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Willy Tarreau 0db8b6034d BUG/MINOR: listener: always assign distinct IDs to shards 
When sharded listeners were introdcued in 2.5 with commit 6dfbef4145
("MEDIUM: listener: add the "shards" bind keyword"), a point was
overlooked regarding how IDs are assigned to listeners: they are just
duplicated! This means that if a "option socket-stats" is set and a
shard is configured, or multiple thread groups are enabled, then a stats
dump will produce several lines with exactly the same socket name and ID.

This patch tries to address this by trying to assign consecutive numbers
to these sockets. The usual algo is maintained, but with a preference for
the next number in a shard. This will help users reserve ranges for each
socket, for example by using multiples of 100 or 1000 on each bind line,
leaving enough room for all shards to be assigned.

The mechanism however is quite tricky, because the configured listener
currently ends up being the last one of the shard. This helps insert them
before the current position without having to revisit them. But here it
causes a difficulty which is that we'd like to restart from the current
ID and assign new ones on top of it. What is done is that the number is
passed between shards and the current one is cleared (and removed from
the tree) so that we instead insert the new one. It's tricky because of
the situation which depends whether it's the listener that was already
assigned on the bind line or not. But overall, always removing the entry,
always adding the new one when the ID is not zero, and passing them from
the reference to the next one does the trick.

This may be backported to all versions till 2.6.
2024-04-09 08:57:02 +02:00
.github CI: extend Fedora Rawhide, add m32 mode 2024-04-04 08:59:34 +02:00
addons CLEANUP: assorted typo fixes in the code and comments 2024-03-05 11:50:34 +01:00
admin BUILD: address a few remaining calloc(size, n) cases 2024-02-10 11:37:27 +01:00
dev MEDIUM: ring: use the topmost bit of the tail as a lock 2024-03-25 17:34:19 +00:00
doc [RELEASE] Released version 3.0-dev7 2024-04-06 17:02:07 +02:00
examples CLEANUP: assorted typo fixes in the code and comments 2023-11-23 16:23:14 +01:00
include CLEANUP: global: remove LSTCHK_CAP_BIND 2024-04-05 18:01:54 +02:00
reg-tests REGTESTS: ssl: disable ssl/ocsp_auto_update.vtc 2024-04-02 14:20:39 +02:00
scripts CI: ssl: add yet another OpenSSL download fallback 2024-02-07 11:05:45 +01:00
src BUG/MINOR: listener: always assign distinct IDs to shards 2024-04-09 08:57:02 +02:00
tests Revert "MAJOR: import: update mt_list to support exponential back-off" 2023-09-15 17:13:43 +02:00
.cirrus.yml CI: cirrus-ci: display gdb bt if any 2023-09-22 08:28:30 +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 3.0-dev7 2024-04-06 17:02:07 +02:00
CONTRIBUTING CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
INSTALL DOC: install: recommend pcre2 2024-02-08 08:55:57 +01:00
LICENSE LICENSE: add licence exception for OpenSSL 2012-09-07 13:52:26 +02:00
MAINTAINERS MAJOR: spoe: Deprecate the SPOE filter 2024-03-15 11:29:39 +01:00
Makefile MINOR: guid: introduce global UID module 2024-04-05 15:40:42 +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 3.0-dev7 2024-04-06 17:02:07 +02:00
VERSION [RELEASE] Released version 3.0-dev7 2024-04-06 17:02:07 +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)