PNP4Nagios // we assume you have already install nagios core Part 1. installation of pnp4nagios We start with the simplest. We download the latest available version of pnp4nagios, in our case 0.6.24, unpack, compile and activate the service. Prerequisite software required - rrdtool - librrds-perl - g++ - php5-cli - php5-gd - libapache2-mod-php5 tar zxvf pnp4nagios-0.6.24.tar.gz cd pnp4nagios-0.6.24 ./configure make all make fullinstall To check pnp4nagios http://localhost/pnp4nagios/ We must remove the following file if we have the pnp4nagios: rm -rf /usr/local/pnp4nagios/share/install.php Part 2. Edit nagios.cfg This is the most complicated part, we need to edit the file and add the following lines indicated. We begin with the main configuration file for Nagios, where besides add...