Hi John -
Yes, at my former workplace, we had a couple of different instances
where we experienced severe crashing problems on G4-based machines.
Prior to using a G4 Xserve, we were using a dual-G4 tower as our MySQL
and Intranet server, and as we ramped up MySQL usage, the hard crashing
got to where it was nearly every morning. Finally traced it to our
backup process, Retrospect, accessing files while MySQL was trying to
access them. Specifically excluding MySQL's data directory from your
backup process is a must. Excluding temp and log dirs is also probably
a good idea. We were already dumping out data out to another directory
daily, but didn't realize that the simultaneous access would be such a
problem. This was with MySQL 3.23 and later 4.0, and OS 10.1 through
10.2 I think.
When we moved to a G4 Xserve (serving MySQL and our Intranet), we again
had horrible crashing problems. Weird, like none I'd ever seen, where
the OS basically just entered a slow spiral of death that led to it
either rebooting on its own or us noticing the problem first and
hard-resetting it. Apps would stop opening, cli processes would no
longer run, running apps would slowly stop responding. Traced it to a
pair of Kingston RAM modules. Once those were out, the machine righted
itself and I believe continues to serve data (though no longer MySQL) to
this day. Weird I know but I swear that was it. This was with MySQL
4.0 and (I think) OS 10.2 through 10.3.
HTH,
Dan
John May wrote:
I've got an xserve running 10.3.9 and MySQL 4.0.27-max that is
restarting itself every 2-3 days. It appears that it is due to a kernel
panic, though I don't have direct access to the machine (colocated) to
verify when it occurs.
There are no crash.logs from MySQL, and watchdog and system.logs show
nothing. I have culled the following panic.log - can anyone tell if
MySQL is the cause of such?
Has anyone seen MySQL 4 crash on an Xserve (G4 specifically)? I have
tried two totally different servers, and the problems continue.
- John
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