Nagios is generated and interrupted by SIGSEGV

Troubleshooting
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1

CMK version: 2.2.0p6
OS version: Ubuntu 22.04.2 LTS
Error message: [1707351642] Caught SIGSEGV, shutting down…

Hello
I checked that the Check-MK site is not working and checked with omd status cmk and confirmed that nagios is down.

root@edabed911ba6:/# omd status cmk
agent-receiver: running
mkeventd:       running
rrdcached:      running
npcd:           running
nagios:         stopped
apache:         running
redis:          running
crontab:        running
-----------------------
Overall state:  partially running

So I checked the log of nagios and confirmed that it was interrupted because of that error.

[1707351642] Caught SIGSEGV, shutting down..

I’ve also checked the forum, but most of them don’t answer, so it’s a difficult problem to solve.

Has anyone worked on this issue?

2

There is not a single source for the SIGSEGV. It depends on your setup.
Mostly it was a rouge plugin script (classic Nagios check) or some strange data returned from a check to the core.
You can only increase the log level for the Nagios core.
But pay attention these logs can be very huge.

1 Like
3

Are you saying it could be a setup problem, not a Nagios problem?