环境

• 机器环境

• 环境配置

配置免密以及修改hosts

没有其他说明均在node1进行

ssh-keygen -t rsa

ssh-copy-id root@192.168.31.202
ssh-copy-id root@192.168.31.203

配置主机的hostname

node1
hostnamectl set-hostname node1

node2、3
ssh root@192.168.31.202 hostnamectl set-hostname node2
ssh root@192.168.31.203 hostnamectl set-hostname node3

所有的机器添加下列的内容

vim /etc/hosts
node1   192.168.31.201
node2   192.168.31.202
node3   192.168.31.203

JDK的安装

rpm -ivh jdk-8u321-linux-x64.rpm

ssh root@node2 rpm -ivh jdk-8u321-linux-x64.rpm
ssh root@node3 rpm -ivh jdk-8u321-linux-x64.rpm

java -version

[root@node1]# java -version
java version "1.8.0_321"w
Java(TM) SE Runtime Environment (build 1.8.0_321-b07)
Java HotSpot(TM) 64-Bit Server VM (build 25.321-b07, mixed mode)

下载zookeeper

wget https://dlcdn.apache.org/zookeeper/zookeeper-3.8.0/apache-zookeeper-3.8.0-bin.tar.gz

解压zookeeper

mkdir -p /usr/local/zookeeper
tar -zxvf apache-zookeeper-3.8.0-bin.tar.gz -C /usr/local/zookeeper
cd /usr/local/zookeeper/apache-zookeeper-3.8.0-bin
mv /bin/ conf/ docs/ lib/ ../

添加环境变量

vi /etc/profile

export ZOOKEEPER_HOME=/usr/local/zookeeper
export PATH=$PATH:$ZOOKEEPER_HOME/bin

source /etc/profi

修改配置文件

cd /usr/local/zookeeper/conf/

cp -pr zoo_sample.cfg zoo.cfg

vim zoo.cfg

dataDir=/usr/local/logs/zookeeper
server.1=node1:2888:3888
server.2=node2:2888:3888
server.3=node3:2888:3888

1.修改日志存放目录
2.添加集群的配置 2888为心跳端口 3888选举端口

配置复制到node2 node3

复制node1的zookeerper的目录到node2 node3
scp -pr /usr/local/zookeeper root@node2:/usr/local/
scp -pr /usr/local/zookeeper root@node3:/usr/local/

note1
echo "1" > /usr/local/logs/zookeeper/myid

node2添加下列配置
echo "2" > /usr/local/logs/zookeeper/myid

node3添加下列配置
echo "3" > /usr/local/logs/zookeeper/myid

所有机器启动zookeeper

cd /usr/local/zookeeper/bin
sh zkServer.sh start

[root@node2 ~]# cd /usr/local/zookeeper/bin
[root@node2 bin]# sh zkServer.sh start
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

使用方法

JPS查看进程

[root@node1 ~]# ssh root@node1 jps
2617 QuorumPeerMain
64316 Jps

[root@node1 ~]# ssh root@node2 jps
60581 QuorumPeerMain
60684 Jps

[root@node1 ~]# ssh root@node3 jps
59216 QuorumPeerMain
59297 Jps

查看2181进程端口

[root@node1 ~]# netstat -nltp | grep 2181
tcp6       0      0 :::2181                 :::*                    LISTEN      2617/java         

[root@node1 ~]# ssh root@node2 netstat -nltp | grep 2181
tcp6       0      0 :::2181                 :::*                    LISTEN      60581/java          

[root@node1 ~]# ssh root@node3 netstat -nltp | grep 2181
tcp6       0      0 :::2181                 :::*                    LISTEN      59216/java

测试进程是否同步

打开bin下的zkCli.sh

cd /usr/local/zookeeper/bin
sh zkCli.sh

node1创建test

[zk: localhost:2181(CONNECTED) 1] ls /
[zookeeper]
[zk: localhost:2181(CONNECTED) 2] create /test limitrinno
Created /test
[zk: localhost:2181(CONNECTED) 3] ls /
[test, zookeeper]
[zk: localhost:2181(CONNECTED) 4] 

node2查看有没有test

cd /usr/local/zookeeper/bin
sh zkCli.sh

[zk: localhost:2181(CONNECTED) 0] ls /
[test, zookeeper]
[zk: localhost:2181(CONNECTED) 1] 

node3查看有没有test

cd /usr/local/zookeeper/bin
sh zkCli.sh

[zk: localhost:2181(CONNECTED) 0] ls /
[test, zookeeper]
[zk: localhost:2181(CONNECTED) 1] 

集群完成

创建自启动

• vim /lib/systemd/system/zookeeper.service

[Unit]
Description=Zookeeper service
After=network.target

[Service]
Type=forking
Environment="PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/java/jdk1.8.0_321-amd64/bin/"
User=root
Group=root
ExecStart=/usr/local/zookeeper/bin/zkServer.sh start
ExecStop=/usr/local/zookeeper/bin/zkServer.sh stop
Restart=on-failure

[Install]
WantedBy=multi-user.target

systemctl daemon-reload
systemctl enable zookeeper
systemctl start zookeeper