Virtual Machines - define as parent or as host dependency...

[Martin Melin]

I think you should be fine with setting the VMWare host to be the parent of
your guests. It's the simplest configuration, it meets your goals (host down
suppresses guests, but host's services do not affect guests' notifications)
and it has the added benefit of looking good in the Status Map :-)

IMHO using parents for VMWare hosts/guests is within the intended use of the
directive, even though the docs only talk about network equipment, because
your guests are as directly dependent upon their host as a physical host is
of its switch.

On Mon, Jan 25, 2010 at 9:14 PM, Andrew Davis <nccomp at gmail.com> wrote:

>  I'm trying to figure out the best way to do this, yet keep things as
> simple as possible.
>
> Say I have a server called Saturn running VMWare. I'm monitoring this
> server with Nagios.
> I also have three VM's on Saturn: Jupiter, Mars, and Pluto
>
> I want to suppress all host and service alerts on Jupiter, Mars, & Pluto if
> the host Saturn is down (unreachable). I do NOT want to suppress host or
> service alerts from Jupiter, Mars, and Pluto if the VMWare processes
> (services) are down on Saturn. Basically, if my VM server is completely
> unreachable, don't bother me about its client VM's.
>
> Am I better off doing this with a host dependency? Something like:
>
> *define hostdependency {
> 	host_name			Host B
> 	dependent_host_name		Host C
> 	notification_failure_criteria	d,u
> 	}*
>
> Or am I better off defining Saturn as the parent of the VM's in the host
> config? Something like:
>
> *define host {
> 	host_name               jupiter
> 	use                     VMs
> 	alias                   jupiter
> 	address                 172.26.251.60
> 	parents                 saturn, tpdmzsw1
> }*
>
> I've successfully used the "parents" directive to define network topology,
> so I would think this would work. What might be the risks of defining both?
>
> --
>
>
>   A. Davis
>   Email:     nccomp at gmail.com
>
>   "There is no limit to what a man can accomplish
>    if he doesn't care who gets the credit." - Ronald Reagan
>
>
>
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-- 
Martin Melin
____________________________
op5 AB
http://www.op5.com

http://www.op5.org/
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