A recent update to CentOS 5.9 has broken my cluster’s ability to fence nodes. I have two Dell’s which are both fenced via their DRAC6 cards. The current configuration in cluster.conf for the fencing devices is:
After the updates, when one of the two systems comes online and starts the cman service, it will startup fencing. At that point it contacts the other node and reboots it repeatedly, never allowing the system to come back online. If I disable the cman service and renable it after both systems come back online, when cman starts up, it reboots the other and the process starts over again.
Fencing with DRAC devices is not terribly well-documented, so I immagine there was something in the update that changed the way this worked. I
originally used system-config-cluster to created the configuration file, but that had to tweak it adding the fence_drac5 agent manually because the configuration tool didn’t support it. I also tried recreating the cluster with conga, via luci and ricci, but no success there either.
Is anyone out there doing clustering with Dells and DRAC6 cards under CentOS 5.9? Or under CentOS 6 for that matter… I’m willing to update if it fixes this.
thanks in advance,