Fence Agents for Red Hat Cluster - Raritan Dominion PX 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_raritan is an I/O Fencing agent which can be used with the Raritan
 DPXS12-20 Power Distribution Unit. It logs into device via telnet and reboots a
 specified outlet. Lengthy telnet connections should be avoided while a GFS
 cluster is running because the connection will block any necessary fencing
 actions.