What can I do to determine what caused the token to be lost and/or a node to be fenced in my RHEL 5 High Availability cluster?

Solution Verified - Updated -

Issue

  • Why was my node fenced?
  • One of the cluster node rebooted after totem token loss, please let us know the reason for token loss
  • A node was fenced when a token was lost on the surviving node.
  Apr 19 17:29:26 node1 openais[4997]: [TOTEM] The token was lost in the OPERATIONAL state.
  • How can I determine what caused my cluster to report a token was lost, and subsequently fence a cluster node?
  • How do you recreate token lost events in a test environment?
  • We need the instructions to get a token lost event to occur.
  • What are different ways to trigger token lost events in cluster environment?

Environment

  • Red Hat Enterprise Linux 5 with the High Availability Add On

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