267/* Disables admin flag <mode> (among SRV_ADMF_*) on server <s>. This is used to
1268 * stop enforcing either maint mode or drain mode. It is not allowed to set more
1269 * than one flag at once. The equivalent "inherited" flag is propagated to all
1270 * tracking servers. Leaving maintenance mode re-enables health checks. When
1271 * either the flag is already cleared or no flag is passed, nothing is done.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001272 *
1273 * Must be called with the server lock held.
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001274 */
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001275void srv_clr_admin_flag(struct server *s, enum srv_admin mode)
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001276{
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001277 struct server *srv;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001278
1279 if (!mode)
1280 return;
1281
1282 /* stop going down as soon as we see the flag is not there anymore */
Emeric Brun52a91d32017-08-31 14:41:55 +02001283 if (!(s->next_admin & mode))
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001284 return;
1285
Emeric Brun52a91d32017-08-31 14:41:55 +02001286 s->next_admin &= ~mode;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001287
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001288 /* propagate changes */
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001289 srv_update_status(s);
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001290
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001291 /* stop going down if the equivalent flag is still present (forced or inherited) */
Emeric Brun52a91d32017-08-31 14:41:55 +02001292 if (((mode & SRV_ADMF_MAINT) && (s->next_admin & SRV_ADMF_MAINT)) ||
1293 ((mode & SRV_ADMF_DRAIN) && (s->next_admin & SRV_ADMF_DRAIN)))
Willy Tarreaueeba36b2018-08-21 08:22:26 +02001294 return;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001295
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001296 if (mode & SRV_ADMF_MAINT)
1297 mode = SRV_ADMF_IMAINT;
1298 else if (mode & SRV_ADMF_DRAIN)
1299 mode = SRV_ADMF_IDRAIN;
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001300
Emeric Brun9f0b4582017-10-23 14:39:51 +02001301 for (srv = s->trackers; srv; srv = srv->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001302 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Willy Tarreaubfc7b7a2014-05-22 16:14:34 +02001303 srv_clr_admin_flag(srv, mode);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001304 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02001305 }
Willy Tarreaua0066dd2014-05-16 11:25:16 +02001306}
1307
Willy Tarreau757478e2016-11-03 19:22:19 +01001308/* principle: propagate maint and drain to tracking servers. This is useful
1309 * upon startup so that inherited states are correct.
1310 */
1311static void srv_propagate_admin_state(struct server *srv)
1312{
1313 struct server *srv2;
1314
1315 if (!srv->trackers)
1316 return;
1317
1318 for (srv2 = srv->trackers; srv2; srv2 = srv2->tracknext) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001319 HA_SPIN_LOCK(SERVER_LOCK, &srv2->lock);
Emeric Brun52a91d32017-08-31 14:41:55 +02001320 if (srv->next_admin & (SRV_ADMF_MAINT | SRV_ADMF_CMAINT))
Willy Tarreau8b428482016-11-07 15:53:43 +01001321 srv_set_admin_flag(srv2, SRV_ADMF_IMAINT, NULL);
Willy Tarreau757478e2016-11-03 19:22:19 +01001322
Emeric Brun52a91d32017-08-31 14:41:55 +02001323 if (srv->next_admin & SRV_ADMF_DRAIN)
Willy Tarreau8b428482016-11-07 15:53:43 +01001324 srv_set_admin_flag(srv2, SRV_ADMF_IDRAIN, NULL);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001325 HA_SPIN_UNLOCK(SERVER_LOCK, &srv2->lock);
Willy Tarreau757478e2016-11-03 19:22:19 +01001326 }
1327}
1328
1329/* Compute and propagate the admin states for all servers in proxy <px>.
1330 * Only servers *not* tracking another one are considered, because other
1331 * ones will be handled when the server they track is visited.
1332 */
1333void srv_compute_all_admin_states(struct proxy *px)
1334{
1335 struct server *srv;
1336
1337 for (srv = px->srv; srv; srv = srv->next) {
1338 if (srv->track)
1339 continue;
1340 srv_propagate_admin_state(srv);
1341 }
1342}
1343
Willy Tarreaudff55432012-10-10 17:51:05 +02001344/* Note: must not be declared <const> as its list will be overwritten.
1345 * Please take care of keeping this list alphabetically sorted, doing so helps
1346 * all code contributors.
1347 * Optional keywords are also declared with a NULL ->parse() function so that
1348 * the config parser can report an appropriate error when a known keyword was
1349 * not enabled.
Frédéric Lécailledfacd692017-04-16 17:14:14 +02001350 * Note: -1 as ->skip value means that the number of arguments are variable.
Willy Tarreaudff55432012-10-10 17:51:05 +02001351 */
1352static struct srv_kw_list srv_kws = { "ALL", { }, {
Frédéric Lécaille6e5e0d82017-03-20 16:30:18 +01001353 { "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 +01001354 { "agent-check", srv_parse_agent_check, 0, 1 }, /* Enable an auxiliary agent check */
Frédéric Lécaille1502cfd2017-03-10 15:36:14 +01001355 { "backup", srv_parse_backup, 0, 1 }, /* Flag as backup server */
Frédéric Lécaille65aa3562017-03-14 11:20:13 +01001356 { "check", srv_parse_check, 0, 1 }, /* enable health checks */
Frédéric Lécaille25df8902017-03-10 14:04:31 +01001357 { "check-send-proxy", srv_parse_check_send_proxy, 0, 1 }, /* enable PROXY protocol for health checks */
Frédéric Lécaille9d1b95b2017-03-15 09:13:33 +01001358 { "cookie", srv_parse_cookie, 1, 1 }, /* Assign a cookie to the server */
Frédéric Lécaille2a0d0612017-03-21 11:53:54 +01001359 { "disabled", srv_parse_disabled, 0, 1 }, /* Start the server in 'disabled' state */
1360 { "enabled", srv_parse_enabled, 0, 1 }, /* Start the server in 'enabled' state */
Frédéric Lécaille1502cfd2017-03-10 15:36:14 +01001361 { "id", srv_parse_id, 1, 0 }, /* set id# of server */
Willy Tarreau9c538e02019-01-23 10:21:49 +01001362 { "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 +01001363 { "namespace", srv_parse_namespace, 1, 1 }, /* Namespace the server socket belongs to (if supported) */
Frédéric Lécaille6e0843c2017-03-21 16:39:15 +01001364 { "no-agent-check", srv_parse_no_agent_check, 0, 1 }, /* Do not enable any auxiliary agent check */
Frédéric Lécaille1502cfd2017-03-10 15:36:14 +01001365 { "no-backup", srv_parse_no_backup, 0, 1 }, /* Flag as non-backup server */
Frédéric Lécaille65aa3562017-03-14 11:20:13 +01001366 { "no-check", srv_parse_no_check, 0, 1 }, /* disable health checks */
Frédéric Lécaille25df8902017-03-10 14:04:31 +01001367 { "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 +01001368 { "no-send-proxy", srv_parse_no_send_proxy, 0, 1 }, /* Disable use of PROXY V1 protocol */
1369 { "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 +02001370 { "no-tfo", srv_parse_no_tfo, 0, 1 }, /* Disable use of TCP Fast Open */
Frédéric Lécaillef9bc1d62017-03-10 15:50:49 +01001371 { "non-stick", srv_parse_non_stick, 0, 1 }, /* Disable stick-table persistence */
Frédéric Lécaille547356e2017-03-15 08:55:39 +01001372 { "observe", srv_parse_observe, 1, 1 }, /* Enables health adjusting based on observing communication with the server */
Olivier Houchard006e3102018-12-10 18:30:32 +01001373 { "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 +01001374 { "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 +02001375 { "proto", srv_parse_proto, 1, 1 }, /* Set the proto to use for all outgoing connections */
Emmanuel Hocdetf643b802018-02-01 15:20:32 +01001376 { "proxy-v2-options", srv_parse_proxy_v2_options, 1, 1 }, /* options for send-proxy-v2 */
Frédéric Lécaille16186232017-03-14 16:42:49 +01001377 { "redir", srv_parse_redir, 1, 1 }, /* Enable redirection mode */
Frédéric Lécaille31045e42017-03-10 16:40:00 +01001378 { "send-proxy", srv_parse_send_proxy, 0, 1 }, /* Enforce use of PROXY V1 protocol */
1379 { "send-proxy-v2", srv_parse_send_proxy_v2, 0, 1 }, /* Enforce use of PROXY V2 protocol */
Frédéric Lécailledfacd692017-04-16 17:14:14 +02001380 { "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 +01001381 { "stick", srv_parse_stick, 0, 1 }, /* Enable stick-table persistence */
Olivier Houchard8d82db72019-07-04 13:34:10 +02001382 { "tfo", srv_parse_tfo, 0, 1 }, /* enable TCP Fast Open of server */
Frédéric Lécaille67e0e612017-03-14 15:21:31 +01001383 { "track", srv_parse_track, 1, 1 }, /* Set the current state of the server, tracking another one */
Alexander Liu2a54bb72019-05-22 19:44:48 +08001384 { "socks4", srv_parse_socks4, 1, 1 }, /* Set the socks4 proxy of the server*/
1385 { "check-via-socks4", srv_parse_check_via_socks4, 0, 1 }, /* enable socks4 proxy for health checks */
Willy Tarreaudff55432012-10-10 17:51:05 +02001386 { NULL, NULL, 0 },
1387}};
1388
Willy Tarreau0108d902018-11-25 19:14:37 +01001389INITCALL1(STG_REGISTER, srv_register_keywords, &srv_kws);
Willy Tarreaudff55432012-10-10 17:51:05 +02001390
Willy Tarreau004e0452013-11-21 11:22:01 +01001391/* Recomputes the server's eweight based on its state, uweight, the current time,
1392 * and the proxy's algorihtm. To be used after updating sv->uweight. The warmup
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001393 * state is automatically disabled if the time is elapsed. If <must_update> is
1394 * not zero, the update will be propagated immediately.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001395 *
1396 * Must be called with the server lock held.
Willy Tarreau004e0452013-11-21 11:22:01 +01001397 */
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001398void server_recalc_eweight(struct server *sv, int must_update)
Willy Tarreau004e0452013-11-21 11:22:01 +01001399{
1400 struct proxy *px = sv->proxy;
1401 unsigned w;
1402
1403 if (now.tv_sec < sv->last_change || now.tv_sec >= sv->last_change + sv->slowstart) {
1404 /* go to full throttle if the slowstart interval is reached */
Emeric Brun52a91d32017-08-31 14:41:55 +02001405 if (sv->next_state == SRV_ST_STARTING)
1406 sv->next_state = SRV_ST_RUNNING;
Willy Tarreau004e0452013-11-21 11:22:01 +01001407 }
1408
1409 /* We must take care of not pushing the server to full throttle during slow starts.
1410 * It must also start immediately, at least at the minimal step when leaving maintenance.
1411 */
Emeric Brun52a91d32017-08-31 14:41:55 +02001412 if ((sv->next_state == SRV_ST_STARTING) && (px->lbprm.algo & BE_LB_PROP_DYN))
Willy Tarreau004e0452013-11-21 11:22:01 +01001413 w = (px->lbprm.wdiv * (now.tv_sec - sv->last_change) + sv->slowstart) / sv->slowstart;
1414 else
1415 w = px->lbprm.wdiv;
1416
Emeric Brun52a91d32017-08-31 14:41:55 +02001417 sv->next_eweight = (sv->uweight * w + px->lbprm.wmult - 1) / px->lbprm.wmult;
Willy Tarreau004e0452013-11-21 11:22:01 +01001418
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001419 /* propagate changes only if needed (i.e. not recursively) */
Willy Tarreau49725a02018-08-21 19:54:09 +02001420 if (must_update)
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001421 srv_update_status(sv);
Willy Tarreau004e0452013-11-21 11:22:01 +01001422}
1423
Willy Tarreaubaaee002006-06-26 02:48:02 +02001424/*
Simon Horman7d09b9a2013-02-12 10:45:51 +09001425 * Parses weight_str and configures sv accordingly.
1426 * Returns NULL on success, error message string otherwise.
Willy Tarreau46b7f532018-08-21 11:54:26 +02001427 *
1428 * Must be called with the server lock held.
Simon Horman7d09b9a2013-02-12 10:45:51 +09001429 */
1430const char *server_parse_weight_change_request(struct server *sv,
1431 const char *weight_str)
1432{
1433 struct proxy *px;
Simon Hormanb796afa2013-02-12 10:45:53 +09001434 long int w;
1435 char *end;
Simon Horman7d09b9a2013-02-12 10:45:51 +09001436
1437 px = sv->proxy;
1438
1439 /* if the weight is terminated with '%', it is set relative to
1440 * the initial weight, otherwise it is absolute.
1441 */
1442 if (!*weight_str)
1443 return "Require <weight> or <weight%>.\n";
1444
Simon Hormanb796afa2013-02-12 10:45:53 +09001445 w = strtol(weight_str, &end, 10);
1446 if (end == weight_str)
1447 return "Empty weight string empty or preceded by garbage";
1448 else if (end[0] == '%' && end[1] == '\0') {
Simon Horman58b5d292013-02-12 10:45:52 +09001449 if (w < 0)
Simon Horman7d09b9a2013-02-12 10:45:51 +09001450 return "Relative weight must be positive.\n";
Simon Horman58b5d292013-02-12 10:45:52 +09001451 /* Avoid integer overflow */
1452 if (w > 25600)
1453 w = 25600;
Simon Horman7d09b9a2013-02-12 10:45:51 +09001454 w = sv->iweight * w / 100;
Simon Horman58b5d292013-02-12 10:45:52 +09001455 if (w > 256)
1456 w = 256;
Simon Horman7d09b9a2013-02-12 10:45:51 +09001457 }
1458 else if (w < 0 || w > 256)
1459 return "Absolute weight can only be between 0 and 256 inclusive.\n";
Simon Hormanb796afa2013-02-12 10:45:53 +09001460 else if (end[0] != '\0')
1461 return "Trailing garbage in weight string";
Simon Horman7d09b9a2013-02-12 10:45:51 +09001462
1463 if (w && w != sv->iweight && !(px->lbprm.algo & BE_LB_PROP_DYN))
1464 return "Backend is using a static LB algorithm and only accepts weights '0%' and '100%'.\n";
1465
1466 sv->uweight = w;
Willy Tarreau3ff577e2018-08-02 11:48:52 +02001467 server_recalc_eweight(sv, 1);
Simon Horman7d09b9a2013-02-12 10:45:51 +09001468
1469 return NULL;
1470}
1471
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001472/*
Thierry Fournier09a91782016-02-24 08:25:39 +01001473 * Parses <addr_str> and configures <sv> accordingly. <from> precise
1474 * the source of the change in the associated message log.
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001475 * Returns:
1476 * - error string on error
1477 * - NULL on success
Willy Tarreau46b7f532018-08-21 11:54:26 +02001478 *
1479 * Must be called with the server lock held.
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001480 */
1481const char *server_parse_addr_change_request(struct server *sv,
Thierry Fournier09a91782016-02-24 08:25:39 +01001482 const char *addr_str, const char *updater)
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001483{
1484 unsigned char ip[INET6_ADDRSTRLEN];
1485
1486 if (inet_pton(AF_INET6, addr_str, ip)) {
Thierry Fournier09a91782016-02-24 08:25:39 +01001487 update_server_addr(sv, ip, AF_INET6, updater);
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001488 return NULL;
1489 }
1490 if (inet_pton(AF_INET, addr_str, ip)) {
Thierry Fournier09a91782016-02-24 08:25:39 +01001491 update_server_addr(sv, ip, AF_INET, updater);
Baptiste Assmann3d8f8312015-04-13 22:54:33 +02001492 return NULL;
1493 }
1494
1495 return "Could not understand IP address format.\n";
1496}
1497
Willy Tarreau46b7f532018-08-21 11:54:26 +02001498/*
1499 * Must be called with the server lock held.
1500 */
Nenad Merdanovic174dd372016-04-24 23:10:06 +02001501const char *server_parse_maxconn_change_request(struct server *sv,
1502 const char *maxconn_str)
1503{
1504 long int v;
1505 char *end;
1506
1507 if (!*maxconn_str)
1508 return "Require <maxconn>.\n";
1509
1510 v = strtol(maxconn_str, &end, 10);
1511 if (end == maxconn_str)
1512 return "maxconn string empty or preceded by garbage";
1513 else if (end[0] != '\0')
1514 return "Trailing garbage in maxconn string";
1515
1516 if (sv->maxconn == sv->minconn) { // static maxconn
1517 sv->maxconn = sv->minconn = v;
1518 } else { // dynamic maxconn
1519 sv->maxconn = v;
1520 }
1521
1522 if (may_dequeue_tasks(sv, sv->proxy))
1523 process_srv_queue(sv);
1524
1525 return NULL;
1526}
1527
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001528#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001529static struct sample_expr *srv_sni_sample_parse_expr(struct server *srv, struct proxy *px,
1530 const char *file, int linenum, char **err)
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001531{
1532 int idx;
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001533 const char *args[] = {
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001534 srv->sni_expr,
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001535 NULL,
1536 };
1537
1538 idx = 0;
Olivier Houchard7d8e6882017-04-20 18:21:17 +02001539 px->conf.args.ctx = ARGC_SRV;
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001540
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001541 return sample_parse_expr((char **)args, &idx, file, linenum, err, &px->conf.args);
1542}
1543
1544static int server_parse_sni_expr(struct server *newsrv, struct proxy *px, char **err)
1545{
1546 struct sample_expr *expr;
1547
1548 expr = srv_sni_sample_parse_expr(newsrv, px, px->conf.file, px->conf.line, err);
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001549 if (!expr) {
1550 memprintf(err, "error detected while parsing sni expression : %s", *err);
1551 return ERR_ALERT | ERR_FATAL;
1552 }
1553
1554 if (!(expr->fetch->val & SMP_VAL_BE_SRV_CON)) {
1555 memprintf(err, "error detected while parsing sni expression : "
1556 " fetch method '%s' extracts information from '%s', "
1557 "none of which is available here.\n",
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001558 newsrv->sni_expr, sample_src_names(expr->fetch->use));
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001559 return ERR_ALERT | ERR_FATAL;
1560 }
1561
1562 px->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY);
1563 release_sample_expr(newsrv->ssl_ctx.sni);
1564 newsrv->ssl_ctx.sni = expr;
1565
1566 return 0;
1567}
1568#endif
1569
1570static void display_parser_err(const char *file, int linenum, char **args, int cur_arg, char **err)
1571{
1572 if (err && *err) {
1573 indent_msg(err, 2);
Christopher Faulet767a84b2017-11-24 16:50:31 +01001574 ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], *err);
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001575 }
1576 else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001577 ha_alert("parsing [%s:%d] : '%s %s' : error encountered while processing '%s'.\n",
1578 file, linenum, args[0], args[1], args[cur_arg]);
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01001579}
1580
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001581static void srv_conn_src_sport_range_cpy(struct server *srv,
1582 struct server *src)
1583{
1584 int range_sz;
1585
1586 range_sz = src->conn_src.sport_range->size;
1587 if (range_sz > 0) {
1588 srv->conn_src.sport_range = port_range_alloc_range(range_sz);
1589 if (srv->conn_src.sport_range != NULL) {
1590 int i;
1591
1592 for (i = 0; i < range_sz; i++) {
1593 srv->conn_src.sport_range->ports[i] =
1594 src->conn_src.sport_range->ports[i];
1595 }
1596 }
1597 }
1598}
1599
1600/*
1601 * Copy <src> server connection source settings to <srv> server everything needed.
1602 */
1603static void srv_conn_src_cpy(struct server *srv, struct server *src)
1604{
1605 srv->conn_src.opts = src->conn_src.opts;
1606 srv->conn_src.source_addr = src->conn_src.source_addr;
1607
1608 /* Source port range copy. */
1609 if (src->conn_src.sport_range != NULL)
1610 srv_conn_src_sport_range_cpy(srv, src);
1611
1612#ifdef CONFIG_HAP_TRANSPARENT
1613 if (src->conn_src.bind_hdr_name != NULL) {
1614 srv->conn_src.bind_hdr_name = strdup(src->conn_src.bind_hdr_name);
1615 srv->conn_src.bind_hdr_len = strlen(src->conn_src.bind_hdr_name);
1616 }
1617 srv->conn_src.bind_hdr_occ = src->conn_src.bind_hdr_occ;
1618 srv->conn_src.tproxy_addr = src->conn_src.tproxy_addr;
1619#endif
1620 if (src->conn_src.iface_name != NULL)
1621 srv->conn_src.iface_name = strdup(src->conn_src.iface_name);
1622}
1623
1624/*
1625 * Copy <src> server SSL settings to <srv> server allocating
1626 * everything needed.
1627 */
1628#if defined(USE_OPENSSL)
1629static void srv_ssl_settings_cpy(struct server *srv, struct server *src)
1630{
1631 if (src->ssl_ctx.ca_file != NULL)
1632 srv->ssl_ctx.ca_file = strdup(src->ssl_ctx.ca_file);
1633 if (src->ssl_ctx.crl_file != NULL)
1634 srv->ssl_ctx.crl_file = strdup(src->ssl_ctx.crl_file);
1635 if (src->ssl_ctx.client_crt != NULL)
1636 srv->ssl_ctx.client_crt = strdup(src->ssl_ctx.client_crt);
1637
1638 srv->ssl_ctx.verify = src->ssl_ctx.verify;
1639
1640 if (src->ssl_ctx.verify_host != NULL)
1641 srv->ssl_ctx.verify_host = strdup(src->ssl_ctx.verify_host);
1642 if (src->ssl_ctx.ciphers != NULL)
1643 srv->ssl_ctx.ciphers = strdup(src->ssl_ctx.ciphers);
Willy Tarreau5db847a2019-05-09 14:13:35 +02001644#if (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L && !defined OPENSSL_IS_BORINGSSL)
Dirkjan Bussink415150f2018-09-14 11:14:21 +02001645 if (src->ssl_ctx.ciphersuites != NULL)
1646 srv->ssl_ctx.ciphersuites = strdup(src->ssl_ctx.ciphersuites);
1647#endif
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001648 if (src->sni_expr != NULL)
1649 srv->sni_expr = strdup(src->sni_expr);
Olivier Houchardc7566002018-11-20 23:33:50 +01001650
1651#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
1652 if (src->ssl_ctx.alpn_str) {
1653 srv->ssl_ctx.alpn_str = malloc(src->ssl_ctx.alpn_len);
1654 if (srv->ssl_ctx.alpn_str) {
1655 memcpy(srv->ssl_ctx.alpn_str, src->ssl_ctx.alpn_str,
1656 src->ssl_ctx.alpn_len);
1657 srv->ssl_ctx.alpn_len = src->ssl_ctx.alpn_len;
1658 }
1659 }
1660#endif
1661#ifdef OPENSSL_NPN_NEGOTIATED
1662 if (src->ssl_ctx.npn_str) {
1663 srv->ssl_ctx.npn_str = malloc(src->ssl_ctx.npn_len);
1664 if (srv->ssl_ctx.npn_str) {
1665 memcpy(srv->ssl_ctx.npn_str, src->ssl_ctx.npn_str,
1666 src->ssl_ctx.npn_len);
1667 srv->ssl_ctx.npn_len = src->ssl_ctx.npn_len;
1668 }
1669 }
1670#endif
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001671}
1672#endif
1673
1674/*
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001675 * Prepare <srv> for hostname resolution.
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001676 * May be safely called with a default server as <src> argument (without hostname).
Frédéric Lécailleb418c122017-04-26 11:24:02 +02001677 * Returns -1 in case of any allocation failure, 0 if not.
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001678 */
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001679static int srv_prepare_for_resolution(struct server *srv, const char *hostname)
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001680{
Christopher Faulet67957bd2017-09-27 11:00:59 +02001681 char *hostname_dn;
1682 int hostname_len, hostname_dn_len;
1683
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001684 if (!hostname)
Frédéric Lécailleb418c122017-04-26 11:24:02 +02001685 return 0;
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001686
Christopher Faulet67957bd2017-09-27 11:00:59 +02001687 hostname_len = strlen(hostname);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001688 hostname_dn = trash.area;
Christopher Faulet67957bd2017-09-27 11:00:59 +02001689 hostname_dn_len = dns_str_to_dn_label(hostname, hostname_len + 1,
1690 hostname_dn, trash.size);
1691 if (hostname_dn_len == -1)
1692 goto err;
Baptiste Assmann81ed1a02017-05-03 10:11:44 +02001693
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001694
Christopher Faulet67957bd2017-09-27 11:00:59 +02001695 free(srv->hostname);
1696 free(srv->hostname_dn);
1697 srv->hostname = strdup(hostname);
1698 srv->hostname_dn = strdup(hostname_dn);
1699 srv->hostname_dn_len = hostname_dn_len;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001700 if (!srv->hostname || !srv->hostname_dn)
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001701 goto err;
1702
Frédéric Lécailleb418c122017-04-26 11:24:02 +02001703 return 0;
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001704
1705 err:
Christopher Faulet67957bd2017-09-27 11:00:59 +02001706 free(srv->hostname); srv->hostname = NULL;
1707 free(srv->hostname_dn); srv->hostname_dn = NULL;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02001708 return -1;
1709}
1710
Baptiste Assmann201c07f2017-05-22 15:17:15 +02001711/*
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001712 * Copy <src> server settings to <srv> server allocating
1713 * everything needed.
