[CentOS] System crash -- no clue why

[m.roth at 5-cent.us]

Dale Dellutri wrote:
> On Tue, Jul 10, 2012 at 10:36 AM, Michael Eager <eager at eagerm.com> wrote:
>> Hi --
>>
>> My CentOS 5.8 server crashed, leaving no clue why.  The
>> last entry in /var/log/messages is a dhcpd notice around
>> 4:00am, followed by the restart message when I rebooted.
>> The only clue that I have is that the fan was running full
>> speed when I restarted it.  The fan slowed to normal speed.
>>
>> Any ideas what I can do to find out the cause?
>
> Power failure?

Could you give more details? I've got servers that become completely
unresponsive. I plug in a keyboard and monitor, and zip - the screen's
live, but nothing works, and I have to power cycle. Is it something like
that, or did it crash by itself?

      mark