接上篇文章centos7 zookeeper单点部署准备好zookeeper包，进行集群部署
单机伪集群部署
zookeeper1
zookeeper2
zookeeper3
三个目录分别部署一个服务。
cp -r apache-zookeeper-3.5.6-bin/ zookeeper1
cd zookeeper1/
mkdir data
vi conf/zoo.cfg
修改
dataDir=/opt/zookeeper1/data
添加
server.1=127.0.0.1:2281:2381
server.2=127.0.0.1:2282:2382
server.3=127.0.0.1:2293:2383
#注：此处server.x中的x代表data/myid中的内容，相当于每个节点分配一个唯一的id。
每一台一条数据。
ip后面的端口第一个用来集群成员的信息交换，第二个端口是在leader挂掉时专门用来进行选举leader所用。
cp -r zookeeper1/ zookeeper2
cp -r zookeeper1/ zookeeper3
vi zookeeper2/conf/zoo.cfg
修改
dataDir=/opt/zookeeper2/data
clientPort=2182
vi zookeeper3/conf/zoo.cfg
修改
dataDir=/opt/zookeeper3/data
clientPort=2183
vi zookeeper1/data/myid
添加内容
1
vi zookeeper2/data/myid
添加内容
2
vi zookeeper3/data/myid
添加内容
3
#注：此处myid中的值与配置中server.x中的x匹配
启动服务
zookeeper1/bin/zkServer.sh start
zookeeper2/bin/zkServer.sh start
zookeeper3/bin/zkServer.sh start
查看状态，如下3的Mode为leader，说明3为主节点，其他两个为follower从节点。
[root@localhost opt]# zookeeper1/bin/zkServer.sh status
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper1/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Mode: follower
[root@localhost opt]# zookeeper2/bin/zkServer.sh status
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper2/bin/../conf/zoo.cfg
Client port found: 2182. Client address: localhost.
Mode: follower
[root@localhost opt]# zookeeper3/bin/zkServer.sh status
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper3/bin/../conf/zoo.cfg
Client port found: 2183. Client address: localhost.
Mode: leader
netstat -tunlp看到2181-2183端口都被监听，使用bin/zkCli.sh -server 127.0.0.1:2181连接2182、2183也可以联通
