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The STONITH daemon is a cluster-wide abstraction for STONITH topology.

That is, an individual STONITH device can only reset certain machines in the cluster - perhaps one, or perhaps all. The STONITH daemon hides these details of the STONITH device topology and provides a single uniform interface to the STONITH devices in the cluster.

This makes for a uniform interface, and also abstracts it to a high enough level that entities other than the CRM can use it, if they wish. In other words - it's a reusable component. This is to allow it to be used directly by GFS (global file system), if that proves desirable.

See Also

STONITH, ResourceFencing, SmartFencingDaemonProposal, FencingSubsystemRequirements, LocalResourceManager/FencingOperations, LocalResourceManager/StonithAgents