Nagios reports its own host as DOWN
alnis.morics at gmail.com
Wed Sep 21 10:12:06 UTC 2016
>I installed nagios4-4.1.1_5,1 on a FreeBSD 10.3 jail. (It's my first
>time with Nagios)
>I managed the core to show up as working, and the system now lists its
>first host (the one it is installed on) -- as DOWN.
>Small wander, because the way it checks this is by pinging "localhost"
>(/sbin/ping -n -c 5 127.0.0.1 ), although ping is disabled in my jail
>(as per default), and its localhost address is changed to 127.0.0.3.
>How can I correct this checking? I found there is a script for checking
>but, again, I can't find any hint of how to use it or whether it can
>help me at all. Will I be able to check services on jails of other
>Thanks for any advice,
Ok, sorted out by myself, sorry for the noise.
1. Although I already changed the localhost's address in /etc/hosts on
the jail, Nagios doesn't respect it. It needs the address defined at
2. If I'm going to use this jail as a Nagios host, I'll need the ping
enabled anyway for checking other hosts, so I enabled it. Now the Nagios
host appears as UP.
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