There could be memory issues.
I had a system which used to periodically reboot.
Eventually found out that after some time, when a part of memory
is accessed, due to the faulty memory chip, the system crashes
and reboots.
Try swapping the memory banks and boot the system. If the faulty chip
falls in the memory range where the system is booting up, then you will
be able to see that the booting fails !
OR
Try to replace the memory cards and try to run the system.
Johan Hendriks wrote:
Hello dear colleagues.
2 days I have strange behaviour on my 7.0-RELEASE-p3 server.
It started to reboot once an hour.
No any suspicious task in crontab, nothing strange in /var/log.
Just silent reboot.
I have no physical access to server - only remote one.
Question is: what could it be?
How to find what send computer to reboot?
Just extra information: I had such stuff before - installworld helped me
for one week,
now it appears again :(
Opened services/sockets are:
nobody proftpd 647 1 tcp4 *:21 *:*
root sshd 845 4 tcp4 *:22 *:*
postfix smtpd 5115 6 tcp4 *:25 *:*
bind named 525 20 udp4 xxx.xxx.xxx.xxx:53 *:*
nobody nginx 643 4 tcp4 *:80 *:*
root couriertcp 769 3 tcp4 *:110 *:*
root couriertcp 789 3 tcp4 *:143 *:*
root rsync 659 5 tcp4 *:873 *:*
root couriertcp 779 3 tcp4 *:993 *:*
root couriertcp 760 3 tcp4 *:995 *:*
root syslogd 461 9 udp4 *:514 *:*
also on local interface (lo0) I have apache, postgrey, spamassasin.
I need some pieces of advice what to do with it and what could it be.
Thanks in advance,
Alexey A. Ukhov
P.S.: I mean hourly: I start top and just wait. last what I see is:
0:59:59 uptime
Try to disable some cronjobs that run hourly.
I think it is something within a cronjob.
Regards,
Johan
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