Apache Ambari User Guide
Also available as:
PDF
loading table of contents...

NameNode High Availability

To ensure that a NameNode in your cluster is always available if the primary NameNode host fails, enable and set up NameNode High Availability on your cluster using Ambari Web.

Follow the steps in the Enable NameNode HA Wizard.

For more information about using the Enable NameNode HA Wizard, see How to Configure NameNode High Availability.