Deploying the ResourceManager HA Cluster
yarn-site.xml file and configuration files and start
Zookeeper, HDFS, and YARN in that order.
- Copy the
etc/hadoop/conf/yarn-site.xmlfile from the primary ResourceManager host to the standby ResourceManager host.
- Make sure that the
clientPortvalue set in
etc/zookeeper/conf/zoo.cfgmatches the port set in the following
<property> <name>yarn.resourcemanager.zk-state-store.address</name> <value>localhost:2181</value> </property>
- Start ZooKeeper. Execute this command on the ZooKeeper host machines:
su - zookeeper -c "export ZOOCFGDIR=/usr/hdp/current/zookeeper-server/conf ; export ZOOCFG=zoo.cfg; source /usr/hdp/current/zookeeper-server/conf/zookeeper-env.sh ; /usr/hdp/current/zookeeper-server/bin/zkServer.sh start"
- Start HDFS.
- Start YARN.
- Set the active ResourceManager:
MANUAL FAILOVER ONLY: If you configured manual ResourceManager failover, you must transition one of the ResourceManagers to Active mode. Execute the following CLI command to transition ResourceManager "rm1" to Active:
yarn rmadmin -transitionToActive rm1
You can use the following CLI command to transition ResourceManager "rm1" to Standby mode:
yarn rmadmin -transitionToStandby rm1
AUTOMATIC FAILOVER: If you configured automatic ResourceManager failover, no action is required -- the Active ResourceManager will be chosen automatically.
- Start all remaining unstarted cluster services.