How to deal with hosts that are not always on

[Patrick Morris]

On 7/29/2012 1:51 AM, Marc Haber wrote:
> Hi,
>
> I have a number of hosts that are not always turned on, such as my
> Notebook, my home server (which sleeps if not used) and a number of
> test VMs. To get a reasonable volume of checks in my test installation
> of Nagios, I would like to have those machines monitored by it.
>
> Obviously, I have notifications for those hosts turned off. This,
> however, leads to non-zero numbers in the critical, warning and
> unknown fields in the CGI, which gives a wrong impression of my health
> status since it is normal and expected that those hosts/services are
> down.
>
> Is there any solution for this dilemma? Can I have Nagios monitor
> hosts without reporting them as down when they are down?
>
> I know this may sound strange, but I would like to have statistics
> about how long the machines have been up and when.
>
> Greetings
> Marc
>
If you want to know how long the machines have been up and when, don't 
you also need to know when they're not up?  I'm not sure how you'd get 
any idea of your uptimes if you completely ignore downtimes -- Nagios 
would think they'd always been up, and you'd have no usable statistics.

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