This package is based on the package 'heartbeat' from project 'server:ha-clustering'.

heartbeat is a sophisticated multinode resource manager for High
Availability clusters.

It can failover arbitrary resources, ranging from IP addresses over NFS
to databases that are tied in via resource scripts. The resources can
have arbitrary dependencies for ordering or placement between them.

heartbeat contains a cluster membership layer, fencing, and local and
clusterwide resource management functionality.

1.2/1.0 based 2-node only configurations are supported in a legacy
mode.