c7abe7778e
As reported by Nick Ramirez in GH #2891, it is currently not possible to use log-profile without a log-format set on the proxy. This is due to historical reason, because all log sending functions avoid trying to send a log with empty message. But now with log-profile which can override log-format, it is possible that some loggers may actually end up generating a valid log message that should be sent! Yet from the upper logging functions we don't know about that because loggers are evaluated in lower API functions. Thus, to avoid skipping potentially valid messages (thanks to log-profile overrides), in this patch we postpone the decision to send or not empty log messages in lower log API layer, ie: _process_send_log_final(), once the log-profile settings were evaluated for a given logger. A known side-effect of this change is that fe->log_count statistic may be increased even if no log message is sent because the message was empty and even the log-profile didn't help to produce a non empty log message. But since configurations lacking proxy log-format are not supposed to be used without log-profile (+ log steps combination) anyway it shouldn't be an issue.
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.