Uninstalling CTE for the Hadoop Cluster

This section explains how to remove CTE and restore the environment back to the non-CTE cluster environment. Thales recommends uninstalling the agent from HDFS nodes one by one, starting from the DataNode. Uninstall the agent from the NameNode last.

1. Shut down one DataNode.

2. Perform the normal agent uninstall procedure.

3. Go to Ambari, remove the DataNode host from the CipherTrust Configuration Group.

4. Start the DataNode.

5. Delete the CipherTrust Configuration Group from Ambari when agent is uninstalled from all DataNodes.

6. Repeat these steps for each DataNode.

7. Repeat these steps for each NameNode.