[Wolves] Icinga (Nagios)

[Peter Cannon]

On 14/05/10 12:40, Andy Jewell wrote:
> Pete, Nagios/Icinga is still worth a look.
>
> Yes, you do need to have the firewall open on the other end. Your firewall ought (!) to notice that the incoming packets came in as a result of a connection at your end, so you shouldn't need to configure that.
>
> The port you need open for nrpe is 5666 unless you set it as something else.
>
> I'm guessing here, but Icinga probably uses the same agent (nrpe) as nagios.
>
> If you install the nrpe package on your system, you just have to edit /etc/nagios/nrpe.cfg (or wherever your distro puts it - that's the default on RH/CentOS). Right at the end should be a load of examples, commented out. You also need to change the "allowed_hosts" param  near the top, but you can probably leave the rest at default.
>
> You can run nrpe as a service in its own right or via (x)inetd, whichever is easiest.
>
> One tip: you can more easily check if its working by running checks manually from the command line on your monitoring box:
>
> # locate check_nrpe
> /usr/lib64/nagios/plugins/check_nrpe
> # /usr/lib64/nagios/plugins/check_nrpe -H www.example.com -c check_total_procs
> PROCS OK: 105 processes
>
> Once you've got it going, you might like to try out check_mk, which is an add-on to Nagios (probably works with icinga too) that makes it a LOT easier to use, and provides nicer graphs via RRDTool and PNP.
>
> Hope that helps.

It does actually, in an explanation sort of way. I have no control over 
our firewall here which is a real bummer.

check_mk? Hm sounds fun, I've installed the Nagios plugins is it part of 
that or do I need to look somewhere?