Big trouble with cron - high systemload and not working jobs

Phil Meyer pmeyer at themeyerfarm.com
Thu Jan 18 18:01:02 UTC 2007


Götz Reinicke wrote:
> Hi,
>
> we do have some big problems with one of our RHEL3 (running the latest
> updates) Servers.
>
> Since last week the systemload increases within two or three days up to
> 60! and no cronjobs are done anymore, they hang.
>
> The jobs are the usual systemjobs (make-whatis, updatedb for slocate)
> and our backupscript which worked fine for the last two years.
>
> Furthormore some servises hang, e.g. NetAtalk (appletalk fileservises),
> ssh login and local login. For example Samba still works fine.
>
> If I reboot the server, all jobs will be killed and for one or two days
> the load is not above 1 and all servises are fine, crond ass well.
>
> Restarting or killing the crond and the cronjobs fail too.
>
> Any troubleshooting hints? googling didn't helped so far and there are
> no usable logmessages :-(
>
>
> Thanks a lot and best regards
>
> Götz Reinicke

First knee jerk is to look for hardware errors in dmesg and 
/var/log/messages.

Check disk space.

Check swap space.  Are you running munin or another monitoring 
application so you can see what is happening to system resources

Just some thoughts.

Good luck!




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