Centos7安装Zookeeper3.7.0集群版

一、安装单机版

参考单机版安装：https://blog.youkuaiyun.com/qq_42357846/article/details/120835951?spm=1001.2014.3001.5501

二、集群部署

1. 创建zookeeper节点的身份标识

[root@afanty100 zookeeper-3.7.0]# vim /usr/local/zookeeper-3.7.0/data/myid

2. 修改zk配置文件中集群节点信息

[root@afanty zookeeper-3.7.0]# vim /usr/local/zookeeper-3.7.0/conf/zoo.cfg

server.A=B:C:D
A：节点中myid的值
B：节点的主机地址
C：当前节点Follower与集群中的Leader服务器交换信息的端口
D：万一集群中的Leader服务器挂了，需要一个端口来重新进行选举

3. 复制以上配置到其他节点即可

三、集群启动脚本

#!/bin/bash

case $1 in
"start"){
    for i in 192.168.30.101 192.168.30.102 192.168.30.103
        do
            echo ----------- zookeeper $i 启动 -----------
            ssh $i "/usr/local/zookeeper-3.7.0/bin/zkServer.sh start"
            echo 
        done
}
;;
"stop"){
    for i in 192.168.30.101 192.168.30.102 192.168.30.103
        do
            echo ----------- zookeeper $i 停止 -----------
            ssh $i "/usr/local/zookeeper-3.7.0/bin/zkServer.sh stop"
            echo
        done
}
;;
"status"){
    for i in 192.168.30.101 192.168.30.102 192.168.30.103
        do
            echo ----------- zookeeper $i 状态 -----------
            ssh $i "/usr/local/zookeeper-3.7.0/bin/zkServer.sh status"
            echo 
        done
}
;;
esac

[root@afanty bin]# chmod 777 zk.sh

四、启动报错

1. “Error: JAVA_HOME is not set and java could not be found in PATH.”
   解决方案：在bin目录下的zkEnv.sh内指定JAVA_HOME路径