Package request: Pacemaker, Corosync, PCS
Pacemaker is an Open Source, High Availability resource manager suitable
for both small and large clusters.
http://clusterlabs.org/
The Corosync Cluster Engine is a Group Communication System with
additional features for implementing high availability within
applications.
http://corosync.github.io/corosync/
PCS - Pacemaker/Corosync configuration system
https://github.com/feist/pcs
(from redmine: issue id 4018, created on 2015-03-24)