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Where Do I get Logs for tracing the sypmtoms for last reboot.

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Operating Systems Linux Where Do I get Logs for tracing the sypmtoms for last reboot.
# 1  
Old 02-04-2010
Where Do I get Logs for tracing the sypmtoms for last reboot.
Hi,

I have got 4 Sun Servers with Linux OS and are in Cluster.
This setup worked fine for about 2 Weeks. But today 3 servers rebooted automatically.
I got this log

Feb 4 13:59:30 test1 syslogd 1.4.1: restart.

Was not able to trace out the pre reboot logs. Where Do i get these logs for tracing the cause of same.

There is no problem with power supply. I have redundant Power Supply.
Kindly Suggest.
# 2  
Old 02-04-2010
Quote:
Originally Posted by SiddhV
Was not able to trace out the pre reboot logs. Where Do i get these logs for tracing the cause of same.
There's no logs at all before the reboot? Or just nothing pertinent to the cause of the reboot? What's in /var/log/messages? Did they all reboot simultaneously?

If it was just one, I'd suspect a kernel panic. But three, that smacks of intention to me. If there's nothing in the logs before the reboot for all three of them, that seems even more intentional, these things don't go away unless something clears them...
# 3  
Old 02-04-2010
Quote:
Originally Posted by SiddhV
Hi,

I have got 4 Sun Servers with Linux OS and are in Cluster.
This setup worked fine for about 2 Weeks. But today 3 servers rebooted automatically.
I got this log

Feb 4 13:59:30 test1 syslogd 1.4.1: restart.

Was not able to trace out the pre reboot logs. Where Do i get these logs for tracing the cause of same.

There is no problem with power supply. I have redundant Power Supply.
Kindly Suggest.
Perhaps they have been log-rotated. Try /var/log/message.1(.gz) or so.

HTH,
Loïc.
# 4  
Old 02-05-2010
Thanks for replying...

No... The logs havent been Archieved.
# 5  
Old 02-05-2010
Are there any crash dumps under /var/crash/hostname/ ? If so, you could try to read the internal messagebuffer from the dump, like:

Code:
adb -k unix.0 vmcore.0
   $<msgbuf

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