Hello all,
I'm running Nagios 3.0.6 compiled from unmodified source on CentOS 5.2
x86_64. I noticed that notifications stopped early this morning, and
the logs said Nagios caught SIGSEGV, and it was shutting down. Nagios
doesn't appear to go all the way down, though. All the CGIs still work,
but no checks are being performed. There is a lock file, and nagios.cmd
still exists. The first one I saw happened after Nagios had been
running fine for a while, but the same thing happens if I issue a
killall -SIGSEGV naigios command, defunct processes and all. This is
what I got after I did the killall, then a service nagios start, then
another killall.
# ps -fC nagios
UIDPID PPID C STIME TTY TIME CMD
nagios1469 1 0 10:47 ?00:00:00
/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios1470 1469 0 10:47 ?00:00:00 [nagios] defunct
nagios1918 1 6 10:51 ?00:02:55
/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios 16350 1918 0 11:25 ?00:00:00
/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios 16351 16350 0 11:25 ?00:00:00 [nagios] defunct
Thanks to Paul Weaver's suggestion earlier this month, I've got a
failover Nagios server running. Once a minute, it checks the primary
server. I didn't set the conditions for failing over correctly, so it
didn't take over in this case, though it sometimes does for a moment
when I restart the primary Nagios after I've updated its object
configuration files. The output of its check_nagios command looks like
this after the primary Nagios gets a SIGSEGV:
# ./check_by_ssh -H primaryhostname
--command='/usr/local/nagios/libexec/check_nagios
--filename=/usr/local/nagios/var/status.dat --expires=60
--command=nagios'
NAGIOS OK: 3 processes, status log updated 228 seconds ago
When I fixed the expiration, it gave me a warning state and I could've
failed over on that. However, the way I did things, the failover server
thought everything was all right. So, that's my problem to fix, but
shouldn't Nagios shut all the way down as well?
Thanks!
-Chris
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