So, the monitoring server is now fully up and running, and so far it monitors one host—the monitoring server itself. What we are most interested in is monitoring the web server that we built in Chapter 3, My First Puppet Module. On a high level, the process is the following.
Configure web server host and checks on the Nagios Server
Apply nagios::client class on the web server
Let's tackle the first bullet point first and add the web server host and the checks for it on the Nagios Server.