This document discusses monitoring PowerKVM nodes using the Ganglia and Nagios monitoring systems. It provides an overview of Ganglia and how it can be used to monitor metrics like CPU, memory, disk, and network usage on PowerKVM nodes and their virtual machines. It also discusses how Nagios can monitor PowerKVM hosts and services, how to add PowerKVM nodes to the Nagios server, and examples of host states and performance monitoring that Nagios provides.