fence_ipmilan intermittently fails, and debug output shows "no matching cipher suite"

Solution In Progress - Updated -

Issue

  • A fence_ipmilan stonith device typically works but intermittently fails its monitor operation. With debugging enabled (debug=<filename> set on the stonith device), messages like the following are produced (errors starting at 03:33:25).
2020-06-11 03:32:25,496 INFO: Executing: /usr/bin/ipmitool -I lanplus -H node1 -p 623 -U ipmiuser -P [set] -L ADMINISTRATOR -y <hex_key> chassis power status
2020-06-11 03:32:25,530 DEBUG: 0 Chassis Power is on
2020-06-11 03:33:25,579 INFO: Executing: /usr/bin/ipmitool -I lanplus -H node1 -p 623 -U ipmiuser -P [set] -L ADMINISTRATOR -y <hex_key> chassis power status
2020-06-11 03:33:25,589 DEBUG: 0  Error in open session response message : no matching cipher suite
Error: Unable to establish IPMI v2 / RMCP+ session
2020-06-11 03:33:25,589 ERROR: Failed: Unable to obtain correct plug status or plug is not available
2020-06-11 03:33:26,634 INFO: Executing: /usr/bin/ipmitool -I lanplus -H node1 -p 623 -U ipmiuser -P [set] -L ADMINISTRATOR -y <hex_key> chassis power status
2020-06-11 03:33:26,643 DEBUG: 0  Error in open session response message : no matching cipher suite
Error: Unable to establish IPMI v2 / RMCP+ session
2020-06-11 03:33:26,644 ERROR: Failed: Unable to obtain correct plug status or plug is not available

Environment

  • Red Hat Enterprise Linux 7 (with the High Availability Add-on)
  • fence_ipmilan

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