mkdir -p /opt/zookeeper
 wget http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.4.12/zookeeper-3.4.12.tar.gz
tar    -zxvf    zookeeper-3.4.12.tar.gz
cd zookeeper-3.4.12
 cd conf
cp zoo_sample.cfg  zoo.cfg
2.4启动zookeeper

  进入到zookeeper的bin目录下，命令：

         cd    /opt/zookeeper/zookeeper-3.4.12/bin

执行zkServer.sh脚本进行启动，命令是：

        ./zkServer.sh   start
3将ZooKeeper设置为开机启动(可选)
3.1在init.d目录下新建脚本文件
    进入到/etc/rc.d/init.d目录下，命令是：

          cd    /etc/rc.d/init.d

   新建一个名为zookeeper的文件，命令是：

touch    zookeeper
vi zookeeper
=============
		#!/bin/bash
		#chkconfig: 2345 10 90
		#description: service zookeeper
		export   JAVA_HOME=/opt/java/jdk1.8.0_121
		export   ZOO_LOG_DIR=/opt/zookeeper/log
		ZOOKEEPER_HOME=/opt/zookeeper/zookeeper-3.4.10
		su    root    ${ZOOKEEPER_HOME}/bin/zkServer.sh      "$1"
=============

  chmod  +x  /etc/rc.d/init.d/zookeeper
  chkconfig  --add   zookeeper
  chkconfig  --list