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pacemaker-based (reads and writes cluster configuration and status)
pacemakerd (launches and monitors all other daemons)
Pacemaker internals
pacemaker-execd(executes resource agents)
pacemaker-fenced(executes fencing agents)
pacemaker-attrd(manages node attributes)
pacemaker-schedulerd(determines all actions needed)
ClusterLabs
pacemaker-controld(coordinates all actions)