5d021c028e
In 3.2, a new server keyword "check-reuse-pool" has been introduced. It allows to reuse a connection for a new check, instead of always initializing a new one. This is only performed if the check does not rely on specific connection parameters differing from the server. This patch further restricts reuse for checks only when an HTTP ruleset is used at the backend level. Indeed, reusing a connection outside of HTTP is an undefined behavior. The impact of this bug is unknown and depends on the proxy/server configuration. In the case of an HTTP backend with non-HTTP checks, check-reuse-pool would probably cause a drop in reuse rate. Along this change, implement a new diagnostic warning on servers to report that check-reuse-pool cannot apply due to an incompatible check type. This must be backported up to 3.2.
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.