Understanding Unhandled Services / Hosts

[Julian_Grunnell at tdwh.co.uk]

*******************************************************
Julian Grunnell
Unix Analyst
TD Waterhouse International
Leeds, West Yorkshire

Tel: 0113 346 2824
Extn: 32824
Mobex: 52824
*******************************************************



Yueh-Hung Liu <yuehung.liu at gmail.com> 
09/02/2011 13:26
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Subject
Re: [Nagios-users] Understanding Unhandled Services / Hosts






because the host is down, it assumes all its service are also unavailable.
therefore the first priority task is to "handle" the problem of the host.
so what i guess is just for simplifying display, only the host which
is down appears in Unhandled section.


On Wed, Feb 9, 2011 at 8:16 PM,  <Julian_Grunnell at tdwh.co.uk> wrote:
>
> Hi - would someone be able to explain in detail the behaviour of this? I
> have a Nagios setup that in the Problems page is showing a host as DOWN 
-
> it's currently failing my default FPING test. It also has a number of 
simple
> check_tcp commands run against it, all of which are timing out because
> obviously with the host down I'm getting a "CRITICAL - Socket timeout 
after
> 10 seconds" for them all. BUT when looking in Unhandled Services they 
don't
> appear. The host itself DOES appear in the Unhandled Hosts screen. There 
are
> NO comments / acknowledgements in place at all for this host.
>
> Does anyone know why the service checks don't appear as an Unhandled
> Service?
>
> Thanks - J.
>


Thanks, your explanation does make sense as at the time I'd not 
acknowledged it, no scheduled downtime or anything. I'll just have to keep 
an eye on it for when this happens again or I'll simulate an error when I 
get time. I can just about remember that with the HOST critical it 
appeared in the "unhandled Hosts" section. And looking at the "Service 
Status Details" page the "Attempt" column remained on "1/3" whilst the 
host was DOWN. So it certainly was as if the HOST is DOWN so there is no 
point in it trying to perform any Service checks as these are always going 
to fail.

Julian.

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