How can I diagnose cluster fencing failing with "agent '<agent>' reports: Unable to connect/login to fencing device" in RHEL 5 or 6

Solution Unverified - Updated -

Issue

  • Fencing fails with "Unable to connect/login to fencing device" either in /var/log/messages or on the command line
Jun 22 15:08:33 node01 fenced[18278]: agent "fence_wti" reports: Unable to connect/login to fencing device
Jun 22 15:08:33 node01 fenced[18278]: fence "node02" failed

Environment

  • Red Hat Enterprise Linux (RHEL) 5 or 6
  • Applicable to a number of different fence agents

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