IPMI Fencing for ZCS Cluster

[2myhre]

I recently completed the setup of a single cluster node install for ZCS. It works great if a service fails. Now the issue is loss of network connectivity. If I unplug the nic on node mail1 it immediately tries to fence node mail2. Node mail2 does the same and neither can successfully fence the other causing the process to stop.

Is there a way out of this lovely little mess.

[pbruna]

maybe with redundancy at nic level? Bonding?

[Klug]

Originally Posted by 2myhre

Now the issue is loss of network connectivity. If I unplug the nic on node mail1 it immediately tries to fence node mail2. Node mail2 does the same and neither can successfully fence the other causing the process to stop.

AFAIK, this is normal.

If node2 can not "see" node1 anymore, it will migrated the services to itself and shutdown node1. And it's obviously the same the other way round.

As pbruna suggested, if you want to avoid loss of network connectivity between the nodes, you need to remove the SPOFs between the node... That means at least two NICs per nodes, with two network switches (on two different power supplies), etc etc etc