1）配置JDK文件

mkdir /usr/java
tar -xf /data/src/jdk-8u201-linux-x64.tar.gz -C /usr/java
ln -s /usr/java/jdk1.8.0_201/ /usr/java/jdk

2) 添加环境变量

vim /etc/profile
export JAVA_HOME=/usr/java/jdk
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

检查版本

source /etc/profile
java -version

3）安装zookeeper

wget http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.4.14/zookeeper-3.4.14.tar.gz
tar -xf /data/src/zookeeper-3.4.14.tar.gz -C /opt/
ln -s /opt/zookeeper-3.4.14/ /opt/zookeeper
mkdir -pv /data/zookeeper/data /data/zookeeper/logs

4) 配置ZK文件

4.1 单机集群

cat >>/opt/zookeeper/conf/zoo.cfg<<EOF
# 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.
dataDir=/data/zookeeper/data
dataLogDir=/data/zookeeper/logs
# the port at which the clients will connect
clientPort=2181
ROF

4.2 多台集群

cat >>/opt/zookeeper/conf/zoo.cfg<<EOF
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/data/zookeeper/data
dataLogDir=/data/zookeeper/logs
clientPort=2181
server.1=192.168.100.101:2888:3888  
server.2=192.168.100.102:2888:3888  
server.3=192.168.100.103:2888:3888
EOF

5）启动zk服务

scp /data/zookeeper/data/myid root@192.168.100.10X:/data/zookeeper/data/
/opt/zookeeper/bin/zkServer.sh start
    ZooKeeper JMX enabled by default
    Using config: /opt/zookeeper/bin/../conf/zoo.cfg
    Starting zookeeper ... STARTED
/opt/zookeeper/bin/zkServer.sh status

6）检查Zookeeper默认端口

ps aux|grep zookeeper
yum install -y net-tools
netstat -lutnp|grep 2181

7) 检查ZK状态

[root@ZK01 ~]# /opt/zookeeper/bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper/bin/../conf/zoo.cfg
Mode: leader

提示：status 时候提示：Error contacting service. It is probably not running，可能是机器网络互通问题，需要等待一会就好了