0fbf1973ad
This is the first commit in a series to add the support of 4 primary reload use-cases for the new master-worker architecture: 1. Newly forked worker process dies before any reload, due to some errors in the configuration. Newly forked worker process crashes before any reload after sending its "READY" state to master. 2. Newly forked worker process dies due to some errors in the new configuration. This happens after reload, when this new configuration was supplied, so the previous worker process is still here. 3. Newly forked worker process crashes after sending its "READY" state to master due to some bugs. This happens after reload, so the previous worker process is still here. 4. Newly forked worker process has sent its "READY" state to master and starts to receive traffic. This happens after reload, the old worker hasn't terminated yet, as it is waiting on some idle connection and it crashes. Let's rename in this commit mworker_cli_proxy_new_listener() to mworker_cli_master_proxy_new_listener() to outline, that this function creates "master-socket" bind conf and allocates a listener. This listener is attached to the MASTER proxy and it's bound to the ipc_fd[0] of the sockpair, inherited in master and in worker processes (master CLI sockpair).
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.