linux centos 7.2 安装zookeeper3.4.14集群
学习zookeeper集群安装,以备后续使用:
环境准备
操作系统:CentOS Linux release 7.2.1511 (Core)
JDK版本:1.8.0_121
三台服务器:10.8.7.32,10.8.7.33,10.8.7.34
下载zookeeper
下载地址:https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/
拷贝zookeeper
先创建/zookeeper3.4.14目录,然后利用WinSCP拷贝到该目录下
[[email protected] /]# mkdir /zookeeper3.4.14
解压zookeeper
[[email protected] /]# cd /usr/local/zookeeper3.4.14
[[email protected] zookeeper3.4.14]# tar zxvf zookeeper-3.4.14.tar.gz
配置zookeeper
1、 创建数据目录
下面zoo.cfg配置文件的dataDir将会修改为这个目录
[[email protected] zookeeper]# cd /usr/local/zookeeper3.4.14/zookeeper
[[email protected] zookeeper]# mkdir data
2、配置zoo.cfg
[[email protected] zookeeper]# cd conf
[[email protected] conf]# cp zoo_sample.cfg zoo.cfg
[[email protected] conf]# vi zoo.cfg
先把dataDir=/tmp/zookeeper注释,然后将下面四行代码添加到文件末尾
dataDir=/usr/local/zookeeper/data
server.1=10.8.7.32:2888:3888
server.2=10.8.7.33:2888:3888
server.3=10.8.7.34:2888:3888
拷贝zookeeper
拷贝zookeeper到另外两台机器
[[email protected] data]# scp -r /usr/local/zookeeper3.4.14 [email protected]:/usr/local/
[[email protected] data]#scp -r /usr/local/zookeeper3.4.14 [email protected]:/usr/local/
中间会要求输入密码,分别输入你另外两台机器的密码就行了
3、创建myid文件
[[email protected] conf]# cd ../data
[[email protected] data]# touch myid
[[email protected] data]# echo "1">>myid
修改myid文件
10.8.7.33的myid内容改为2
[[email protected] zookeeper]# cd /usr/local/zookeeper/data
[[email protected] data]# echo "2">myid
10.8.7.34的myid内容改为3
[[email protected] zookeeper]# cd /usr/local/zookeeper/data
[[email protected] data]# echo "3">myid
开启zookeeper端口
开启2888、3888、2181端口
[[email protected] data]# firewall-cmd --zone=public --add-port=2888/tcp --permanent
[[email protected] data]# firewall-cmd --zone=public --add-port=3888/tcp --permanent
[[email protected] data]# firewall-cmd --zone=public --add-port=2181/tcp --permanent
重启防火墙
[[email protected] data]# firewall-cmd --reload
启动zookeeper
1、启动(每台机器都要启动)
[[email protected] bin]# /usr/local/zookeeper/bin/zkServer.sh start
如果输出以下内容,表示启动成功
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
2、 查看状态
[[email protected] data]# /usr/local/zookeeper/bin/zkServer.sh status
192.168.1.91
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Mode: follower
192.168.1.92
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Mode: leader
192.168.1.93
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Mode: follower
由此我们看出192.168.1.92这台机器被自动选举为leader了
客户端连接成功
zkCli.sh -server 10.8.7.33:2181