On Mon, Feb 22, 2010 at 10:41:04AM +0000, Hadi Motamedi wrote: > My Debian server got hung and when I tried to power cycle > it , I checked its /var/log/messages & /var/log/dmesg with > respect to the time of fault occurance to see what was > really happened . But its 'messages' log does not show > anything recorded for about 30 minutes before its recovery > after power cycling . Can you please let me know where is > I can check to find the root cause of failure ?
Well, whether or not the root cause would be logged depends on a lot of factors, but you might find /var/log/kern.log useful in a lot of situations. See /etc/syslog.conf (or /etc/rsyslog.conf if you are using rsyslog) to see what types of syslog messages get logged to what files.
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