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001714 * This function is not supposed to be called at any time, but only
1715 * during server settings parsing or during server allocations from
1716 * a server template, and just after having calloc()'ed a new server.
1717 * So, <src> may only be a default server (when parsing server settings)
1718 * or a server template (during server allocations from a server template).
1719 * <srv_tmpl> distinguishes these two cases (must be 1 if <srv> is a template,
1720 * 0 if not).
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001721 */
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001722static void srv_settings_cpy(struct server *srv, struct server *src, int srv_tmpl)
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001723{
1724 /* Connection source settings copy */
1725 srv_conn_src_cpy(srv, src);
1726
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02001727 if (srv_tmpl) {
1728 srv->addr = src->addr;
1729 srv->svc_port = src->svc_port;
1730 }
1731
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001732 srv->pp_opts = src->pp_opts;
1733 if (src->rdr_pfx != NULL) {
1734 srv->rdr_pfx = strdup(src->rdr_pfx);
1735 srv->rdr_len = src->rdr_len;
1736 }
1737 if (src->cookie != NULL) {
1738 srv->cookie = strdup(src->cookie);
1739 srv->cklen = src->cklen;
1740 }
1741 srv->use_ssl = src->use_ssl;
1742 srv->check.addr = srv->agent.addr = src->check.addr;
1743 srv->check.use_ssl = src->check.use_ssl;
1744 srv->check.port = src->check.port;
Olivier Houchard21944012018-12-21 19:42:01 +01001745 srv->check.sni = src->check.sni;
Olivier Houchard92150142018-12-21 19:47:01 +01001746 srv->check.alpn_str = src->check.alpn_str;
Ilya Shipitsin0c50b1e2019-04-30 21:21:28 +05001747 srv->check.alpn_len = src->check.alpn_len;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001748 /* Note: 'flags' field has potentially been already initialized. */
1749 srv->flags |= src->flags;
1750 srv->do_check = src->do_check;
1751 srv->do_agent = src->do_agent;
1752 if (srv->check.port)
1753 srv->flags |= SRV_F_CHECKPORT;
1754 srv->check.inter = src->check.inter;
1755 srv->check.fastinter = src->check.fastinter;
1756 srv->check.downinter = src->check.downinter;
1757 srv->agent.use_ssl = src->agent.use_ssl;
1758 srv->agent.port = src->agent.port;
1759 if (src->agent.send_string != NULL)
1760 srv->agent.send_string = strdup(src->agent.send_string);
1761 srv->agent.send_string_len = src->agent.send_string_len;
1762 srv->agent.inter = src->agent.inter;
1763 srv->agent.fastinter = src->agent.fastinter;
1764 srv->agent.downinter = src->agent.downinter;
1765 srv->maxqueue = src->maxqueue;
1766 srv->minconn = src->minconn;
1767 srv->maxconn = src->maxconn;
1768 srv->slowstart = src->slowstart;
1769 srv->observe = src->observe;
1770 srv->onerror = src->onerror;
1771 srv->onmarkeddown = src->onmarkeddown;
1772 srv->onmarkedup = src->onmarkedup;
1773 if (src->trackit != NULL)
1774 srv->trackit = strdup(src->trackit);
1775 srv->consecutive_errors_limit = src->consecutive_errors_limit;
1776 srv->uweight = srv->iweight = src->iweight;
1777
1778 srv->check.send_proxy = src->check.send_proxy;
1779 /* health: up, but will fall down at first failure */
1780 srv->check.rise = srv->check.health = src->check.rise;
1781 srv->check.fall = src->check.fall;
1782
1783 /* Here we check if 'disabled' is the default server state */
Emeric Brun52a91d32017-08-31 14:41:55 +02001784 if (src->next_admin & (SRV_ADMF_CMAINT | SRV_ADMF_FMAINT)) {
1785 srv->next_admin |= SRV_ADMF_CMAINT | SRV_ADMF_FMAINT;
1786 srv->next_state = SRV_ST_STOPPED;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001787 srv->check.state |= CHK_ST_PAUSED;
1788 srv->check.health = 0;
1789 }
1790
1791 /* health: up but will fall down at first failure */
1792 srv->agent.rise = srv->agent.health = src->agent.rise;
1793 srv->agent.fall = src->agent.fall;
1794
1795 if (src->resolvers_id != NULL)
1796 srv->resolvers_id = strdup(src->resolvers_id);
1797 srv->dns_opts.family_prio = src->dns_opts.family_prio;
Baptiste Assmann8e2d9432018-06-22 15:04:43 +02001798 srv->dns_opts.accept_duplicate_ip = src->dns_opts.accept_duplicate_ip;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001799 if (srv->dns_opts.family_prio == AF_UNSPEC)
1800 srv->dns_opts.family_prio = AF_INET6;
1801 memcpy(srv->dns_opts.pref_net,
1802 src->dns_opts.pref_net,
1803 sizeof srv->dns_opts.pref_net);
1804 srv->dns_opts.pref_net_nb = src->dns_opts.pref_net_nb;
1805
1806 srv->init_addr_methods = src->init_addr_methods;
1807 srv->init_addr = src->init_addr;
1808#if defined(USE_OPENSSL)
1809 srv_ssl_settings_cpy(srv, src);
1810#endif
1811#ifdef TCP_USER_TIMEOUT
1812 srv->tcp_ut = src->tcp_ut;
1813#endif
Christopher Faulet8ed0a3e2018-04-10 14:45:45 +02001814 srv->mux_proto = src->mux_proto;
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01001815 srv->pool_purge_delay = src->pool_purge_delay;
Olivier Houchard006e3102018-12-10 18:30:32 +01001816 srv->max_idle_conns = src->max_idle_conns;
Willy Tarreau9c538e02019-01-23 10:21:49 +01001817 srv->max_reuse = src->max_reuse;
Christopher Faulet8ed0a3e2018-04-10 14:45:45 +02001818
Olivier Houchard8da5f982017-08-04 18:35:36 +02001819 if (srv_tmpl)
1820 srv->srvrq = src->srvrq;
Alexander Liu2a54bb72019-05-22 19:44:48 +08001821
1822 srv->check.via_socks4 = src->check.via_socks4;
1823 srv->socks4_addr = src->socks4_addr;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001824}
1825
William Lallemand313bfd12018-10-26 14:47:32 +02001826struct server *new_server(struct proxy *proxy)
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001827{
1828 struct server *srv;
1829
1830 srv = calloc(1, sizeof *srv);
1831 if (!srv)
1832 return NULL;
1833
1834 srv->obj_type = OBJ_TYPE_SERVER;
1835 srv->proxy = proxy;
1836 LIST_INIT(&srv->actconns);
Patrick Hemmer0355dab2018-05-11 12:52:31 -04001837 srv->pendconns = EB_ROOT;
Christopher Faulet40a007c2017-07-03 15:41:01 +02001838
Emeric Brun52a91d32017-08-31 14:41:55 +02001839 srv->next_state = SRV_ST_RUNNING; /* early server setup */
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001840 srv->last_change = now.tv_sec;
1841
1842 srv->check.status = HCHK_STATUS_INI;
1843 srv->check.server = srv;
Olivier Houchardc98aa1f2019-01-11 18:17:17 +01001844 srv->check.proxy = proxy;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001845 srv->check.tcpcheck_rules = &proxy->tcpcheck_rules;
1846
1847 srv->agent.status = HCHK_STATUS_INI;
1848 srv->agent.server = srv;
Willy Tarreau1ba32032019-01-21 07:48:26 +01001849 srv->agent.proxy = proxy;
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001850 srv->xprt = srv->check.xprt = srv->agent.xprt = xprt_get(XPRT_RAW);
1851
Willy Tarreau975b1552019-06-06 16:25:55 +02001852 /* please don't put default server settings here, they are set in
1853 * init_default_instance().
1854 */
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02001855 return srv;
1856}
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001857
1858/*
1859 * Validate <srv> server health-check settings.
1860 * Returns 0 if everything is OK, -1 if not.
1861 */
1862static int server_healthcheck_validate(const char *file, int linenum, struct server *srv)
1863{
1864 struct tcpcheck_rule *r = NULL;
1865 struct list *l;
1866
1867 /*
1868 * We need at least a service port, a check port or the first tcp-check rule must
1869 * be a 'connect' one when checking an IPv4/IPv6 server.
1870 */
1871 if ((srv_check_healthcheck_port(&srv->check) != 0) ||
1872 (!is_inet_addr(&srv->check.addr) && (is_addr(&srv->check.addr) || !is_inet_addr(&srv->addr))))
1873 return 0;
1874
1875 r = (struct tcpcheck_rule *)srv->proxy->tcpcheck_rules.n;
1876 if (!r) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001877 ha_alert("parsing [%s:%d] : server %s has neither service port nor check port. "
1878 "Check has been disabled.\n",
1879 file, linenum, srv->id);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001880 return -1;
1881 }
1882
1883 /* search the first action (connect / send / expect) in the list */
1884 l = &srv->proxy->tcpcheck_rules;
1885 list_for_each_entry(r, l, list) {
1886 if (r->action != TCPCHK_ACT_COMMENT)
1887 break;
1888 }
1889
1890 if ((r->action != TCPCHK_ACT_CONNECT) || !r->port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001891 ha_alert("parsing [%s:%d] : server %s has neither service port nor check port "
1892 "nor tcp_check rule 'connect' with port information. Check has been disabled.\n",
1893 file, linenum, srv->id);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001894 return -1;
1895 }
1896
1897 /* scan the tcp-check ruleset to ensure a port has been configured */
1898 l = &srv->proxy->tcpcheck_rules;
1899 list_for_each_entry(r, l, list) {
1900 if ((r->action == TCPCHK_ACT_CONNECT) && (!r->port)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001901 ha_alert("parsing [%s:%d] : server %s has neither service port nor check port, "
1902 "and a tcp_check rule 'connect' with no port information. Check has been disabled.\n",
1903 file, linenum, srv->id);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001904 return -1;
1905 }
1906 }
1907
1908 return 0;
1909}
1910
1911/*
1912 * Initialize <srv> health-check structure.
1913 * Returns the error string in case of memory allocation failure, NULL if not.
1914 */
1915static const char *do_health_check_init(struct server *srv, int check_type, int state)
1916{
1917 const char *ret;
1918
1919 if (!srv->do_check)
1920 return NULL;
1921
1922 ret = init_check(&srv->check, check_type);
1923 if (ret)
1924 return ret;
1925
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001926 srv->check.state |= state;
1927 global.maxsock++;
1928
1929 return NULL;
1930}
1931
1932static int server_health_check_init(const char *file, int linenum,
1933 struct server *srv, struct proxy *curproxy)
1934{
1935 const char *ret;
1936
1937 if (!srv->do_check)
1938 return 0;
1939
1940 if (srv->trackit) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001941 ha_alert("parsing [%s:%d]: unable to enable checks and tracking at the same time!\n",
1942 file, linenum);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001943 return ERR_ALERT | ERR_FATAL;
1944 }
1945
1946 if (server_healthcheck_validate(file, linenum, srv) < 0)
1947 return ERR_ALERT | ERR_ABORT;
1948
1949 /* note: check type will be set during the config review phase */
1950 ret = do_health_check_init(srv, 0, CHK_ST_CONFIGURED | CHK_ST_ENABLED);
1951 if (ret) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001952 ha_alert("parsing [%s:%d] : %s.\n", file, linenum, ret);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02001953 return ERR_ALERT | ERR_ABORT;
1954 }
1955
1956 return 0;
1957}
1958
1959/*
1960 * Initialize <srv> agent check structure.
1961 * Returns the error string in case of memory allocation failure, NULL if not.
1962 */
1963static const char *do_server_agent_check_init(struct server *srv, int state)
1964{
1965 const char *ret;
1966
1967 if (!srv->do_agent)
1968 return NULL;
1969
1970 ret = init_check(&srv->agent, PR_O2_LB_AGENT_CHK);
1971 if (ret)
1972 return ret;
1973
1974 if (!srv->agent.inter)
1975 srv->agent.inter = srv->check.inter;
1976
1977 srv->agent.state |= state;
1978 global.maxsock++;
1979
1980 return NULL;
1981}
1982
1983static int server_agent_check_init(const char *file, int linenum,
1984 struct server *srv, struct proxy *curproxy)
1985{
1986 const char *ret;
1987
1988 if (!srv->do_agent)
1989 return 0;
1990
1991 if (!srv->agent.port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001992 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 +02001993 file, linenum, srv->id);
1994 return ERR_ALERT | ERR_FATAL;
1995 }
1996
1997 ret = do_server_agent_check_init(srv, CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_AGENT);
1998 if (ret) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001999 ha_alert("parsing [%s:%d] : %s.\n", file, linenum, ret);
Frédéric Lécaille759ea982017-03-30 17:32:36 +02002000 return ERR_ALERT | ERR_ABORT;
2001 }
2002
2003 return 0;
2004}
2005
2006#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
2007static int server_sni_expr_init(const char *file, int linenum, char **args, int cur_arg,
2008 struct server *srv, struct proxy *proxy)
2009{
2010 int ret;
2011 char *err = NULL;
2012
2013 if (!srv->sni_expr)
2014 return 0;
2015
2016 ret = server_parse_sni_expr(srv, proxy, &err);
2017 if (!ret)
2018 return 0;
2019
2020 display_parser_err(file, linenum, args, cur_arg, &err);
2021 free(err);
2022
2023 return ret;
2024}
2025#endif
2026
2027/*
2028 * Server initializations finalization.
2029 * Initialize health check, agent check and SNI expression if enabled.
2030 * Must not be called for a default server instance.
2031 */
2032static int server_finalize_init(const char *file, int linenum, char **args, int cur_arg,
2033 struct server *srv, struct proxy *px)
2034{
2035 int ret;
2036
2037 if ((ret = server_health_check_init(file, linenum, srv, px)) != 0 ||
2038 (ret = server_agent_check_init(file, linenum, srv, px)) != 0) {
2039 return ret;
2040 }
2041
2042#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
2043 if ((ret = server_sni_expr_init(file, linenum, args, cur_arg, srv, px)) != 0)
2044 return ret;
2045#endif
2046
2047 if (srv->flags & SRV_F_BACKUP)
2048 px->srv_bck++;
2049 else
2050 px->srv_act++;
2051 srv_lb_commit_status(srv);
2052
2053 return 0;
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01002054err:
2055 return ERR_ALERT | ERR_FATAL;
Frédéric Lécaille759ea982017-03-30 17:32:36 +02002056}
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02002057
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002058/*
2059 * Parse as much as possible such a range string argument: low[-high]
2060 * Set <nb_low> and <nb_high> values so that they may be reused by this loop
2061 * for(int i = nb_low; i <= nb_high; i++)... with nb_low >= 1.
2062 * Fails if 'low' < 0 or 'high' is present and not higher than 'low'.
2063 * Returns 0 if succeeded, -1 if not.
2064 */
2065static int srv_tmpl_parse_range(struct server *srv, const char *arg, int *nb_low, int *nb_high)
2066{
2067 char *nb_high_arg;
2068
2069 *nb_high = 0;
2070 chunk_printf(&trash, "%s", arg);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002071 *nb_low = atoi(trash.area);
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002072
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002073 if ((nb_high_arg = strchr(trash.area, '-'))) {
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002074 *nb_high_arg++ = '\0';
2075 *nb_high = atoi(nb_high_arg);
2076 }
2077 else {
2078 *nb_high += *nb_low;
2079 *nb_low = 1;
2080 }
2081
2082 if (*nb_low < 0 || *nb_high < *nb_low)
2083 return -1;
2084
2085 return 0;
2086}
2087
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002088static inline void srv_set_id_from_prefix(struct server *srv, const char *prefix, int nb)
2089{
2090 chunk_printf(&trash, "%s%d", prefix, nb);
2091 free(srv->id);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002092 srv->id = strdup(trash.area);
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002093}
2094
2095/*
2096 * Initialize as much as possible servers from <srv> server template.
2097 * Note that a server template is a special server with
2098 * a few different parameters than a server which has
2099 * been parsed mostly the same way as a server.
Joseph Herlant44466822018-11-15 08:57:51 -08002100 * Returns the number of servers successfully allocated,
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002101 * 'srv' template included.
2102 */
2103static int server_template_init(struct server *srv, struct proxy *px)
2104{
2105 int i;
2106 struct server *newsrv;
2107
2108 for (i = srv->tmpl_info.nb_low + 1; i <= srv->tmpl_info.nb_high; i++) {
2109 int check_init_state;
2110 int agent_init_state;
2111
2112 newsrv = new_server(px);
2113 if (!newsrv)
2114 goto err;
2115
2116 srv_settings_cpy(newsrv, srv, 1);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02002117 srv_prepare_for_resolution(newsrv, srv->hostname);
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002118#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
2119 if (newsrv->sni_expr) {
2120 newsrv->ssl_ctx.sni = srv_sni_sample_parse_expr(newsrv, px, NULL, 0, NULL);
2121 if (!newsrv->ssl_ctx.sni)
2122 goto err;
2123 }
2124#endif
2125 /* Set this new server ID. */
2126 srv_set_id_from_prefix(newsrv, srv->tmpl_info.prefix, i);
2127
2128 /* Initial checks states. */
2129 check_init_state = CHK_ST_CONFIGURED | CHK_ST_ENABLED;
2130 agent_init_state = CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_AGENT;
2131
2132 if (do_health_check_init(newsrv, px->options2 & PR_O2_CHK_ANY, check_init_state) ||
2133 do_server_agent_check_init(newsrv, agent_init_state))
2134 goto err;
2135
2136 /* Linked backwards first. This will be restablished after parsing. */
2137 newsrv->next = px->srv;
2138 px->srv = newsrv;
2139 }
2140 srv_set_id_from_prefix(srv, srv->tmpl_info.prefix, srv->tmpl_info.nb_low);
2141
2142 return i - srv->tmpl_info.nb_low;
2143
2144 err:
2145 srv_set_id_from_prefix(srv, srv->tmpl_info.prefix, srv->tmpl_info.nb_low);
2146 if (newsrv) {
2147#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
2148 release_sample_expr(newsrv->ssl_ctx.sni);
2149#endif
2150 free_check(&newsrv->agent);
2151 free_check(&newsrv->check);
2152 }
2153 free(newsrv);
2154 return i - srv->tmpl_info.nb_low;
2155}
2156
Frédéric Lécaille355b2032019-01-11 14:06:12 +01002157int 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 +02002158{
2159 struct server *newsrv = NULL;
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002160 const char *err = NULL;
Willy Tarreau272adea2014-03-31 10:39:59 +02002161 char *errmsg = NULL;
2162 int err_code = 0;
2163 unsigned val;
Willy Tarreau07101d52015-09-08 16:16:35 +02002164 char *fqdn = NULL;
Willy Tarreau272adea2014-03-31 10:39:59 +02002165
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002166 if (!strcmp(args[0], "server") ||
Frédéric Lécaillec06b5d42018-04-26 10:06:41 +02002167 !strcmp(args[0], "peer") ||
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002168 !strcmp(args[0], "default-server") ||
2169 !strcmp(args[0], "server-template")) {
Willy Tarreau272adea2014-03-31 10:39:59 +02002170 int cur_arg;
Frédéric Lécaille6e0843c2017-03-21 16:39:15 +01002171 int defsrv = (*args[0] == 'd');
Frédéric Lécaillec06b5d42018-04-26 10:06:41 +02002172 int srv = !defsrv && (*args[0] == 'p' || !strcmp(args[0], "server"));
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002173 int srv_tmpl = !defsrv && !srv;
2174 int tmpl_range_low = 0, tmpl_range_high = 0;
Willy Tarreau272adea2014-03-31 10:39:59 +02002175
2176 if (!defsrv && curproxy == defproxy) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002177 ha_alert("parsing [%s:%d] : '%s' not allowed in 'defaults' section.\n", file, linenum, args[0]);
Willy Tarreau272adea2014-03-31 10:39:59 +02002178 err_code |= ERR_ALERT | ERR_FATAL;
2179 goto out;
2180 }
2181 else if (warnifnotcap(curproxy, PR_CAP_BE, file, linenum, args[0], NULL))
Olivier Houchard306e6532018-07-24 16:48:59 +02002182 err_code |= ERR_WARN;
Willy Tarreau272adea2014-03-31 10:39:59 +02002183
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002184 /* There is no mandatory first arguments for default server. */
Frédéric Lécaille355b2032019-01-11 14:06:12 +01002185 if (srv && parse_addr) {
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002186 if (!*args[2]) {
2187 /* 'server' line number of argument check. */
Christopher Faulet767a84b2017-11-24 16:50:31 +01002188 ha_alert("parsing [%s:%d] : '%s' expects <name> and <addr>[:<port>] as arguments.\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002189 file, linenum, args[0]);
2190 err_code |= ERR_ALERT | ERR_FATAL;
2191 goto out;
2192 }
2193
2194 err = invalid_char(args[1]);
2195 }
2196 else if (srv_tmpl) {
2197 if (!*args[3]) {
2198 /* 'server-template' line number of argument check. */
Christopher Faulet767a84b2017-11-24 16:50:31 +01002199 ha_alert("parsing [%s:%d] : '%s' expects <prefix> <nb | range> <addr>[:<port>] as arguments.\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002200 file, linenum, args[0]);
2201 err_code |= ERR_ALERT | ERR_FATAL;
2202 goto out;
2203 }
2204
2205 err = invalid_prefix_char(args[1]);
Willy Tarreau272adea2014-03-31 10:39:59 +02002206 }
2207
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002208 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002209 ha_alert("parsing [%s:%d] : character '%c' is not permitted in %s %s '%s'.\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002210 file, linenum, *err, args[0], srv ? "name" : "prefix", args[1]);
Willy Tarreau272adea2014-03-31 10:39:59 +02002211 err_code |= ERR_ALERT | ERR_FATAL;
2212 goto out;
2213 }
2214
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002215 cur_arg = 2;
2216 if (srv_tmpl) {
2217 /* Parse server-template <nb | range> arg. */
2218 if (srv_tmpl_parse_range(newsrv, args[cur_arg], &tmpl_range_low, &tmpl_range_high) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002219 ha_alert("parsing [%s:%d] : Wrong %s number or range arg '%s'.\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002220 file, linenum, args[0], args[cur_arg]);
2221 err_code |= ERR_ALERT | ERR_FATAL;
2222 goto out;
2223 }
2224 cur_arg++;
2225 }
2226
Willy Tarreau272adea2014-03-31 10:39:59 +02002227 if (!defsrv) {
2228 struct sockaddr_storage *sk;
Willy Tarreau6ecb10a2017-01-06 18:36:06 +01002229 int port1, port2, port;
Willy Tarreau272adea2014-03-31 10:39:59 +02002230 struct protocol *proto;
2231
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02002232 newsrv = new_server(curproxy);
2233 if (!newsrv) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002234 ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
Willy Tarreau272adea2014-03-31 10:39:59 +02002235 err_code |= ERR_ALERT | ERR_ABORT;
2236 goto out;
2237 }
2238
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002239 if (srv_tmpl) {
2240 newsrv->tmpl_info.nb_low = tmpl_range_low;
2241 newsrv->tmpl_info.nb_high = tmpl_range_high;
2242 }
2243
Willy Tarreau272adea2014-03-31 10:39:59 +02002244 /* the servers are linked backwards first */
2245 newsrv->next = curproxy->srv;
2246 curproxy->srv = newsrv;
Willy Tarreau272adea2014-03-31 10:39:59 +02002247 newsrv->conf.file = strdup(file);
2248 newsrv->conf.line = linenum;
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002249 /* Note: for a server template, its id is its prefix.
2250 * This is a temporary id which will be used for server allocations to come
2251 * after parsing.
