> > Alex de Kruijff <mailto:[EMAIL PROTECTED]> wrote: > > On Thu, Feb 16, 2006 at 01:46:19AM -0600, Mike Loiterman wrote: > >> Afte being up for more than two months, I just noticed that my ver > >> reliable and stable server mysteriously rebooted. I've > had the same > >> hardware and system setup for more than a year and haven't ever > >> experienced anything like this before. I haven't added any new > >> hardware in a very long time. I did upgrade mysql this > morning via > >> portupgrade, however. > >> > >> The system appears to have crashed, as dmesg shows that > the various > >> filesystems weren't unmounted correctly upon reboot, but > aside from > >> that single error, nothing else points to what the problem was. > >> > >> /var/log/messages just shows a user connectig via pop, and > then the > >> next line is the machine booting. > >> > >> We are having a pretty good rainstorm, but nothing else > seems to have > >> lost power and I have several other machines in this space > that did > >> not go down (servers, TVs, XBOX, laptops, etc). > >> > >> The machine seems to have gone down around 11:23 PM, so I checked > >> /etc/cron to see if I had scheduled a job to be run at > that time, but > >> there are no jobs scheduled to be run on or near this time. > >> > >> Where can I begin to look for more clues as to why this > machine seems > >> to have crashed? Where would a kernel core dump be or a > mysql core > >> dump? > > > > You can look at /var/log/messages and find core files with 'find / > > -name \*.core' > > > > The only real explanation was some sort of power fluctuation. > I'll continue to monitor it carefully, but there doesn't seem to be > anyway to definitivly identify the cause, but the machine crashing > under load is looking less and less likely. > > If there is a problem, I suspect it will show up again within the next > week or so, otherwise I'll chalk it up to a random event in the > unverse.
I have had the exact issue with a dual xeon and FreeBSD 5.4 with 4GB RAM. It was working perfectly fine and after a month or two all the sudden the machine rebooted by itself. Well, I shouldn't say all the sudden, one of the circuit breakers blow up taking the server down, but since that time , the server would do sudden reboots. No errors, no dumps, no panics. Just a simple reboot. Then it started becoming more often (it reboots every 15 days, then 10 days, then 5 days). So I began to suspect it is a power issue. We use a remote reboot power switch, so I moved it to another socket, and so far 20 days, no reboots. Not sure if it will go crazy again, but I hope it doesn't. The power supply is 500W so should be more than sufficient for 4 SCSI drives and dual xeons. _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
