The two main components of the software we use in this chapter are Corosync and Pacemaker. Each of these comprises, or depends on, several other elements and prerequisites. For now, we'll simply refer to the entire suite as Pacemaker, as it comprises the bulk of how we will control the failover system.
This recipe should be relatively short, as we will only discuss the installation of Corosync and Pacemaker, not their configuration.
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