I installed Nagios successfully on a Linux server.My boss wants Nagios to do just three things.1.) Monitor disk free space on the local server.2:) Monitor any disk drive failures on the local server.3.) Send a warning/alert email to our I.T. Support if anything goes wrong.
How I configure Nagios to do this if it can?
It can do those things, and a good place to start would be the documentation that comes with nagios, which is linked to in the web gui. There is even a quick start guide. After you read that, come back with more specific questions, if needed.