2252 */
2253 if (srv)
2254 newsrv->id = strdup(args[1]);
2255 else
2256 newsrv->tmpl_info.prefix = strdup(args[1]);
Willy Tarreau272adea2014-03-31 10:39:59 +02002257
2258 /* several ways to check the port component :
2259 * - IP => port=+0, relative (IPv4 only)
2260 * - IP: => port=+0, relative
2261 * - IP:N => port=N, absolute
2262 * - IP:+N => port=+N, relative
2263 * - IP:-N => port=-N, relative
2264 */
Frédéric Lécaille355b2032019-01-11 14:06:12 +01002265 if (!parse_addr)
2266 goto skip_addr;
2267
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002268 sk = str2sa_range(args[cur_arg], &port, &port1, &port2, &errmsg, NULL, &fqdn, 0);
Willy Tarreau272adea2014-03-31 10:39:59 +02002269 if (!sk) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002270 ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], errmsg);
Willy Tarreau272adea2014-03-31 10:39:59 +02002271 err_code |= ERR_ALERT | ERR_FATAL;
2272 goto out;
2273 }
2274
2275 proto = protocol_by_family(sk->ss_family);
Willy Tarreau9698f4b2017-01-06 18:42:57 +01002276 if (!fqdn && (!proto || !proto->connect)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002277 ha_alert("parsing [%s:%d] : '%s %s' : connect() not supported for this address family.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002278 file, linenum, args[0], args[1]);
2279 err_code |= ERR_ALERT | ERR_FATAL;
2280 goto out;
2281 }
2282
2283 if (!port1 || !port2) {
2284 /* no port specified, +offset, -offset */
Willy Tarreauc93cd162014-05-13 15:54:22 +02002285 newsrv->flags |= SRV_F_MAPPORTS;
Willy Tarreau272adea2014-03-31 10:39:59 +02002286 }
2287 else if (port1 != port2) {
2288 /* port range */
Christopher Faulet767a84b2017-11-24 16:50:31 +01002289 ha_alert("parsing [%s:%d] : '%s %s' : port ranges are not allowed in '%s'\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002290 file, linenum, args[0], args[1], args[2]);
2291 err_code |= ERR_ALERT | ERR_FATAL;
2292 goto out;
2293 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002294
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002295 /* save hostname and create associated name resolution */
Baptiste Assmann4f91f7e2017-05-03 12:09:54 +02002296 if (fqdn) {
Christopher Faulet67957bd2017-09-27 11:00:59 +02002297 if (fqdn[0] == '_') { /* SRV record */
Olivier Houchard8da5f982017-08-04 18:35:36 +02002298 /* Check if a SRV request already exists, and if not, create it */
Christopher Faulet67957bd2017-09-27 11:00:59 +02002299 if ((newsrv->srvrq = find_srvrq_by_name(fqdn, curproxy)) == NULL)
2300 newsrv->srvrq = new_dns_srvrq(newsrv, fqdn);
2301 if (newsrv->srvrq == NULL) {
Olivier Houchard8da5f982017-08-04 18:35:36 +02002302 err_code |= ERR_ALERT | ERR_FATAL;
2303 goto out;
Christopher Faulet67957bd2017-09-27 11:00:59 +02002304 }
2305 }
2306 else if (srv_prepare_for_resolution(newsrv, fqdn) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002307 ha_alert("parsing [%s:%d] : Can't create DNS resolution for server '%s'\n",
Christopher Faulet67957bd2017-09-27 11:00:59 +02002308 file, linenum, newsrv->id);
2309 err_code |= ERR_ALERT | ERR_FATAL;
2310 goto out;
Baptiste Assmann4f91f7e2017-05-03 12:09:54 +02002311 }
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002312 }
2313
Willy Tarreau272adea2014-03-31 10:39:59 +02002314 newsrv->addr = *sk;
Willy Tarreau6ecb10a2017-01-06 18:36:06 +01002315 newsrv->svc_port = port;
Willy Tarreau272adea2014-03-31 10:39:59 +02002316
Olivier Houchard8da5f982017-08-04 18:35:36 +02002317 if (!newsrv->srvrq && !newsrv->hostname && !protocol_by_family(newsrv->addr.ss_family)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002318 ha_alert("parsing [%s:%d] : Unknown protocol family %d '%s'\n",
Frédéric Lécailleb82f7422017-04-13 18:24:23 +02002319 file, linenum, newsrv->addr.ss_family, args[cur_arg]);
Willy Tarreau272adea2014-03-31 10:39:59 +02002320 err_code |= ERR_ALERT | ERR_FATAL;
2321 goto out;
2322 }
Frédéric Lécaille5c3cd972017-03-15 16:36:09 +01002323
Frédéric Lécaille355b2032019-01-11 14:06:12 +01002324 cur_arg++;
2325 skip_addr:
Frédéric Lécaille58b207c2017-03-30 14:18:30 +02002326 /* Copy default server settings to new server settings. */
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002327 srv_settings_cpy(newsrv, &curproxy->defsrv, 0);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002328 HA_SPIN_INIT(&newsrv->lock);
Willy Tarreau272adea2014-03-31 10:39:59 +02002329 } else {
2330 newsrv = &curproxy->defsrv;
2331 cur_arg = 1;
Thierry Fournierada34842016-02-17 21:25:09 +01002332 newsrv->dns_opts.family_prio = AF_INET6;
Baptiste Assmann8e2d9432018-06-22 15:04:43 +02002333 newsrv->dns_opts.accept_duplicate_ip = 0;
Willy Tarreau272adea2014-03-31 10:39:59 +02002334 }
2335
2336 while (*args[cur_arg]) {
Frédéric Lécaille6e0843c2017-03-21 16:39:15 +01002337 if (!strcmp(args[cur_arg], "agent-inter")) {
Willy Tarreau272adea2014-03-31 10:39:59 +02002338 const char *err = parse_time_err(args[cur_arg + 1], &val, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02002339
2340 if (err == PARSE_TIME_OVER) {
2341 ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s> of server %s, maximum value is 2147483647 ms (~24.8 days).\n",
2342 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2343 err_code |= ERR_ALERT | ERR_FATAL;
2344 goto out;
2345 }
2346 else if (err == PARSE_TIME_UNDER) {
2347 ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s> of server %s, minimum non-null value is 1 ms.\n",
2348 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2349 err_code |= ERR_ALERT | ERR_FATAL;
2350 goto out;
2351 }
2352 else if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002353 ha_alert("parsing [%s:%d] : unexpected character '%c' in 'agent-inter' argument of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002354 file, linenum, *err, newsrv->id);
2355 err_code |= ERR_ALERT | ERR_FATAL;
2356 goto out;
2357 }
2358 if (val <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002359 ha_alert("parsing [%s:%d]: invalid value %d for argument '%s' of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002360 file, linenum, val, args[cur_arg], newsrv->id);
2361 err_code |= ERR_ALERT | ERR_FATAL;
2362 goto out;
2363 }
2364 newsrv->agent.inter = val;
2365 cur_arg += 2;
2366 }
Misiekea849332017-01-09 09:39:51 +01002367 else if (!strcmp(args[cur_arg], "agent-addr")) {
2368 if(str2ip(args[cur_arg + 1], &newsrv->agent.addr) == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002369 ha_alert("parsing agent-addr failed. Check if %s is correct address.\n", args[cur_arg + 1]);
Misiekea849332017-01-09 09:39:51 +01002370 goto out;
2371 }
2372
2373 cur_arg += 2;
2374 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002375 else if (!strcmp(args[cur_arg], "agent-port")) {
2376 global.maxsock++;
2377 newsrv->agent.port = atol(args[cur_arg + 1]);
2378 cur_arg += 2;
2379 }
James Brown55f9ff12015-10-21 18:19:05 -07002380 else if (!strcmp(args[cur_arg], "agent-send")) {
2381 global.maxsock++;
2382 free(newsrv->agent.send_string);
2383 newsrv->agent.send_string_len = strlen(args[cur_arg + 1]);
2384 newsrv->agent.send_string = calloc(1, newsrv->agent.send_string_len + 1);
2385 memcpy(newsrv->agent.send_string, args[cur_arg + 1], newsrv->agent.send_string_len);
2386 cur_arg += 2;
2387 }
Baptiste Assmann25938272016-09-21 20:26:16 +02002388 else if (!strcmp(args[cur_arg], "init-addr")) {
2389 char *p, *end;
2390 int done;
Willy Tarreau4310d362016-11-02 15:05:56 +01002391 struct sockaddr_storage sa;
Baptiste Assmann25938272016-09-21 20:26:16 +02002392
2393 newsrv->init_addr_methods = 0;
2394 memset(&newsrv->init_addr, 0, sizeof(newsrv->init_addr));
2395
2396 for (p = args[cur_arg + 1]; *p; p = end) {
2397 /* cut on next comma */
2398 for (end = p; *end && *end != ','; end++);
2399 if (*end)
2400 *(end++) = 0;
2401
Willy Tarreau4310d362016-11-02 15:05:56 +01002402 memset(&sa, 0, sizeof(sa));
Baptiste Assmann25938272016-09-21 20:26:16 +02002403 if (!strcmp(p, "libc")) {
2404 done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_LIBC);
2405 }
2406 else if (!strcmp(p, "last")) {
2407 done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_LAST);
2408 }
Willy Tarreau37ebe122016-11-04 15:17:58 +01002409 else if (!strcmp(p, "none")) {
2410 done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_NONE);
2411 }
Willy Tarreau4310d362016-11-02 15:05:56 +01002412 else if (str2ip2(p, &sa, 0)) {
2413 if (is_addr(&newsrv->init_addr)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002414 ha_alert("parsing [%s:%d]: '%s' : initial address already specified, cannot add '%s'.\n",
Willy Tarreau4310d362016-11-02 15:05:56 +01002415 file, linenum, args[cur_arg], p);
2416 err_code |= ERR_ALERT | ERR_FATAL;
2417 goto out;
2418 }
2419 newsrv->init_addr = sa;
2420 done = srv_append_initaddr(&newsrv->init_addr_methods, SRV_IADDR_IP);
2421 }
Baptiste Assmann25938272016-09-21 20:26:16 +02002422 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002423 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 +02002424 file, linenum, args[cur_arg], p);
2425 err_code |= ERR_ALERT | ERR_FATAL;
2426 goto out;
2427 }
2428 if (!done) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002429 ha_alert("parsing [%s:%d]: '%s' : too many init-addr methods when trying to add '%s'\n",
Baptiste Assmann25938272016-09-21 20:26:16 +02002430 file, linenum, args[cur_arg], p);
2431 err_code |= ERR_ALERT | ERR_FATAL;
2432 goto out;
2433 }
2434 }
2435 cur_arg += 2;
2436 }
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002437 else if (!strcmp(args[cur_arg], "resolvers")) {
Frédéric Lécailledaa2fe62017-04-20 12:17:50 +02002438 free(newsrv->resolvers_id);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002439 newsrv->resolvers_id = strdup(args[cur_arg + 1]);
2440 cur_arg += 2;
2441 }
Baptiste Assmann8e2d9432018-06-22 15:04:43 +02002442 else if (!strcmp(args[cur_arg], "resolve-opts")) {
2443 char *p, *end;
2444
2445 for (p = args[cur_arg + 1]; *p; p = end) {
2446 /* cut on next comma */
2447 for (end = p; *end && *end != ','; end++);
2448 if (*end)
2449 *(end++) = 0;
2450
2451 if (!strcmp(p, "allow-dup-ip")) {
2452 newsrv->dns_opts.accept_duplicate_ip = 1;
2453 }
2454 else if (!strcmp(p, "prevent-dup-ip")) {
2455 newsrv->dns_opts.accept_duplicate_ip = 0;
2456 }
2457 else {
2458 ha_alert("parsing [%s:%d]: '%s' : unknown resolve-opts option '%s', supported methods are 'allow-dup-ip' and 'prevent-dup-ip'.\n",
2459 file, linenum, args[cur_arg], p);
2460 err_code |= ERR_ALERT | ERR_FATAL;
2461 goto out;
2462 }
2463 }
2464
2465 cur_arg += 2;
2466 }
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002467 else if (!strcmp(args[cur_arg], "resolve-prefer")) {
2468 if (!strcmp(args[cur_arg + 1], "ipv4"))
Thierry Fournierada34842016-02-17 21:25:09 +01002469 newsrv->dns_opts.family_prio = AF_INET;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002470 else if (!strcmp(args[cur_arg + 1], "ipv6"))
Thierry Fournierada34842016-02-17 21:25:09 +01002471 newsrv->dns_opts.family_prio = AF_INET6;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002472 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002473 ha_alert("parsing [%s:%d]: '%s' expects either ipv4 or ipv6 as argument.\n",
Baptiste Assmanna68ca962015-04-14 01:15:08 +02002474 file, linenum, args[cur_arg]);
2475 err_code |= ERR_ALERT | ERR_FATAL;
2476 goto out;
2477 }
2478 cur_arg += 2;
2479 }
Thierry Fournierac88cfe2016-02-17 22:05:30 +01002480 else if (!strcmp(args[cur_arg], "resolve-net")) {
2481 char *p, *e;
2482 unsigned char mask;
2483 struct dns_options *opt;
2484
2485 if (!args[cur_arg + 1] || args[cur_arg + 1][0] == '\0') {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002486 ha_alert("parsing [%s:%d]: '%s' expects a list of networks.\n",
Thierry Fournierac88cfe2016-02-17 22:05:30 +01002487 file, linenum, args[cur_arg]);
2488 err_code |= ERR_ALERT | ERR_FATAL;
2489 goto out;
2490 }
2491
2492 opt = &newsrv->dns_opts;
2493
2494 /* Split arguments by comma, and convert it from ipv4 or ipv6
2495 * string network in in_addr or in6_addr.
2496 */
2497 p = args[cur_arg + 1];
2498 e = p;
2499 while (*p != '\0') {
Joseph Herlant44466822018-11-15 08:57:51 -08002500 /* If no room available, return error. */
David Carlierd10025c2016-04-08 10:26:44 +01002501 if (opt->pref_net_nb >= SRV_MAX_PREF_NET) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002502 ha_alert("parsing [%s:%d]: '%s' exceed %d networks.\n",
Thierry Fournierac88cfe2016-02-17 22:05:30 +01002503 file, linenum, args[cur_arg], SRV_MAX_PREF_NET);
2504 err_code |= ERR_ALERT | ERR_FATAL;
2505 goto out;
2506 }
2507 /* look for end or comma. */
2508 while (*e != ',' && *e != '\0')
2509 e++;
2510 if (*e == ',') {
2511 *e = '\0';
2512 e++;
2513 }
2514 if (str2net(p, 0, &opt->pref_net[opt->pref_net_nb].addr.in4,
2515 &opt->pref_net[opt->pref_net_nb].mask.in4)) {
2516 /* Try to convert input string from ipv4 or ipv6 network. */
2517 opt->pref_net[opt->pref_net_nb].family = AF_INET;
2518 } else if (str62net(p, &opt->pref_net[opt->pref_net_nb].addr.in6,
2519 &mask)) {
2520 /* Try to convert input string from ipv6 network. */
2521 len2mask6(mask, &opt->pref_net[opt->pref_net_nb].mask.in6);
2522 opt->pref_net[opt->pref_net_nb].family = AF_INET6;
2523 } else {
2524 /* All network conversions fail, retrun error. */
Christopher Faulet767a84b2017-11-24 16:50:31 +01002525 ha_alert("parsing [%s:%d]: '%s': invalid network '%s'.\n",
Thierry Fournierac88cfe2016-02-17 22:05:30 +01002526 file, linenum, args[cur_arg], p);
2527 err_code |= ERR_ALERT | ERR_FATAL;
2528 goto out;
2529 }
2530 opt->pref_net_nb++;
2531 p = e;
2532 }
2533
2534 cur_arg += 2;
2535 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002536 else if (!strcmp(args[cur_arg], "rise")) {
2537 if (!*args[cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002538 ha_alert("parsing [%s:%d]: '%s' expects an integer argument.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002539 file, linenum, args[cur_arg]);
2540 err_code |= ERR_ALERT | ERR_FATAL;
2541 goto out;
2542 }
2543
2544 newsrv->check.rise = atol(args[cur_arg + 1]);
2545 if (newsrv->check.rise <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002546 ha_alert("parsing [%s:%d]: '%s' has to be > 0.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002547 file, linenum, args[cur_arg]);
2548 err_code |= ERR_ALERT | ERR_FATAL;
2549 goto out;
2550 }
2551
2552 if (newsrv->check.health)
2553 newsrv->check.health = newsrv->check.rise;
2554 cur_arg += 2;
2555 }
2556 else if (!strcmp(args[cur_arg], "fall")) {
2557 newsrv->check.fall = atol(args[cur_arg + 1]);
2558
2559 if (!*args[cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002560 ha_alert("parsing [%s:%d]: '%s' expects an integer argument.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002561 file, linenum, args[cur_arg]);
2562 err_code |= ERR_ALERT | ERR_FATAL;
2563 goto out;
2564 }
2565
2566 if (newsrv->check.fall <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002567 ha_alert("parsing [%s:%d]: '%s' has to be > 0.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002568 file, linenum, args[cur_arg]);
2569 err_code |= ERR_ALERT | ERR_FATAL;
2570 goto out;
2571 }
2572
2573 cur_arg += 2;
2574 }
2575 else if (!strcmp(args[cur_arg], "inter")) {
2576 const char *err = parse_time_err(args[cur_arg + 1], &val, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02002577
2578 if (err == PARSE_TIME_OVER) {
2579 ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s> of server %s, maximum value is 2147483647 ms (~24.8 days).\n",
2580 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2581 err_code |= ERR_ALERT | ERR_FATAL;
2582 goto out;
2583 }
2584 else if (err == PARSE_TIME_UNDER) {
2585 ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s> of server %s, minimum non-null value is 1 ms.\n",
2586 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2587 err_code |= ERR_ALERT | ERR_FATAL;
2588 goto out;
2589 }
2590 else if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002591 ha_alert("parsing [%s:%d] : unexpected character '%c' in 'inter' argument of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002592 file, linenum, *err, newsrv->id);
2593 err_code |= ERR_ALERT | ERR_FATAL;
2594 goto out;
2595 }
2596 if (val <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002597 ha_alert("parsing [%s:%d]: invalid value %d for argument '%s' of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002598 file, linenum, val, args[cur_arg], newsrv->id);
2599 err_code |= ERR_ALERT | ERR_FATAL;
2600 goto out;
2601 }
2602 newsrv->check.inter = val;
2603 cur_arg += 2;
2604 }
2605 else if (!strcmp(args[cur_arg], "fastinter")) {
2606 const char *err = parse_time_err(args[cur_arg + 1], &val, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02002607
2608 if (err == PARSE_TIME_OVER) {
2609 ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s> of server %s, maximum value is 2147483647 ms (~24.8 days).\n",
2610 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2611 err_code |= ERR_ALERT | ERR_FATAL;
2612 goto out;
2613 }
2614 else if (err == PARSE_TIME_UNDER) {
2615 ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s> of server %s, minimum non-null value is 1 ms.\n",
2616 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2617 err_code |= ERR_ALERT | ERR_FATAL;
2618 goto out;
2619 }
2620 else if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002621 ha_alert("parsing [%s:%d]: unexpected character '%c' in 'fastinter' argument of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002622 file, linenum, *err, newsrv->id);
2623 err_code |= ERR_ALERT | ERR_FATAL;
2624 goto out;
2625 }
2626 if (val <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002627 ha_alert("parsing [%s:%d]: invalid value %d for argument '%s' of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002628 file, linenum, val, args[cur_arg], newsrv->id);
2629 err_code |= ERR_ALERT | ERR_FATAL;
2630 goto out;
2631 }
2632 newsrv->check.fastinter = val;
2633 cur_arg += 2;
2634 }
2635 else if (!strcmp(args[cur_arg], "downinter")) {
2636 const char *err = parse_time_err(args[cur_arg + 1], &val, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02002637
2638 if (err == PARSE_TIME_OVER) {
2639 ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s> of server %s, maximum value is 2147483647 ms (~24.8 days).\n",
2640 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2641 err_code |= ERR_ALERT | ERR_FATAL;
2642 goto out;
2643 }
2644 else if (err == PARSE_TIME_UNDER) {
2645 ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s> of server %s, minimum non-null value is 1 ms.\n",
2646 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2647 err_code |= ERR_ALERT | ERR_FATAL;
2648 goto out;
2649 }
2650 else if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002651 ha_alert("parsing [%s:%d]: unexpected character '%c' in 'downinter' argument of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002652 file, linenum, *err, newsrv->id);
2653 err_code |= ERR_ALERT | ERR_FATAL;
2654 goto out;
2655 }
2656 if (val <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002657 ha_alert("parsing [%s:%d]: invalid value %d for argument '%s' of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002658 file, linenum, val, args[cur_arg], newsrv->id);
2659 err_code |= ERR_ALERT | ERR_FATAL;
2660 goto out;
2661 }
2662 newsrv->check.downinter = val;
2663 cur_arg += 2;
2664 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002665 else if (!strcmp(args[cur_arg], "port")) {
2666 newsrv->check.port = atol(args[cur_arg + 1]);
Baptiste Assmann6b453f12016-08-11 23:12:18 +02002667 newsrv->flags |= SRV_F_CHECKPORT;
Willy Tarreau272adea2014-03-31 10:39:59 +02002668 cur_arg += 2;
2669 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002670 else if (!strcmp(args[cur_arg], "weight")) {
2671 int w;
2672 w = atol(args[cur_arg + 1]);
2673 if (w < 0 || w > SRV_UWGHT_MAX) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002674 ha_alert("parsing [%s:%d] : weight of server %s is not within 0 and %d (%d).\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002675 file, linenum, newsrv->id, SRV_UWGHT_MAX, w);
2676 err_code |= ERR_ALERT | ERR_FATAL;
2677 goto out;
2678 }
2679 newsrv->uweight = newsrv->iweight = w;
2680 cur_arg += 2;
2681 }
2682 else if (!strcmp(args[cur_arg], "minconn")) {
2683 newsrv->minconn = atol(args[cur_arg + 1]);
2684 cur_arg += 2;
2685 }
2686 else if (!strcmp(args[cur_arg], "maxconn")) {
2687 newsrv->maxconn = atol(args[cur_arg + 1]);
2688 cur_arg += 2;
2689 }
2690 else if (!strcmp(args[cur_arg], "maxqueue")) {
2691 newsrv->maxqueue = atol(args[cur_arg + 1]);
2692 cur_arg += 2;
2693 }
2694 else if (!strcmp(args[cur_arg], "slowstart")) {
2695 /* slowstart is stored in seconds */
2696 const char *err = parse_time_err(args[cur_arg + 1], &val, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02002697
2698 if (err == PARSE_TIME_OVER) {
2699 ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s> of server %s, maximum value is 2147483647 ms (~24.8 days).\n",
2700 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2701 err_code |= ERR_ALERT | ERR_FATAL;
2702 goto out;
2703 }
2704 else if (err == PARSE_TIME_UNDER) {
2705 ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s> of server %s, minimum non-null value is 1 ms.\n",
2706 file, linenum, args[cur_arg+1], args[cur_arg], newsrv->id);
2707 err_code |= ERR_ALERT | ERR_FATAL;
2708 goto out;
2709 }
2710 else if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002711 ha_alert("parsing [%s:%d] : unexpected character '%c' in 'slowstart' argument of server %s.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002712 file, linenum, *err, newsrv->id);
2713 err_code |= ERR_ALERT | ERR_FATAL;
2714 goto out;
2715 }
2716 newsrv->slowstart = (val + 999) / 1000;
2717 cur_arg += 2;
2718 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002719 else if (!strcmp(args[cur_arg], "on-error")) {
2720 if (!strcmp(args[cur_arg + 1], "fastinter"))
2721 newsrv->onerror = HANA_ONERR_FASTINTER;
2722 else if (!strcmp(args[cur_arg + 1], "fail-check"))
2723 newsrv->onerror = HANA_ONERR_FAILCHK;
2724 else if (!strcmp(args[cur_arg + 1], "sudden-death"))
2725 newsrv->onerror = HANA_ONERR_SUDDTH;
2726 else if (!strcmp(args[cur_arg + 1], "mark-down"))
2727 newsrv->onerror = HANA_ONERR_MARKDWN;
2728 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002729 ha_alert("parsing [%s:%d]: '%s' expects one of 'fastinter', "
Willy Tarreau272adea2014-03-31 10:39:59 +02002730 "'fail-check', 'sudden-death' or 'mark-down' but got '%s'\n",
2731 file, linenum, args[cur_arg], args[cur_arg + 1]);
2732 err_code |= ERR_ALERT | ERR_FATAL;
2733 goto out;
2734 }
2735
2736 cur_arg += 2;
2737 }
2738 else if (!strcmp(args[cur_arg], "on-marked-down")) {
2739 if (!strcmp(args[cur_arg + 1], "shutdown-sessions"))
2740 newsrv->onmarkeddown = HANA_ONMARKEDDOWN_SHUTDOWNSESSIONS;
2741 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002742 ha_alert("parsing [%s:%d]: '%s' expects 'shutdown-sessions' but got '%s'\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002743 file, linenum, args[cur_arg], args[cur_arg + 1]);
2744 err_code |= ERR_ALERT | ERR_FATAL;
2745 goto out;
2746 }
2747
2748 cur_arg += 2;
2749 }
2750 else if (!strcmp(args[cur_arg], "on-marked-up")) {
2751 if (!strcmp(args[cur_arg + 1], "shutdown-backup-sessions"))
2752 newsrv->onmarkedup = HANA_ONMARKEDUP_SHUTDOWNBACKUPSESSIONS;
2753 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002754 ha_alert("parsing [%s:%d]: '%s' expects 'shutdown-backup-sessions' but got '%s'\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002755 file, linenum, args[cur_arg], args[cur_arg + 1]);
2756 err_code |= ERR_ALERT | ERR_FATAL;
2757 goto out;
2758 }
2759
2760 cur_arg += 2;
2761 }
2762 else if (!strcmp(args[cur_arg], "error-limit")) {
2763 if (!*args[cur_arg + 1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002764 ha_alert("parsing [%s:%d]: '%s' expects an integer argument.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002765 file, linenum, args[cur_arg]);
2766 err_code |= ERR_ALERT | ERR_FATAL;
2767 goto out;
2768 }
2769
2770 newsrv->consecutive_errors_limit = atoi(args[cur_arg + 1]);
2771
2772 if (newsrv->consecutive_errors_limit <= 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002773 ha_alert("parsing [%s:%d]: %s has to be > 0.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002774 file, linenum, args[cur_arg]);
2775 err_code |= ERR_ALERT | ERR_FATAL;
2776 goto out;
2777 }
2778 cur_arg += 2;
2779 }
Frédéric Lécaille8d083ed2017-04-14 15:19:56 +02002780 else if (!strcmp(args[cur_arg], "usesrc")) { /* address to use outside: needs "source" first */
Christopher Faulet767a84b2017-11-24 16:50:31 +01002781 ha_alert("parsing [%s:%d] : '%s' only allowed after a '%s' statement.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002782 file, linenum, "usesrc", "source");
2783 err_code |= ERR_ALERT | ERR_FATAL;
2784 goto out;
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002785 }
Willy Tarreau272adea2014-03-31 10:39:59 +02002786 else {
2787 static int srv_dumped;
2788 struct srv_kw *kw;
2789 char *err;
2790
2791 kw = srv_find_kw(args[cur_arg]);
2792 if (kw) {
2793 char *err = NULL;
2794 int code;
2795
2796 if (!kw->parse) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002797 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 +02002798 file, linenum, args[0], args[1], args[cur_arg]);
Frédéric Lécailledfacd692017-04-16 17:14:14 +02002799 if (kw->skip != -1)
2800 cur_arg += 1 + kw->skip ;
Willy Tarreau272adea2014-03-31 10:39:59 +02002801 err_code |= ERR_ALERT | ERR_FATAL;
2802 goto out;
2803 }
2804
2805 if (defsrv && !kw->default_ok) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002806 ha_alert("parsing [%s:%d] : '%s %s' : '%s' option is not accepted in default-server sections.\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002807 file, linenum, args[0], args[1], args[cur_arg]);
Frédéric Lécailledfacd692017-04-16 17:14:14 +02002808 if (kw->skip != -1)
2809 cur_arg += 1 + kw->skip ;
Willy Tarreau272adea2014-03-31 10:39:59 +02002810 err_code |= ERR_ALERT;
2811 continue;
2812 }
2813
2814 code = kw->parse(args, &cur_arg, curproxy, newsrv, &err);
2815 err_code |= code;
2816
2817 if (code) {
Frédéric Lécaille9a146de2017-03-20 14:54:41 +01002818 display_parser_err(file, linenum, args, cur_arg, &err);
Willy Tarreau272adea2014-03-31 10:39:59 +02002819 if (code & ERR_FATAL) {
2820 free(err);
Frédéric Lécailledfacd692017-04-16 17:14:14 +02002821 if (kw->skip != -1)
2822 cur_arg += 1 + kw->skip;
Willy Tarreau272adea2014-03-31 10:39:59 +02002823 goto out;
2824 }
2825 }
2826 free(err);
Frédéric Lécailledfacd692017-04-16 17:14:14 +02002827 if (kw->skip != -1)
2828 cur_arg += 1 + kw->skip;
Willy Tarreau272adea2014-03-31 10:39:59 +02002829 continue;
2830 }
2831
2832 err = NULL;
2833 if (!srv_dumped) {
2834 srv_dump_kws(&err);
2835 indent_msg(&err, 4);
2836 srv_dumped = 1;
2837 }
2838
Christopher Faulet767a84b2017-11-24 16:50:31 +01002839 ha_alert("parsing [%s:%d] : '%s %s' unknown keyword '%s'.%s%s\n",
Willy Tarreau272adea2014-03-31 10:39:59 +02002840 file, linenum, args[0], args[1], args[cur_arg],
2841 err ? " Registered keywords :" : "", err ? err : "");
2842 free(err);
2843
2844 err_code |= ERR_ALERT | ERR_FATAL;
2845 goto out;
2846 }
2847 }
2848
Frédéric Lécaille759ea982017-03-30 17:32:36 +02002849 if (!defsrv)
2850 err_code |= server_finalize_init(file, linenum, args, cur_arg, newsrv, curproxy);
2851 if (err_code & ERR_FATAL)
2852 goto out;
Frédéric Lécaille72ed4752017-04-14 13:28:00 +02002853 if (srv_tmpl)
2854 server_template_init(newsrv, curproxy);
Willy Tarreau272adea2014-03-31 10:39:59 +02002855 }
Willy Tarreau07101d52015-09-08 16:16:35 +02002856 free(fqdn);
Willy Tarreau272adea2014-03-31 10:39:59 +02002857 return 0;
2858
2859 out:
Willy Tarreau07101d52015-09-08 16:16:35 +02002860 free(fqdn);
Willy Tarreau272adea2014-03-31 10:39:59 +02002861 free(errmsg);
2862 return err_code;
2863}
2864
Baptiste Assmann19a106d2015-07-08 22:03:56 +02002865/* Returns a pointer to the first server matching either id <id>.
