Enable high availability (HA) for an HDFS NameNode.
This command only applies to CDH4 HDFS services.
The command will set up the given "active" and "stand-by" NameNodes as an HA pair. Both nodes need to already exist.
If there is a SecondaryNameNode associated with either given NameNode instance, it will be deleted.
Note that while the shared edits path may be different for both nodes, they need to point to the same underlying storage (e.g., an NFS share).
As part of enabling HA, any services that depend on the HDFS service being modified will be stopped. The command arguments provide options to re-start these services and to re-deploy the client configurations for services of the cluster after HA has been enabled.
|clusterName||The name of the cluster.||path|
|serviceName||The HDFS service name.||path|
Arguments for the command.
Information about the submitted command.