390df282c1
When "peers" keyword is followed by more than one argument and it's the first "peers" section in the config, cfg_parse_peers() detects it and exits with "ERR_ALERT|ERR_FATAL" err_code. So, upper layer parser, parse_cfg(), continues and parses the next keyword "peer" and then he tries to check the global cfg_peers, which should contain "my_cluster". The global cfg_peers is still NULL, because after alerting a user in alertif_too_many_args, cfg_parse_peers() exited. peers my_cluster __some_wrong_data__ peer haproxy1 1.1.1.1 1000 In order to fix this, let's add ERR_ABORT, if "peers" keyword is followed by more than one argument. Like this parse_cfg() will stops immediately and terminates haproxy with "too many args for peers my_cluster..." alert message. It's more reliable, than add checks "if (cfg_peers !=NULL)" in "peer" subparser, as we may have many "peers" sections. peers my_another_cluster peer haproxy1 1.1.1.2 1000 peers my_cluster __some_wrong_data__ peer haproxy1 1.1.1.1 1000 In addition, for the example above, parse_cfg() will parse all configuration until the end and only then terminates haproxy with the alert "too many args...". Peer haproxy1 will be wrongly associated with my_another_cluster. This fixes the issue #2872. This should be backported in all stable versions.
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.