Multiple Inheritance

[Caylan Van Larson]

I setup a separate Nagios install for testing and verified (through  
the object pre-cache) that two "used" objects do not result in a union  
of the contact_groups, even if they both contain the "+" character.

Any chance on having this feature added?

It seems I need a way to use an object by itself (such as "use  
oracle"), or in conjunction with other objects like, "use  
production,oracle."  This would be better than having to create  
separate objects for each case:  [dev/test/qa/production] * [oracle/ 
websphere/host] * [cpu_load/memory/swap/process/filesystem].

---

Caylan


On Mar 21, 2008, at 12:55 PM, Caylan Van Larson wrote:

> Howdy,
>
> I'm trying to design a multiple-inheritance structure for a new  
> Nagios 3 setup.  Consider the following:
>
>
> define service{
>  name                            oracle
>  use                             fast,default
>  service_description             Oracle Server
>  contact_groups                  +oracle_dba
>  check_command                   check_nrpe!check_oracle
>  register                        0
> }
>
> define service{
>  name                            fast
>  retry_check_interval            2
>  normal_check_interval           5
>  register                        0
> }
>
> define service{
>  name                            production
>  use                             default
>  contact_groups                  prod_responders
>  register                        0
> }
>
> define service{
>  name                            filesystem
>  use                             slow,default
>  contact_groups			 +storage_admins
>  register                        0
> }
>
> define service{
>  name                            slow
>  normal_check_interval           30
>  register                        0
> }
>
> In this scenario "default" contains the default definitions, this is  
> sometimes written as "generic-service."
>
> Now, for some examples:  Production Oracle
>
> define service{
>  use				 oracle,production
>  host_name			 lnx50
> }
>
> I expect by using production that prod_responders replaces the  
> default contact_group.  Next, the additive (+) inheritance of  
> oracle_dba should create a union between the two contact_groups.   
> Will this declaration work as expected?
>
> Next... an Production Oracle Filesystem
>
> define service{
>  use				 filesystem,oracle,production
>  service_description             Filesystem: /oradata
>  host_name			 lnx50
>  check_command                   check_nrpe!check_oradata
> }
>
>
> I only partially understand the precedence at work here.  I  
> understand that it will operate with a "slow" check interval, but  
> what about the contact_groups?  Since "filesystem" brings in the  
> default early (with it's own default contact groups), then does it  
> ever add the contact_group oracle_dba, or does it all get replaced  
> by production_responders?
>
> Thoughts?
>
> ---
>
> Caylan
>
>
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