Excluding a hostgroup from a service check

[Edward Trochim]

Ah, that is exactly what I was missing. Thanks!

On Apr 9, 2009, at 10:41 AM, Jim Avery wrote:

> 2009/4/9 Edward Trochim <ejtrochim at alaska.edu>:
>> I have a service template that specifies several host groups and one
>> host to check. One of the services that inherits this template should
>> not be executed by one of the host groups defined. I read the object
>> tricks documentation page and found that I could include a ! before
>> the name in a hostgroup_name definition in the service definition to
>> exclude that hostgroup from that service. However, when I do that
>> nagios excludes all hostgroups from the list from running that  
>> service.
>>
>> That explanation of the problem might be a little thick so here is an
>> abbreviated example.
>>
>> I have a service template like this:
>>
>> define service{
>>         name                           standard-check
>>         use                                    generic-service
>>         hostgroup_name         hostgroup1, hostgroup2, hostgroup3,\
>>                                                hostgroup4,  
>> hostgroup5, hostgroup6,\
>>                                                hostgroup7
>>         host_name                      host1
>>         servicegroups          standard_checks
>>         register                               0
>> }
>>
>> And a service definition like this. I want to exclude hostgroup5 from
>> this one service definition:
>>
>> define service{
>>         use                                    standard-check
>>         hostgroup_name         !hostgroup5
>>         service_description    Disk Space
>> }
>>
>> Instead of doing what I want this excludes every hostgroup defined in
>> the template. host1 still gets the service though.
>>
>> I am currently running nagios version 3.0.6.
>>
>> Is this a bug in nagios or am I misunderstanding the way this should
>> behave?
>>
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>
> The line "hostgroup_name         !hostgroup5" will completely
> supercede anything previously specified for hostgroup_name in the
> template.
>
> If you want it to be processed as an addition to what was in your
> template, you need to prefix the list with a "+".  So in your service
> definition, you need to put:
>
>  hostgroup_name         +!hostgroup5
>
> I've only ever used this syntax myself for specifying additional
> contacts, but I guess the logic would be the same for hostgroups too.
> Give it a try anyway and come back if it doesn't work.
>
> I assume you're using Nagios 3.  I don't think use of "+" in this way
> was possible in version 2.
>
> Cheers,
>
> Jim


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