This section explains how to configure a highly-available NameNode. The following topics provide more information and instructions:

• Introduction to HDFS High Availability
• Configuring Hardware for HDFS HA
• Configuring Software for HDFS HA
• Deploying HDFS High Availability
• Upgrading an HDFS HA Configuration to the Latest Release
• Configuring other Components to use HDFS HA
• Administering an HDFS High Availability Cluster