View our 2011-2012 Community Derived Roadmap

View our Corosync datasheet which briefly describes the advantages and features of Corosync.

Weavers Needle 2.0 is coming in the first half of 2012! View our published Weaver's Needle 2.0 schedule which describes the milestones and dates we want to hit.

The Corosync Cluster Engine is a Group Communication System with additional features for implementing high availability within applications. The project provides four C Application Programming Interface features:

• A closed process group communication model with virtual synchrony guarantees for creating replicated state machines.
• A simple availability manager that restarts the application process when it has failed.
• A configuration and statistics in-memory database that provide the ability to set, retrieve, and receive change notifications of information.
• A quorum system that notifies applications when quorum is achieved or lost.

Our project is used as a High Availability framework by projects such as Apache Qpid and Pacemaker.

We are always looking for developers or users interested in clustering or participating in our project.

The project is hosted by Fedora Hosted and the The Linux Foundation.

Branch	Version	Release Date	Description
needle	2.0.0 (stable)	10/04/2012	Current stable release of the Corosync Cluster Engine.
flatiron	1.4.3 (stable)	10/04/2012	Supported old stable release of the Corosync Cluster Engine.
flatiron	1.3.5 (stable)	10/04/2012	Unsupported old stable release of the Corosync Cluster Engine.

Our project relies on a good mix of talented fresh engineering experience coupled experienced engineers to make great quality software. We validate our software using a test suite which runs on each commit of the tree. We then analyze the coverage of our test suite using lcov to produce code coverage results to help identify components in need of more test coverage.

Our full coverage reports are available online.

Our automated build and test infrastructure is provided by buildbot, Pacemaker's CTS, and our own Corosync specific CTS test cases.