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532a450ebc
The stats socket now allows the admin to disable, enable or shutdown a frontend. This can be used when a bug is discovered in a configuration and it's desirable to fix it but the rules in place don't allow to change a running config. Thus it becomes possible to kill the frontend to release the port and start a new one in a separate process. This can also be used to temporarily make haproxy return TCP resets to incoming requests to pretend the service is not bound. For instance, this may be useful to quickly flush a very deep SYN backlog. The frontend check and lookup code was factored with the "set maxconn" usage.
123 lines
4.0 KiB
C
123 lines
4.0 KiB
C
/*
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* include/proto/proxy.h
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* This file defines function prototypes for proxy management.
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*
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* Copyright (C) 2000-2011 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PROTO_PROXY_H
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#define _PROTO_PROXY_H
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#include <common/config.h>
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#include <common/ticks.h>
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#include <common/time.h>
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#include <types/global.h>
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#include <types/proxy.h>
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#include <proto/freq_ctr.h>
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int start_proxies(int verbose);
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struct task *manage_proxy(struct task *t);
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void soft_stop(void);
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int pause_proxy(struct proxy *p);
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int resume_proxy(struct proxy *p);
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void stop_proxy(struct proxy *p);
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void pause_proxies(void);
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void resume_proxies(void);
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int session_set_backend(struct session *s, struct proxy *be);
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const char *proxy_cap_str(int cap);
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const char *proxy_mode_str(int mode);
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struct proxy *findproxy_mode(const char *name, int mode, int cap);
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struct proxy *findproxy(const char *name, int cap);
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struct server *findserver(const struct proxy *px, const char *name);
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int proxy_cfg_ensure_no_http(struct proxy *curproxy);
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void init_new_proxy(struct proxy *p);
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int get_backend_server(const char *bk_name, const char *sv_name,
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struct proxy **bk, struct server **sv);
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/*
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* This function returns a string containing the type of the proxy in a format
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* suitable for error messages, from its capabilities.
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*/
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static inline const char *proxy_type_str(struct proxy *proxy)
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{
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return proxy_cap_str(proxy->cap);
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}
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/* this function initializes all timeouts for proxy p */
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static inline void proxy_reset_timeouts(struct proxy *proxy)
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{
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proxy->timeout.client = TICK_ETERNITY;
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proxy->timeout.tarpit = TICK_ETERNITY;
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proxy->timeout.queue = TICK_ETERNITY;
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proxy->timeout.connect = TICK_ETERNITY;
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proxy->timeout.server = TICK_ETERNITY;
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proxy->timeout.appsession = TICK_ETERNITY;
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proxy->timeout.httpreq = TICK_ETERNITY;
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proxy->timeout.check = TICK_ETERNITY;
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}
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/* increase the number of cumulated connections received on the designated frontend */
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static void inline proxy_inc_fe_conn_ctr(struct listener *l, struct proxy *fe)
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{
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fe->fe_counters.cum_conn++;
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if (l->counters)
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l->counters->cum_conn++;
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update_freq_ctr(&fe->fe_conn_per_sec, 1);
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if (fe->fe_conn_per_sec.curr_ctr > fe->fe_counters.cps_max)
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fe->fe_counters.cps_max = fe->fe_conn_per_sec.curr_ctr;
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}
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/* increase the number of cumulated connections accepted by the designated frontend */
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static void inline proxy_inc_fe_sess_ctr(struct listener *l, struct proxy *fe)
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{
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fe->fe_counters.cum_sess++;
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if (l->counters)
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l->counters->cum_sess++;
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update_freq_ctr(&fe->fe_sess_per_sec, 1);
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if (fe->fe_sess_per_sec.curr_ctr > fe->fe_counters.sps_max)
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fe->fe_counters.sps_max = fe->fe_sess_per_sec.curr_ctr;
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}
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/* increase the number of cumulated connections on the designated backend */
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static void inline proxy_inc_be_ctr(struct proxy *be)
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{
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be->be_counters.cum_conn++;
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update_freq_ctr(&be->be_sess_per_sec, 1);
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if (be->be_sess_per_sec.curr_ctr > be->be_counters.sps_max)
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be->be_counters.sps_max = be->be_sess_per_sec.curr_ctr;
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}
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/* increase the number of cumulated requests on the designated frontend */
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static void inline proxy_inc_fe_req_ctr(struct proxy *fe)
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{
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fe->fe_counters.p.http.cum_req++;
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update_freq_ctr(&fe->fe_req_per_sec, 1);
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if (fe->fe_req_per_sec.curr_ctr > fe->fe_counters.p.http.rps_max)
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fe->fe_counters.p.http.rps_max = fe->fe_req_per_sec.curr_ctr;
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}
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#endif /* _PROTO_PROXY_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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