Service Dependancies

[Marc Powell]

> -----Original Message-----
> From: nagios-users-admin at lists.sourceforge.net [mailto:nagios-users-
> admin at lists.sourceforge.net] On Behalf Of Jeffry Bilder
> Sent: Wednesday, March 15, 2006 12:16 PM
> To: nagios-users at lists.sourceforge.net
> Subject: RE: [Nagios-users] Service Dependancies
> 
> > -----Original Message-----
> > From: nagios-users-admin at lists.sourceforge.net [mailto:nagios-users-
> > admin at lists.sourceforge.net] On Behalf Of Jeffry Bilder
> > Sent: Wednesday, March 15, 2006 11:34 AM
> > To: nagios-users at lists.sourceforge.net
> > Subject: [Nagios-users] Service Dependancies
> >
> > I am currently trying to find a way to supress emails about services
> > being down if PING has a problem.  Does anyone else have it setup in
> > this manner?  For example...
> >
> > A windows machine is not pingable, suppress all other notifications
> > until Ping is accessible again.
> 
> This is standard behavior if you have a host check_command that
returns
> non-OK when the host is unavailable.
> 
> http://nagios.sourceforge.net/docs/1_0/networkreachability.html
> 
> I have read the documentation, and I am using 2.0.  I really wish this
> were the case by default cause I am getting notified that all the
> services are down when the host cannot be pinging.  Please check an
> example of a host in my hosts.cfg section:
> 
> define  host {
>         host_name                       S2NA1ROCK
>         alias                           S2NA1ROCK
>         address                         192.168.1.10
>         parents                         ROCK-Firewall
>         hostgroups                      Servers
>         max_check_attempts              10
>         active_checks_enabled           1
>         passive_checks_enabled          1
>         check_period                    24x7
>         obsess_over_host                1
>         check_freshness                 0
>         event_handler_enabled           1
>         flap_detection_enabled          1
>         process_perf_data               1
>         retain_status_information       1
>         retain_nonstatus_information    1
>         contact_groups                  admins,Server-Administrator
>         notification_interval           0
>         notification_period             24x7
>         notification_options            d,r
>         notifications_enabled           1
>         register                        1
>         }
> 
> Do I have something misconfigured that is still allowing all
subsequest
> services to alert?

Yes, you're missing a check_command for this host. That is required for
the behavior you want and with your config above the host itself is
never checked. If you're using the sample config files as a base, there
is a command definition named check-host-alive that you can use.

	check_command			check-host-alive

I would also set max_check_attempts to 1 or 2. You don't need more than
that to determine if the host is down and you want host checks to finish
as quickly as possible. _All_ other activity stops while hosts are being
checked.

--
Marc 


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