Service / Host dependencies

[Taylor Dondich]

Are you regularly checking the hosts?  (This is done by specifying
check interval, retry interval in your host definitions,
http://nagios.sourceforge.net/docs/3_0/hostchecks.html)

It seems like your service checks are running, and when they go down,
they trigger an on-demand host-check.  For this, you'll probably want
to check to see if you're checking hosts at regular intervals, and if
the host changes to down state, my understanding is that the services
will probably not send out notifications...but don't hold me to that,
I believe it's true.

Of course, no matter what happens, it's quite possible that a service
check will happen to run before your regular host check does, and it
will trigger the on-demand host check, which means you may get a
service alert notification anyways.

Taylor

On Thu, Aug 21, 2008 at 3:22 PM, Jay Chandler <lists at sequestered.net> wrote:
> Taylor Dondich wrote:
>>
>> Kind of defeats the purpose, doesn't it?  The normal process is, even
>> if a host is up, the services it provides could be dead in the water.
>> I don't think you really want this, but instead, if you want to give
>> the service check more time to determine if a problem is REALLY a
>> problem, increase the max_check_attempts of the service in question,
>> giving Nagios more time to check the service to really change it's
>> state to a HARD state.  Read up on different states and how they work
>> at:
>>
>> http://nagios.sourceforge.net/docs/3_0/statetypes.html
>>
>
> You're right-- I wasn't clear.  I still want to know if the services die,
> but in the event that the services die because the host is dead, I'd rather
> get a single "host down" message instead of eight "X Service on $HOST isn't
> working" messages.
>
> --
> Jay Chandler / KB1JWQ
> Living Legend / Systems Exorcist
> Today's Excuse: Just type 'mv * /dev/null'
>
>

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