Using Nagios to monitor "service-less" hosts

Sloane, Robert Raymond sloane at ku.edu
Tue Nov 7 17:31:51 CET 2006


> Host definition for SC-Gateway:
> --------------------------------------------------------------
> ----------------
> define host {
>     check_interval            1

You might want to look at the documentation for the check_interval
directive for host objects.  It says:

NOTE: Do NOT enable regularly scheduled checks of a host unless you
absolutely need to! Host checks are already performed on-demand when
necessary, so there are few times when regularly scheduled checks would
be needed. Regularly scheduled host checks can negatively impact
performance - see the performance tuning tips for more information. This
directive is used to define the number of "time units" between regularly
scheduled checks of the host. Unless you've changed the interval_length
directive from the default value of 60, this number will mean minutes.
More information on this value can be found in the check scheduling
documentation.

and there is a link to performance tuning tips that says:

Don't schedule regular host checks. Do NOT schedule regular checks of
hosts unless absolutely necessary. There are not many reasons to do
this, as host checks are performed on-demand as needed. To disable
regular checks of a host, set the check_interval directive in the host
definition to 0. If you do need to have regularly scheduled host checks,
try to use a longer check interval and make sure your host checks are
optimized (see above).
-- 
Bob Sloane, University of Kansas Computer Center, Lawrence, KS, 66045
Email:sloane at ku.edu http://www.ku.edu/home/sloane Phone:(785)864-0444
 

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