注：安装之前关闭防火墙

1、关闭防火墙

（1）、防火墙状态的查看

命令：systemctl status firewalld

（2）、关闭防火墙

命令：systemctl stop firewalld

（3）、设置开机防火墙不启动

命令：systemctl disable firewalld

2、将zookeeper安装包拉到/opt/software/文件夹中

安装包版本：apache-zookeeper-3.5.7-bin.tar.gz

3、解压zookeeper安装包到/opt/module/文件夹下

命令：

cd /opt/software/
tar -zxvf 安装包名 -C  /opt/module/ 

4、在解压后的zookeeper文件下，创建log文件夹和data文件夹

命令：cd /opt/module/apache-zookeeper-3.5.7-bin/

创建命令：

mkdir data
mkdir log

4、 拷贝配置文件，命令：

cd /opt/module/apache-zookeeper-3.5.7-bin/conf/
cp zoo_sample.cfg zoo.cfg
在此路径下，将zoo_sample.cfg文件拷贝一份并重命名为zoo.cfg

5、进行配置文件更改，命令：

vi zoo.cfg
在页面中添加如下内容

# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial 
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just 
# example sakes.
dataDir=/opt/module/apache-zookeeper-3.5.7-bin/data
dataLogDir=/opt/module/apache-zookeeper-3.5.7-bin/log
# the port at which the clients will connect
clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the 
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1
server.0=192.168.1.100:2888:3888
server.1=192.168.1.101:2888:3888
server.2=192.168.1.102:2888:3888

6、创建服务器myid

命令：

cd /opt/module/apache-zookeeper-3.5.7-bin/data/
 
touch myid

7、集群拷贝

命令：

scp -r /opt/module/apache-zookeeper-3.5.7-bin root@hadoop101:/opt/module/apache-zookeeper-3.5.7-bin
 
将Hadoop100/opt/module/apache-zookeeper-3.5.7-bin里面的文件拷贝到Hadoop101/opt/module/apache-zookeeper-3.5.7-bin里面
 
scp -r /opt/module/apache-zookeeper-3.5.7-bin root@hadoop102:/opt/module/apache-zookeeper-3.5.7-bin
 
将Hadoop100/opt/module/apache-zookeeper-3.5.7-bin里面的文件拷贝到Hadoop102/opt/module/apache-zookeeper-3.5.7-bin里面 

8、集群myid更改

进入每个节点进行更改：

命令：cd /opt/module/apache-zookeeper-3.5.7-bin/data/

Hadoop100的myid，改成0

命令：touch myid

Hadoop101的myid，改成1

Hadoop102的myid，改成2

9、添加系统环境变量

命令：vi /etc/profile

 在页面中添加如下内容

export ZOOKEEPER_HOME=/opt/module/apache-zookeeper-3.5.7-bin
export PATH=$PATH:$ZOOKEEPER_HOME/bin

10、zookeeper集群启动，每个节点都要启动

命令：cd /opt/module/apache-zookeeper-3.5.7-bin

启动命令：（在100、101、102里面都要启动）

zkServer.sh start
zkServer.sh status
依次启动

 11、zkCli连接验证

命令：zkCli.sh -server hadoop100:2181

按Ctrl+Z停止运行

用jps查看出现ZooKeeperMain进程

出现QuorumPeerMain则说明zookeeper启动成功