d655ed5f14
This is a second attempt at fixing issues on 32bits systems which would trigger the following BUG_ON() statement: FATAL: bug condition "sizeof(struct shm_stats_file_object) != 544" matched at src/stats-file.c:825 shm_stats_file_object struct size changed, is is part of the exported API: ensure all precautions were taken (ie: shm_stats_file version change) before adjusting this This is a drop-in replacement for d30b88a6c + 4693ee0ff, as suggested by Willy. Indeed, on supported platforms unsigned int can be assumed to be 4 bytes long, and long can be assumed to be 8 bytes long. As such, the previous attempt was overkill and added unecessary maintenance complexity which could result in bugs if not used properly. Moreover, it would only partially solve the issue, since on little endian vs big endian architectures, the provisioned memory areas (originating from the same shm stats file) could be read differently by the host. Instead we fix the aligments issues, and this alone helps to ensure struct memory consistency on 64 vs 32bits platforms. It was tested on both i386 and i586. last_change and last_sess counters are now stored as unsigned int, as it helped to fix the alignment issues and they were found to be used as 32bits integers anyway. Thanks to Willy for problem analysis and the patch proposal. No backport needed.
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.