Random reboots

Jordi Espasa Clofent jordi.espasa at opengea.org
Sun Dec 16 11:01:48 PST 2007

Hi all,

I've a couple of this machines [1] in a prduction environment. I suffer 
random reboots without any clear reason.

A possible power failure it's a discarded point: I use a switched rack 
PDU and anything is showed by the logs. Moreover, I'm talking about 
datacenter environment, so there're a lot of redundant UPSs too.

So, I tend to think it should be a hard/soft conflict, but when I check 
the dmseg and others logs after a random reboot, all appears completely 
normal. I know that a kernel dump will be great help, but this boxes has 
a 4/8GB of RAM, and their /swap is lesser.

Moreover, I have a lot of services in the boxes: http/https (Apache), 
SMTP (Postfix), POP/IMAP (Dovecot) and database (MySQL). This point 
makes too complex to determines what is the origin of the random 
reboots. I have to say that the strange reboots seems that hasn't direct 
relation with the system load: they occurs randomly in stress or calm 

I've looked at ACPI issues, but, accordint to this helpful info [2], all 
seems ok.

¿Some idea?



Jordi Espasa Clofent

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