how to avoid host dependency with check_cluster

[Mike Lindsey]

On 1/13/12 2:44 AM, Morty wrote:
> I've gotten check_cluster working to monitor a service cluster per the
> docs.  It works at a basic level.  Thanks!
>
> Problem: service definitions seem to require an associated host or
> hostgroup.  I don't want to tie the check_cluster to an individual
> host, because if that host goes down, a different host in the cluster
> could still be up.  But I also don't want it tied to every host in the
> cluster because then I could get duplicate notifications.
>
> What am I missing?
>
The easy solution.  Add a host entry called "WWW-Cluster1" or whatever 
you want it to be called..  Set the ip address to 127.0.0.1, and your 
host up/down check to some always-alive check ("echo OK" will do fine).

Then attach your cluster services to that.  You could even have your 
host availability check be a check_cluster command that pings all your 
hosts.

-- 
Mike Lindsey


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