Nagios app, gives you an idea about nagios monitoring tool , this nagios app makes you browse the open source nagios site : <a href="https://www.google.com/url?q=https://www.google.com/url?q%3Dhttp://nagios.sourceforge.net/docs/3_0/quickstart.html.nagios%26sa%3DD%26usg%3DAFQjCNH-Iqx5m1etNgF99IavhmoEQlIRPw&sa=D&usg=AFQjCNEKdZHaBCRtUoF20g4irHaY6rmqHQ" target="_blank">http://nagios.sourceforge.net/docs/3_0/quickstart.html.nagios</a> app is filled with with all installation methods for all linux distribtions.there's a youtube nagios videos section too ,