fence_ipmilan fails with "ERROR: Unable to obtain correct plug status or plug is not available" and the ipmitool fails with "IPMI LAN send command failed"

Solution Verified - Updated -

Issue

  • While the fence_ipmilan fails with "ERROR: Unable to obtain correct plug status or plug is not available", the ipmitool (which is invoked by fence_ipmilan) itself fails with "IPMI LAN send command failed"
  • 'illumino' agent was blocking UDP port 623, used by ipmitool and correspondingly fence_ipmilan

Environment

  • Red Hat Enterprise Linux 6, 7, 8 and 9
  • pacemaker cluster

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