Projects / Linux-HA


Heartbeat is a full-function high-availability system for Linux and other POSIX-like OSes. It monitors services and restarts them on errors. When managing a cluster (more than 1 machine), it will also monitor the members of the cluster and begin recovery of lost services in less than a second. It runs over serial ports and UDP broadcast/multicast, as well as OpenAIS multicast. It is easily adapted to different interconnect media and protocols. When used in a cluster, it can operate using shared disks, data replication, or no data sharing. Versions starting with 2.0 are comparable to any commercial HA package, providing resource monitoring, larger clusters, and detailed dependency information.

Operating Systems

Recent releases

  •  28 Apr 2006 20:57

    Release Notes: This release has significant bugfixes and enhancements, making it a worthwhile upgrade for anyone running R2 CRM-style configurations, or who would like to. An OCF RA for Xen guests and Chinese GUI support have been added. ipfail has been replaced and generalized (limited testing). Master/slave testing and fixes. Significant cibadmin fixes.

    •  17 Feb 2006 08:40

      Release Notes: GUI management tools were added to simplify the configuration work. Support for monitoring by Common Information Model (CIM) agents was also added. The crm_verify tool was created for checking configuration validity. Support for time and phase-of-the-moon based constraints was added. Many improvements to the handling of resource groups were done. DC order was changed to shutdown after every other node. Several memory leaks and CPU consuming bugs were fixed.

      •  24 Sep 2005 07:33

        Release Notes: A bug in the ping directive was fixed. A check was added to BasicSanityCheck to check the ping and ping_group directives. cl_status nodestatus was fixed to return success if a node has the status "ping". A memory leak in the CRM's LRM interface code was fixed along with the code that determines which version of the CRM becomes the DC when basic CIB schema versions differ. It now prefers the older version to be DC instead of the newer version.

        •  23 Sep 2005 21:49

          Release Notes: This release adds date and time-based constraints. It improves the efficiency of netstring encoding. It has new CLI tools for updating the cluster configuration, and cloned resource notification enhancements. A dozen or so minor bugs have been fixed.

          •  30 Jul 2005 08:22

            Release Notes: This release provides support for monitoring of resources (services) and support for larger clusters that has been tested with 16 nodes. Simple clusters are simple to create, and more complex clusters can take advantage of rule-based resource placement methods to ensure that the cluster does exactly what is desired when failures occur. This release has undergone exhaustive automated testing compiles with zero warnings, and passes a static analyzer with no complaints.


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