1准备奇数台机子3，5，7   

  我准备的是三台

192.168.58.81  zookeeper-1

192.168.58.82  zookeeper-2

192.168.58.83  zookeeper-3

下载jdk  把他配置环境变量并检查是否是环境变量  echo $JAVA_HOME

cd /opt/software 


wget http://mirrors.hust.edu.cn/apache/zookeeper/zookeeper-3.4.13/zookeeper-3.4.13.tar.gz



tar -xzvf apache-zookeeper-3.6.2-bin.tar.gz  -C  /usr/



mv /usr/apache-zookeeper-3.6.2-bin/  /usr/zookeeper



cd /usr/zookeeper/



vim /etc/profile
   
         

source /etc/profile


echo $ZK_HOME


cp conf/zoo_sample.cfg  conf/zoo.cfg


vim conf/zoo.cfg


最后一行加
 server.1=zookeeper-1:2888:3888
 server.2=zookeeper-2:2888:3888
 server.3=zookeeper-3:2888:3888
保存退出

mkdir /usr/zookeeper/data

vi /etc/hosts
  最后一行添加
192.168.58.81 zookeeper-1
192.168.58.82 zookeeper-2
192.168.58.83 zookeeper-3
保存退出



vim /usr/zookeeper/data/myid
   添加数字
    1
   保存退出

 2 准备发射

#生成公钥私钥
ssh-keygen -t rsa
回车回车回车 
cd  /root/

ls .ssh 
能看到 id_rsa  id_rsa.pub


将你的 SSH 公钥添加到名为 zookeeper-1 的远程服务器上
ssh-copy-id zookeeper-1       
yes
ssh-copy-id zookeeper-2
yes
ssh-copy-id zookeeper-3
yes



scp  -r   /usr/zookeeper/ zookeeper-2:/usr/
scp  -r   /usr/zookeeper/ zookeeper-3:/usr/


scp /etc/hosts zookeeper-2:/etc/
scp /etc/hosts zookeeper-3:/etc/


scp /etc/profile zookeeper-2:/etc/
scp /etc/profile zookeeper-3:/etc/

3 发射完毕

改zookeeper-2里面的配置

source /etc/profile   让刚发射的环境变量文件生效

vim  /usr/zookeeper/data/myid       从zookeeper-1发射过来的刚才配的数字是1改称2

改zookeeper-3里面的配置

source /etc/profile

vim  /usr/zookeeper/data/myid       从zookeeper-1发射过来的刚才配的数字是1改称3

再zookeeper-1 zookeeper-2 zookeeper-3  启动zookeeper

zkServer.sh start  zkServer.sh start   zkServer.sh start

zkServer.sh status  zkServer.sh status zkServer.sh status

按顺序启动1，2，3 可以看到zookeeper-2是leader ，1,3  follower

   

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4 脚本

一台一台启动太麻烦搞个zookeeper启动关闭脚本

mkdir shell   && cd shell    &&  vim zookeeper-start-stop.sh

#!/bin/bash
##获取当前主机运行的zk进程的数量 
#                                            zookeeper主机名字不带后面的数字
zkpsnum=`ps -ef | grep zookeeper-root-server-zookeeper | grep -v grep|wc -l`
#判断进程数量
if [ $zkpsnum == 0 ];then
  #打印提示
  echo 'zk集群开始启动!'
   #使用for循环启动各个服务器
   for i in {1..3};do
    #远程登录服务器执行命令source /etc/profile;让环境变量生效
        ssh zookeeper-$i "source /etc/profile;zkServer.sh start"
   done
  echo 'zk集群启动完毕!'
  echo 'zk集群状态如下:'
  #使用for循环查看状态
  for i in {1..3};do
     #远程登录服务器执行命令source /etc/profile;让环境变量生效
      ssh zookeeper-$i "source /etc/profile;zkServer.sh status"
  done

else
  echo 'zk集群开始关闭!!!!!!!!!!!!!!!'
  #使用for循环查看状态
    for i in {1..3};do
 #远程登录服务器执行命令source /etc/profile;让环境变量生效
    ssh zookeeper-$i "source /etc/profile;zkServer.sh stop"
    done

   echo 'zk集群关闭完毕!'
fi

chmod +x  zookeeper-start-stop.sh