Linux

Check Diskspace Used by a Mounted Volume

http://www.yourownlinux.com/2014/12/nagios-bash-plugin-to-monitor-disk-space-utilization-on-linux-server.html

For Performance Gauges to show details properly, performance data should be in following format: 'VarName'=CurrentValue Unit;WarningValue;CriticalValue;MininumValue;MaximumValue Important: 1. It uses the output of 'df' command.…

Operating Systems

check_cputime

http://www.yourownlinux.com/2014/09/nagios-bash-plugin-to-monitor-cpu-utilization-on-linux-server.html

For Performance Gauges to show details properly, performance data should be in following format: 'VarName'=CurrentValue Unit;WarningValue;CriticalValue;MininumValue;MaximumValue Important: 1. It uses the output of 'sar' command.…

Linux

check_loadaverage

http://www.yourownlinux.com/2014/09/nagios-bash-plugin-to-monitor-load-average-on-linux-server.html

For Performance Gauges to show details properly, performance data should be in following format: 'VarName'=CurrentValue Unit;WarningValue;CriticalValue;MininumValue;MaximumValue Important: 1. It uses the output of 'uptime' command.…

Other Tutorials And HOWTOs

How To Create a Nagios Plugin Using Bash Script

http://www.yourownlinux.com/2014/06/how-to-create-nagios-plugin-using-bash-script.html