2866 * NULL is returned if no match is found.
2867 * the lookup is performed in the backend <bk>
2868 */
2869struct server *server_find_by_id(struct proxy *bk, int id)
2870{
2871 struct eb32_node *eb32;
2872 struct server *curserver;
2873
2874 if (!bk || (id ==0))
2875 return NULL;
2876
2877 /* <bk> has no backend capabilities, so it can't have a server */
2878 if (!(bk->cap & PR_CAP_BE))
2879 return NULL;
2880
2881 curserver = NULL;
2882
2883 eb32 = eb32_lookup(&bk->conf.used_server_id, id);
2884 if (eb32)
2885 curserver = container_of(eb32, struct server, conf.id);
2886
2887 return curserver;
2888}
2889
2890/* Returns a pointer to the first server matching either name <name>, or id
2891 * if <name> starts with a '#'. NULL is returned if no match is found.
2892 * the lookup is performed in the backend <bk>
2893 */
2894struct server *server_find_by_name(struct proxy *bk, const char *name)
2895{
2896 struct server *curserver;
2897
2898 if (!bk || !name)
2899 return NULL;
2900
2901 /* <bk> has no backend capabilities, so it can't have a server */
2902 if (!(bk->cap & PR_CAP_BE))
2903 return NULL;
2904
2905 curserver = NULL;
2906 if (*name == '#') {
2907 curserver = server_find_by_id(bk, atoi(name + 1));
2908 if (curserver)
2909 return curserver;
2910 }
2911 else {
2912 curserver = bk->srv;
2913
2914 while (curserver && (strcmp(curserver->id, name) != 0))
2915 curserver = curserver->next;
2916
2917 if (curserver)
2918 return curserver;
2919 }
2920
2921 return NULL;
2922}
2923
2924struct server *server_find_best_match(struct proxy *bk, char *name, int id, int *diff)
2925{
2926 struct server *byname;
2927 struct server *byid;
2928
2929 if (!name && !id)
2930 return NULL;
2931
2932 if (diff)
2933 *diff = 0;
2934
2935 byname = byid = NULL;
2936
2937 if (name) {
2938 byname = server_find_by_name(bk, name);
2939 if (byname && (!id || byname->puid == id))
2940 return byname;
2941 }
2942
2943 /* remaining possibilities :
2944 * - name not set
2945 * - name set but not found
2946 * - name found but ID doesn't match
2947 */
2948 if (id) {
2949 byid = server_find_by_id(bk, id);
2950 if (byid) {
2951 if (byname) {
2952 /* use id only if forced by configuration */
2953 if (byid->flags & SRV_F_FORCED_ID) {
2954 if (diff)
2955 *diff |= 2;
2956 return byid;
2957 }
2958 else {
2959 if (diff)
2960 *diff |= 1;
2961 return byname;
2962 }
2963 }
2964
2965 /* remaining possibilities:
2966 * - name not set
2967 * - name set but not found
2968 */
2969 if (name && diff)
2970 *diff |= 2;
2971 return byid;
2972 }
2973
2974 /* id bot found */
2975 if (byname) {
2976 if (diff)
2977 *diff |= 1;
2978 return byname;
2979 }
2980 }
2981
2982 return NULL;
2983}
2984
Willy Tarreau46b7f532018-08-21 11:54:26 +02002985/* Update a server state using the parameters available in the params list.
2986 *
2987 * Grabs the server lock during operation.
2988 */
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002989static void srv_update_state(struct server *srv, int version, char **params)
2990{
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002991 char *p;
Willy Tarreau83061a82018-07-13 11:56:34 +02002992 struct buffer *msg;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002993
2994 /* fields since version 1
2995 * and common to all other upcoming versions
2996 */
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02002997 enum srv_state srv_op_state;
2998 enum srv_admin srv_admin_state;
2999 unsigned srv_uweight, srv_iweight;
3000 unsigned long srv_last_time_change;
3001 short srv_check_status;
3002 enum chk_result srv_check_result;
3003 int srv_check_health;
3004 int srv_check_state, srv_agent_state;
3005 int bk_f_forced_id;
3006 int srv_f_forced_id;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003007 int fqdn_set_by_cli;
3008 const char *fqdn;
Frédéric Lécaille31694712017-08-01 08:47:19 +02003009 const char *port_str;
3010 unsigned int port;
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02003011 char *srvrecord;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003012
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003013 fqdn = NULL;
Frédéric Lécaille31694712017-08-01 08:47:19 +02003014 port = 0;
Willy Tarreau31138fa2015-09-29 18:38:47 +02003015 msg = get_trash_chunk();
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003016 switch (version) {
3017 case 1:
3018 /*
3019 * now we can proceed with server's state update:
3020 * srv_addr: params[0]
3021 * srv_op_state: params[1]
3022 * srv_admin_state: params[2]
3023 * srv_uweight: params[3]
3024 * srv_iweight: params[4]
3025 * srv_last_time_change: params[5]
3026 * srv_check_status: params[6]
3027 * srv_check_result: params[7]
3028 * srv_check_health: params[8]
3029 * srv_check_state: params[9]
3030 * srv_agent_state: params[10]
3031 * bk_f_forced_id: params[11]
3032 * srv_f_forced_id: params[12]
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003033 * srv_fqdn: params[13]
Frédéric Lécaille31694712017-08-01 08:47:19 +02003034 * srv_port: params[14]
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02003035 * srvrecord: params[15]
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003036 */
3037
3038 /* validating srv_op_state */
3039 p = NULL;
3040 errno = 0;
3041 srv_op_state = strtol(params[1], &p, 10);
3042 if ((p == params[1]) || errno == EINVAL || errno == ERANGE ||
3043 (srv_op_state != SRV_ST_STOPPED &&
3044 srv_op_state != SRV_ST_STARTING &&
3045 srv_op_state != SRV_ST_RUNNING &&
3046 srv_op_state != SRV_ST_STOPPING)) {
3047 chunk_appendf(msg, ", invalid srv_op_state value '%s'", params[1]);
3048 }
3049
3050 /* validating srv_admin_state */
3051 p = NULL;
3052 errno = 0;
3053 srv_admin_state = strtol(params[2], &p, 10);
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003054 fqdn_set_by_cli = !!(srv_admin_state & SRV_ADMF_HMAINT);
Willy Tarreau757478e2016-11-03 19:22:19 +01003055
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003056 /* inherited statuses will be recomputed later.
3057 * Also disable SRV_ADMF_HMAINT flag (set from stats socket fqdn).
3058 */
3059 srv_admin_state &= ~SRV_ADMF_IDRAIN & ~SRV_ADMF_IMAINT & ~SRV_ADMF_HMAINT;
Willy Tarreau757478e2016-11-03 19:22:19 +01003060
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003061 if ((p == params[2]) || errno == EINVAL || errno == ERANGE ||
3062 (srv_admin_state != 0 &&
3063 srv_admin_state != SRV_ADMF_FMAINT &&
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003064 srv_admin_state != SRV_ADMF_CMAINT &&
3065 srv_admin_state != (SRV_ADMF_CMAINT | SRV_ADMF_FMAINT) &&
Willy Tarreaue1bde142016-11-03 18:33:25 +01003066 srv_admin_state != (SRV_ADMF_CMAINT | SRV_ADMF_FDRAIN) &&
Willy Tarreau757478e2016-11-03 19:22:19 +01003067 srv_admin_state != SRV_ADMF_FDRAIN)) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003068 chunk_appendf(msg, ", invalid srv_admin_state value '%s'", params[2]);
3069 }
3070
3071 /* validating srv_uweight */
3072 p = NULL;
3073 errno = 0;
3074 srv_uweight = strtol(params[3], &p, 10);
Willy Tarreaue1aebb22015-09-29 18:32:57 +02003075 if ((p == params[3]) || errno == EINVAL || errno == ERANGE || (srv_uweight > SRV_UWGHT_MAX))
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003076 chunk_appendf(msg, ", invalid srv_uweight value '%s'", params[3]);
3077
3078 /* validating srv_iweight */
3079 p = NULL;
3080 errno = 0;
3081 srv_iweight = strtol(params[4], &p, 10);
Willy Tarreaue1aebb22015-09-29 18:32:57 +02003082 if ((p == params[4]) || errno == EINVAL || errno == ERANGE || (srv_iweight > SRV_UWGHT_MAX))
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003083 chunk_appendf(msg, ", invalid srv_iweight value '%s'", params[4]);
3084
3085 /* validating srv_last_time_change */
3086 p = NULL;
3087 errno = 0;
3088 srv_last_time_change = strtol(params[5], &p, 10);
3089 if ((p == params[5]) || errno == EINVAL || errno == ERANGE)
3090 chunk_appendf(msg, ", invalid srv_last_time_change value '%s'", params[5]);
3091
3092 /* validating srv_check_status */
3093 p = NULL;
3094 errno = 0;
3095 srv_check_status = strtol(params[6], &p, 10);
3096 if (p == params[6] || errno == EINVAL || errno == ERANGE ||
3097 (srv_check_status >= HCHK_STATUS_SIZE))
3098 chunk_appendf(msg, ", invalid srv_check_status value '%s'", params[6]);
3099
3100 /* validating srv_check_result */
3101 p = NULL;
3102 errno = 0;
3103 srv_check_result = strtol(params[7], &p, 10);
3104 if ((p == params[7]) || errno == EINVAL || errno == ERANGE ||
3105 (srv_check_result != CHK_RES_UNKNOWN &&
3106 srv_check_result != CHK_RES_NEUTRAL &&
3107 srv_check_result != CHK_RES_FAILED &&
3108 srv_check_result != CHK_RES_PASSED &&
3109 srv_check_result != CHK_RES_CONDPASS)) {
3110 chunk_appendf(msg, ", invalid srv_check_result value '%s'", params[7]);
3111 }
3112
3113 /* validating srv_check_health */
3114 p = NULL;
3115 errno = 0;
3116 srv_check_health = strtol(params[8], &p, 10);
3117 if (p == params[8] || errno == EINVAL || errno == ERANGE)
3118 chunk_appendf(msg, ", invalid srv_check_health value '%s'", params[8]);
3119
3120 /* validating srv_check_state */
3121 p = NULL;
3122 errno = 0;
3123 srv_check_state = strtol(params[9], &p, 10);
3124 if (p == params[9] || errno == EINVAL || errno == ERANGE ||
3125 (srv_check_state & ~(CHK_ST_INPROGRESS | CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_PAUSED | CHK_ST_AGENT)))
3126 chunk_appendf(msg, ", invalid srv_check_state value '%s'", params[9]);
3127
3128 /* validating srv_agent_state */
3129 p = NULL;
3130 errno = 0;
3131 srv_agent_state = strtol(params[10], &p, 10);
3132 if (p == params[10] || errno == EINVAL || errno == ERANGE ||
3133 (srv_agent_state & ~(CHK_ST_INPROGRESS | CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_PAUSED | CHK_ST_AGENT)))
3134 chunk_appendf(msg, ", invalid srv_agent_state value '%s'", params[10]);
3135
3136 /* validating bk_f_forced_id */
3137 p = NULL;
3138 errno = 0;
3139 bk_f_forced_id = strtol(params[11], &p, 10);
3140 if (p == params[11] || errno == EINVAL || errno == ERANGE || !((bk_f_forced_id == 0) || (bk_f_forced_id == 1)))
3141 chunk_appendf(msg, ", invalid bk_f_forced_id value '%s'", params[11]);
3142
3143 /* validating srv_f_forced_id */
3144 p = NULL;
3145 errno = 0;
3146 srv_f_forced_id = strtol(params[12], &p, 10);
3147 if (p == params[12] || errno == EINVAL || errno == ERANGE || !((srv_f_forced_id == 0) || (srv_f_forced_id == 1)))
3148 chunk_appendf(msg, ", invalid srv_f_forced_id value '%s'", params[12]);
3149
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003150 /* validating srv_fqdn */
3151 fqdn = params[13];
3152 if (fqdn && *fqdn == '-')
3153 fqdn = NULL;
3154 if (fqdn && (strlen(fqdn) > DNS_MAX_NAME_SIZE || invalid_domainchar(fqdn))) {
3155 chunk_appendf(msg, ", invalid srv_fqdn value '%s'", params[13]);
3156 fqdn = NULL;
3157 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003158
Frédéric Lécaille31694712017-08-01 08:47:19 +02003159 port_str = params[14];
3160 if (port_str) {
3161 port = strl2uic(port_str, strlen(port_str));
3162 if (port > USHRT_MAX) {
3163 chunk_appendf(msg, ", invalid srv_port value '%s'", port_str);
3164 port_str = NULL;
3165 }
3166 }
3167
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02003168 /* SRV record
3169 * NOTE: in HAProxy, SRV records must start with an underscore '_'
3170 */
3171 srvrecord = params[15];
3172 if (srvrecord && *srvrecord != '_')
3173 srvrecord = NULL;
3174
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003175 /* don't apply anything if one error has been detected */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003176 if (msg->data)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003177 goto out;
3178
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003179 HA_SPIN_LOCK(SERVER_LOCK, &srv->lock);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003180 /* recover operational state and apply it to this server
3181 * and all servers tracking this one */
Jérôme Magninf57afa42019-01-20 11:27:40 +01003182 srv->check.health = srv_check_health;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003183 switch (srv_op_state) {
3184 case SRV_ST_STOPPED:
3185 srv->check.health = 0;
Emeric Brun5a133512017-10-19 14:42:30 +02003186 srv_set_stopped(srv, "changed from server-state after a reload", NULL);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003187 break;
3188 case SRV_ST_STARTING:
Jérôme Magninf57afa42019-01-20 11:27:40 +01003189 /* If rise == 1 there is no STARTING state, let's switch to
3190 * RUNNING
3191 */
3192 if (srv->check.rise == 1) {
3193 srv->check.health = srv->check.rise + srv->check.fall - 1;
3194 srv_set_running(srv, "", NULL);
3195 break;
3196 }
3197 if (srv->check.health < 1 || srv->check.health >= srv->check.rise)
3198 srv->check.health = srv->check.rise - 1;
Emeric Brun52a91d32017-08-31 14:41:55 +02003199 srv->next_state = srv_op_state;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003200 break;
3201 case SRV_ST_STOPPING:
Jérôme Magninf57afa42019-01-20 11:27:40 +01003202 /* If fall == 1 there is no STOPPING state, let's switch to
3203 * STOPPED
3204 */
3205 if (srv->check.fall == 1) {
3206 srv->check.health = 0;
3207 srv_set_stopped(srv, "changed from server-state after a reload", NULL);
3208 break;
3209 }
3210 if (srv->check.health < srv->check.rise ||
3211 srv->check.health > srv->check.rise + srv->check.fall - 2)
3212 srv->check.health = srv->check.rise;
Emeric Brun5a133512017-10-19 14:42:30 +02003213 srv_set_stopping(srv, "changed from server-state after a reload", NULL);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003214 break;
3215 case SRV_ST_RUNNING:
3216 srv->check.health = srv->check.rise + srv->check.fall - 1;
Emeric Brun5a133512017-10-19 14:42:30 +02003217 srv_set_running(srv, "", NULL);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003218 break;
3219 }
3220
3221 /* When applying server state, the following rules apply:
3222 * - in case of a configuration change, we apply the setting from the new
3223 * configuration, regardless of old running state
3224 * - if no configuration change, we apply old running state only if old running
3225 * state is different from new configuration state
3226 */
3227 /* configuration has changed */
Emeric Brun52a91d32017-08-31 14:41:55 +02003228 if ((srv_admin_state & SRV_ADMF_CMAINT) != (srv->next_admin & SRV_ADMF_CMAINT)) {
3229 if (srv->next_admin & SRV_ADMF_CMAINT)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003230 srv_adm_set_maint(srv);
3231 else
3232 srv_adm_set_ready(srv);
3233 }
3234 /* configuration is the same, let's compate old running state and new conf state */
3235 else {
Emeric Brun52a91d32017-08-31 14:41:55 +02003236 if (srv_admin_state & SRV_ADMF_FMAINT && !(srv->next_admin & SRV_ADMF_CMAINT))
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003237 srv_adm_set_maint(srv);
Emeric Brun52a91d32017-08-31 14:41:55 +02003238 else if (!(srv_admin_state & SRV_ADMF_FMAINT) && (srv->next_admin & SRV_ADMF_CMAINT))
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003239 srv_adm_set_ready(srv);
3240 }
3241 /* apply drain mode if server is currently enabled */
Emeric Brun52a91d32017-08-31 14:41:55 +02003242 if (!(srv->next_admin & SRV_ADMF_FMAINT) && (srv_admin_state & SRV_ADMF_FDRAIN)) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003243 /* The SRV_ADMF_FDRAIN flag is inherited when srv->iweight is 0
Willy Tarreau22cace22016-11-03 18:19:49 +01003244 * (srv->iweight is the weight set up in configuration).
3245 * There are two possible reasons for FDRAIN to have been present :
3246 * - previous config weight was zero
3247 * - "set server b/s drain" was sent to the CLI
3248 *
3249 * In the first case, we simply want to drop this drain state
3250 * if the new weight is not zero anymore, meaning the administrator
3251 * has intentionally turned the weight back to a positive value to
3252 * enable the server again after an operation. In the second case,
3253 * the drain state was forced on the CLI regardless of the config's
3254 * weight so we don't want a change to the config weight to lose this
3255 * status. What this means is :
3256 * - if previous weight was 0 and new one is >0, drop the DRAIN state.
3257 * - if the previous weight was >0, keep it.
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003258 */
Willy Tarreau22cace22016-11-03 18:19:49 +01003259 if (srv_iweight > 0 || srv->iweight == 0)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003260 srv_adm_set_drain(srv);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003261 }
3262
3263 srv->last_change = date.tv_sec - srv_last_time_change;
3264 srv->check.status = srv_check_status;
3265 srv->check.result = srv_check_result;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003266
3267 /* Only case we want to apply is removing ENABLED flag which could have been
3268 * done by the "disable health" command over the stats socket
3269 */
3270 if ((srv->check.state & CHK_ST_CONFIGURED) &&
3271 (srv_check_state & CHK_ST_CONFIGURED) &&
3272 !(srv_check_state & CHK_ST_ENABLED))
3273 srv->check.state &= ~CHK_ST_ENABLED;
3274
3275 /* Only case we want to apply is removing ENABLED flag which could have been
3276 * done by the "disable agent" command over the stats socket
3277 */
3278 if ((srv->agent.state & CHK_ST_CONFIGURED) &&
3279 (srv_agent_state & CHK_ST_CONFIGURED) &&
3280 !(srv_agent_state & CHK_ST_ENABLED))
3281 srv->agent.state &= ~CHK_ST_ENABLED;
3282
Baptiste Assmann6076d1c2015-09-17 22:53:59 +02003283 /* We want to apply the previous 'running' weight (srv_uweight) only if there
3284 * was no change in the configuration: both previous and new iweight are equals
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003285 *
Baptiste Assmann6076d1c2015-09-17 22:53:59 +02003286 * It means that a configuration file change has precedence over a unix socket change
3287 * for server's weight
3288 *
3289 * by default, HAProxy applies the following weight when parsing the configuration
3290 * srv->uweight = srv->iweight
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003291 */
Baptiste Assmann6076d1c2015-09-17 22:53:59 +02003292 if (srv_iweight == srv->iweight) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003293 srv->uweight = srv_uweight;
3294 }
Willy Tarreau3ff577e2018-08-02 11:48:52 +02003295 server_recalc_eweight(srv, 1);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003296
Willy Tarreaue5a60682016-11-09 14:54:53 +01003297 /* load server IP address */
Daniel Corbett9215ffa2018-05-19 19:43:24 -04003298 if (strcmp(params[0], "-"))
3299 srv->lastaddr = strdup(params[0]);
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003300
3301 if (fqdn && srv->hostname) {
3302 if (!strcmp(srv->hostname, fqdn)) {
3303 /* Here we reset the 'set from stats socket FQDN' flag
3304 * to support such transitions:
3305 * Let's say initial FQDN value is foo1 (in configuration file).
3306 * - FQDN changed from stats socket, from foo1 to foo2 value,
3307 * - FQDN changed again from file configuration (with the same previous value
3308 set from stats socket, from foo1 to foo2 value),
3309 * - reload for any other reason than a FQDN modification,
3310 * the configuration file FQDN matches the fqdn server state file value.
3311 * So we must reset the 'set from stats socket FQDN' flag to be consistent with
Joseph Herlant44466822018-11-15 08:57:51 -08003312 * any further FQDN modification.
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003313 */
Emeric Brun52a91d32017-08-31 14:41:55 +02003314 srv->next_admin &= ~SRV_ADMF_HMAINT;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003315 }
3316 else {
3317 /* If the FDQN has been changed from stats socket,
3318 * apply fqdn state file value (which is the value set
3319 * from stats socket).
