[Check_mk (english)] Incorrect Offset Warnings from System Time Service

Dye, Rob rdye at SCIRES.COM
Tue Feb 10 17:53:35 CET 2015

I'm new to Check_MK and I'm trying to troubleshoot an issue with a false warning state.  Check_mk is reporting something similar to:  "WARN - Offset is -64 sec".  It seems to only happen on windows clients (we have 8 windows systems and 30 linux systems) but it varies from day to day which machine(s) are showing this alert.  In reality, the timestamps only vary by a second or two across the windows machines, but check_mk reports up to 70 seconds offset.  The check_mk/OMD server is about 20 seconds offset from the windows servers.

If I ssh into the server and run a "nc <serverIP> 6556" I can see the <<<systemtime>>> output at the bottom.  The time it reports is correct, so I believe the issue is on the server rather than the client end.

What is check_mk doing with this systemtime information to result in the warning that the time is 60-70 seconds offset and how can I fix it?

Thanks for your help!

Rob D


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