Service dependencies

[Thomas Sluyter]

I'm sorry if this is the second time this message gets sent to the  
list. I had a hunch that it didn't make it the first time I sent it...

============

Hi all.

I was actually wondering about the exact same thing Dirk was thinking  
about! Such a shortcut would really help out in easing the use of  
dependencies.

> Try this...
>
> define servicedependency{
> hostgroup_name windows-servers
> service_description NRPE_NT
> dependent_hostgroup_name windows-servers
> dependent_service_description Drive_C
> }

Ethan's solution wouldn't work if you look at it logically. Why?  
Because you're telling Nagios that:
* All instances of service A in hostgroup X
* Depend on all instances of service B in hostgroup X.

Meaning that all instances of A will "fail" if -any- instance of B  
goes down. That's not what we want to happen, is it? :p

Or am I completely off on this? Might be that I'm not reading this  
correctly.

As Dirk said: it would be great if there was some shortcut for  
telling Nagios that you want all instances of service A in hostgroup  
X to be dependant of service B on -their-own- host. That way you  
could take care of all dependencies for a whole hostgroup in a matter  
of a few dozen lines of code.


- Thomas Sluyter (Cailin)

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