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8. 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 Maintenance Mode, if necessary, for the host.