Nagios - Server Monitoring

In order to get notifications when any of my services is down. I've installed Nagios on my server. Here are the sites I referred to while installation:

Setup

Installation Steps (Detailed): http://geekpeek.net/install-nagios-core-4-on-ubuntu/

Further Configuration for Notification: http://idevit.nl/node/93

Notice

Things have to be noticed while referring to the two sites:

• restart apache after add new config file for Nagios
• update your email address in contacts.cfg (in order to receive the mail)