Another nagios update – another issue -…

[1490254976] Event broker module ‘NERD’ deinitialized successfully.
[1490254991] Failed to obtain lock on file /var/run/nagios/nagios.pid: No such file or directory
[1490254991] Bailing out due to errors encountered while attempting to daemonize… (PID=792)

SHIT!

I had to

mkdir /var/run/nagios
chown nagios:nagios /var/run/nagios

And restart nagios.