Zookeeper3.6.3集群搭建教程（附群起脚本）

1. 环境准备2. 部署安装3. 群起脚本

官网下载地址：https://www.apache.org/dyn/closer.cgi/zookeeper/三台CentOS7虚拟机自备JDK 2. 部署安装

上传安装包到虚拟机
tar -zxvf apache-zookeeper-3.6.3-bin.tar.gz -C /data/解压mv apache-zookeeper-3.6.3-bin zookeeper-3.6.3/修改安装包名称进入安装目录，创建zkdata目录，创建myid

cd /data/zookeeper-3.6.3/
mkdir zkdata
cd zkdata/
echo 1 > myid

修改配置文件，添加对应配置信息

cd /data/zookeeper-3.6.3/conf/
cp zoo_sample.cfg zoo.cfg
vim zoo.cfg
# 修改以下内容：
dataDir=/data/zookeeper-3.6.3/zkdata
# 添加以下内容：
server.1=192.168.68.121:2888:3888
server.2=192.168.68.122:2888:3888
server.3=192.168.68.123:2888:3888

分发安装包到另外两台机器

scp -r zookeeper-3.6.3 hadoop@192.168.68.122:/$PWD
scp -r zookeeper-3.6.3 hadoop@192.168.68.123:/$PWD

修改另外两台机器的myid文件，192.168.68.122修改为2，192.168.68.123修改为3

vim /data/zookeeper-3.6.3/zkdata/myid

三台依次sudo vim /etc/profile添加环境变量，然后source /etc/profile加载环境变量

#ZOOKEEPER_HOME
export ZOOKEEPER_HOME=/data/zookeeper-3.6.3
export PATH=$PATH:$ZOOKEEPER_HOME/bin

依次启动三台zookeeper

cd /data/zookeeper-3.6.3/bin/
zkServer.sh start

查看集群状态zkServer.sh status

群起脚本需要配置SSH免密登录，我的这篇博客里有免密登录的教程：Hadoop3.x在centos上的完全分布式部署，就不细说了vim start_cluster.sh添加以下内容

#!/bin/bash

if [ $# -lt 1 ]
then
    echo "No Args Input..."
    exit ;
fi

case $1 in
"start")
        echo " =================== 启动 zookeeper集群 ==================="

        echo " --------------- 启动 hadoop121 ---------------"
        ssh 192.168.68.121 "/data/zookeeper-3.6.3/bin/zkServer.sh start"
        echo " --------------- 启动 hadoop122 ---------------"
        ssh 192.168.68.122 "/data/zookeeper-3.6.3/bin/zkServer.sh start"
        echo " --------------- 启动 hadoop123 ---------------"
        ssh 192.168.68.123 "/data/zookeeper-3.6.3/bin/zkServer.sh start"
;;
"stop")
        echo " =================== 关闭 zookeeper集群 ==================="

        echo " --------------- 关闭 hadoop121 ---------------"
        ssh 192.168.68.121 "/data/zookeeper-3.6.3/bin/zkServer.sh stop"
        echo " --------------- 关闭 hadoop122 ---------------"
        ssh 192.168.68.122 "/data/zookeeper-3.6.3/bin/zkServer.sh stop"
        echo " --------------- 关闭 hadoop123 ---------------"
        ssh 192.168.68.123 "/data/zookeeper-3.6.3/bin/zkServer.sh stop"
;;
"status")
		echo " =================== 查看 zookeeper集群状态 ==================="

		echo " --------------- hadoop121状态 ---------------"
        ssh 192.168.68.121 "/data/zookeeper-3.6.3/bin/zkServer.sh status"
        echo " --------------- hadoop122状态 ---------------"
        ssh 192.168.68.122 "/data/zookeeper-3.6.3/bin/zkServer.sh status"
        echo " --------------- hadoop123状态 ---------------"
        ssh 192.168.68.123 "/data/zookeeper-3.6.3/bin/zkServer.sh status"
;;
*)
    echo "Input Args Error..."
;;
esac

chmod +x start_cluster.sh，赋予脚本执行权限执行测试