3320 */
3321 if (fqdn_set_by_cli) {
Olivier Houchardd16bfe62017-10-31 15:21:19 +01003322 srv_set_fqdn(srv, fqdn, 0);
Emeric Brun52a91d32017-08-31 14:41:55 +02003323 srv->next_admin |= SRV_ADMF_HMAINT;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003324 }
3325 }
3326 }
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02003327 /* If all the conditions below are validated, this means
3328 * we're evaluating a server managed by SRV resolution
3329 */
3330 else if (fqdn && !srv->hostname && srvrecord) {
3331 int res;
3332
3333 /* we can't apply previous state if SRV record has changed */
3334 if (srv->srvrq && strcmp(srv->srvrq->name, srvrecord) != 0) {
3335 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);
3336 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
3337 goto out;
3338 }
3339
3340 /* create or find a SRV resolution for this srv record */
3341 if (srv->srvrq == NULL && (srv->srvrq = find_srvrq_by_name(srvrecord, srv->proxy)) == NULL)
3342 srv->srvrq = new_dns_srvrq(srv, srvrecord);
3343 if (srv->srvrq == NULL) {
3344 chunk_appendf(msg, ", can't create or find SRV resolution '%s' for server '%s'", srvrecord, srv->id);
3345 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
3346 goto out;
3347 }
3348
3349 /* prepare DNS resolution for this server */
3350 res = srv_prepare_for_resolution(srv, fqdn);
3351 if (res == -1) {
3352 chunk_appendf(msg, ", can't allocate memory for DNS resolution for server '%s'", srv->id);
3353 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
3354 goto out;
3355 }
3356
3357 /* configure check.port accordingly */
3358 if ((srv->check.state & CHK_ST_CONFIGURED) &&
3359 !(srv->flags & SRV_F_CHECKPORT))
3360 srv->check.port = port;
3361
3362 /* Unset SRV_F_MAPPORTS for SRV records.
3363 * SRV_F_MAPPORTS is unfortunately set by parse_server()
3364 * because no ports are provided in the configuration file.
3365 * This is because HAProxy will use the port found into the SRV record.
3366 */
3367 srv->flags &= ~SRV_F_MAPPORTS;
3368 }
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003369
Frédéric Lécaille31694712017-08-01 08:47:19 +02003370 if (port_str)
3371 srv->svc_port = port;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003372 HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
Frédéric Lécaille31694712017-08-01 08:47:19 +02003373
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003374 break;
3375 default:
3376 chunk_appendf(msg, ", version '%d' not supported", version);
3377 }
3378
3379 out:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003380 if (msg->data) {
Baptiste Assmann0821bb92016-01-21 00:20:50 +01003381 chunk_appendf(msg, "\n");
Christopher Faulet767a84b2017-11-24 16:50:31 +01003382 ha_warning("server-state application failed for server '%s/%s'%s",
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003383 srv->proxy->id, srv->id, msg->area);
Baptiste Assmann0821bb92016-01-21 00:20:50 +01003384 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003385}
3386
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003387
3388/*
3389 * read next line from file <f> and return the server state version if one found.
3390 * If no version is found, then 0 is returned
3391 * Note that this should be the first read on <f>
3392 */
3393static int srv_state_get_version(FILE *f) {
3394 char buf[2];
3395 int ret;
3396
3397 /* first character of first line of the file must contain the version of the export */
3398 if (fgets(buf, 2, f) == NULL) {
3399 return 0;
3400 }
3401
3402 ret = atoi(buf);
3403 if ((ret < SRV_STATE_FILE_VERSION_MIN) ||
3404 (ret > SRV_STATE_FILE_VERSION_MAX))
3405 return 0;
3406
3407 return ret;
3408}
3409
3410
3411/*
3412 * parses server state line stored in <buf> and supposedly in version <version>.
3413 * Set <params> and <srv_params> accordingly.
3414 * In case of error, params[0] is set to NULL.
3415 */
3416static void srv_state_parse_line(char *buf, const int version, char **params, char **srv_params)
3417{
3418 int buflen, arg, srv_arg;
3419 char *cur, *end;
3420
3421 buflen = strlen(buf);
3422 cur = buf;
3423 end = cur + buflen;
3424
3425 /* we need at least one character */
3426 if (buflen == 0) {
3427 params[0] = NULL;
3428 return;
3429 }
3430
3431 /* ignore blank characters at the beginning of the line */
3432 while (isspace(*cur))
3433 ++cur;
3434
3435 /* Ignore empty or commented lines */
3436 if (cur == end || *cur == '#') {
3437 params[0] = NULL;
3438 return;
3439 }
3440
3441 /* truncated lines */
3442 if (buf[buflen - 1] != '\n') {
3443 //ha_warning("server-state file '%s': truncated line\n", filepath);
3444 params[0] = NULL;
3445 return;
3446 }
3447
3448 /* Removes trailing '\n' */
3449 buf[buflen - 1] = '\0';
3450
3451 /* we're now ready to move the line into *srv_params[] */
3452 params[0] = cur;
3453 arg = 1;
3454 srv_arg = 0;
3455 while (*cur && arg < SRV_STATE_FILE_MAX_FIELDS) {
3456 if (isspace(*cur)) {
3457 *cur = '\0';
3458 ++cur;
3459 while (isspace(*cur))
3460 ++cur;
3461 switch (version) {
3462 case 1:
3463 /*
3464 * srv_addr: params[4] => srv_params[0]
3465 * srv_op_state: params[5] => srv_params[1]
3466 * srv_admin_state: params[6] => srv_params[2]
3467 * srv_uweight: params[7] => srv_params[3]
3468 * srv_iweight: params[8] => srv_params[4]
3469 * srv_last_time_change: params[9] => srv_params[5]
3470 * srv_check_status: params[10] => srv_params[6]
3471 * srv_check_result: params[11] => srv_params[7]
3472 * srv_check_health: params[12] => srv_params[8]
3473 * srv_check_state: params[13] => srv_params[9]
3474 * srv_agent_state: params[14] => srv_params[10]
3475 * bk_f_forced_id: params[15] => srv_params[11]
3476 * srv_f_forced_id: params[16] => srv_params[12]
3477 * srv_fqdn: params[17] => srv_params[13]
3478 * srv_port: params[18] => srv_params[14]
3479 * srvrecord: params[19] => srv_params[15]
3480 */
3481 if (arg >= 4) {
3482 srv_params[srv_arg] = cur;
3483 ++srv_arg;
3484 }
3485 break;
3486 }
3487
3488 params[arg] = cur;
3489 ++arg;
3490 }
3491 else {
3492 ++cur;
3493 }
3494 }
3495
3496 /* if line is incomplete line, then ignore it.
3497 * otherwise, update useful flags */
3498 switch (version) {
3499 case 1:
3500 if (arg < SRV_STATE_FILE_NB_FIELDS_VERSION_1) {
3501 params[0] = NULL;
3502 return;
3503 }
3504 break;
3505 }
3506
3507 return;
3508}
3509
3510
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003511/* This function parses all the proxies and only take care of the backends (since we're looking for server)
3512 * For each proxy, it does the following:
3513 * - opens its server state file (either one or local one)
3514 * - read whole file, line by line
3515 * - analyse each line to check if it matches our current backend:
3516 * - backend name matches
3517 * - backend id matches if id is forced and name doesn't match
3518 * - if the server pointed by the line is found, then state is applied
3519 *
3520 * If the running backend uuid or id differs from the state file, then HAProxy reports
3521 * a warning.
Willy Tarreau46b7f532018-08-21 11:54:26 +02003522 *
3523 * Grabs the server's lock via srv_update_state().
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003524 */
3525void apply_server_state(void)
3526{
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003527 char mybuf[SRV_STATE_LINE_MAXLEN];
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003528 char *params[SRV_STATE_FILE_MAX_FIELDS] = {0};
3529 char *srv_params[SRV_STATE_FILE_MAX_FIELDS] = {0};
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003530 int version, global_file_version;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003531 FILE *f;
3532 char *filepath;
3533 char globalfilepath[MAXPATHLEN + 1];
3534 char localfilepath[MAXPATHLEN + 1];
3535 int len, fileopenerr, globalfilepathlen, localfilepathlen;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003536 struct proxy *curproxy, *bk;
3537 struct server *srv;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003538 char *line;
3539 char *bkname, *srvname;
3540 struct state_line *st;
3541 struct ebmb_node *node, *next_node;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003542
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003543
3544 global_file_version = 0;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003545 globalfilepathlen = 0;
3546 /* create the globalfilepath variable */
3547 if (global.server_state_file) {
3548 /* absolute path or no base directory provided */
3549 if ((global.server_state_file[0] == '/') || (!global.server_state_base)) {
3550 len = strlen(global.server_state_file);
3551 if (len > MAXPATHLEN) {
3552 globalfilepathlen = 0;
3553 goto globalfileerror;
3554 }
3555 memcpy(globalfilepath, global.server_state_file, len);
3556 globalfilepath[len] = '\0';
3557 globalfilepathlen = len;
3558 }
3559 else if (global.server_state_base) {
3560 len = strlen(global.server_state_base);
Willy Tarreau5dfb6c42018-10-16 19:26:12 +02003561 if (len > MAXPATHLEN) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003562 globalfilepathlen = 0;
3563 goto globalfileerror;
3564 }
Olivier Houchard17f8b902018-10-16 18:35:01 +02003565 memcpy(globalfilepath, global.server_state_base, len);
Willy Tarreau5dfb6c42018-10-16 19:26:12 +02003566 globalfilepath[len] = 0;
3567 globalfilepathlen = len;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003568
3569 /* append a slash if needed */
3570 if (!globalfilepathlen || globalfilepath[globalfilepathlen - 1] != '/') {
3571 if (globalfilepathlen + 1 > MAXPATHLEN) {
3572 globalfilepathlen = 0;
3573 goto globalfileerror;
3574 }
3575 globalfilepath[globalfilepathlen++] = '/';
3576 }
3577
3578 len = strlen(global.server_state_file);
3579 if (globalfilepathlen + len > MAXPATHLEN) {
3580 globalfilepathlen = 0;
3581 goto globalfileerror;
3582 }
3583 memcpy(globalfilepath + globalfilepathlen, global.server_state_file, len);
3584 globalfilepathlen += len;
3585 globalfilepath[globalfilepathlen++] = 0;
3586 }
3587 }
3588 globalfileerror:
3589 if (globalfilepathlen == 0)
3590 globalfilepath[0] = '\0';
3591
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003592 /* Load global server state in a tree */
3593 if (globalfilepathlen > 0) {
3594 errno = 0;
3595 f = fopen(globalfilepath, "r");
3596 if (errno)
3597 ha_warning("Can't open global server state file '%s': %s\n", globalfilepath, strerror(errno));
3598
3599 global_file_version = srv_state_get_version(f);
3600 if (global_file_version == 0)
3601 goto out_load_server_state_in_tree;
3602
3603 while (fgets(mybuf, SRV_STATE_LINE_MAXLEN, f)) {
3604 line = NULL;
3605
3606 line = strdup(mybuf);
3607 if (line == NULL)
3608 continue;
3609
3610 srv_state_parse_line(mybuf, global_file_version, params, srv_params);
3611 if (params[0] == NULL)
3612 continue;
3613
3614 /* bkname */
3615 bkname = params[1];
3616 /* srvname */
3617 srvname = params[3];
3618
3619 /* key */
3620 chunk_printf(&trash, "%s %s", bkname, srvname);
3621
3622 /* store line in tree */
3623 st = calloc(1, sizeof(*st) + trash.size);
3624 if (st == NULL) {
3625 goto nextline;
3626 }
3627 memcpy(st->name_name.key, trash.area, trash.size);
3628 ebst_insert(&state_file, &st->name_name);
3629
3630 /* save line */
3631 st->line = line;
3632
3633 continue;
3634
3635 nextline:
3636 /* free up memory in case of error during the processing of the line */
3637 free(line);
3638 }
3639 }
3640 out_load_server_state_in_tree:
3641
3642 /* parse all proxies and load states form tree (global file) or from local file */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003643 for (curproxy = proxies_list; curproxy != NULL; curproxy = curproxy->next) {
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003644 /* servers are only in backends */
3645 if (!(curproxy->cap & PR_CAP_BE))
3646 continue;
3647 fileopenerr = 0;
3648 filepath = NULL;
3649
3650 /* search server state file path and name */
3651 switch (curproxy->load_server_state_from_file) {
3652 /* read servers state from global file */
3653 case PR_SRV_STATE_FILE_GLOBAL:
3654 /* there was an error while generating global server state file path */
3655 if (globalfilepathlen == 0)
3656 continue;
3657 filepath = globalfilepath;
3658 fileopenerr = 1;
3659 break;
3660 /* this backend has its own file */
3661 case PR_SRV_STATE_FILE_LOCAL:
3662 localfilepathlen = 0;
3663 localfilepath[0] = '\0';
3664 len = 0;
3665 /* create the localfilepath variable */
3666 /* absolute path or no base directory provided */
3667 if ((curproxy->server_state_file_name[0] == '/') || (!global.server_state_base)) {
3668 len = strlen(curproxy->server_state_file_name);
3669 if (len > MAXPATHLEN) {
3670 localfilepathlen = 0;
3671 goto localfileerror;
3672 }
3673 memcpy(localfilepath, curproxy->server_state_file_name, len);
3674 localfilepath[len] = '\0';
3675 localfilepathlen = len;
3676 }
3677 else if (global.server_state_base) {
3678 len = strlen(global.server_state_base);
3679 localfilepathlen += len;
3680
3681 if (localfilepathlen > MAXPATHLEN) {
3682 localfilepathlen = 0;
3683 goto localfileerror;
3684 }
Olivier Houchard17f8b902018-10-16 18:35:01 +02003685 memcpy(localfilepath, global.server_state_base, len);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003686 localfilepath[localfilepathlen] = 0;
3687
3688 /* append a slash if needed */
3689 if (!localfilepathlen || localfilepath[localfilepathlen - 1] != '/') {
3690 if (localfilepathlen + 1 > MAXPATHLEN) {
3691 localfilepathlen = 0;
3692 goto localfileerror;
3693 }
3694 localfilepath[localfilepathlen++] = '/';
3695 }
3696
3697 len = strlen(curproxy->server_state_file_name);
3698 if (localfilepathlen + len > MAXPATHLEN) {
3699 localfilepathlen = 0;
3700 goto localfileerror;
3701 }
3702 memcpy(localfilepath + localfilepathlen, curproxy->server_state_file_name, len);
3703 localfilepathlen += len;
3704 localfilepath[localfilepathlen++] = 0;
3705 }
3706 filepath = localfilepath;
3707 localfileerror:
3708 if (localfilepathlen == 0)
3709 localfilepath[0] = '\0';
3710
3711 break;
3712 case PR_SRV_STATE_FILE_NONE:
3713 default:
3714 continue;
3715 }
3716
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003717 /* when global file is used, we get data from the tree
3718 * Note that in such case we don't check backend name neither uuid.
3719 * Backend name can't be wrong since it's used as a key to retrieve the server state
3720 * line from the tree.
3721 */
3722 if (curproxy->load_server_state_from_file == PR_SRV_STATE_FILE_GLOBAL) {
3723 struct server *srv = curproxy->srv;
3724 while (srv) {
3725 struct ebmb_node *node;
3726 struct state_line *st;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003727
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003728 chunk_printf(&trash, "%s %s", curproxy->id, srv->id);
3729 node = ebst_lookup(&state_file, trash.area);
3730 if (!node)
3731 goto next;
Dragan Dosencf4fb032015-11-04 23:03:26 +01003732
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003733 st = container_of(node, struct state_line, name_name);
3734 memcpy(mybuf, st->line, strlen(st->line));
3735 mybuf[strlen(st->line)] = 0;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003736
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003737 srv_state_parse_line(mybuf, global_file_version, params, srv_params);
3738 if (params[0] == NULL)
3739 goto next;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003740
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003741 srv_update_state(srv, global_file_version, srv_params);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003742
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003743 next:
3744 srv = srv->next;
3745 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003746
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003747 continue; /* next proxy in list */
3748 }
3749 else {
3750 /* load 'local' state file */
3751 errno = 0;
3752 f = fopen(filepath, "r");
3753 if (errno && fileopenerr)
3754 ha_warning("Can't open server state file '%s': %s\n", filepath, strerror(errno));
3755 if (!f)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003756 continue;
3757
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003758 mybuf[0] = '\0';
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003759
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003760 /* first character of first line of the file must contain the version of the export */
3761 version = srv_state_get_version(f);
3762 if (version == 0) {
3763 ha_warning("Can't get version of the server state file '%s'\n", filepath);
3764 goto fileclose;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02003765 }
3766
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003767 while (fgets(mybuf, SRV_STATE_LINE_MAXLEN, f)) {
3768 int bk_f_forced_id = 0;
3769 int check_id = 0;
3770 int check_name = 0;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003771
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003772 srv_state_parse_line(mybuf, version, params, srv_params);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003773
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003774 if (params[0] == NULL) {
3775 continue;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003776 }
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003777
3778 /* if line is incomplete line, then ignore it.
3779 * otherwise, update useful flags */
3780 switch (version) {
3781 case 1:
3782 bk_f_forced_id = (atoi(params[15]) & PR_O_FORCED_ID);
3783 check_id = (atoi(params[0]) == curproxy->uuid);
3784 check_name = (strcmp(curproxy->id, params[1]) == 0);
3785 break;
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003786 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003787
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003788 bk = curproxy;
3789
3790 /* if backend can't be found, let's continue */
3791 if (!check_id && !check_name)
3792 continue;
3793 else if (!check_id && check_name) {
3794 ha_warning("backend ID mismatch: from server state file: '%s', from running config '%d'\n", params[0], bk->uuid);
3795 send_log(bk, LOG_NOTICE, "backend ID mismatch: from server state file: '%s', from running config '%d'\n", params[0], bk->uuid);
3796 }
3797 else if (check_id && !check_name) {
3798 ha_warning("backend name mismatch: from server state file: '%s', from running config '%s'\n", params[1], bk->id);
3799 send_log(bk, LOG_NOTICE, "backend name mismatch: from server state file: '%s', from running config '%s'\n", params[1], bk->id);
3800 /* if name doesn't match, we still want to update curproxy if the backend id
3801 * was forced in previous the previous configuration */
3802 if (!bk_f_forced_id)
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003803 continue;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003804 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003805
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003806 /* look for the server by its name: param[3] */
3807 srv = server_find_best_match(bk, params[3], 0, NULL);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003808
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003809 if (!srv) {
3810 /* if no server found, then warning and continue with next line */
3811 ha_warning("can't find server '%s' in backend '%s'\n",
3812 params[3], params[1]);
3813 send_log(bk, LOG_NOTICE, "can't find server '%s' in backend '%s'\n",
3814 params[3], params[1]);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003815 continue;
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003816 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003817
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003818 /* now we can proceed with server's state update */
3819 srv_update_state(srv, version, srv_params);
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003820 }
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003821 }
Dragan Dosencf4fb032015-11-04 23:03:26 +01003822fileclose:
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003823 fclose(f);
3824 }
Baptiste Assmannda29fe22019-06-13 13:24:29 +02003825
3826 /* now free memory allocated for the tree */
3827 for (node = ebmb_first(&state_file), next_node = node ? ebmb_next(node) : NULL;
3828 node;
3829 node = next_node, next_node = node ? ebmb_next(node) : NULL) {
3830 st = container_of(node, struct state_line, name_name);
3831 ebmb_delete(&st->name_name);
3832 free(st->line);
3833 free(st);
3834 }
3835
Baptiste Assmanne11cfcd2015-08-19 16:44:03 +02003836}
3837
Simon Horman7d09b9a2013-02-12 10:45:51 +09003838/*
Baptiste Assmann14e40142015-04-14 01:13:07 +02003839 * update a server's current IP address.
3840 * ip is a pointer to the new IP address, whose address family is ip_sin_family.
3841 * ip is in network format.
3842 * updater is a string which contains an information about the requester of the update.
3843 * updater is used if not NULL.
3844 *
3845 * A log line and a stderr warning message is generated based on server's backend options.
Willy Tarreau46b7f532018-08-21 11:54:26 +02003846 *
3847 * Must be called with the server lock held.
Baptiste Assmann14e40142015-04-14 01:13:07 +02003848 */
Thierry Fournierd35b7a62016-02-24 08:23:22 +01003849int update_server_addr(struct server *s, void *ip, int ip_sin_family, const char *updater)
Baptiste Assmann14e40142015-04-14 01:13:07 +02003850{
3851 /* generates a log line and a warning on stderr */
3852 if (1) {
3853 /* book enough space for both IPv4 and IPv6 */
3854 char oldip[INET6_ADDRSTRLEN];
3855 char newip[INET6_ADDRSTRLEN];
3856
3857 memset(oldip, '\0', INET6_ADDRSTRLEN);
3858 memset(newip, '\0', INET6_ADDRSTRLEN);
3859
3860 /* copy old IP address in a string */
3861 switch (s->addr.ss_family) {
3862 case AF_INET:
3863 inet_ntop(s->addr.ss_family, &((struct sockaddr_in *)&s->addr)->sin_addr, oldip, INET_ADDRSTRLEN);
3864 break;
3865 case AF_INET6:
3866 inet_ntop(s->addr.ss_family, &((struct sockaddr_in6 *)&s->addr)->sin6_addr, oldip, INET6_ADDRSTRLEN);
3867 break;
3868 };
3869
3870 /* copy new IP address in a string */
3871 switch (ip_sin_family) {
3872 case AF_INET:
3873 inet_ntop(ip_sin_family, ip, newip, INET_ADDRSTRLEN);
3874 break;
3875 case AF_INET6:
3876 inet_ntop(ip_sin_family, ip, newip, INET6_ADDRSTRLEN);
3877 break;
3878 };
3879
3880 /* save log line into a buffer */
3881 chunk_printf(&trash, "%s/%s changed its IP from %s to %s by %s",
3882 s->proxy->id, s->id, oldip, newip, updater);
3883
3884 /* write the buffer on stderr */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003885 ha_warning("%s.\n", trash.area);
Baptiste Assmann14e40142015-04-14 01:13:07 +02003886
3887 /* send a log */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003888 send_log(s->proxy, LOG_NOTICE, "%s.\n", trash.area);
Baptiste Assmann14e40142015-04-14 01:13:07 +02003889 }
3890
3891 /* save the new IP family */
3892 s->addr.ss_family = ip_sin_family;
3893 /* save the new IP address */
3894 switch (ip_sin_family) {
3895 case AF_INET:
Willy Tarreaueec1d382016-07-13 11:59:39 +02003896 memcpy(&((struct sockaddr_in *)&s->addr)->sin_addr.s_addr, ip, 4);
Baptiste Assmann14e40142015-04-14 01:13:07 +02003897 break;
3898 case AF_INET6:
3899 memcpy(((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr, ip, 16);
3900 break;
3901 };
Olivier Houchard4e694042017-03-14 20:01:29 +01003902 srv_set_dyncookie(s);
Baptiste Assmann14e40142015-04-14 01:13:07 +02003903
3904 return 0;
3905}
3906
3907/*
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003908 * This function update a server's addr and port only for AF_INET and AF_INET6 families.
3909 *
3910 * Caller can pass its name through <updater> to get it integrated in the response message
3911 * returned by the function.
3912 *
3913 * The function first does the following, in that order:
3914 * - validates the new addr and/or port
3915 * - checks if an update is required (new IP or port is different than current ones)
3916 * - checks the update is allowed:
3917 * - don't switch from/to a family other than AF_INET4 and AF_INET6
3918 * - allow all changes if no CHECKS are configured
3919 * - if CHECK is configured:
3920 * - if switch to port map (SRV_F_MAPPORTS), ensure health check have their own ports
3921 * - applies required changes to both ADDR and PORT if both 'required' and 'allowed'
3922 * conditions are met
Willy Tarreau46b7f532018-08-21 11:54:26 +02003923 *
3924 * Must be called with the server lock held.
