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HAProxy - Load balancer
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Aurelien DARRAGON 7e64d8720e BUG/MINOR: backend: make be_usable_srv() consistent when stopping 
When a proxy enters the STOPPED state, it will no longer accept new
connections.

However, it doesn't mean that it's completely inactive yet: it will
still be able to handle already pending / keep-alive connections,
thus finishing ongoing work before effectively stopping.

be_usable_srv(), which is used by nbsrv converter and sample fetch,
will return 0 if the proxy is either stopped or disabled.

nbsrv behaves this way since it was originally implemented in b7e7c4720
("MINOR: Add nbsrv sample converter").

(Since then, multiple refactors were performed around this area, but
the current implementation still follows the same logic)

It was found that if nbsrv is used in a proxy section to perform routing
logic, unexpected decisions are being made when nbsrv is used on a proxy
with STOPPED state, since in-flight requests will suffer from nbsrv
returning 0 instead of the current number of usable servers which may
still process existing connections.
For instance, this can happen during process soft-stop, or even when
stopping the proxy from the cli / lua.

To fix this: we now make sure be_usable_srv() always returns the
current number of usable servers, unless the proxy is explicitly
disabled (from the config, not at runtime)

This could be backported up to 2.6.
For older versions, the need for a backport should be evaluated first.

--
Note for 2.4: proxy flags did not exist, it was implemented with fd10ab5e
("MINOR: proxy: Introduce proxy flags to replace disabled bitfield")

For 2.2: STOPPED and DISABLED states were not separated, so we have no
easy way to apply the fix anyway.
2023-03-31 07:45:08 +02:00
.github CI: Reformat matrix.py using black 2023-01-03 16:28:34 +01:00
addons MINOR: stconn: Always report READ/WRITE event on shutr/shutw 2023-02-22 15:59:16 +01:00
admin BUILD: halog: fix missing double-quote at end of help line 2022-11-25 11:11:41 +01:00
dev MEDIUM: ring: make the offset relative to the head/tail instead of absolute 2023-02-24 09:26:30 +01:00
doc MINOR: http_fetch: Add case-insensitive argument for url_param/urlp_val 2023-03-30 14:11:25 +02:00
examples EXAMPLES: remove completely outdated acl-content-sw.cfg 2022-05-30 18:14:24 +02:00
include BUG/MINOR: backend: make be_usable_srv() consistent when stopping 2023-03-31 07:45:08 +02:00
reg-tests REGTESTS : Add test support for case insentitive for url_param 2023-03-30 15:32:14 +02:00
scripts SCRIPTS: run-regtests: add a version check 2022-11-30 18:44:33 +01:00
src BUG/MEDIUM: proxy/sktable: prevent watchdog trigger on soft-stop 2023-03-31 07:05:08 +02:00
tests TESTS: add a unit test for one_among_mask() 2022-06-21 20:29:57 +02:00
.cirrus.yml CI: cirrus-ci: bump FreeBSD image to 13-1 2022-09-09 13:30:17 +02:00
.gitattributes MINOR: Configure the cpp userdiff driver for *.[ch] in .gitattributes 2021-02-22 18:17:57 +01:00
.gitignore CLEANUP: exclude udp-perturb with .gitignore 2022-09-16 15:47:04 +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
CHANGELOG [RELEASE] Released version 2.8-dev6 2023-03-28 13:58:56 +02:00
CONTRIBUTING CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
INSTALL MINOR: version: mention that it's development again 2022-12-01 15:24:10 +01:00
LICENSE LICENSE: add licence exception for OpenSSL 2012-09-07 13:52:26 +02:00
MAINTAINERS CLEANUP: assorted typo fixes in the code and comments 2022-11-30 14:02:36 +01:00
Makefile BUILD: da: extends CFLAGS to support API v3 from 3.1.7 and onwards. 2023-03-28 08:40:34 +02:00
README DOC: create a BRANCHES file to explain the life cycle 2019-06-15 22:00:14 +02:00
SUBVERS BUILD: use format tags in VERDATE and SUBVERS files 2013-12-10 11:22:49 +01:00
VERDATE [RELEASE] Released version 2.8-dev6 2023-03-28 13:58:56 +02:00
VERSION [RELEASE] Released version 2.8-dev6 2023-03-28 13:58:56 +02:00

README 

The HAProxy documentation has been split into a number of different files for
ease of use.

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 :

  - doc/intro.txt for a quick introduction on HAProxy
  - doc/configuration.txt for the configuration's reference manual
  - doc/lua.txt for the Lua's reference manual
  - doc/SPOE.txt for how to use the SPOE engine
  - doc/network-namespaces.txt for how to use network namespaces under Linux
  - doc/management.txt for the management guide
  - doc/regression-testing.txt for how to use the regression testing suite
  - doc/peers.txt for the peers protocol reference
  - doc/coding-style.txt for how to adopt HAProxy's coding style
  - doc/internals for developer-specific documentation (not all up to date)