Deleting Hosts

Minimum Required Role: Full Administrator

You can remove a host from a cluster in two ways:
  • Delete the host entirely from Cloudera Manager.
  • Remove a host from a cluster, but leave it available to other clusters managed by Cloudera Manager.
Both methods decommission the hosts, delete roles, and remove managed service software, but preserve data directories.

Deleting a Host from Cloudera Manager

  1. In the Cloudera Manager Admin Console, go to Hosts > All Hosts.
  2. Select the hosts to delete.
  3. Select Actions for Selected > Hosts Decommission.
  4. Stop the Agent on the host. For instructions, see Starting, Stopping, and Restarting Cloudera Manager Agents.
  5. In the Cloudera Manager Admin Console, go to Hosts > All Hosts.
  6. Reselect the hosts you selected in step 2.
  7. Select Actions for Selected > Remove from Cloudera Manager.

Removing a Host From a Cluster

This procedure leaves the host managed by Cloudera Manager and preserves the Cloudera Management Service roles (such as the Events Server, Activity Monitor, and so on).
  1. In the Cloudera Manager Admin Console, go to Hosts > All Hosts.
  2. Select the hosts to delete.
  3. Select Actions for Selected > Remove From Cluster. The Remove Hosts From Cluster dialog box displays.
  4. Leave the selections to decommission roles and skip removing the Cloudera Management Service roles. Click Confirm to proceed with removing the selected hosts.