Linux System - Table 12 > Packages - Table 7 > heartbeat-stonith

The STONITH module (a.k.a. STOMITH) provides an extensible interface for remotely powering down a node in the cluster. The idea is quite simple: When the software running on one machine wants to make sure another machine in the cluster is not using a resource, pull the plug on the other machine. It's simple and reliable, albeit admittedly brutal.