I am very new to monitoring and with linux. So i took the easy path and Installed FullyAutomatedNagios (FAN) on a linux machine (CentOS). and installed/configured NSclient++ on windows machine i wanted to monitor. Via webinterfece of FAN which is centreon i started to monitor basic parameters like (memory,cpu,disks,services etc) Via CHECK_NT commands. Now i want to move forward and want to monitor something more like DB performance,queries etc , but inorder to do that i need to install nagios plugins and i have no idea how can i do that.please help.