Apache Ambari Operations
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Deleting a Host from a Cluster

Deleting a host removes the host from the cluster.


Before deleting a host, you must complete the following prerequisites:

  • Stop all components running on the host.

  • Decommission any DataNodes running on the host.

  • Move from the host any master components, such as NameNode or ResourceManager, running on the host.

  • Turn off host Maintenance Mode, if it is on.

To delete a component:


  1. Using Ambari Web, browse the hosts page to find and click the FQDN of the host that you want to delete.

  2. On the Host-Details page, click Host Actions.

  3. Click Delete.

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