Monitoring SSH for any host
In this recipe, we'll learn how to check that the SSH daemon on a remote host responds to requests, using the check_ssh plugin, and the command of the same name. This will allow us to be notified as soon as there are problems connecting to the SSH service.
Getting ready
You should have a Nagios Core 3.0 or newer server with at least one host configured already. We'll use the example of troy.naginet, a host defined in its own file. You should also understand the basics of how hosts and services relate, which is covered in the recipes of Chapter 1, Understanding Hosts, Services, and Contacts.
It may be a good idea to first verify that the host for which you want to add monitoring is presently running the SSH service that ...
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