Nagios Support Forum

I would like to know the details of what can be done and what cannot be thorugh KPI's in Nagios.

Is this feasible in Nagios ?

I am not sure what you are asking for. Do you mean "Key Performance Indicators" when you say KPI? If so that is more of a high-level metric of the overall performance in a certain area, and not something concrete like a CPU check that can be assigned a number or a percentage.