Depending on the Service, the Summary tab includes a Metrics section which is by default populated with important service metrics to monitor.

This section of Metrics is customizable. You can add and remove widgets from the Dsahboard as well as create new widgets. Widgets can be private only to you and your dashboard or shared in a Widget Browser library for other Ambari users to add/remove the widget from their Dashboard.

	Important
	You must have the Ambari Metrics service installed to be able to view, create, and customize the Service Dashboard. Only HDFS, Hive, HBase, and YARN have customizable service dashboards.