question about service dependencies and templa tes

[Kimmo Jaskari]

I'm also wrestling with this issue at the moment. From what I can see, there
is no way to do something like this:

define servicedependency{
	dependent_host_name		host_name
	dependent_service_description
service_description1,service_description2, .. service_descriptionN
	host_name				host_name
	service_description		service_description
	execution_failure_criteria	[o,w,u,c,n]
	notification_failure_criteria	[o,w,u,c,n]   
}

Of course, you can create one set of definitions specifying every single
service_description on one machine and then do a huge copy/paste of that
entire block, then search-and-replace the dependent_service description,
but... at this point my dependencies file is three times larger than the
entire hosts and services definition file and growing and already a gigantic
pain in the posterior to manage.

What I need is a way to do "on every host, separately make services 1, 2, 3
dependent on service X on the same host". Perfect for NRPE, to pick one
example, I want all the NRPE-based service checks dependent on NRPE itself
being up on that same machine.

Making service V on machine X dependent on service Y on machine Z is
probably useful for somebody but I can't understand why you cannot specify
multiple dependent services, as you can specify multiple machines?

> -----Original Message-----
> From: Carroll, Jim P [Contractor] 
> [mailto:jcarro10 at sprintspectrum.com] 
> Sent: den 18 februari 2003 18:09
> To: 'timwest at warwickshire.gov.uk'; Nagios-users at lists.sourceforge.net
> Subject: RE: [Nagios-users] question about service 
> dependencies and templa tes
> 
> 
> This is something I recently decided I needed to test out 
> myself.  I've got
> pretty much the same setup as you.  (It wouldn't surprise me 
> if you had
> 10-20 service checks dependent on nrpe_active, as I do.)
> 
> I can only suggest you check this out:
> 
> http://nagios.sourceforge.net/docs/1_0/templatetricks.html#ser
> vicedependency
> 
> I recently bounced a question very similar to yours off the 
> list, without
> any helpful responses.  All I can suggest is that you set up 
> a trivial case
> on a non-critical machine and test it out.  This is what I 
> intend to do,
> when I have time.
> 
> Let's make a deal:  Whichever one of us tests this first, 
> summarise to the
> list...?  :)
> 
> jc
> 
> > -----Original Message-----
> > From: timwest at warwickshire.gov.uk 
> [mailto:timwest at warwickshire.gov.uk]
> > Sent: Tuesday, February 18, 2003 6:50 AM
> > To: Nagios-users at lists.sourceforge.net
> > Subject: [Nagios-users] question about service dependencies and
> > templates
> > 
> > 
> > ***** This e-mail is communicated in confidence. It is 
> > intended for the
> > recipient only and may not be disclosed further without the 
> > express consent
> > of the sender. *****
> > 
> > I'm using nrpe to monitor the status of various filesystems 
> on several
> > machines on our network.
> > 
> > I have created the following service definition
> > 
> > define service {
> >      hostgroup_name host_group_a
> >      service_description root_filesystem
> >      ...
> >      ...
> > }
> > 
> > and
> > 
> > define service {
> >      hostgroup_name host_group_a
> >      service_description nrpe_active
> >      ...
> >      ...
> > }
> > 
> > Now I want to create a service dependency for root_filesystem on
> > nrpe_active without creating a separate entry for each 
> > filesystem on each
> > machine.
> > 
> > From reading the documentation I can make root_filesystem 
> dependent on
> > nrpe_active for all of the machines in host_group_a, but I 
> > only want it
> > dependent on nrpe on the machine with the filesystem.
> > 
> > The ability to add the same test to several hosts, just by 
> > changing the
> > contents of the host group is great, but if I have to add a 
> > separate entry
> > for the service dependency then takes that usefulness away.
> > 
> > Has anyone any ideas.
> > 
> > 
> > --
> > Tim West, CAMS ICT Services
> > Warwickshire County Council
> > Email: timwest at warwickshire.gov.uk
> > 
> > 
> > 
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