5c15ba5eff
As mentioned in [1], the "dispatch" directive from haproxy 1.0 has long outlived its original purpose and still suffers from a number of technical limitations (no checks, no SSL, no idle connes etc) and still hinders some internal evolutions. It's now time to mark it as deprecated, and to remove it in 3.5 [2]. It was already recommended against in the documentation but remained popular in raw TCP environments for being shorter to write. The directive will now cause a warning to be emitted, suggesting an alternate method involving "server". The warning can be shut using "expose-deprecated-directives". The rare configs from 1.0 where "dispatch" is combined with sticky servers using cookies will just need to set these servers's weights to zero to prevent them from being selected by the load balancing algorithm. All of this is explained in the doc with examples. Two reg tests were using this method, one purposely for this directive, which now has expose-deprecated-directives, and another one to test the behavior of idle connections, which was updated to use "server" and extended to test both "http-reuse never" and "http-reuse always". [1] https://github.com/orgs/haproxy/discussions/2921 [2] https://github.com/haproxy/wiki/wiki/Breaking-changes
HAProxy
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:
- 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)
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.