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003925 */
3926const char *update_server_addr_port(struct server *s, const char *addr, const char *port, char *updater)
3927{
3928 struct sockaddr_storage sa;
3929 int ret, port_change_required;
3930 char current_addr[INET6_ADDRSTRLEN];
David Carlier327298c2016-11-20 10:42:38 +00003931 uint16_t current_port, new_port;
Willy Tarreau83061a82018-07-13 11:56:34 +02003932 struct buffer *msg;
Olivier Houchard4e694042017-03-14 20:01:29 +01003933 int changed = 0;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003934
3935 msg = get_trash_chunk();
3936 chunk_reset(msg);
3937
3938 if (addr) {
3939 memset(&sa, 0, sizeof(struct sockaddr_storage));
3940 if (str2ip2(addr, &sa, 0) == NULL) {
3941 chunk_printf(msg, "Invalid addr '%s'", addr);
3942 goto out;
3943 }
3944
3945 /* changes are allowed on AF_INET* families only */
3946 if ((sa.ss_family != AF_INET) && (sa.ss_family != AF_INET6)) {
3947 chunk_printf(msg, "Update to families other than AF_INET and AF_INET6 supported only through configuration file");
3948 goto out;
3949 }
3950
3951 /* collecting data currently setup */
3952 memset(current_addr, '\0', sizeof(current_addr));
3953 ret = addr_to_str(&s->addr, current_addr, sizeof(current_addr));
3954 /* changes are allowed on AF_INET* families only */
3955 if ((ret != AF_INET) && (ret != AF_INET6)) {
3956 chunk_printf(msg, "Update for the current server address family is only supported through configuration file");
3957 goto out;
3958 }
3959
3960 /* applying ADDR changes if required and allowed
3961 * ipcmp returns 0 when both ADDR are the same
3962 */
3963 if (ipcmp(&s->addr, &sa) == 0) {
3964 chunk_appendf(msg, "no need to change the addr");
3965 goto port;
3966 }
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003967 ipcpy(&sa, &s->addr);
Olivier Houchard4e694042017-03-14 20:01:29 +01003968 changed = 1;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003969
3970 /* we also need to update check's ADDR only if it uses the server's one */
3971 if ((s->check.state & CHK_ST_CONFIGURED) && (s->flags & SRV_F_CHECKADDR)) {
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003972 ipcpy(&sa, &s->check.addr);
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003973 }
3974
3975 /* we also need to update agent ADDR only if it use the server's one */
3976 if ((s->agent.state & CHK_ST_CONFIGURED) && (s->flags & SRV_F_AGENTADDR)) {
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003977 ipcpy(&sa, &s->agent.addr);
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003978 }
3979
3980 /* update report for caller */
3981 chunk_printf(msg, "IP changed from '%s' to '%s'", current_addr, addr);
3982 }
3983
3984 port:
3985 if (port) {
3986 char sign = '\0';
3987 char *endptr;
3988
3989 if (addr)
3990 chunk_appendf(msg, ", ");
3991
3992 /* collecting data currently setup */
Willy Tarreau04276f32017-01-06 17:41:29 +01003993 current_port = s->svc_port;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02003994
3995 /* check if PORT change is required */
3996 port_change_required = 0;
3997
3998 sign = *port;
Ryabin Sergey77ee7522017-01-11 19:39:55 +04003999 errno = 0;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02004000 new_port = strtol(port, &endptr, 10);
4001 if ((errno != 0) || (port == endptr)) {
4002 chunk_appendf(msg, "problem converting port '%s' to an int", port);
4003 goto out;
4004 }
4005
4006 /* check if caller triggers a port mapped or offset */
4007 if (sign == '-' || (sign == '+')) {
4008 /* check if server currently uses port map */
4009 if (!(s->flags & SRV_F_MAPPORTS)) {
4010 /* switch from fixed port to port map mandatorily triggers
4011 * a port change */
4012 port_change_required = 1;
4013 /* check is configured
4014 * we're switching from a fixed port to a SRV_F_MAPPORTS (mapped) port
4015 * prevent PORT change if check doesn't have it's dedicated port while switching
4016 * to port mapping */
4017 if ((s->check.state & CHK_ST_CONFIGURED) && !(s->flags & SRV_F_CHECKPORT)) {
4018 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.");
4019 goto out;
4020 }
4021 }
4022 /* we're already using port maps */
4023 else {
4024 port_change_required = current_port != new_port;
4025 }
4026 }
4027 /* fixed port */
4028 else {
4029 port_change_required = current_port != new_port;
4030 }
4031
4032 /* applying PORT changes if required and update response message */
4033 if (port_change_required) {
4034 /* apply new port */
Willy Tarreau04276f32017-01-06 17:41:29 +01004035 s->svc_port = new_port;
Olivier Houchard4e694042017-03-14 20:01:29 +01004036 changed = 1;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02004037
4038 /* prepare message */
4039 chunk_appendf(msg, "port changed from '");
4040 if (s->flags & SRV_F_MAPPORTS)
4041 chunk_appendf(msg, "+");
4042 chunk_appendf(msg, "%d' to '", current_port);
4043
4044 if (sign == '-') {
4045 s->flags |= SRV_F_MAPPORTS;
4046 chunk_appendf(msg, "%c", sign);
4047 /* just use for result output */
4048 new_port = -new_port;
4049 }
4050 else if (sign == '+') {
4051 s->flags |= SRV_F_MAPPORTS;
4052 chunk_appendf(msg, "%c", sign);
4053 }
4054 else {
4055 s->flags &= ~SRV_F_MAPPORTS;
4056 }
4057
4058 chunk_appendf(msg, "%d'", new_port);
4059
4060 /* we also need to update health checks port only if it uses server's realport */
4061 if ((s->check.state & CHK_ST_CONFIGURED) && !(s->flags & SRV_F_CHECKPORT)) {
4062 s->check.port = new_port;
4063 }
4064 }
4065 else {
4066 chunk_appendf(msg, "no need to change the port");
4067 }
4068 }
4069
4070out:
Olivier Houchard4e694042017-03-14 20:01:29 +01004071 if (changed)
4072 srv_set_dyncookie(s);
Baptiste Assmannd458adc2016-08-02 08:18:55 +02004073 if (updater)
4074 chunk_appendf(msg, " by '%s'", updater);
4075 chunk_appendf(msg, "\n");
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004076 return msg->area;
Baptiste Assmannd458adc2016-08-02 08:18:55 +02004077}
4078
4079
4080/*
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004081 * update server status based on result of name resolution
4082 * returns:
4083 * 0 if server status is updated
4084 * 1 if server status has not changed
Willy Tarreau46b7f532018-08-21 11:54:26 +02004085 *
4086 * Must be called with the server lock held.
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004087 */
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004088int snr_update_srv_status(struct server *s, int has_no_ip)
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004089{
Christopher Faulet67957bd2017-09-27 11:00:59 +02004090 struct dns_resolvers *resolvers = s->resolvers;
4091 struct dns_resolution *resolution = s->dns_requester->resolution;
4092 int exp;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004093
4094 switch (resolution->status) {
4095 case RSLV_STATUS_NONE:
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004096 /* status when HAProxy has just (re)started.
4097 * Nothing to do, since the task is already automatically started */
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004098 break;
4099
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01004100 case RSLV_STATUS_VALID:
4101 /*
4102 * resume health checks
4103 * server will be turned back on if health check is safe
4104 */
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004105 if (has_no_ip) {
Emeric Brun52a91d32017-08-31 14:41:55 +02004106 if (s->next_admin & SRV_ADMF_RMAINT)
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004107 return 1;
4108 srv_set_admin_flag(s, SRV_ADMF_RMAINT,
4109 "No IP for server ");
Christopher Faulet67957bd2017-09-27 11:00:59 +02004110 return 0;
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004111 }
Christopher Faulet67957bd2017-09-27 11:00:59 +02004112
Emeric Brun52a91d32017-08-31 14:41:55 +02004113 if (!(s->next_admin & SRV_ADMF_RMAINT))
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01004114 return 1;
4115 srv_clr_admin_flag(s, SRV_ADMF_RMAINT);
4116 chunk_printf(&trash, "Server %s/%s administratively READY thanks to valid DNS answer",
4117 s->proxy->id, s->id);
4118
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004119 ha_warning("%s.\n", trash.area);
4120 send_log(s->proxy, LOG_NOTICE, "%s.\n", trash.area);
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01004121 return 0;
4122
4123 case RSLV_STATUS_NX:
4124 /* stop server if resolution is NX for a long enough period */
Christopher Faulet67957bd2017-09-27 11:00:59 +02004125 exp = tick_add(resolution->last_valid, resolvers->hold.nx);
4126 if (!tick_is_expired(exp, now_ms))
4127 break;
4128
4129 if (s->next_admin & SRV_ADMF_RMAINT)
4130 return 1;
4131 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "DNS NX status");
4132 return 0;
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01004133
4134 case RSLV_STATUS_TIMEOUT:
4135 /* stop server if resolution is TIMEOUT for a long enough period */
Christopher Faulet67957bd2017-09-27 11:00:59 +02004136 exp = tick_add(resolution->last_valid, resolvers->hold.timeout);
4137 if (!tick_is_expired(exp, now_ms))
4138 break;
4139
4140 if (s->next_admin & SRV_ADMF_RMAINT)
4141 return 1;
4142 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "DNS timeout status");
4143 return 0;
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01004144
4145 case RSLV_STATUS_REFUSED:
4146 /* stop server if resolution is REFUSED for a long enough period */
Christopher Faulet67957bd2017-09-27 11:00:59 +02004147 exp = tick_add(resolution->last_valid, resolvers->hold.refused);
4148 if (!tick_is_expired(exp, now_ms))
4149 break;
4150
4151 if (s->next_admin & SRV_ADMF_RMAINT)
4152 return 1;
4153 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "DNS refused status");
4154 return 0;
Baptiste Assmann3b9fe9f2016-11-02 22:58:18 +01004155
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004156 default:
Christopher Faulet67957bd2017-09-27 11:00:59 +02004157 /* stop server if resolution failed for a long enough period */
4158 exp = tick_add(resolution->last_valid, resolvers->hold.other);
4159 if (!tick_is_expired(exp, now_ms))
4160 break;
4161
4162 if (s->next_admin & SRV_ADMF_RMAINT)
4163 return 1;
4164 srv_set_admin_flag(s, SRV_ADMF_RMAINT, "unspecified DNS error");
4165 return 0;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004166 }
4167
4168 return 1;
4169}
4170
4171/*
4172 * Server Name Resolution valid response callback
4173 * It expects:
4174 * - <nameserver>: the name server which answered the valid response
4175 * - <response>: buffer containing a valid DNS response
4176 * - <response_len>: size of <response>
4177 * It performs the following actions:
4178 * - ignore response if current ip found and server family not met
4179 * - update with first new ip found if family is met and current IP is not found
4180 * returns:
4181 * 0 on error
4182 * 1 when no error or safe ignore
Olivier Houchard28381072017-11-06 17:30:28 +01004183 *
4184 * Must be called with server lock held
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004185 */
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004186int snr_resolution_cb(struct dns_requester *requester, struct dns_nameserver *nameserver)
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004187{
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004188 struct server *s = NULL;
4189 struct dns_resolution *resolution = NULL;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004190 void *serverip, *firstip;
4191 short server_sin_family, firstip_sin_family;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004192 int ret;
Willy Tarreau83061a82018-07-13 11:56:34 +02004193 struct buffer *chk = get_trash_chunk();
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004194 int has_no_ip = 0;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004195
Christopher Faulet67957bd2017-09-27 11:00:59 +02004196 s = objt_server(requester->owner);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004197 if (!s)
4198 return 1;
4199
Christopher Faulet67957bd2017-09-27 11:00:59 +02004200 resolution = s->dns_requester->resolution;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004201
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004202 /* initializing variables */
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004203 firstip = NULL; /* pointer to the first valid response found */
4204 /* it will be used as the new IP if a change is required */
4205 firstip_sin_family = AF_UNSPEC;
4206 serverip = NULL; /* current server IP address */
4207
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004208 /* initializing server IP pointer */
4209 server_sin_family = s->addr.ss_family;
4210 switch (server_sin_family) {
4211 case AF_INET:
4212 serverip = &((struct sockaddr_in *)&s->addr)->sin_addr.s_addr;
4213 break;
4214
4215 case AF_INET6:
4216 serverip = &((struct sockaddr_in6 *)&s->addr)->sin6_addr.s6_addr;
4217 break;
4218
Willy Tarreau3acfcd12017-01-06 19:18:32 +01004219 case AF_UNSPEC:
4220 break;
4221
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004222 default:
4223 goto invalid;
4224 }
4225
Baptiste Assmann729c9012017-05-22 15:13:10 +02004226 ret = dns_get_ip_from_response(&resolution->response, &s->dns_opts,
Thierry Fournierada34842016-02-17 21:25:09 +01004227 serverip, server_sin_family, &firstip,
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004228 &firstip_sin_family, s);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004229
4230 switch (ret) {
4231 case DNS_UPD_NO:
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004232 goto update_status;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004233
4234 case DNS_UPD_SRVIP_NOT_FOUND:
4235 goto save_ip;
4236
4237 case DNS_UPD_CNAME:
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004238 goto invalid;
4239
Baptiste Assmann0453a1d2015-09-09 00:51:08 +02004240 case DNS_UPD_NO_IP_FOUND:
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004241 has_no_ip = 1;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004242 goto update_status;
Baptiste Assmann0453a1d2015-09-09 00:51:08 +02004243
Baptiste Assmannfad03182015-10-28 02:03:32 +01004244 case DNS_UPD_NAME_ERROR:
Baptiste Assmannfad03182015-10-28 02:03:32 +01004245 /* update resolution status to OTHER error type */
Christopher Faulet67957bd2017-09-27 11:00:59 +02004246 resolution->status = RSLV_STATUS_OTHER;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004247 goto update_status;
Baptiste Assmannfad03182015-10-28 02:03:32 +01004248
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004249 default:
4250 goto invalid;
4251
4252 }
4253
4254 save_ip:
Christopher Faulet67957bd2017-09-27 11:00:59 +02004255 if (nameserver) {
4256 nameserver->counters.update++;
4257 /* save the first ip we found */
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004258 chunk_printf(chk, "%s/%s", nameserver->resolvers->id, nameserver->id);
Christopher Faulet67957bd2017-09-27 11:00:59 +02004259 }
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004260 else
4261 chunk_printf(chk, "DNS cache");
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004262 update_server_addr(s, firstip, firstip_sin_family, (char *) chk->area);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004263
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004264 update_status:
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004265 snr_update_srv_status(s, has_no_ip);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004266 return 1;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004267
4268 invalid:
Christopher Faulet3bbd65b2017-09-15 11:55:45 +02004269 if (nameserver) {
Christopher Faulet67957bd2017-09-27 11:00:59 +02004270 nameserver->counters.invalid++;
4271 goto update_status;
Christopher Faulet3bbd65b2017-09-15 11:55:45 +02004272 }
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004273 snr_update_srv_status(s, has_no_ip);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004274 return 0;
4275}
4276
4277/*
4278 * Server Name Resolution error management callback
4279 * returns:
4280 * 0 on error
4281 * 1 when no error or safe ignore
Willy Tarreau46b7f532018-08-21 11:54:26 +02004282 *
4283 * Grabs the server's lock.
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004284 */
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004285int snr_resolution_error_cb(struct dns_requester *requester, int error_code)
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004286{
Christopher Faulet67957bd2017-09-27 11:00:59 +02004287 struct server *s;
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004288
Christopher Faulet67957bd2017-09-27 11:00:59 +02004289 s = objt_server(requester->owner);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004290 if (!s)
4291 return 1;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004292 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004293 snr_update_srv_status(s, 0);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004294 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
Baptiste Assmanna68ca962015-04-14 01:15:08 +02004295 return 1;
4296}
4297
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004298/*
4299 * Function to check if <ip> is already affected to a server in the backend
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004300 * which owns <srv> and is up.
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004301 * It returns a pointer to the first server found or NULL if <ip> is not yet
4302 * assigned.
Olivier Houchard28381072017-11-06 17:30:28 +01004303 *
4304 * Must be called with server lock held
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004305 */
4306struct server *snr_check_ip_callback(struct server *srv, void *ip, unsigned char *ip_family)
4307{
4308 struct server *tmpsrv;
4309 struct proxy *be;
4310
4311 if (!srv)
4312 return NULL;
4313
4314 be = srv->proxy;
4315 for (tmpsrv = be->srv; tmpsrv; tmpsrv = tmpsrv->next) {
Emeric Brune9fd6b52017-11-02 17:20:39 +01004316 /* we found the current server is the same, ignore it */
4317 if (srv == tmpsrv)
4318 continue;
4319
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004320 /* We want to compare the IP in the record with the IP of the servers in the
4321 * same backend, only if:
4322 * * DNS resolution is enabled on the server
4323 * * the hostname used for the resolution by our server is the same than the
4324 * one used for the server found in the backend
4325 * * the server found in the backend is not our current server
4326 */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004327 HA_SPIN_LOCK(SERVER_LOCK, &tmpsrv->lock);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004328 if ((tmpsrv->hostname_dn == NULL) ||
4329 (srv->hostname_dn_len != tmpsrv->hostname_dn_len) ||
4330 (strcmp(srv->hostname_dn, tmpsrv->hostname_dn) != 0) ||
Emeric Brune9fd6b52017-11-02 17:20:39 +01004331 (srv->puid == tmpsrv->puid)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004332 HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock);
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004333 continue;
Emeric Brune9fd6b52017-11-02 17:20:39 +01004334 }
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004335
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004336 /* If the server has been taken down, don't consider it */
Emeric Brune9fd6b52017-11-02 17:20:39 +01004337 if (tmpsrv->next_admin & SRV_ADMF_RMAINT) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004338 HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock);
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004339 continue;
Emeric Brune9fd6b52017-11-02 17:20:39 +01004340 }
Olivier Houcharda8c6db82017-07-06 18:46:47 +02004341
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004342 /* At this point, we have 2 different servers using the same DNS hostname
4343 * for their respective resolution.
4344 */
4345 if (*ip_family == tmpsrv->addr.ss_family &&
4346 ((tmpsrv->addr.ss_family == AF_INET &&
4347 memcmp(ip, &((struct sockaddr_in *)&tmpsrv->addr)->sin_addr, 4) == 0) ||
4348 (tmpsrv->addr.ss_family == AF_INET6 &&
4349 memcmp(ip, &((struct sockaddr_in6 *)&tmpsrv->addr)->sin6_addr, 16) == 0))) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004350 HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock);
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004351 return tmpsrv;
4352 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004353 HA_SPIN_UNLOCK(SERVER_LOCK, &tmpsrv->lock);
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004354 }
4355
Emeric Brune9fd6b52017-11-02 17:20:39 +01004356
Baptiste Assmannfb7091e2017-05-03 15:43:12 +02004357 return NULL;
4358}
4359
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004360/* Sets the server's address (srv->addr) from srv->hostname using the libc's
4361 * resolver. This is suited for initial address configuration. Returns 0 on
4362 * success otherwise a non-zero error code. In case of error, *err_code, if
4363 * not NULL, is filled up.
4364 */
4365int srv_set_addr_via_libc(struct server *srv, int *err_code)
4366{
4367 if (str2ip2(srv->hostname, &srv->addr, 1) == NULL) {
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004368 if (err_code)
Willy Tarreau465b6e52016-11-07 19:19:22 +01004369 *err_code |= ERR_WARN;
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004370 return 1;
4371 }
4372 return 0;
4373}
4374
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004375/* Set the server's FDQN (->hostname) from <hostname>.
4376 * Returns -1 if failed, 0 if not.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004377 *
4378 * Must be called with the server lock held.
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004379 */
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004380int srv_set_fqdn(struct server *srv, const char *hostname, int dns_locked)
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004381{
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004382 struct dns_resolution *resolution;
Christopher Faulet67957bd2017-09-27 11:00:59 +02004383 char *hostname_dn;
4384 int hostname_len, hostname_dn_len;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004385
Frédéric Lécaille5afb3cf2018-08-21 15:04:23 +02004386 /* Note that the server lock is already held. */
4387 if (!srv->resolvers)
4388 return -1;
4389
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004390 if (!dns_locked)
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004391 HA_SPIN_LOCK(DNS_LOCK, &srv->resolvers->lock);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004392 /* run time DNS resolution was not active for this server
4393 * and we can't enable it at run time for now.
4394 */
4395 if (!srv->dns_requester)
Christopher Fauletb2812a62017-10-04 16:17:58 +02004396 goto err;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004397
4398 chunk_reset(&trash);
Christopher Faulet67957bd2017-09-27 11:00:59 +02004399 hostname_len = strlen(hostname);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004400 hostname_dn = trash.area;
Christopher Faulet67957bd2017-09-27 11:00:59 +02004401 hostname_dn_len = dns_str_to_dn_label(hostname, hostname_len + 1,
4402 hostname_dn, trash.size);
4403 if (hostname_dn_len == -1)
Christopher Fauletb2812a62017-10-04 16:17:58 +02004404 goto err;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004405
Christopher Faulet67957bd2017-09-27 11:00:59 +02004406 resolution = srv->dns_requester->resolution;
4407 if (resolution &&
4408 resolution->hostname_dn &&
4409 !strcmp(resolution->hostname_dn, hostname_dn))
Christopher Fauletb2812a62017-10-04 16:17:58 +02004410 goto end;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004411
Christopher Faulet67957bd2017-09-27 11:00:59 +02004412 dns_unlink_resolution(srv->dns_requester);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004413
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004414 free(srv->hostname);
4415 free(srv->hostname_dn);
Christopher Faulet67957bd2017-09-27 11:00:59 +02004416 srv->hostname = strdup(hostname);
4417 srv->hostname_dn = strdup(hostname_dn);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004418 srv->hostname_dn_len = hostname_dn_len;
4419 if (!srv->hostname || !srv->hostname_dn)
Christopher Fauletb2812a62017-10-04 16:17:58 +02004420 goto err;
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004421
Olivier Houchard55dcdf42017-11-06 15:15:04 +01004422 if (dns_link_resolution(srv, OBJ_TYPE_SERVER, 1) == -1)
Christopher Fauletb2812a62017-10-04 16:17:58 +02004423 goto err;
4424
4425 end:
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004426 if (!dns_locked)
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004427 HA_SPIN_UNLOCK(DNS_LOCK, &srv->resolvers->lock);
Baptiste Assmann201c07f2017-05-22 15:17:15 +02004428 return 0;
Christopher Fauletb2812a62017-10-04 16:17:58 +02004429
4430 err:
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004431 if (!dns_locked)
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004432 HA_SPIN_UNLOCK(DNS_LOCK, &srv->resolvers->lock);
Christopher Fauletb2812a62017-10-04 16:17:58 +02004433 return -1;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004434}
4435
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004436/* Sets the server's address (srv->addr) from srv->lastaddr which was filled
4437 * from the state file. This is suited for initial address configuration.
4438 * Returns 0 on success otherwise a non-zero error code. In case of error,
4439 * *err_code, if not NULL, is filled up.
4440 */
4441static int srv_apply_lastaddr(struct server *srv, int *err_code)
4442{
4443 if (!str2ip2(srv->lastaddr, &srv->addr, 0)) {
4444 if (err_code)
4445 *err_code |= ERR_WARN;
4446 return 1;
4447 }
4448 return 0;
4449}
4450
Willy Tarreau25e51522016-11-04 15:10:17 +01004451/* returns 0 if no error, otherwise a combination of ERR_* flags */
4452static int srv_iterate_initaddr(struct server *srv)
4453{
4454 int return_code = 0;
4455 int err_code;
4456 unsigned int methods;
4457
4458 methods = srv->init_addr_methods;
4459 if (!methods) { // default to "last,libc"
4460 srv_append_initaddr(&methods, SRV_IADDR_LAST);
4461 srv_append_initaddr(&methods, SRV_IADDR_LIBC);
4462 }
4463
Willy Tarreau3eed10e2016-11-07 21:03:16 +01004464 /* "-dr" : always append "none" so that server addresses resolution
4465 * failures are silently ignored, this is convenient to validate some
4466 * configs out of their environment.
4467 */
4468 if (global.tune.options & GTUNE_RESOLVE_DONTFAIL)
4469 srv_append_initaddr(&methods, SRV_IADDR_NONE);
4470
Willy Tarreau25e51522016-11-04 15:10:17 +01004471 while (methods) {
4472 err_code = 0;
4473 switch (srv_get_next_initaddr(&methods)) {
4474 case SRV_IADDR_LAST:
4475 if (!srv->lastaddr)
4476 continue;
4477 if (srv_apply_lastaddr(srv, &err_code) == 0)
Olivier Houchard4e694042017-03-14 20:01:29 +01004478 goto out;
Willy Tarreau25e51522016-11-04 15:10:17 +01004479 return_code |= err_code;
4480 break;
4481
4482 case SRV_IADDR_LIBC:
4483 if (!srv->hostname)
4484 continue;
4485 if (srv_set_addr_via_libc(srv, &err_code) == 0)
Olivier Houchard4e694042017-03-14 20:01:29 +01004486 goto out;
Willy Tarreau25e51522016-11-04 15:10:17 +01004487 return_code |= err_code;
4488 break;
4489
Willy Tarreau37ebe122016-11-04 15:17:58 +01004490 case SRV_IADDR_NONE:
4491 srv_set_admin_flag(srv, SRV_ADMF_RMAINT, NULL);
Willy Tarreau465b6e52016-11-07 19:19:22 +01004492 if (return_code) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01004493 ha_warning("parsing [%s:%d] : 'server %s' : could not resolve address '%s', disabling server.\n",
4494 srv->conf.file, srv->conf.line, srv->id, srv->hostname);
Willy Tarreau465b6e52016-11-07 19:19:22 +01004495 }
Willy Tarreau37ebe122016-11-04 15:17:58 +01004496 return return_code;
4497
Willy Tarreau4310d362016-11-02 15:05:56 +01004498 case SRV_IADDR_IP:
4499 ipcpy(&srv->init_addr, &srv->addr);
4500 if (return_code) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01004501 ha_warning("parsing [%s:%d] : 'server %s' : could not resolve address '%s', falling back to configured address.\n",
4502 srv->conf.file, srv->conf.line, srv->id, srv->hostname);
Willy Tarreau4310d362016-11-02 15:05:56 +01004503 }
Olivier Houchard4e694042017-03-14 20:01:29 +01004504 goto out;
Willy Tarreau4310d362016-11-02 15:05:56 +01004505
Willy Tarreau25e51522016-11-04 15:10:17 +01004506 default: /* unhandled method */
4507 break;
4508 }
4509 }
4510
4511 if (!return_code) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01004512 ha_alert("parsing [%s:%d] : 'server %s' : no method found to resolve address '%s'\n",
Willy Tarreau25e51522016-11-04 15:10:17 +01004513 srv->conf.file, srv->conf.line, srv->id, srv->hostname);
4514 }
Willy Tarreau465b6e52016-11-07 19:19:22 +01004515 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01004516 ha_alert("parsing [%s:%d] : 'server %s' : could not resolve address '%s'.\n",
Willy Tarreau465b6e52016-11-07 19:19:22 +01004517 srv->conf.file, srv->conf.line, srv->id, srv->hostname);
4518 }
Willy Tarreau25e51522016-11-04 15:10:17 +01004519
4520 return_code |= ERR_ALERT | ERR_FATAL;
4521 return return_code;
Olivier Houchard4e694042017-03-14 20:01:29 +01004522out:
4523 srv_set_dyncookie(srv);
4524 return return_code;
Willy Tarreau25e51522016-11-04 15:10:17 +01004525}
4526
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004527/*
4528 * This function parses all backends and all servers within each backend
4529 * and performs servers' addr resolution based on information provided by:
4530 * - configuration file
4531 * - server-state file (states provided by an 'old' haproxy process)
4532 *
4533 * Returns 0 if no error, otherwise, a combination of ERR_ flags.
