Service dependancy - circular execution

[Thomas Guyot-Sionnest]

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Ints wrote:
> Hi!
> 
> I noticed that it's not possible for 2 hosts to have depend on the same
> service on each other, but it's troublesome as I don't want to have it
> notify if the service is running on 1 of the hosts, here's an example:
> define servicedependency{
>         host_name                       server0
>         dependent_host_name             server1
>         dependent_service_description   service0
>         service_description             service0
>         inherits_parent                 0
>         execution_failure_criteria      n
>         notification_failure_criteria   o
>         }
> define servicedependency{
>         host_name                       server1
>         dependent_host_name             server0
>         dependent_service_description   service0
>         service_description             service0
>         inherits_parent                 0
>         execution_failure_criteria      n
>         notification_failure_criteria   o
>         }
> Basically, the service must run on 1 of the servers, it'll NEVER run on
> both at the same time and while it's running on 1 but not on the other,
> I don't want to have notifies sent for the service not running on one of
> the hosts. I understand why it could result in a deadlock, but it won't
> in my case, so unless there's some hidden option to bypass this security
> error (which I haven't found in 3.0b1) I'd like to have such an option
> for servicedependancy.

There's a check_cluster in the latest Nagios-plugins distribution that
will allow you to do what you want.

1. Disable notifications for your services (Ex:"notification_options n")
2. Create a check_cluster checkcommand and service and use the
$SERVICESTATEID:host_name:service_description$ macros to fill-in the
service status.

- --
Thomas
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