On Sat, December 19, 2009 23:47, Jaime Kikpole wrote:
I've been setting up Xymon since I heard about it a couple of days
ago. So far, its fantastic. Unfortunately, after a UPS malfunction
that caused a whole room to restart, I have an inexplicable alarm.
Take a look at this red alarm:
Memory Used Total Percentage
Physical 4294964640M 4084M 4294967231%
Swap 0M 4096M 0%
This is from a FreeBSD 7.x box that has 8GB of physical RAM and 4GB of
swap. According to "top", the physical memory is still about 6.75GB
free.
I've restarted the daemon on the host in question as well as on
Xymon's GUI/web server. I've even tried a bin/bb 127.0.0.1 "drop
HOSTNAME memory" just to see if it would help.
I'm not even sure where to start on this. It was working well for a
day or so before going bad like this. My best guess right now is some
kind of "wrap-around" problem with an integer or something like that
causing bad data in memory.
Suggestions?
I have not touched BSD in about two years, so just a stab with a rusty
fork. My gut feel is same as yours, integer wrap or memory mismap sort of
thing.
How is this host maintained WRT kernel and ports? Any chance the kernel
or related components have been updated since the last previous reboot
and/or since the Xymon build, and that this reboot loaded the changes? If
you're using freebsd-upgrade, could you be in the stage 1 reboot after a
kernel update now, i.e. needing to do another "freebsd-update install" to
complete? I'd look at that, and also at possibly rebuilding/installing
Xymon.