How to set host_check_alive command's time out to 2 minutes?

[Mathias Sundman]

On Mon, 12 Dec 2005, Subhendu Ghosh wrote:

> On Mon, 12 Dec 2005 Lui.external at infineon.com wrote:
> >
> > Is it possible for us to set the threshold for host_check_alive 
> > command time out to 2 minutes? We will considered the server is really 
> > down after 2 minutes.
>
> 2 minutes is a long time for a ping response.
>
> If you really want the 2 minutes, consider your retry-interval and max 
> retry setting rather than the command timeout.

For a service check you can use retry_check_interval and 
max_check_attempts, but as soon as a service check fails a host check will 
be done and the number of host_checks defined to run is executed in one 
series without any delay, so there is no real good way of making nagios 
"hold" for 2 minutes before considering it down. You could of cource make 
the host_check_alive script hold for two minutes before returning if the 
host is not responding, but that is probably not such a good idea as it 
will stall all other checks during that time.

You may however use escalations to suppress one or more notifications, to 
add a delay before a notification is accually sent even if the host is 
considered down immediatly when it doesn't respond to a number of pings.

I've also written a patch that adds a new host option, 
first_notification_delay that can be used to specify the time we want 
Nagios to wait before sending any notifications for a given host. You can 
find it in the last month archive of the nagios-devel list if you're 
interested.

//Mathias


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