Occasionally, the CRS Node Manager will fail on our CRS cluster Master node, after which the cluster fails over to the Secondary Node.
In the Event Log, there is Event 7031:
"The Cisco CRS Node Manager service terminated unexpectedly. It has done this 1 time(s). The following corrective action will be taken in 60000 milliseconds: Restart the service."
The service does restart, but the cluster fails over to the Secondary Node.
There are no obvious clues in the MIVR/MADM/MCVD logs. All that occurs is that a new log file is created when the service restarts.
We are running CCM 4.1(3)SR1 with UCCX 4.0(5). There don't appear to be any obvious bugs associated with the CRS Node Manager and CRS 4.0(5).