When you install the PlateSpin® Orchestrate Agent on a machine, you can optionally install the Orchestrate Monitoring Agent along with it. The Monitoring Agent uses the Ganglia Monitoring Daemon (gmond) to automatically collect metrics and send them to the Orchestrate Monitoring Server. You can use the following command to check the status of an installed Monitoring Agent:
# /etc/init.d/novell-gmond status
If the daemon is operating normally, it returns a running status.
When you install and configure the Orchestrate Monitoring Agent (gmond), it is set by default to report metrics on port 8649, which is also detected by the Orchestrate Agent. When communication is established, the gmond daemon sends out metrics data, which are then gathered by the Orchestrate Agent and set as fact values associated with the resource where the daemon is running. You can verify the connection with the following command:
telnet localhost 8649
If gmond is running and communicating properly, an XML document listing the reported metrics is displayed.
This section includes information about the resource metrics facts that are gathered, the unit conversion performed by Orchestrate on the Ganglia-provided values, and how you can use these facts to help you manage the resources in the grid.