4534 */
4535int srv_init_addr(void)
4536{
4537 struct proxy *curproxy;
4538 int return_code = 0;
4539
Olivier Houchardfbc74e82017-11-24 16:54:05 +01004540 curproxy = proxies_list;
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004541 while (curproxy) {
4542 struct server *srv;
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004543
4544 /* servers are in backend only */
4545 if (!(curproxy->cap & PR_CAP_BE))
4546 goto srv_init_addr_next;
4547
Willy Tarreau25e51522016-11-04 15:10:17 +01004548 for (srv = curproxy->srv; srv; srv = srv->next)
Willy Tarreau3d609a72017-09-06 14:22:45 +02004549 if (srv->hostname)
4550 return_code |= srv_iterate_initaddr(srv);
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01004551
4552 srv_init_addr_next:
4553 curproxy = curproxy->next;
4554 }
4555
4556 return return_code;
4557}
4558
Willy Tarreau46b7f532018-08-21 11:54:26 +02004559/*
4560 * Must be called with the server lock held.
4561 */
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004562const char *update_server_fqdn(struct server *server, const char *fqdn, const char *updater, int dns_locked)
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004563{
4564
Willy Tarreau83061a82018-07-13 11:56:34 +02004565 struct buffer *msg;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004566
4567 msg = get_trash_chunk();
4568 chunk_reset(msg);
4569
Olivier Houchard8da5f982017-08-04 18:35:36 +02004570 if (server->hostname && !strcmp(fqdn, server->hostname)) {
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004571 chunk_appendf(msg, "no need to change the FDQN");
4572 goto out;
4573 }
4574
4575 if (strlen(fqdn) > DNS_MAX_NAME_SIZE || invalid_domainchar(fqdn)) {
4576 chunk_appendf(msg, "invalid fqdn '%s'", fqdn);
4577 goto out;
4578 }
4579
4580 chunk_appendf(msg, "%s/%s changed its FQDN from %s to %s",
4581 server->proxy->id, server->id, server->hostname, fqdn);
4582
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004583 if (srv_set_fqdn(server, fqdn, dns_locked) < 0) {
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004584 chunk_reset(msg);
4585 chunk_appendf(msg, "could not update %s/%s FQDN",
4586 server->proxy->id, server->id);
4587 goto out;
4588 }
4589
4590 /* Flag as FQDN set from stats socket. */
Emeric Brun52a91d32017-08-31 14:41:55 +02004591 server->next_admin |= SRV_ADMF_HMAINT;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004592
4593 out:
4594 if (updater)
4595 chunk_appendf(msg, " by '%s'", updater);
4596 chunk_appendf(msg, "\n");
4597
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004598 return msg->area;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004599}
4600
4601
Willy Tarreau21b069d2016-11-23 17:15:08 +01004602/* Expects to find a backend and a server in <arg> under the form <backend>/<server>,
4603 * and returns the pointer to the server. Otherwise, display adequate error messages
Willy Tarreau3b6e5472016-11-24 15:53:53 +01004604 * 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 +01004605 * used for CLI commands requiring a server name.
4606 * Important: the <arg> is modified to remove the '/'.
4607 */
4608struct server *cli_find_server(struct appctx *appctx, char *arg)
4609{
4610 struct proxy *px;
4611 struct server *sv;
4612 char *line;
4613
4614 /* split "backend/server" and make <line> point to server */
4615 for (line = arg; *line; line++)
4616 if (*line == '/') {
4617 *line++ = '\0';
4618 break;
4619 }
4620
4621 if (!*line || !*arg) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004622 cli_err(appctx, "Require 'backend/server'.\n");
Willy Tarreau21b069d2016-11-23 17:15:08 +01004623 return NULL;
4624 }
4625
4626 if (!get_backend_server(arg, line, &px, &sv)) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004627 cli_err(appctx, px ? "No such server.\n" : "No such backend.\n");
Willy Tarreau21b069d2016-11-23 17:15:08 +01004628 return NULL;
4629 }
4630
4631 if (px->state == PR_STSTOPPED) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004632 cli_err(appctx, "Proxy is disabled.\n");
Willy Tarreau21b069d2016-11-23 17:15:08 +01004633 return NULL;
4634 }
4635
4636 return sv;
4637}
4638
William Lallemand222baf22016-11-19 02:00:33 +01004639
Willy Tarreau46b7f532018-08-21 11:54:26 +02004640/* grabs the server lock */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004641static int cli_parse_set_server(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand222baf22016-11-19 02:00:33 +01004642{
4643 struct server *sv;
4644 const char *warning;
4645
4646 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4647 return 1;
4648
4649 sv = cli_find_server(appctx, args[2]);
4650 if (!sv)
4651 return 1;
4652
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004653 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Emeric Brun9f0b4582017-10-23 14:39:51 +02004654
William Lallemand222baf22016-11-19 02:00:33 +01004655 if (strcmp(args[3], "weight") == 0) {
4656 warning = server_parse_weight_change_request(sv, args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02004657 if (warning)
4658 cli_err(appctx, warning);
William Lallemand222baf22016-11-19 02:00:33 +01004659 }
4660 else if (strcmp(args[3], "state") == 0) {
4661 if (strcmp(args[4], "ready") == 0)
4662 srv_adm_set_ready(sv);
4663 else if (strcmp(args[4], "drain") == 0)
4664 srv_adm_set_drain(sv);
4665 else if (strcmp(args[4], "maint") == 0)
4666 srv_adm_set_maint(sv);
Willy Tarreau9d008692019-08-09 11:21:01 +02004667 else
4668 cli_err(appctx, "'set server <srv> state' expects 'ready', 'drain' and 'maint'.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004669 }
4670 else if (strcmp(args[3], "health") == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004671 if (sv->track)
4672 cli_err(appctx, "cannot change health on a tracking server.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004673 else if (strcmp(args[4], "up") == 0) {
4674 sv->check.health = sv->check.rise + sv->check.fall - 1;
Emeric Brun5a133512017-10-19 14:42:30 +02004675 srv_set_running(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004676 }
4677 else if (strcmp(args[4], "stopping") == 0) {
4678 sv->check.health = sv->check.rise + sv->check.fall - 1;
Emeric Brun5a133512017-10-19 14:42:30 +02004679 srv_set_stopping(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004680 }
4681 else if (strcmp(args[4], "down") == 0) {
4682 sv->check.health = 0;
Emeric Brun5a133512017-10-19 14:42:30 +02004683 srv_set_stopped(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004684 }
Willy Tarreau9d008692019-08-09 11:21:01 +02004685 else
4686 cli_err(appctx, "'set server <srv> health' expects 'up', 'stopping', or 'down'.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004687 }
4688 else if (strcmp(args[3], "agent") == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004689 if (!(sv->agent.state & CHK_ST_ENABLED))
4690 cli_err(appctx, "agent checks are not enabled on this server.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004691 else if (strcmp(args[4], "up") == 0) {
4692 sv->agent.health = sv->agent.rise + sv->agent.fall - 1;
Emeric Brun5a133512017-10-19 14:42:30 +02004693 srv_set_running(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004694 }
4695 else if (strcmp(args[4], "down") == 0) {
4696 sv->agent.health = 0;
Emeric Brun5a133512017-10-19 14:42:30 +02004697 srv_set_stopped(sv, "changed from CLI", NULL);
William Lallemand222baf22016-11-19 02:00:33 +01004698 }
Willy Tarreau9d008692019-08-09 11:21:01 +02004699 else
4700 cli_err(appctx, "'set server <srv> agent' expects 'up' or 'down'.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004701 }
Misiek2da082d2017-01-09 09:40:42 +01004702 else if (strcmp(args[3], "agent-addr") == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004703 if (!(sv->agent.state & CHK_ST_ENABLED))
4704 cli_err(appctx, "agent checks are not enabled on this server.\n");
4705 else if (str2ip(args[4], &sv->agent.addr) == NULL)
4706 cli_err(appctx, "incorrect addr address given for agent.\n");
Misiek2da082d2017-01-09 09:40:42 +01004707 }
4708 else if (strcmp(args[3], "agent-send") == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004709 if (!(sv->agent.state & CHK_ST_ENABLED))
4710 cli_err(appctx, "agent checks are not enabled on this server.\n");
4711 else {
Misiek2da082d2017-01-09 09:40:42 +01004712 char *nss = strdup(args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02004713 if (!nss)
4714 cli_err(appctx, "cannot allocate memory for new string.\n");
4715 else {
Misiek2da082d2017-01-09 09:40:42 +01004716 free(sv->agent.send_string);
4717 sv->agent.send_string = nss;
4718 sv->agent.send_string_len = strlen(args[4]);
4719 }
4720 }
4721 }
William Lallemand222baf22016-11-19 02:00:33 +01004722 else if (strcmp(args[3], "check-port") == 0) {
4723 int i = 0;
4724 if (strl2irc(args[4], strlen(args[4]), &i) != 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004725 cli_err(appctx, "'set server <srv> check-port' expects an integer as argument.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004726 goto out_unlock;
William Lallemand222baf22016-11-19 02:00:33 +01004727 }
4728 if ((i < 0) || (i > 65535)) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004729 cli_err(appctx, "provided port is not valid.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004730 goto out_unlock;
William Lallemand222baf22016-11-19 02:00:33 +01004731 }
4732 /* prevent the update of port to 0 if MAPPORTS are in use */
4733 if ((sv->flags & SRV_F_MAPPORTS) && (i == 0)) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004734 cli_err(appctx, "can't unset 'port' since MAPPORTS is in use.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004735 goto out_unlock;
William Lallemand222baf22016-11-19 02:00:33 +01004736 }
4737 sv->check.port = i;
Willy Tarreau9d008692019-08-09 11:21:01 +02004738 cli_msg(appctx, LOG_NOTICE, "health check port updated.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004739 }
4740 else if (strcmp(args[3], "addr") == 0) {
4741 char *addr = NULL;
4742 char *port = NULL;
4743 if (strlen(args[4]) == 0) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004744 cli_err(appctx, "set server <b>/<s> addr requires an address and optionally a port.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004745 goto out_unlock;
William Lallemand222baf22016-11-19 02:00:33 +01004746 }
4747 else {
4748 addr = args[4];
4749 }
4750 if (strcmp(args[5], "port") == 0) {
4751 port = args[6];
4752 }
4753 warning = update_server_addr_port(sv, addr, port, "stats socket command");
Willy Tarreau9d008692019-08-09 11:21:01 +02004754 if (warning)
4755 cli_msg(appctx, LOG_WARNING, warning);
William Lallemand222baf22016-11-19 02:00:33 +01004756 srv_clr_admin_flag(sv, SRV_ADMF_RMAINT);
4757 }
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004758 else if (strcmp(args[3], "fqdn") == 0) {
4759 if (!*args[4]) {
Willy Tarreau9d008692019-08-09 11:21:01 +02004760 cli_err(appctx, "set server <b>/<s> fqdn requires a FQDN.\n");
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004761 goto out_unlock;
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004762 }
Olivier Houchardd16bfe62017-10-31 15:21:19 +01004763 warning = update_server_fqdn(sv, args[4], "stats socket command", 0);
Willy Tarreau9d008692019-08-09 11:21:01 +02004764 if (warning)
4765 cli_msg(appctx, LOG_WARNING, warning);
Frédéric Lécailleb418c122017-04-26 11:24:02 +02004766 }
William Lallemand222baf22016-11-19 02:00:33 +01004767 else {
Willy Tarreau9d008692019-08-09 11:21:01 +02004768 cli_err(appctx,
4769 "'set server <srv>' only supports 'agent', 'health', 'state',"
4770 " 'weight', 'addr', 'fqdn' and 'check-port'.\n");
William Lallemand222baf22016-11-19 02:00:33 +01004771 }
Willy Tarreau6ce38f32017-11-05 10:19:23 +01004772 out_unlock:
Christopher Faulet2a944ee2017-11-07 10:42:54 +01004773 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
William Lallemand222baf22016-11-19 02:00:33 +01004774 return 1;
4775}
4776
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004777static int cli_parse_get_weight(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand6b160942016-11-22 12:34:35 +01004778{
4779 struct stream_interface *si = appctx->owner;
4780 struct proxy *px;
4781 struct server *sv;
4782 char *line;
4783
4784
4785 /* split "backend/server" and make <line> point to server */
4786 for (line = args[2]; *line; line++)
4787 if (*line == '/') {
4788 *line++ = '\0';
4789 break;
4790 }
4791
Willy Tarreau9d008692019-08-09 11:21:01 +02004792 if (!*line)
4793 return cli_err(appctx, "Require 'backend/server'.\n");
William Lallemand6b160942016-11-22 12:34:35 +01004794
Willy Tarreau9d008692019-08-09 11:21:01 +02004795 if (!get_backend_server(args[2], line, &px, &sv))
4796 return cli_err(appctx, px ? "No such server.\n" : "No such backend.\n");
William Lallemand6b160942016-11-22 12:34:35 +01004797
4798 /* return server's effective weight at the moment */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004799 snprintf(trash.area, trash.size, "%d (initial %d)\n", sv->uweight,
4800 sv->iweight);
4801 if (ci_putstr(si_ic(si), trash.area) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01004802 si_rx_room_blk(si);
Christopher Faulet90b5abe2016-12-05 14:25:08 +01004803 return 0;
4804 }
William Lallemand6b160942016-11-22 12:34:35 +01004805 return 1;
4806}
4807
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004808/* Parse a "set weight" command.
4809 *
4810 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004811 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004812static int cli_parse_set_weight(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand6b160942016-11-22 12:34:35 +01004813{
4814 struct server *sv;
4815 const char *warning;
4816
4817 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4818 return 1;
4819
4820 sv = cli_find_server(appctx, args[2]);
4821 if (!sv)
4822 return 1;
4823
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004824 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
4825
William Lallemand6b160942016-11-22 12:34:35 +01004826 warning = server_parse_weight_change_request(sv, args[3]);
Willy Tarreau9d008692019-08-09 11:21:01 +02004827 if (warning)
4828 cli_err(appctx, warning);
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004829
4830 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
4831
William Lallemand6b160942016-11-22 12:34:35 +01004832 return 1;
4833}
4834
Willy Tarreau46b7f532018-08-21 11:54:26 +02004835/* parse a "set maxconn server" command. It always returns 1.
4836 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004837 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004838 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004839static int cli_parse_set_maxconn_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreaub8026272016-11-23 11:26:56 +01004840{
4841 struct server *sv;
4842 const char *warning;
4843
4844 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4845 return 1;
4846
4847 sv = cli_find_server(appctx, args[3]);
4848 if (!sv)
4849 return 1;
4850
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004851 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
4852
Willy Tarreaub8026272016-11-23 11:26:56 +01004853 warning = server_parse_maxconn_change_request(sv, args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02004854 if (warning)
4855 cli_err(appctx, warning);
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004856
4857 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
4858
Willy Tarreaub8026272016-11-23 11:26:56 +01004859 return 1;
4860}
William Lallemand6b160942016-11-22 12:34:35 +01004861
Willy Tarreau46b7f532018-08-21 11:54:26 +02004862/* parse a "disable agent" command. It always returns 1.
4863 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004864 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004865 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004866static int cli_parse_disable_agent(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004867{
4868 struct server *sv;
4869
4870 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4871 return 1;
4872
4873 sv = cli_find_server(appctx, args[2]);
4874 if (!sv)
4875 return 1;
4876
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004877 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004878 sv->agent.state &= ~CHK_ST_ENABLED;
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004879 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004880 return 1;
4881}
4882
Willy Tarreau46b7f532018-08-21 11:54:26 +02004883/* parse a "disable health" 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_health(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau2c04eda2016-11-24 12:51:04 +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 Tarreau2c04eda2016-11-24 12:51:04 +01004899 sv->check.state &= ~CHK_ST_ENABLED;
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004900 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004901 return 1;
4902}
4903
Willy Tarreau46b7f532018-08-21 11:54:26 +02004904/* parse a "disable server" 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_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauffb4d582016-11-24 12:47:00 +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 Tarreauffb4d582016-11-24 12:47:00 +01004920 srv_adm_set_maint(sv);
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004921 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreauffb4d582016-11-24 12:47:00 +01004922 return 1;
4923}
4924
Willy Tarreau46b7f532018-08-21 11:54:26 +02004925/* parse a "enable agent" 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_enable_agent(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau58d9cb72016-11-24 12:56:01 +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 Tarreau9d008692019-08-09 11:21:01 +02004940 if (!(sv->agent.state & CHK_ST_CONFIGURED))
4941 return cli_err(appctx, "Agent was not configured on this server, cannot enable.\n");
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004942
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004943 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004944 sv->agent.state |= CHK_ST_ENABLED;
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004945 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004946 return 1;
4947}
4948
Willy Tarreau46b7f532018-08-21 11:54:26 +02004949/* parse a "enable health" command. It always returns 1.
4950 *
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004951 * Grabs the server lock.
Willy Tarreau46b7f532018-08-21 11:54:26 +02004952 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02004953static int cli_parse_enable_health(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004954{
4955 struct server *sv;
4956
4957 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
4958 return 1;
4959
4960 sv = cli_find_server(appctx, args[2]);
4961 if (!sv)
4962 return 1;
4963
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004964 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004965 sv->check.state |= CHK_ST_ENABLED;
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004966 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004967 return 1;
4968}
4969
Willy Tarreau46b7f532018-08-21 11:54:26 +02004970/* parse a "enable server" 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_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauffb4d582016-11-24 12:47:00 +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 Tarreauffb4d582016-11-24 12:47:00 +01004986 srv_adm_set_ready(sv);
Olivier Houcharde9bad0a2018-01-17 17:39:34 +01004987 if (!(sv->flags & SRV_F_COOKIESET)
4988 && (sv->proxy->ck_opts & PR_CK_DYNAMIC) &&
4989 sv->cookie)
4990 srv_check_for_dup_dyncookie(sv);
Willy Tarreau3bcc2692018-08-21 15:35:31 +02004991 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreauffb4d582016-11-24 12:47:00 +01004992 return 1;
4993}
4994
William Lallemand222baf22016-11-19 02:00:33 +01004995/* register cli keywords */
4996static struct cli_kw_list cli_kws = {{ },{
Willy Tarreau58d9cb72016-11-24 12:56:01 +01004997 { { "disable", "agent", NULL }, "disable agent : disable agent checks (use 'set server' instead)", cli_parse_disable_agent, NULL },
Willy Tarreau2c04eda2016-11-24 12:51:04 +01004998 { { "disable", "health", NULL }, "disable health : disable health checks (use 'set server' instead)", cli_parse_disable_health, NULL },
Willy Tarreauffb4d582016-11-24 12:47:00 +01004999 { { "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 +01005000 { { "enable", "agent", NULL }, "enable agent : enable agent checks (use 'set server' instead)", cli_parse_enable_agent, NULL },
Willy Tarreau2c04eda2016-11-24 12:51:04 +01005001 { { "enable", "health", NULL }, "enable health : enable health checks (use 'set server' instead)", cli_parse_enable_health, NULL },
Willy Tarreauffb4d582016-11-24 12:47:00 +01005002 { { "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 +01005003 { { "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 +01005004 { { "set", "server", NULL }, "set server : change a server's state, weight or address", cli_parse_set_server },
William Lallemand6b160942016-11-22 12:34:35 +01005005 { { "get", "weight", NULL }, "get weight : report a server's current weight", cli_parse_get_weight },
5006 { { "set", "weight", NULL }, "set weight : change a server's weight (deprecated)", cli_parse_set_weight },
5007
William Lallemand222baf22016-11-19 02:00:33 +01005008 {{},}
5009}};
5010
Willy Tarreau0108d902018-11-25 19:14:37 +01005011INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01005012
Emeric Brun64cc49c2017-10-03 14:46:45 +02005013/*
5014 * This function applies server's status changes, it is
5015 * is designed to be called asynchronously.
5016 *
Willy Tarreau46b7f532018-08-21 11:54:26 +02005017 * Must be called with the server lock held.
Emeric Brun64cc49c2017-10-03 14:46:45 +02005018 */
Willy Tarreau3ff577e2018-08-02 11:48:52 +02005019static void srv_update_status(struct server *s)
Emeric Brun64cc49c2017-10-03 14:46:45 +02005020{
5021 struct check *check = &s->check;
5022 int xferred;
5023 struct proxy *px = s->proxy;
5024 int prev_srv_count = s->proxy->srv_bck + s->proxy->srv_act;
5025 int srv_was_stopping = (s->cur_state == SRV_ST_STOPPING) || (s->cur_admin & SRV_ADMF_DRAIN);
5026 int log_level;
Willy Tarreau83061a82018-07-13 11:56:34 +02005027 struct buffer *tmptrash = NULL;
Emeric Brun64cc49c2017-10-03 14:46:45 +02005028
Emeric Brun64cc49c2017-10-03 14:46:45 +02005029 /* If currently main is not set we try to apply pending state changes */
5030 if (!(s->cur_admin & SRV_ADMF_MAINT)) {
5031 int next_admin;
5032
5033 /* Backup next admin */
5034 next_admin = s->next_admin;
5035
5036 /* restore current admin state */
5037 s->next_admin = s->cur_admin;
5038
5039 if ((s->cur_state != SRV_ST_STOPPED) && (s->next_state == SRV_ST_STOPPED)) {
5040 s->last_change = now.tv_sec;
5041 if (s->proxy->lbprm.set_server_status_down)
5042 s->proxy->lbprm.set_server_status_down(s);
5043
5044 if (s->onmarkeddown & HANA_ONMARKEDDOWN_SHUTDOWNSESSIONS)
5045 srv_shutdown_streams(s, SF_ERR_DOWN);
5046
5047 /* we might have streams queued on this server and waiting for
5048 * a connection. Those which are redispatchable will be queued
5049 * to another server or to the proxy itself.
5050 */
5051 xferred = pendconn_redistribute(s);
5052
5053 tmptrash = alloc_trash_chunk();
5054 if (tmptrash) {
5055 chunk_printf(tmptrash,
5056 "%sServer %s/%s is DOWN", s->flags & SRV_F_BACKUP ? "Backup " : "",
5057 s->proxy->id, s->id);
5058
Emeric Brun5a133512017-10-19 14:42:30 +02005059 srv_append_status(tmptrash, s, NULL, xferred, 0);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005060 ha_warning("%s.\n", tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005061
5062 /* we don't send an alert if the server was previously paused */
5063 log_level = srv_was_stopping ? LOG_NOTICE : LOG_ALERT;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005064 send_log(s->proxy, log_level, "%s.\n",
5065 tmptrash->area);
5066 send_email_alert(s, log_level, "%s",
5067 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005068 free_trash_chunk(tmptrash);
5069 tmptrash = NULL;
5070 }
5071 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5072 set_backend_down(s->proxy);
5073
5074 s->counters.down_trans++;
5075 }
5076 else if ((s->cur_state != SRV_ST_STOPPING) && (s->next_state == SRV_ST_STOPPING)) {
5077 s->last_change = now.tv_sec;
5078 if (s->proxy->lbprm.set_server_status_down)
5079 s->proxy->lbprm.set_server_status_down(s);
5080
5081 /* we might have streams queued on this server and waiting for
5082 * a connection. Those which are redispatchable will be queued
5083 * to another server or to the proxy itself.
5084 */
5085 xferred = pendconn_redistribute(s);
5086
5087 tmptrash = alloc_trash_chunk();
5088 if (tmptrash) {
5089 chunk_printf(tmptrash,
5090 "%sServer %s/%s is stopping", s->flags & SRV_F_BACKUP ? "Backup " : "",
5091 s->proxy->id, s->id);
5092
Emeric Brun5a133512017-10-19 14:42:30 +02005093 srv_append_status(tmptrash, s, NULL, xferred, 0);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005094
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005095 ha_warning("%s.\n", tmptrash->area);
5096 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5097 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005098 free_trash_chunk(tmptrash);
5099 tmptrash = NULL;
5100 }
5101
5102 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5103 set_backend_down(s->proxy);
5104 }
5105 else if (((s->cur_state != SRV_ST_RUNNING) && (s->next_state == SRV_ST_RUNNING))
5106 || ((s->cur_state != SRV_ST_STARTING) && (s->next_state == SRV_ST_STARTING))) {
5107 if (s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) {
5108 if (s->proxy->last_change < now.tv_sec) // ignore negative times
5109 s->proxy->down_time += now.tv_sec - s->proxy->last_change;
5110 s->proxy->last_change = now.tv_sec;
5111 }
5112
5113 if (s->next_state == SRV_ST_STOPPED && s->last_change < now.tv_sec) // ignore negative times
5114 s->down_time += now.tv_sec - s->last_change;
5115
5116 s->last_change = now.tv_sec;
5117 if (s->next_state == SRV_ST_STARTING)
5118 task_schedule(s->warmup, tick_add(now_ms, MS_TO_TICKS(MAX(1000, s->slowstart / 20))));
5119
Willy Tarreau3ff577e2018-08-02 11:48:52 +02005120 server_recalc_eweight(s, 0);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005121 /* now propagate the status change to any LB algorithms */
5122 if (px->lbprm.update_server_eweight)
5123 px->lbprm.update_server_eweight(s);
5124 else if (srv_willbe_usable(s)) {
5125 if (px->lbprm.set_server_status_up)
5126 px->lbprm.set_server_status_up(s);
5127 }
5128 else {
5129 if (px->lbprm.set_server_status_down)
5130 px->lbprm.set_server_status_down(s);
5131 }
5132
5133 /* If the server is set with "on-marked-up shutdown-backup-sessions",
5134 * and it's not a backup server and its effective weight is > 0,
5135 * then it can accept new connections, so we shut down all streams
5136 * on all backup servers.
