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Once all the necessary configuration is complete, distribute the files to theHADOOP_CONF_DIRdirectory on all the machines.
Hadoop Startup
To start a Hadoop cluster you will need to start both the HDFS and YARN cluster.
Format a new distributed filesystem:
$ $HADOOP_PREFIX/bin/hdfs namenode -format <cluster_name>
Start the HDFS with the following command, run on the designated NameNode:
$ $HADOOP_PREFIX/sbin/hadoop-daemon.sh --config $HADOOP_CONF_DIR --script hdfs start namenode
Run a script to start DataNodes on all slaves:
$ $HADOOP_PREFIX/sbin/hadoop-daemon.sh --config $HADOOP_CONF_DIR --script hdfs start datanode
Start the YARN with the following command, run on the designated ResourceManager:
$ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR start resourcemanager
Run a script to start NodeManagers on all slaves:
$ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR start nodemanager
Start a standalone WebAppProxy server. If multiple servers are used with load balancing it should be run on each of them:
$ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh start proxyserver --config $HADOOP_CONF_DIR
Start the MapReduce JobHistory Server with the following command, run on the designated server:
$ $HADOOP_PREFIX/sbin/mr-jobhistory-daemon.sh start historyserver --config $HADOOP_CONF_DIR
Hadoop Shutdown
Stop the NameNode with the following command, run on the designated NameNode:
$ $HADOOP_PREFIX/sbin/hadoop-daemon.sh --config $HADOOP_CONF_DIR --script hdfs stop namenode
Run a script to stop DataNodes on all slaves:
$ $HADOOP_PREFIX/sbin/hadoop-daemon.sh --config $HADOOP_CONF_DIR --script hdfs stop datanode
Stop the ResourceManager with the following command, run on the designated ResourceManager:
$ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR stop resourcemanager
Run a script to stop NodeManagers on all slaves:
$ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR stop nodemanager
Stop the WebAppProxy server. If multiple servers are used with load balancing it should be run on each of them:
$ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh stop proxyserver --config $HADOOP_CONF_DIR
Stop the MapReduce JobHistory Server with the following command, run on the designated server:
$ $HADOOP_PREFIX/sbin/mr-jobhistory-daemon.sh stop historyserver --config $HADOOP_CONF_DIR