I didn't see any relevant log on the host. We've depooled the host from all mediawiki sections: https://gerrit.wikimedia.org/r/#/c/429642/
Here the relevant hardware logs from racadm getraclog.
-------------------------------------------------------------------------------- SeqNumber = 167 Message ID = PWR2262 Category = Audit AgentID = iDRAC Severity = Warning Timestamp = 2018-04-29 00:13:17 Message = The Intel Management Engine has reported an internal system error. Message Arg 1 = Error Code = [0x03] FQDD = iDRAC.Embedded.1 -------------------------------------------------------------------------------- SeqNumber = 168 Message ID = RAC0703 Category = Audit AgentID = RACLOG Severity = Information Timestamp = 2018-04-29 00:13:18 Message = Requested system hardreset. FQDD = iDRAC.Embedded.1 --------------------------------------------------------------------------------