hadoop集群启动脚本

#!/bin/bash
case $1 in
"start")
echo "————————————启动 hadoop 集群————————"
ssh hadoop106 "/opt/module/hadoop/sbin/start-dfs.sh"
ssh hadoop107 "/opt/module/hadoop/sbin/start-yarn.sh"
;;
"stop")
echo "—————————关闭 Hadoop 集群———————————"
ssh hadoop106 "/opt/module/hadoop/sbin/stop-dfs.sh"
ssh hadoop107 "/opt/module/hadoop/sbin/stop-yarn.sh"
;;
esac

在 /opt/module/hadoop/etc/hadoop/hadoop-env.sh 里添加

export HDFS_NAMENODE_USER=root
export HDFS_DATANODE_USER=root
export HDFS_SECONDARYNAMENODE_USER=root
export YARN_RESOURCEMANAGER_USER=root
export YARN_NODEMANAGER_USER=root