[CentOS] Investigate the root cause of server reboot

[Lanny Marcus]

On Sun, Sep 6, 2009 at 12:01 PM, Les Mikesell<lesmikesell at gmail.com> wrote:
> Justin Yao wrote:
>> My CentOS will reboot every several days. There's nothing in
>> /var/log/messages. I want to find out why it reboots automatically. Is
>> there any log I can look at? Or any suggestions to monitor the server
>> activity?
>>
>
> Odds are that it is hardware related (power supply, RAM, etc.) and crashing
> before it can log anything.

+1      unless it is happening at the same time when a cron job is
running, as Scott mentioned.  Inspect the fans on the PSU and CPU and
make sure they are running.   Be sure it has good ventilation and is
clean inside.