Fence Agents for Red Hat Cluster - Sentry Switch CDU agent

 Red Hat Fence Agents is a collection of scripts to handle remote power
 management for several devices. They allow failed or unreachable nodes to be
 forcibly restarted and removed from the cluster.
 .
 fence_cdu is an I/O Fencing agent which can be used with the Sentry Switch
 CDU. It logs into the device via telnet and power's on/off an outlet.