hadoop群起群停脚本

#!/usr/bin/bash
echo "群起，群停"
order=$1

if [ $order = "clear" ] ;then
		hadoop-daemon.sh stop namenode
		hadoop-daemon.sh stop datanode
		hadoop-daemon.sh stop secondarynamenode
		yarn-daemon.sh stop nodemanager
		yarn-daemon.sh stop resourcemanager
		ssh liu2 hadoop-daemon.sh stop namenode
		ssh liu2 hadoop-daemon.sh stop datanode
		ssh liu2 hadoop-daemon.sh stop secondarynamenode
		ssh liu2 yarn-daemon.sh stop nodemanager
		ssh liu2 yarn-daemon.sh stop resourcemanager
elif [ $order = "start" ] ;then
		hadoop-daemon.sh start namenode
		hadoop-daemon.sh start datanode
		yarn-daemon.sh start nodemanager	
		ssh liu2 hadoop-daemon.sh start secondarynamenode
		ssh liu2 hadoop-daemon.sh start datanode
		ssh liu2 yarn-daemon.sh start nodemanager
		ssh liu2 yarn-daemon.sh start resourcemanager
else
		echo "都不是啊"
fi

#遍历 包含liu liu2这两个字符串的数组
for i in liu liu2
do
		echo "========"$i"=============="
		ssh $i jps #让每台主机执行jps，并输出
done