CUCM server rebooted last night at 2:51 am. I didn't see any core dump generated nor were there anything in the syslog. Syslog entries from 1:05 am to 9:30 am were not there. I tried to download "Collect Crash Dump" files for the timerange, those were unavailable.
Not sure what to look at next, if anyone has dealt with a similar issue or have any troubleshooting steps please let me know.
It could be due to a power outage that might have affected the server or it could be due to cpu / memory usage spike that lead to a restart. Generally a cpu / memory spike would cause a core dump or you would at least get something in the RisDC Perfmon logs for that duration. You can check for any unexpected shutdown scenario using the process listed in the following doc
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Please find the attached HTML document, download and open it on your PC.
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CUCM Database Replication is an area in which Cisco customers and
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