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08-09-2012 03:58 AM
08-09-2012 03:58 AM
Plaaned shut down or panic
If server suddenly reboots how to check whether it is planned or panic?
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08-09-2012 04:18 AM
08-09-2012 04:18 AM
Re: Plaaned shut down or panic
Hi:
Verify /etc/shutdownlog file.
rgs,
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08-09-2012 11:12 AM
08-09-2012 11:12 AM
Re: Planned shut down or panic
>If server suddenly reboots how to check whether it is planned or panic?
If suddenly, it is a panic. (Unless you don't remember you just did it. ;-)
Any dumps in /var/adm/crash/?
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08-10-2012 12:17 AM
08-10-2012 12:17 AM
Re: Planned shut down or panic
Hi,
Please tell me what ara the possible steps to follow...I am blank how to start and what file to check and what output will i get if i check those file...
Thank yo..
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08-10-2012 01:31 AM
08-10-2012 01:31 AM
Re: Planned shut down or panic
As rariasn said:
check /etc/shutdownlog for recent shutdowns.
Check /var/adm/crash/ for recent crashes.
You can use uptime(1) to see when you system came back up.
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08-10-2012 02:24 AM
08-10-2012 02:24 AM
Re: Planned shut down or panic
The /etc/shutdownlog will list the times when a controlled shutdown was done, and whether it was a halt or a reboot. If you find an entry in the shutdownlog with a timestamp close to the reboot time you're investigating, someone definitely commanded the server to shut down.
If there is no matching entry in the shutdownlog, it might be an OS panic, a severe hardware issue or a power blackout: check /var/adm/crash to see if there is a crashdump. If there is no crashdump, check the Management Processor log, if the server has one.
Note that some hardware management processors cannot always log a "power failed" message in a total power blackout situation... because when it happens, there will be no power for writing the log. Instead, they will log a "power was restored" message as soon as there is power again: if you see a "power was restored" message without a corresponding "power failure" message before it, you will know that the server completely lost all power. If only some power supply modules in a multi-PSU server lose power, the management processor can usually log the failure and identify the power supply that had the problem.