[CentOS] how to debug random server reboots

Scott Silva ssilva at sgvwater.com
Tue Jun 2 21:38:09 UTC 2009

on 6-2-2009 2:30 PM Rudi Ahlers spake the following:
> Hi all,
> One of our CentOS 5.3 randomly reboots, at different times of the day,
> and I can't see why it's doing it.
> I have looked through the logs, but don't see any thing in there that
> shows me why it has rebooted. How can I debug this?
> Here's a snipped from the log, around the time of the reboot:
Random reboots can happen fast enough that nothing gets into the logs. You can
try setting up a console and have the system post there. It sometimes catches

But until then I would do the obvious... Make sure the system is clean and not
overheating from "dust bunnies" filling up the chassis.

Remove and re-seat all cards and ram. Make sure all fans are working. Run
memtest overnight if possible. Look back to when the reboots started and see
if something was added or upgraded.

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