Delete host which is down permenantally

[#1]

In hdp cluster one of the host is down permanently.

What are the prerequisites to remove that host from cluster.

[#2]

@John

Basically the steps to remove a Node from cluster is described in the following doc. https://docs.hortonworks.com/HDPDocuments/Ambari-2.7.3.0/managing-and-monitoring-ambari/content/amb_...

Before deleting a host, you must:

• 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.

However if you have lost a Node which has master components installed in it like HIveMetastore/NameNode/Resource Manager ....etc then the process is bit complex and you might be loosing the data.