20a82027ce
In a log-format string, using "%[unique-id]" or "%ID" should be equivalent. However, for the first one, the unique ID is generated when the sample fetch function is called. For the alias, it is not true. It that case, the stream's unique ID is generated when the log message is emitted. Otherwise, by default, the unique id is automatically generated at the end of the HTTP request analysis. So, if the alias "%ID" is use in a log-format string anywhere before the end of the request analysis, the evaluation failed and the ID is considered as empty. It is not consistent and in contradiction with the "%ID" documentation. To fix the issue, instead of evaluating the unique ID when the log message is emitted, it is now performed on demand when "%ID" format is evaluated. This patch should fix the issue #3016. It should be backported to all stable versions. It relies on the following commit: * BUG/MINOR: stream: Avoid recursive evaluation for unique-id based on itself
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.