hint on service dependency configuration

[Assaf Flatto]

On Monday 27 April 2009 11:05:39 Frank Altpeter wrote:
> Hi list,
>
> I need a little input on a configuration problem. I've got a list of
> hosts, which are running NRPE to check local services. So, if the nrpe
> daemon on one of these hosts stops working, I get alarms for every
> configured nrpe-check. Now I thought that the service dependency would
> be the configuration of my choice to suppress multiple alarms. But I'm
> a bit confused how to configure this correctly.
> I'm checking the nrpe service itself on these hosts, and want to
> suppress alarms for the other nrpe-based services if the nrpe check
> fails. Is there a way to configure this in an optimized way, without
> having one servicedependency block for each host and each nrpe check ?
> As far as I understand servicedependency config, there can be multiple
> hosts as dependent, but only one dependent service with one depending
> host and service, which would be a pain to configure with 130 hosts :)
>
> I would imagine doing something like that (for example):
>
> # Suppress notifications for nrpe-based services if nrpe check itself fails
> define servicedependency {
>         host_name                	        *
> 	service_description		        NRPE
> 	dependent_host_name		$self
> 	dependent_service_description	DISKS,SWAP,USERS
> 	execution_failure_criteria	w,u,c,p
> 	notification_failure_criteria	o,w,u,c,p
> }



What you want is like what you put in the example above but you want to change it to 

 define servicedependency {
         host_name                	        *
 	service_description		        NRPE
 	dependent_host_name		*
 	dependent_service_description	DISKS,SWAP,USERS
 	execution_failure_criteria	w,u,c,p
 	notification_failure_criteria	o,w,u,c,p
 }

also you may want to change the notification  criteria to a more suitable like c,w,u ( that means in 
the case of the NRPE being critical , unknown, or warning , you will not get a n alert) .

you can also do it with hostgroups

define servicedependency {
         hostgroups_name                	        group1,group2
 	service_description		        NRPE
 	dependent_hostgroups_name	group1,group2 
 	dependent_service_description	DISKS,SWAP,USERS
 	execution_failure_criteria	w,u,c
 	notification_failure_criteria	o,w,u,c
 }


Assaf




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