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Nagios Core Administration Cookbook - Second Edition by Tom Ryder

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Changing thresholds for PING RTT and packet loss

In this recipe, we'll set up a service for a host that monitors PING and take a look at how to adjust the thresholds for the WARNING and CRITICAL states, which is done using command arguments. We'll accomplish this by setting up a service for an existing host that's already being checked with a check_command, such as check-host-alive. Our service will be used to monitor not whether the host is completely down, but whether it's responding to PING requests within a reasonable period of time.

This could be useful to notify and assist in diagnosing problems with the actual connectivity of a service or host.

This recipe will therefore serve as a good demonstration of the concepts of supplying arguments ...

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