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When a connection error is reported, we try to collect as much information as possible on the connection status and the server status is adjusted accordingly. However, the function does nothing if there is no connection error and if the healthcheck is not expired yet. It is a problem when an internal error occurred. It may happen at many places and it is hard to be sure an error is reported on the connection. And in fact, it is already a problem when the multiplexer allocation fails. In that case, the healthcheck is not interrupted as it should be. Concretely, it could only happen when a connection is established. It is hard to predict the effects of this bug. It may be unimportant. But it could probably lead to a crash. To avoid any issue, a SOCKERR status is now set by default when a connection error is reported. There is no reason to report a connection error for nothing. So a healthcheck failure must be reported. There is no "internal error" status. So a socket error is reported. This patch must be backport to all stable versions. |
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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.