2bdf5a7937
The current ACME scheduler suffers from problems due to the way the tasks are stored: - MT_LIST are not scalables when having a lot of ACME tasks and having to look for a specific one. - the acme_task pointer was stored in the ckch_store in order to not passing through the whole list. But a ckch_store can be updated and the pointer lost in the previous one. - when a task fails, the ptr in the ckch_store was not removed because we only work with a copy of the original ckch_store, it would need to lock the ckchs_tree and remove this pointer. This patch fixes the issues by removing the MT_LIST-based architecture, and replacing it by a simple ebmbtree + rwlock design. The pointer to the task is not stored anymore in the ckch_store, but instead it is stored in the acme_tasks tree. Finding a task is done by doing a lookup on this tree with a RDLOCK. Instead of checking if store->acme_task is not NULL, a lookup is also done. This allow to remove the stuck "acme_task" pointer in the store, which was preventing to restart an acme task when the previous failed for this specific certificate. Must be backported in 3.2.
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.