To perform an automated cluster upgrade from Ambari, your cluster must meet the following prerequisites:
Item | Requirement | Description |
|---|---|---|
Cluster | Stack Version | Must be running HDP 2.2 Stack. This capability is not available for HDP 2.0 or 2.1 Stacks. |
Version | Target Version | All hosts must have the target version installed. See the Register Version and Install Version sections for more information. |
HDFS | NameNode HA | NameNode HA must be enabled and working properly. See the Ambari User’s Guide for more information Configuring NameNode High Availability. |
HDFS | Decommission | No components should be in decommissioning or decommissioned state. |
YARN | YARN WPR | Work Preserving Restart must be configured. |
Hosts | Heartbeats | All Ambari Agents must be heartbeating to Ambari Server. Any hosts that are not heartbeating must be in Maintenance Mode. |
Hosts | Maintenance Mode | Any hosts in Maintenance Mode must not be hosting any Service master components. |
Services | Services Up | All Services must be started. |
Services | Maintenance Mode | No Services can be in Maintenance Mode. |
If you do not meet the upgrade prerequisite requirements listed above, you can consider a Manual Upgrade of the cluster.
