Transitioning to Cloudera Manager This section helps you to transition from HDP 2.6.5.x to Cloudera Manager and CDP Private Cloud Base Pre-transition stepsFrom Ambari configurations, collect passwords of databases, keystores, and IDM services for components that are not part of the transition. This information will help in starting the services in Cloudera Manager after transition.Cloudera Manager Installation and Setup Install Cloudera Manager, install Cloudera Manager agents and daemons, add Cloudera Management service, enable TLS, and finally configure clusters to use Kerberos.Installing JDBC DriverProxy Cloudera Manager through Apache KnoxIn order to have Cloudera Manager proxied through Knox, there are some steps you must complete.Transitioning HDP cluster to CDP Private Cloud Base cluster using the AM2CM tool Use AM2CM tool to transition from Ambari-managed cluster to Cloudera Manager-managed cluster. Post transition stepsYou must complete the post transition steps to start the services in CDP Private Cloud Base.HDFSPerform the following post migration steps. SolrTo take a backup, perform the following steps after the transition. KafkaYou must cleanup metadata on broker hosts after migrating the Ambari-managed HDP cluster to CDP Private Cloud Base.YARNPerform the following post migration steps. SparkYou must initialize a few directories for the Spark service.TezInstall the Tez tar files on HDFS.HiveYou need to complete some post-migration tasks after upgrading to CDP. You need to activate Ranger services for Hadoop SQL (Hive resources) and HDFS paths to external tables. See CDP Private Cloud Base Post-Upgrade Migration (link below) for information about several other tasks and important post-upgrade information.HBasePost-migration, HBase hook for Atlas is not enabled by default on AM2CM migrated clusters. you must manually enable HBase hook.OoziePerform the following post migration tasks.Migrating Atlas dataAfter Atlas is available on the CDP Private Cloud Base cluster, you must import the Atlas data that the Atlas migration exporter utility exported from the HDP 2.6.5.x cluster.PhoenixAdd the Apache Phoenix service. If you are using Phoenix Query Server (PQS) in your source HDP deployment, you must manually add the Apache Phoenix service using Cloudera Manager to complete the Phoenix upgrade.Starting all servicesYou must now start all the services. YARN Queue ManagerPerform the following post migration step to add YARN Queue Manager.Hive Policy AdditionsHive Metastore Canary test might fail on clusters migrated from HDP because the service account used to perform these tests is different between the two management consoles.KnoxPerform the following post migration steps.Client ConfigurationsMigrating from Ambari to Cloudera Manager can leave the Ambari-managed HDP artifacts and links that may not have changed. After everything has been configured, deploy Client Configuration [Cloudera Manager > Clusters > Actions > Deploy Client Configurations]. This fixes any missing configuration references in the cluster. Securing ZooKeeperBy default, the AM2CM tool adds the -Dzookeeper.skipACL=yes configuration to assist with the migration. You must remove the -Dzookeeper.skipACL=yes configuration under Java Configuration Options for Zookeeper Service to secure ZooKeeper and restart the service.Zeppelin Shiro configurationsIf you had Zeppelin Shiro configurations in the HDP cluster, then you must configure them manually on the CDP Private Cloud Base cluster. Apache Hive Changes in CDPYou need to know where your tables are located and the property changes that the upgrade process makes. You need to perform some post-migration tasks before using Hive tables and handle semantic changes.
