slackbuilds_ponce/system/fence-agents

fence-agents (Cluster Fence Agents)

Fence agents were developed as device "drivers" which are able to
prevent computers from destroying data on shared storage. Their aim is
to isolate a corrupted computer, using one of three methods: Power /
Network / Configuration.

You might also want to install cluster-glue, heartbeat, resource-agents,
fence-agents.