ZooKeeper集群搭建步骤

一、准备虚拟机

准备三台虚拟机，对应ip地址和主机名如下：

ip地址	Hostname
192.168.153.150	ant163
192.168.153.151	ant164
192.168.153.152	ant165

• 修改hostname，并使之生效

[root@localhost /]# hostnamectl set-hostname zookeeper1  //修改hostname
[root@localhost /]# hostname                             //查看hostname
[root@localhost /]# bash                                 //刷新

• 进入/etc/sysconfig/network-scripts/ifcfg-ens33目录下修改网络信息

• 重启网络服务

systemlctl restart network.service
service network restart

• 测试ping

成功连接XShell

【注】这里可能由于内存不够导致无法创建新虚拟机。关闭虚拟机需要使用shutdown命令，不能直接使用可视化关闭。

二、安装配置zookeeper

添加压缩包，压缩包我放在/opt/install下面。

链接: https://pan.baidu.com/s/1FWn0t095KxoSz3PaKteHZw 提取码: 4ew2 复制这段内容后打开百度网盘手机App，操作更方便哦

• 添加主机hosts

# 添加hosts
[root@hadoop02 ~]# vim /etc/hosts     # 添加IP地址和主机名
192.168.153.150 ant163
192.168.153.151 ant164
192.168.153.152 ant165

尝试连接，可以ping通

• 将hosts文件拷贝到其他两台主机上

[root@hadoop02 ~]# scp  /etc/hosts root@ant164:/etc/
[root@hadoop02 ~]# scp  /etc/hosts root@ant165:/etc/

打开另一台机器，成功拷贝

• 设置免密登录

进入家目录，进入.ssh目录下

# 设置免密登录
[root@hadoop02 .ssh]# ssh-keygen -t rsa -P ''# 将公钥追加到authorized_keys文件中
[root@hadoop02 .ssh]# cat /root/.ssh/id_rsa.pub >> ./authorized_keys # 将当前公钥拷贝到ant164公钥中
[root@hadoop02 .ssh]# ssh-copy-id -i ./id_rsa.pub -p22 root@ant164
[root@hadoop02 .ssh]# ssh-copy-id -i ./id_rsa.pub -p22 root@ant165

查看id_rsa.pub公钥

查看备付公钥：

# 测试免密登录是否成功
[root@hadoop02 .ssh]# ssh -p22 root@ant163
[root@hadoop02 .ssh]# ssh -p22 root@ant164
[root@hadoop02 .ssh]# ssh -p22 root@ant165

• 将zookeeper压缩包分配到其他两台主机上

[root@ant163 .ssh]# scp /opt/install/zookeeper-3.4.5-cdh5.14.2.tar.gz root@ant164:/opt/install/
[root@ant163 .ssh]# scp /opt/install/zookeeper-3.4.5-cdh5.14.2.tar.gz root@ant165:/opt/install/

• 在ant163上安装脚本文件

#! /bin/bash
echo 'auto install begining....'#global var
hostname=`hostname`jdk=false
hadoop=false
zk=true# JAVA_HOME
if [ "$jdk" = true ];thenecho 'jdk install set true'echo 'setup jdk-8u321-linux-x64.tar.gz'tar -zxf /opt/install/jdk-8u321-linux-x64.tar.gz -C /opt/soft/mv /opt/soft/jdk1.8.0_321 /opt/soft/jdk180sed -i '73a\export PATH=$PATH:$JAVA_HOME/bin' /etc/profilesed -i '73a\export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar' /etc/profilesed -i '73a\export JAVA_HOME=/opt/soft/jdk180' /etc/profilesed -i '73a\#jdk' /etc/profileecho 'setup jdk 8 success!!!'
fi#ZK_HOME
if [ "$zk" = true ];thenecho 'zookeeper install set true'echo 'setup zookeeper-3.4.5-cdh5.14.2.tar.gz'tar -zxf /opt/install/zookeeper-3.4.5-cdh5.14.2.tar.gz -C /opt/soft/mv /opt/soft/zookeeper-3.4.5-cdh5.14.2 /opt/soft/zk345cp /opt/soft/zk345/conf/zoo_sample.cfg /opt/soft/zk345/conf/zoo.cfgmkdir -p /opt/soft/zk345/datassed -i '12c dataDir=/opt/soft/zk345/datas' /opt/soft/zk345/conf/zoo.cfgecho "server.0=$hostname:2287:3387" >> /opt/soft/zk345/conf/zoo.cfgecho "0" > /opt/soft/zk345/datas/myidsed -i '73a\export PATH=$PATH:$ZOOKEEPER_HOME/bin' /etc/profilesed -i '73a\export ZOOKEEPER_HOME=/opt/soft/zk345' /etc/profilesed -i '73a\#ZK' /etc/profile# 刷新系统配置文件source /etc/profileecho 'setup zookeeper success!!!'
fi

• 开启进程

# 进入到zookeeper/bin目录下
[root@ant163 bin]# ./zkServer.sh start

显示上面进程，表示zookeeper运行。

三台主机分别start，查看status

• 启动/关闭所有zookeeper/查看所有zookeeper状态

[root@ant151 shell]# ./zkop.sh start

#! /bin/bash
case $1 in 
"start"){for i in ant151 ant152 ant153 dossh $i "/opt/soft/zk345/bin/zkServer.sh start "done
};;
"stop"){for i in ant151 ant152 ant153 dossh $i "/opt/soft/zk345/bin/zkServer.sh stop "done
};;
"status"){for i in ant151 ant152 ant153 dossh $i "/opt/soft/zk345/bin/zkServer.sh status "done
};;
esac

• 查看所有zookeeper服务启动情况

[root@ant163 .ssh]# ./showalljps.sh

# showalljps.sh
#! /bin/bash
for i in ant151 ant152 ant153 ant154
doecho ---------- $i 服务启动状态 -------------ssh $i "$* "
done