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haproxy/include/proto/checks.h

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[LICENSE] licensing clarifications
2006-06-15 19:48:13 +00:00
/*
[BIGMOVE] exploded the monolithic haproxy.c file into multiple files. The files are now stored under : - include/haproxy for the generic includes - include/types.h for the structures needed within prototypes - include/proto.h for function prototypes and inline functions - src/*.c for the C files Most include files are now covered by LGPL. A last move still needs to be done to put inline functions under GPL and not LGPL. Version has been set to 1.3.0 in the code but some control still needs to be done before releasing.
2006-06-26 00:48:02 +00:00
include/proto/checks.h
Functions prototypes for the checks.
[MEDIUM] minor update to the task api: let the scheduler queue itself All the tasks callbacks had to requeue the task themselves, and update a global timeout. This was not convenient at all. Now the API has been simplified. The tasks callbacks only have to update their expire timer, and return either a pointer to the task or NULL if the task has been deleted. The scheduler will take care of requeuing the task at the proper place in the wait queue.
2009-03-08 08:38:41 +00:00
Copyright (C) 2000-2009 Willy Tarreau - w@1wt.eu
[LICENSE] licensing clarifications
2006-06-15 19:48:13 +00:00
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation, version 2.1
exclusively.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
[BIGMOVE] exploded the monolithic haproxy.c file into multiple files. The files are now stored under : - include/haproxy for the generic includes - include/types.h for the structures needed within prototypes - include/proto.h for function prototypes and inline functions - src/*.c for the C files Most include files are now covered by LGPL. A last move still needs to be done to put inline functions under GPL and not LGPL. Version has been set to 1.3.0 in the code but some control still needs to be done before releasing.
2006-06-26 00:48:02 +00:00
#ifndef _PROTO_CHECKS_H
#define _PROTO_CHECKS_H
#include <types/task.h>
[CLEANUP] included common/version.h everywhere
2006-06-29 16:54:54 +00:00
#include <common/config.h>
[LICENSE] licensing clarifications
2006-06-15 19:48:13 +00:00
[MEDIUM] Collect & show information about last health check, v3 Collect information about last health check result, including L7 code if possible (for example http or smtp return code) and time took to finish last check. Health check info is provided on both stats pages (html & csv) and logged when a server is marked UP or DOWN. Currently active check are marked with an asterisk, but only in html mode. Currently there are 14 status codes: UNK -> unknown INI -> initializing SOCKERR -> socket error L4OK -> check passed on layer 4, no upper layers testing enabled L4TOUT -> layer 1-4 timeout L4CON -> layer 1-4 connection problem, for example "Connection refused" (tcp rst) or "No route to host" (icmp) L6OK -> check passed on layer 6 L6TOUT -> layer 6 (SSL) timeout L6RSP -> layer 6 invalid response - protocol error L7OK -> check passed on layer 7 L7OKC -> check conditionally passed on layer 7, for example 404 with disable-on-404 L7TOUT -> layer 7 (HTTP/SMTP) timeout L7RSP -> layer 7 invalid response - protocol error L7STS -> layer 7 response error, for example HTTP 5xx
2009-09-23 20:09:24 +00:00
const char *get_check_status_description(short check_status);
const char *get_check_status_info(short check_status);
[MEDIUM] add a maintenance mode to servers This is a first attempt to add a maintenance mode on servers, using the stat socket (in admin level). It can be done with the following command : - disable server <backend>/<server> - enable server <backend>/<server> In this mode, no more checks will be performed on the server and it will be marked as a special DOWN state (MAINT). If some servers were tracking it, they'll go DOWN until the server leaves the maintenance mode. The stats page and the CSV export also display this special state. This can be used to disable the server in haproxy before doing some operations on this server itself. This is a good complement to the "http-check disable-on-404" keyword and works in TCP mode.
2010-01-31 21:34:03 +00:00
void set_server_down(struct server *s);
void set_server_up(struct server *s);
[MEDIUM] Spread health checks even more When one server appears at the same position in multiple backends, it receives all the checks from all the backends exactly at the same time because the health-checks are only spread within a backend but not globally. Attached patch implements per-server start delay in a different way. Checks are now spread globally - not locally to one backend. It also makes them start faster - IMHO there is no need to add a 'server->inter' when calculating first execution. Calculation were moved from cfgparse.c to checks.c. There is a new function start_checks() and now it is not called when haproxy is started in MODE_CHECK. With this patch it is also possible to set a global 'spread-checks' parameter. It takes a percentage value (1..50, probably something near 5..10 is a good idea) so haproxy adds or removes that many percent to the original interval after each check. My test shows that with 18 backends, 54 servers total and 10000ms/5% it takes about 45m to mix them completely. I decided to use rand/srand pseudo-random number generator. I am aware it is not recommend for a good randomness but a) we do not need a good random generator here b) it is probably the most portable one.
2007-10-14 21:40:01 +00:00
int start_checks();
[MEDIUM] Decrease server health based on http responses / events, version 3 Implement decreasing health based on observing communication between HAProxy and servers. Changes in this version 2: - documentation - close race between a started check and health analysis event - don't force fastinter if it is not set - better names for options - layer4 support Changes in this version 3: - add stats - port to the current 1.4 tree
2009-12-15 21:31:24 +00:00
void health_adjust(struct server *s, short status);
[LICENSE] licensing clarifications
2006-06-15 19:48:13 +00:00
[BIGMOVE] exploded the monolithic haproxy.c file into multiple files. The files are now stored under : - include/haproxy for the generic includes - include/types.h for the structures needed within prototypes - include/proto.h for function prototypes and inline functions - src/*.c for the C files Most include files are now covered by LGPL. A last move still needs to be done to put inline functions under GPL and not LGPL. Version has been set to 1.3.0 in the code but some control still needs to be done before releasing.
2006-06-26 00:48:02 +00:00
#endif /* _PROTO_CHECKS_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/