Manage a selected service on your cluster by performing service actions. In Services, select the Service Actions drop-down menu, then choose an option. Available options depend on the service you have selected. For example, HDFS service action options include:

Optionally, choose Turn On Maintenance Mode to suppress alerts generated by a service before performing a service action. Maintenance Mode suppresses alerts and status indicator changes generated by the service, while allowing you to start, stop, restart, move, or perform maintenance tasks on the service. For more information about how Maintenance Mode affects bulk operations for host components, see Setting Maintenance Mode.