Failover for Lustre nodes

Lustre does not provide the tool set for the system-level components necessary for a complete failover solution (node failure detection, power control, and so on), as this functionality has been available for some time from third party tools. CFS does provide the necessary scripts to interact with these packages, and exposes health information for system monitoring. The recommended choice is the Heartbeat package from linux-ha.org. Lustre will work with any HA software that supports resource (I/O) fencing. The Heartbeat software is responsible for detecting failure of the primary server node and controlling the failover.