Heartbeat is a common cluster infrastructure and cluster manager used to manage DRBD resources. Pacemaker is the successor of the cluster manager part of Heartbeat. See also: → external resources.

If the most recent heartbeat or pacemaker package is not yet available from your favorite distributor,  you may have a look at the → install page on pacemaker's website.

Redhat users may be lucky enough to find more or less recent yum-able packages in the CentOS → extra repository.