5137 */
5138 if ((s->onmarkedup & HANA_ONMARKEDUP_SHUTDOWNBACKUPSESSIONS) &&
5139 !(s->flags & SRV_F_BACKUP) && s->next_eweight)
5140 srv_shutdown_backup_streams(s->proxy, SF_ERR_UP);
5141
5142 /* check if we can handle some connections queued at the proxy. We
5143 * will take as many as we can handle.
5144 */
5145 xferred = pendconn_grab_from_px(s);
5146
5147 tmptrash = alloc_trash_chunk();
5148 if (tmptrash) {
5149 chunk_printf(tmptrash,
5150 "%sServer %s/%s is UP", s->flags & SRV_F_BACKUP ? "Backup " : "",
5151 s->proxy->id, s->id);
5152
Emeric Brun5a133512017-10-19 14:42:30 +02005153 srv_append_status(tmptrash, s, NULL, xferred, 0);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005154 ha_warning("%s.\n", tmptrash->area);
5155 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5156 tmptrash->area);
5157 send_email_alert(s, LOG_NOTICE, "%s",
5158 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005159 free_trash_chunk(tmptrash);
5160 tmptrash = NULL;
5161 }
5162
5163 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5164 set_backend_down(s->proxy);
5165 }
5166 else if (s->cur_eweight != s->next_eweight) {
5167 /* now propagate the status change to any LB algorithms */
5168 if (px->lbprm.update_server_eweight)
5169 px->lbprm.update_server_eweight(s);
5170 else if (srv_willbe_usable(s)) {
5171 if (px->lbprm.set_server_status_up)
5172 px->lbprm.set_server_status_up(s);
5173 }
5174 else {
5175 if (px->lbprm.set_server_status_down)
5176 px->lbprm.set_server_status_down(s);
5177 }
5178
5179 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5180 set_backend_down(s->proxy);
5181 }
5182
5183 s->next_admin = next_admin;
5184 }
5185
Emeric Brun5a133512017-10-19 14:42:30 +02005186 /* reset operational state change */
5187 *s->op_st_chg.reason = 0;
5188 s->op_st_chg.status = s->op_st_chg.code = -1;
5189 s->op_st_chg.duration = 0;
Emeric Brun64cc49c2017-10-03 14:46:45 +02005190
5191 /* Now we try to apply pending admin changes */
5192
5193 /* Maintenance must also disable health checks */
5194 if (!(s->cur_admin & SRV_ADMF_MAINT) && (s->next_admin & SRV_ADMF_MAINT)) {
5195 if (s->check.state & CHK_ST_ENABLED) {
5196 s->check.state |= CHK_ST_PAUSED;
5197 check->health = 0;
5198 }
5199
5200 if (s->cur_state == SRV_ST_STOPPED) { /* server was already down */
Olivier Houchard796a2b32017-10-24 17:42:47 +02005201 tmptrash = alloc_trash_chunk();
5202 if (tmptrash) {
5203 chunk_printf(tmptrash,
5204 "%sServer %s/%s was DOWN and now enters maintenance%s%s%s",
5205 s->flags & SRV_F_BACKUP ? "Backup " : "", s->proxy->id, s->id,
5206 *(s->adm_st_chg_cause) ? " (" : "", s->adm_st_chg_cause, *(s->adm_st_chg_cause) ? ")" : "");
Emeric Brun64cc49c2017-10-03 14:46:45 +02005207
Olivier Houchard796a2b32017-10-24 17:42:47 +02005208 srv_append_status(tmptrash, s, NULL, -1, (s->next_admin & SRV_ADMF_FMAINT));
Emeric Brun64cc49c2017-10-03 14:46:45 +02005209
Olivier Houchard796a2b32017-10-24 17:42:47 +02005210 if (!(global.mode & MODE_STARTING)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005211 ha_warning("%s.\n", tmptrash->area);
5212 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5213 tmptrash->area);
Olivier Houchard796a2b32017-10-24 17:42:47 +02005214 }
5215 free_trash_chunk(tmptrash);
5216 tmptrash = NULL;
Emeric Brun64cc49c2017-10-03 14:46:45 +02005217 }
Emeric Brun8f298292017-12-06 16:47:17 +01005218 /* commit new admin status */
5219
5220 s->cur_admin = s->next_admin;
Emeric Brun64cc49c2017-10-03 14:46:45 +02005221 }
5222 else { /* server was still running */
5223 check->health = 0; /* failure */
5224 s->last_change = now.tv_sec;
Emeric Brune3114802017-12-21 14:42:26 +01005225
5226 s->next_state = SRV_ST_STOPPED;
Emeric Brun64cc49c2017-10-03 14:46:45 +02005227 if (s->proxy->lbprm.set_server_status_down)
5228 s->proxy->lbprm.set_server_status_down(s);
5229
Emeric Brun64cc49c2017-10-03 14:46:45 +02005230 if (s->onmarkeddown & HANA_ONMARKEDDOWN_SHUTDOWNSESSIONS)
5231 srv_shutdown_streams(s, SF_ERR_DOWN);
5232
5233 /* we might have streams queued on this server and waiting for
5234 * a connection. Those which are redispatchable will be queued
5235 * to another server or to the proxy itself.
5236 */
5237 xferred = pendconn_redistribute(s);
5238
5239 tmptrash = alloc_trash_chunk();
5240 if (tmptrash) {
5241 chunk_printf(tmptrash,
5242 "%sServer %s/%s is going DOWN for maintenance%s%s%s",
5243 s->flags & SRV_F_BACKUP ? "Backup " : "",
5244 s->proxy->id, s->id,
5245 *(s->adm_st_chg_cause) ? " (" : "", s->adm_st_chg_cause, *(s->adm_st_chg_cause) ? ")" : "");
5246
5247 srv_append_status(tmptrash, s, NULL, xferred, (s->next_admin & SRV_ADMF_FMAINT));
5248
5249 if (!(global.mode & MODE_STARTING)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005250 ha_warning("%s.\n", tmptrash->area);
5251 send_log(s->proxy, srv_was_stopping ? LOG_NOTICE : LOG_ALERT, "%s.\n",
5252 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005253 }
5254 free_trash_chunk(tmptrash);
5255 tmptrash = NULL;
5256 }
5257 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5258 set_backend_down(s->proxy);
5259
5260 s->counters.down_trans++;
5261 }
5262 }
5263 else if ((s->cur_admin & SRV_ADMF_MAINT) && !(s->next_admin & SRV_ADMF_MAINT)) {
5264 /* OK here we're leaving maintenance, we have many things to check,
5265 * because the server might possibly be coming back up depending on
5266 * its state. In practice, leaving maintenance means that we should
5267 * immediately turn to UP (more or less the slowstart) under the
5268 * following conditions :
5269 * - server is neither checked nor tracked
5270 * - server tracks another server which is not checked
5271 * - server tracks another server which is already up
5272 * Which sums up as something simpler :
5273 * "either the tracking server is up or the server's checks are disabled
5274 * or up". Otherwise we only re-enable health checks. There's a special
5275 * case associated to the stopping state which can be inherited. Note
5276 * that the server might still be in drain mode, which is naturally dealt
5277 * with by the lower level functions.
5278 */
5279
5280 if (s->check.state & CHK_ST_ENABLED) {
5281 s->check.state &= ~CHK_ST_PAUSED;
5282 check->health = check->rise; /* start OK but check immediately */
5283 }
5284
5285 if ((!s->track || s->track->next_state != SRV_ST_STOPPED) &&
5286 (!(s->agent.state & CHK_ST_ENABLED) || (s->agent.health >= s->agent.rise)) &&
5287 (!(s->check.state & CHK_ST_ENABLED) || (s->check.health >= s->check.rise))) {
5288 if (s->track && s->track->next_state == SRV_ST_STOPPING) {
5289 s->next_state = SRV_ST_STOPPING;
5290 }
5291 else {
5292 s->next_state = SRV_ST_STARTING;
5293 if (s->slowstart > 0)
5294 task_schedule(s->warmup, tick_add(now_ms, MS_TO_TICKS(MAX(1000, s->slowstart / 20))));
5295 else
5296 s->next_state = SRV_ST_RUNNING;
5297 }
5298
5299 }
5300
5301 tmptrash = alloc_trash_chunk();
5302 if (tmptrash) {
5303 if (!(s->next_admin & SRV_ADMF_FMAINT) && (s->cur_admin & SRV_ADMF_FMAINT)) {
5304 chunk_printf(tmptrash,
5305 "%sServer %s/%s is %s/%s (leaving forced maintenance)",
5306 s->flags & SRV_F_BACKUP ? "Backup " : "",
5307 s->proxy->id, s->id,
5308 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP",
5309 (s->next_admin & SRV_ADMF_DRAIN) ? "DRAIN" : "READY");
5310 }
5311 if (!(s->next_admin & SRV_ADMF_RMAINT) && (s->cur_admin & SRV_ADMF_RMAINT)) {
5312 chunk_printf(tmptrash,
5313 "%sServer %s/%s ('%s') is %s/%s (resolves again)",
5314 s->flags & SRV_F_BACKUP ? "Backup " : "",
5315 s->proxy->id, s->id, s->hostname,
5316 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP",
5317 (s->next_admin & SRV_ADMF_DRAIN) ? "DRAIN" : "READY");
5318 }
5319 if (!(s->next_admin & SRV_ADMF_IMAINT) && (s->cur_admin & SRV_ADMF_IMAINT)) {
5320 chunk_printf(tmptrash,
5321 "%sServer %s/%s is %s/%s (leaving maintenance)",
5322 s->flags & SRV_F_BACKUP ? "Backup " : "",
5323 s->proxy->id, s->id,
5324 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP",
5325 (s->next_admin & SRV_ADMF_DRAIN) ? "DRAIN" : "READY");
5326 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005327 ha_warning("%s.\n", tmptrash->area);
5328 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5329 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005330 free_trash_chunk(tmptrash);
5331 tmptrash = NULL;
5332 }
5333
Willy Tarreau3ff577e2018-08-02 11:48:52 +02005334 server_recalc_eweight(s, 0);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005335 /* now propagate the status change to any LB algorithms */
5336 if (px->lbprm.update_server_eweight)
5337 px->lbprm.update_server_eweight(s);
5338 else if (srv_willbe_usable(s)) {
5339 if (px->lbprm.set_server_status_up)
5340 px->lbprm.set_server_status_up(s);
5341 }
5342 else {
5343 if (px->lbprm.set_server_status_down)
5344 px->lbprm.set_server_status_down(s);
5345 }
5346
5347 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5348 set_backend_down(s->proxy);
5349
Willy Tarreau6a78e612018-08-07 10:14:53 +02005350 /* If the server is set with "on-marked-up shutdown-backup-sessions",
5351 * and it's not a backup server and its effective weight is > 0,
5352 * then it can accept new connections, so we shut down all streams
5353 * on all backup servers.
5354 */
5355 if ((s->onmarkedup & HANA_ONMARKEDUP_SHUTDOWNBACKUPSESSIONS) &&
5356 !(s->flags & SRV_F_BACKUP) && s->next_eweight)
5357 srv_shutdown_backup_streams(s->proxy, SF_ERR_UP);
5358
5359 /* check if we can handle some connections queued at the proxy. We
5360 * will take as many as we can handle.
5361 */
5362 xferred = pendconn_grab_from_px(s);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005363 }
5364 else if (s->next_admin & SRV_ADMF_MAINT) {
5365 /* remaining in maintenance mode, let's inform precisely about the
5366 * situation.
5367 */
5368 if (!(s->next_admin & SRV_ADMF_FMAINT) && (s->cur_admin & SRV_ADMF_FMAINT)) {
5369 tmptrash = alloc_trash_chunk();
5370 if (tmptrash) {
5371 chunk_printf(tmptrash,
5372 "%sServer %s/%s is leaving forced maintenance but remains in maintenance",
5373 s->flags & SRV_F_BACKUP ? "Backup " : "",
5374 s->proxy->id, s->id);
5375
5376 if (s->track) /* normally it's mandatory here */
5377 chunk_appendf(tmptrash, " via %s/%s",
5378 s->track->proxy->id, s->track->id);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005379 ha_warning("%s.\n", tmptrash->area);
5380 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5381 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005382 free_trash_chunk(tmptrash);
5383 tmptrash = NULL;
5384 }
5385 }
5386 if (!(s->next_admin & SRV_ADMF_RMAINT) && (s->cur_admin & SRV_ADMF_RMAINT)) {
5387 tmptrash = alloc_trash_chunk();
5388 if (tmptrash) {
5389 chunk_printf(tmptrash,
5390 "%sServer %s/%s ('%s') resolves again but remains in maintenance",
5391 s->flags & SRV_F_BACKUP ? "Backup " : "",
5392 s->proxy->id, s->id, s->hostname);
5393
5394 if (s->track) /* normally it's mandatory here */
5395 chunk_appendf(tmptrash, " via %s/%s",
5396 s->track->proxy->id, s->track->id);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005397 ha_warning("%s.\n", tmptrash->area);
5398 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5399 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005400 free_trash_chunk(tmptrash);
5401 tmptrash = NULL;
5402 }
5403 }
5404 else if (!(s->next_admin & SRV_ADMF_IMAINT) && (s->cur_admin & SRV_ADMF_IMAINT)) {
5405 tmptrash = alloc_trash_chunk();
5406 if (tmptrash) {
5407 chunk_printf(tmptrash,
5408 "%sServer %s/%s remains in forced maintenance",
5409 s->flags & SRV_F_BACKUP ? "Backup " : "",
5410 s->proxy->id, s->id);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005411 ha_warning("%s.\n", tmptrash->area);
5412 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5413 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005414 free_trash_chunk(tmptrash);
5415 tmptrash = NULL;
5416 }
5417 }
5418 /* don't report anything when leaving drain mode and remaining in maintenance */
5419
5420 s->cur_admin = s->next_admin;
5421 }
5422
5423 if (!(s->next_admin & SRV_ADMF_MAINT)) {
5424 if (!(s->cur_admin & SRV_ADMF_DRAIN) && (s->next_admin & SRV_ADMF_DRAIN)) {
5425 /* drain state is applied only if not yet in maint */
5426
5427 s->last_change = now.tv_sec;
5428 if (px->lbprm.set_server_status_down)
5429 px->lbprm.set_server_status_down(s);
5430
5431 /* we might have streams queued on this server and waiting for
5432 * a connection. Those which are redispatchable will be queued
5433 * to another server or to the proxy itself.
5434 */
5435 xferred = pendconn_redistribute(s);
5436
5437 tmptrash = alloc_trash_chunk();
5438 if (tmptrash) {
5439 chunk_printf(tmptrash, "%sServer %s/%s enters drain state%s%s%s",
5440 s->flags & SRV_F_BACKUP ? "Backup " : "", s->proxy->id, s->id,
5441 *(s->adm_st_chg_cause) ? " (" : "", s->adm_st_chg_cause, *(s->adm_st_chg_cause) ? ")" : "");
5442
5443 srv_append_status(tmptrash, s, NULL, xferred, (s->next_admin & SRV_ADMF_FDRAIN));
5444
5445 if (!(global.mode & MODE_STARTING)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005446 ha_warning("%s.\n", tmptrash->area);
5447 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5448 tmptrash->area);
5449 send_email_alert(s, LOG_NOTICE, "%s",
5450 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005451 }
5452 free_trash_chunk(tmptrash);
5453 tmptrash = NULL;
5454 }
5455
5456 if (prev_srv_count && s->proxy->srv_bck == 0 && s->proxy->srv_act == 0)
5457 set_backend_down(s->proxy);
5458 }
5459 else if ((s->cur_admin & SRV_ADMF_DRAIN) && !(s->next_admin & SRV_ADMF_DRAIN)) {
5460 /* OK completely leaving drain mode */
5461 if (s->proxy->srv_bck == 0 && s->proxy->srv_act == 0) {
5462 if (s->proxy->last_change < now.tv_sec) // ignore negative times
5463 s->proxy->down_time += now.tv_sec - s->proxy->last_change;
5464 s->proxy->last_change = now.tv_sec;
5465 }
5466
5467 if (s->last_change < now.tv_sec) // ignore negative times
5468 s->down_time += now.tv_sec - s->last_change;
5469 s->last_change = now.tv_sec;
Willy Tarreau3ff577e2018-08-02 11:48:52 +02005470 server_recalc_eweight(s, 0);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005471
5472 tmptrash = alloc_trash_chunk();
5473 if (tmptrash) {
5474 if (!(s->next_admin & SRV_ADMF_FDRAIN)) {
5475 chunk_printf(tmptrash,
5476 "%sServer %s/%s is %s (leaving forced drain)",
5477 s->flags & SRV_F_BACKUP ? "Backup " : "",
5478 s->proxy->id, s->id,
5479 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP");
5480 }
5481 else {
5482 chunk_printf(tmptrash,
5483 "%sServer %s/%s is %s (leaving drain)",
5484 s->flags & SRV_F_BACKUP ? "Backup " : "",
5485 s->proxy->id, s->id,
5486 (s->next_state == SRV_ST_STOPPED) ? "DOWN" : "UP");
5487 if (s->track) /* normally it's mandatory here */
5488 chunk_appendf(tmptrash, " via %s/%s",
5489 s->track->proxy->id, s->track->id);
5490 }
5491
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005492 ha_warning("%s.\n", tmptrash->area);
5493 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5494 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005495 free_trash_chunk(tmptrash);
5496 tmptrash = NULL;
5497 }
5498
5499 /* now propagate the status change to any LB algorithms */
5500 if (px->lbprm.update_server_eweight)
5501 px->lbprm.update_server_eweight(s);
5502 else if (srv_willbe_usable(s)) {
5503 if (px->lbprm.set_server_status_up)
5504 px->lbprm.set_server_status_up(s);
5505 }
5506 else {
5507 if (px->lbprm.set_server_status_down)
5508 px->lbprm.set_server_status_down(s);
5509 }
5510 }
5511 else if ((s->next_admin & SRV_ADMF_DRAIN)) {
5512 /* remaining in drain mode after removing one of its flags */
5513
5514 tmptrash = alloc_trash_chunk();
5515 if (tmptrash) {
5516 if (!(s->next_admin & SRV_ADMF_FDRAIN)) {
5517 chunk_printf(tmptrash,
5518 "%sServer %s/%s is leaving forced drain but remains in drain mode",
5519 s->flags & SRV_F_BACKUP ? "Backup " : "",
5520 s->proxy->id, s->id);
5521
5522 if (s->track) /* normally it's mandatory here */
5523 chunk_appendf(tmptrash, " via %s/%s",
5524 s->track->proxy->id, s->track->id);
5525 }
5526 else {
5527 chunk_printf(tmptrash,
5528 "%sServer %s/%s remains in forced drain mode",
5529 s->flags & SRV_F_BACKUP ? "Backup " : "",
5530 s->proxy->id, s->id);
5531 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005532 ha_warning("%s.\n", tmptrash->area);
5533 send_log(s->proxy, LOG_NOTICE, "%s.\n",
5534 tmptrash->area);
Emeric Brun64cc49c2017-10-03 14:46:45 +02005535 free_trash_chunk(tmptrash);
5536 tmptrash = NULL;
5537 }
5538
5539 /* commit new admin status */
5540
5541 s->cur_admin = s->next_admin;
5542 }
5543 }
5544
5545 /* Re-set log strings to empty */
Emeric Brun64cc49c2017-10-03 14:46:45 +02005546 *s->adm_st_chg_cause = 0;
5547}
Emeric Brun64cc49c2017-10-03 14:46:45 +02005548
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005549struct task *srv_cleanup_toremove_connections(struct task *task, void *context, unsigned short state)
5550{
5551 struct connection *conn;
5552
5553 while ((conn = LIST_POP_LOCKED(&toremove_connections[tid],
5554 struct connection *, list)) != NULL) {
Christopher Faulet73c12072019-04-08 11:23:22 +02005555 conn->mux->destroy(conn->ctx);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005556 }
5557
5558 return task;
5559}
5560
Willy Tarreau980855b2019-02-07 14:59:29 +01005561struct task *srv_cleanup_idle_connections(struct task *task, void *context, unsigned short state)
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005562{
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005563 struct server *srv;
5564 struct eb32_node *eb;
5565 int i;
5566 unsigned int next_wakeup;
5567 int need_wakeup = 0;
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01005568
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005569 HA_SPIN_LOCK(OTHER_LOCK, &idle_conn_srv_lock);
5570 while (1) {
5571 int srv_is_empty = 1;
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01005572
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005573 eb = eb32_lookup_ge(&idle_conn_srv, now_ms - TIMER_LOOK_BACK);
5574 if (!eb) {
5575 /* we might have reached the end of the tree, typically because
5576 * <now_ms> is in the first half and we're first scanning the last
5577 * half. Let's loop back to the beginning of the tree now.
5578 */
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005579
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005580 eb = eb32_first(&idle_conn_srv);
5581 if (likely(!eb))
5582 break;
5583 }
5584 if (tick_is_lt(now_ms, eb->key)) {
5585 /* timer not expired yet, revisit it later */
5586 next_wakeup = eb->key;
5587 need_wakeup = 1;
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005588 break;
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005589 }
5590 srv = eb32_entry(eb, struct server, idle_node);
5591 for (i = 0; i < global.nbthread; i++) {
5592 int max_conn = (srv->curr_idle_thr[i] / 2) +
5593 (srv->curr_idle_thr[i] & 1);
5594 int j;
5595 int did_remove = 0;
5596
Olivier Houchard4be71902019-07-11 15:49:00 +02005597 HA_SPIN_LOCK(OTHER_LOCK, &toremove_lock[i]);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005598 for (j = 0; j < max_conn; j++) {
5599 struct connection *conn = LIST_POP_LOCKED(&srv->idle_orphan_conns[i], struct connection *, list);
5600 if (!conn)
5601 break;
5602 did_remove = 1;
5603 LIST_ADDQ_LOCKED(&toremove_connections[i], &conn->list);
5604 }
Olivier Houchard4be71902019-07-11 15:49:00 +02005605 HA_SPIN_UNLOCK(OTHER_LOCK, &toremove_lock[i]);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005606 if (did_remove && max_conn < srv->curr_idle_thr[i])
5607 srv_is_empty = 0;
5608 if (did_remove)
5609 task_wakeup(idle_conn_cleanup[i], TASK_WOKEN_OTHER);
5610 }
5611 eb32_delete(&srv->idle_node);
5612 if (!srv_is_empty) {
5613 /* There are still more idle connections, add the
5614 * server back in the tree.
5615 */
5616 srv->idle_node.key = tick_add(srv->pool_purge_delay,
5617 now_ms);
5618 eb32_insert(&idle_conn_srv, &srv->idle_node);
5619 }
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005620 }
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005621 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conn_srv_lock);
5622
5623 if (need_wakeup)
5624 task->expire = next_wakeup;
Olivier Houchardb7b3faa2018-12-14 18:15:36 +01005625 else
5626 task->expire = TICK_ETERNITY;
Olivier Houchard9ea5d362019-02-14 18:29:09 +01005627
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01005628 return task;
5629}
Olivier Houchard88698d92019-04-16 19:07:22 +02005630
5631/* config parser for global "tune.pool-{low,high}-fd-ratio" */
5632static int cfg_parse_pool_fd_ratio(char **args, int section_type, struct proxy *curpx,
5633 struct proxy *defpx, const char *file, int line,
5634 char **err)
5635{
5636 int arg = -1;
5637
5638 if (too_many_args(1, args, err, NULL))
5639 return -1;
5640
5641 if (*(args[1]) != 0)
5642 arg = atoi(args[1]);
5643
5644 if (arg < 0 || arg > 100) {
5645 memprintf(err, "'%s' expects an integer argument between 0 and 100.", args[0]);
5646 return -1;
5647 }
5648
5649 if (args[0][10] == 'h')
5650 global.tune.pool_high_ratio = arg;
5651 else
5652 global.tune.pool_low_ratio = arg;
5653 return 0;
5654}
5655
5656/* config keyword parsers */
5657static struct cfg_kw_list cfg_kws = {ILH, {
5658 { CFG_GLOBAL, "tune.pool-high-fd-ratio", cfg_parse_pool_fd_ratio },
5659 { CFG_GLOBAL, "tune.pool-low-fd-ratio", cfg_parse_pool_fd_ratio },
5660 { 0, NULL, NULL }
5661}};
5662
5663INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
5664
Baptiste Assmanna68ca962015-04-14 01:15:08 +02005665/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02005666 * Local variables:
5667 * c-indent-level: 8
5668 * c-basic-offset: 8
5669 * End:
5670 */