Rollback HDP Services

After Ambari rollback, you must rollback the HDP services in the following order to restore to HDP 2.6.5.

Overview
You can roll back an upgrade from HDP 2.6.5.x to CDP Private Cloud Base 7.1.6, 7.1.7 SP2, and 7.1.8. The rollback restores your HDP cluster to the state it was in before the upgrade, including Kerberos and TLS/SSL configurations.
ZooKeeper
Use the following step to restore the backed-up data for ZooKeeper. For zookeeper, the default folder is /hadoop/zookeeper.
Ambari-Metrics
To restore the backed-up Ambari-Metrics data, downgrade the ambari-metrics packages on all hosts and restore the backed-up-ambari-metrics data.
Ambari Infra Solr
Use the following steps to restore backed-up ambari infras solr data.
Ranger
Rollback procedure of Ranger includes restoring Ranger admin database and Ranger KMS database.
HDFS
Before starting the rollback procedure, make sure that all HDFS service roles are stopped.
YARN
If you have performed HDFS rollback already, there are no additional rollback steps required for YARN.
HBase
If you have performed HDFS rollback already, there are no additional rollback steps required for HBase.
Kafka
To roll back Kafka, perform the following steps.
Atlas
Perform the following steps to restore HBase tables and ATLAS_ENTITY_AUDIT_EVENTS table.
Hive
You must delete your existing Hive Metastore database to roll back the Hive services.
Spark
Know more about the Spark roll back.
Oozie
To roll back the Oozie service, you must restore the Oozie database.
Knox
With the backup and rollback of Ambari, Knox is also backed up and rolled back by default.
Zeppelin
With the backup and rollback of HDFS, Zeppelin is also backed up and rolled back by default.
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Parent topic: Upgrading HDP to Cloudera Runtime 7.1.x