shell脚本（1）--一键启动zookeeper

一键启动三个节点（hadoop11，hadoop12，hadoop13）zookeeper

#! /bin/bash

if [ $# -eq 0 ]
then
  echo '没有提供参数 start | stop | status'
  exit
fi

function start(){
	for i in 11 12 13
	do
	  echo --------------- hadoop$i -----------
	  ssh root@hadoop$i "source /etc/profile;zkServer.sh start"
	done
}

function stop(){
	for i in 11 12 13
	do
	  echo --------------- hadoop$i -----------
	  ssh root@hadoop$i "source /etc/profile;zkServer.sh stop"
	done
}

function status(){
	for i in 11 12 13
	do
	  echo --------------- hadoop$i -----------
	  ssh root@hadoop$i "source /etc/profile;zkServer.sh status"
	done
}

if [ "$1" = "start" ]; then
  start
elif [ "$1" = "stop" ]; then
  stop
elif [ "$1" = "status" ]; then
  status
else
  echo "Usage: $0 [start|stop|status]"
  exit 1
fi