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HAProxy - Load balancer
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Aurelien DARRAGON 85298189bf BUG/MEDIUM: server: server stuck in maintenance after FQDN change 
Pierre Bonnat reported that SRV-based server-template recently stopped
to work properly.

After reviewing the changes, it was found that the regression was caused
by a4d04c6 ("BUG/MINOR: server: make sure the HMAINT state is part of MAINT")

Indeed, HMAINT is not a regular maintenance flag. It was implemented in
b418c122 a4d04c6 ("BUG/MINOR: server: make sure the HMAINT state is part
of MAINT"). This flag is only set (and never removed) when the server FQDN
is changed from its initial config-time value. This can happen with "set
server fqdn" command as well as SRV records updates from the DNS. This
flag should ideally belong to server flags.. but it was stored under
srv_admin enum because cur_admin is properly exported/imported via server
state-file while regular server's flags are not.

Due to a4d04c6, when a server FQDN changes, the server is considered in
maintenance, and since the HMAINT flag is never removed, the server is
stuck in maintenance.

To fix the issue, we partially revert a4d04c6. But this latter commit is
right on one point: HMAINT flag was way too confusing and mixed-up between
regular MAINT flags, thus there's nothing to blame about a4d04c6 as it was
error-prone anyway.. To prevent such kind of bugs from happening again,
let's rename HMAINT to something more explicit (SRV_ADMF_FQDN_CHANGED) and
make it stand out under srv_admin enum so we're not tempted to mix it with
regular maintenance flags anymore.

Since a4d04c6 was set to be backported in all versions, this patch must
be backported there as well.
2024-10-16 14:26:57 +02:00
.github CI: QUIC Interop: use different artifact names for uploading logs 2024-08-26 11:19:41 +02:00
addons BUG/MEDIUM: promex: Wait to have the request before sending the response 2024-09-16 22:56:28 +02:00
admin CLEANUP: assorted typo fixes in the code and comments 2024-09-03 17:49:21 +02:00
dev DEV: flags/applet: decode appctx flags 2024-09-24 18:26:36 +02:00
doc DOC: design-thoughts: add diagrams illustrating an rx win groth 2024-10-12 16:38:36 +02:00
examples MEDIUM: protocol: add MPTCP per address support 2024-08-30 18:53:49 +02:00
include BUG/MEDIUM: server: server stuck in maintenance after FQDN change 2024-10-16 14:26:57 +02:00
reg-tests REGTESTS: fix a reload race in abns_socket.vtc 2024-10-14 19:15:21 +02:00
scripts SCRIPTS: create-release: no more need to skip architecture.txt 2024-07-10 15:38:45 +02:00
src BUG/MEDIUM: server: server stuck in maintenance after FQDN change 2024-10-16 14:26:57 +02:00
tests MAJOR: import: update mt_list to support exponential back-off (try #2) 2024-07-09 16:46:38 +02:00
.cirrus.yml CI: cirrus-ci: bump FreeBSD image to 14-1 2024-10-14 14:28:26 +02:00
.gitattributes MINOR: Configure the cpp userdiff driver for *.[ch] in .gitattributes 2021-02-22 18:17:57 +01:00
.gitignore CONTRIB: Add vi file extensions to .gitignore 2023-06-02 18:14:34 +02:00
.mailmap DOC: update Tim's address in .mailmap 2021-09-16 09:14:14 +02:00
.travis.yml CI: travis-ci: temporarily disable arm64 builds 2021-08-07 07:28:15 +02:00
BRANCHES DOC: fix some spelling issues over multiple files 2021-01-08 14:53:47 +01:00
BSDmakefile BUILD: makefile: commit the tiny FreeBSD makefile stub 2023-05-24 17:17:36 +02:00
CHANGELOG [RELEASE] Released version 3.1-dev9 2024-10-03 17:47:33 +02:00
CONTRIBUTING CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
INSTALL DOC: install: don't reference removed CPU arg 2024-07-16 20:06:06 +02:00
LICENSE LICENSE: add licence exception for OpenSSL 2012-09-07 13:52:26 +02:00
MAINTAINERS MAJOR: spoe: Let the SPOE back into the game 2024-05-22 09:04:38 +02:00
Makefile REORG: buffers: move some of the heavy functions from buf.h to buf.c 2024-10-12 16:29:15 +02:00
README.md DOC: change the link to the FreeBSD CI in README.md 2024-06-03 15:21:29 +02:00
SUBVERS BUILD: use format tags in VERDATE and SUBVERS files 2013-12-10 11:22:49 +01:00
VERDATE [RELEASE] Released version 3.1-dev9 2024-10-03 17:47:33 +02:00
VERSION [RELEASE] Released version 3.1-dev9 2024-10-03 17:47:33 +02:00

README.md

HAProxy

alpine/musl AWS-LC openssl no-deprecated Illumos NetBSD FreeBSD VTest

HAProxy logo

HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.

Installation

The INSTALL file describes how to build HAProxy. A list of packages is also available on the wiki.

Getting help

The discourse and the mailing-list are available for questions or configuration assistance. You can also use the slack or IRC channel. Please don't use the issue tracker for these.

The issue tracker is only for bug reports or feature requests.

Documentation

The HAProxy documentation has been split into a number of different files for ease of use. It is available in text format as well as HTML. The wiki is also meant to replace the old architecture guide.

Please refer to the following files depending on what you're looking for:

  • INSTALL for instructions on how to build and install HAProxy
  • BRANCHES to understand the project's life cycle and what version to use
  • LICENSE for the project's license
  • CONTRIBUTING for the process to follow to submit contributions

The more detailed documentation is located into the doc/ directory:

License

HAProxy is licensed under GPL 2 or any later version, the headers under LGPL 2.1. See the LICENSE file for a more detailed explanation.