Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

My CentOS 5.7 server randomly restarts. I've found the following in /var/log/messages:

Jan 24 01:54:53 m38501 dhcpd: DHCPINFORM from via eth0
Jan 24 01:54:53 m38501 dhcpd: DHCPACK to (00:13:3e:4c:56:87) via eth0
Jan 24 01:54:53 m38501 kernel: r8169: peth0: link up
Jan 24 01:55:24 m38501 last message repeated 53 times
Jan 24 01:56:59 m38501 syslogd 1.4.1: restart.

And then it just reboots the server. It's running Xen (2.6.18-274.12.1.el5xen). Anyone knows what can cause this?

share|improve this question
up vote 1 down vote accepted

Check your hardware; random restarts could be cause by motherboard (there can be destended capacitor), RAM modules (often it cause a kernel panic) or by power supply.

share|improve this answer
Thanks, I have informed my hosting provider and they agree it could be a hardware failure. They will put my drives into another server tomorrow. Let's see if that solves the problem. – Devator Jan 24 '12 at 20:44
It did solve the problem. It was a hardware failure. – Devator Mar 9 '12 at 8:18

Maybe that's time to upgrade to something new. 2.6.18 is very old. Why don't you upgrade to Xen 4.x, and the Debian backported kernel 3.1?

share|improve this answer
It's a kernel from 2010. I won't call it very old. Xen 3.4.3 is also a very stable release. – Devator Jan 24 '12 at 19:45
kernel 2.6.18 is stable kernel from RHEL, it shoudln't be a problem – stderr Jan 24 '12 at 20:07

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.