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Linux Keeps Crashing

Asked by Pyromanci in Linux, CentOS, Linux Setup

Hello,

I have been trying to troubleshoot a problem for few weeks or so. I have 2 HP DL360 G6 servers running CentOS 5.3 64bit, with heartbeat and drbd running for a fail safe. Heartbeat and DRBD are replicating a 115GB parition where MySQL database files are stored.

Lately I have found that the machines have been rebooting by them selfs. Now i never added a reboot cron job, but i figured there might have been one installed by default. Never could find one.

When I run the last command. I can see where the machine is rebooting.
reboot   system boot  2.6.18-128.el5xe Sat Aug  8 21:49         (2+17:48)

Then when I look at the messages log for that day, there is nothing prior to the that time for a few hours. It's as though the machine crashed and auto rebooted.

For both machines (which are doing the same thing just at different times) I did the following:
- Ran Mem tests on all 3x4GB sticks of RAM (thats 12GB total). The tests did not throw out a error.
- Ran CPU stress test to see if it would hickup. It didn't.
- Ran a HardDrive diagnostic on the 2 drives in the machine. No reported errors or bad sectors
- Looked for a Crash dump couldn't find one.

Honestly I am still pretty new to Linux so I may have looked in the wrong place for a crash dump, or crash dumps capabilities may not even be installed on the machines.

If any of you have any ideas please let me know. I would like to get this problem resolved.

Thanks in advance.
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