zookeeper集群批量启动脚本

vi zk.sh

#!/bin/bash

#1 获取输入参数个数，如果没有参数，直接退出
pcount=$#
if((pcount==0)); then
echo no args;
exit;
fi

for((i=2;i<5;i++));do
echo ---------hadoop-0$i-----------
echo ---------zookeeper-$1---------
ssh hadoop-0$i "/home/hadoop/software/zookeeper-3.4.12/bin/zkServer.sh $1"

done

sleep 2

for ((i=2;i<5;i++));do
echo ---------hadoop-0$i-----------
#显示zookeeper启动后的状态（充当角色是leader还是follower）
ssh hadoop-0$i "/home/hadoop/software/zookeeper-3.4.12/bin/zkServer.sh status"
done

设置用户权限
chmod a+x zk.sh
启动命令
./zk.sh start
./zk.sh stop

第二种写法

#! /bin/bash

case $1 in
"start"){
	for i in hadoop102 hadoop103 hadoop104
```	do
		ssh $i "/opt/module/zookeeper-3.4.10/bin/zkServer.sh start"
	done
};;
"stop"){
	for i in hadoop102 hadoop103 hadoop104
	do
		ssh $i "/opt/module/zookeeper-3.4.10/bin/zkServer.sh stop"
	done
};;
"status"){
	for i in hadoop102 hadoop103 hadoop104
	do
		ssh $i "/opt/module/zookeeper-3.4.10/bin/zkServer.sh status"
	done
};;
esac