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ZooKeeper伪分布式部署及真分布式环境部署步骤

搭建之前,先自行下载安装文件,配置hosts文件等操作。

  • 下载页面:http://zookeeper.apache.org/releases.html,下载apache-zookeeper-3.7.0-bin.tar.gz文件;
  • 配置/etc/hosts文件,添加127.0.0.1 master映射;

一、伪分布式部署

1.1创建三个数据目录

mkdir -p /home/michael/data/zk1
mkdir -p /home/michael/data/zk2
mkdir -p /home/michael/data/zk3

1.2查看zookeeper示例配置文件

[[email protected] conf]$ cat zoo_sample.cfg |grep -v ^# | grep -v ^$
#session的会话时间 以ms为单位
tickTime=2000
#服务器启动以后,master和slave通讯的时间
initLimit=10
#master和slave之间的心跳检测时间,检测slave是否存活
syncLimit=5
#保存zk的快照和数据
dataDir=/tmp/zookeeper
#客户端访问zk的端口
clientPort=2181

1.3将zoo_sample.cfg重命名为zoo1.cfg并更改配置

编辑配置文件时可以使用:set list显示隐藏字符,避免配置有误,参考:zookeeper启动报错:Address unresolved

[[email protected] conf]$ mv ./zoo_sample.cfg ./zoo1.cfg

更改配置:

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/home/michael/data/zk1

#客户端访问zk的端口
clientPort=2181

#"server.1"中的1,即是该机器在数据文件夹中配置的myid,master对应于前面在hosts里面配置的主机映射 2888是数据同步和消息传递端口,3888是选举端口
server.1=master:2888:3888 
server.2=master:2889:3889 
server.3=master:2890:3890

1.4将zoo1.cfg复制一份为zoo2.cfg并更改配置

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/home/michael/data/zk2

#客户端访问zk的端口
clientPort=2182

server.1=master:2888:3888 
server.2=master:2889:3889 
server.3=master:2890:3890

1.5将zoo1.cfg复制一份为zoo3.cfg并更改配置

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/home/michael/data/zk3

#客户端访问zk的端口
clientPort=2183

server.1=master:2888:3888 
server.2=master:2889:3889 
server.3=master:2890:3890

1.6手动建立myid文件且指定在zk数据目录,也就是dataDir指定的路径(不管真分布还是伪分布都需要指定)

echo 1 >> /home/michael/data/zk1/myid

echo 2 >> /home/michael/data/zk2/myid

echo 3 >> /home/michael/data/zk3/myid

1.7启动并测试zookeeper分布式是否搭建成功

分别启动三个zookeeper:

cd /home/michael/apache-zookeeper-3.7.0-bin/bin

[[email protected] bin]$ ./zkServer.sh start /home/michael/apache-zookeeper-3.7.0-bin/conf/zoo1.cfg 
ZooKeeper JMX enabled by default
Using config: /home/michael/apache-zookeeper-3.7.0-bin/conf/zoo1.cfg
Starting zookeeper ... STARTED
[[email protected] bin]$ ./zkServer.sh start /home/michael/apache-zookeeper-3.7.0-bin/conf/zoo2.cfg 
ZooKeeper JMX enabled by default
Using config: /home/michael/apache-zookeeper-3.7.0-bin/conf/zoo2.cfg
Starting zookeeper ... STARTED
[[email protected] bin]$ ./zkServer.sh start /home/michael/apache-zookeeper-3.7.0-bin/conf/zoo3.cfg 
ZooKeeper JMX enabled by default
Using config: /home/michael/apache-zookeeper-3.7.0-bin/conf/zoo3.cfg
Starting zookeeper ... STARTED

查看服务状态:

[[email protected] bin]$ ./zkServer.sh status /home/michael/apache-zookeeper-3.7.0-bin/conf/zoo1.cfg 
ZooKeeper JMX enabled by default
Using config: /home/michael/apache-zookeeper-3.7.0-bin/conf/zoo1.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: follower
[[email protected] bin]$ 
[[email protected] bin]$ 
[[email protected] bin]$ ./zkServer.sh status /home/michael/apache-zookeeper-3.7.0-bin/conf/zoo2.cfg 
ZooKeeper JMX enabled by default
Using config: /home/michael/apache-zookeeper-3.7.0-bin/conf/zoo2.cfg
Client port found: 2182. Client address: localhost. Client SSL: false.
Mode: leader
[[email protected] bin]$ 
[[email protected] bin]$ 
[[email protected] bin]$ ./zkServer.sh status /home/michael/apache-zookeeper-3.7.0-bin/conf/zoo3.cfg
ZooKeeper JMX enabled by default
Using config: /home/michael/apache-zookeeper-3.7.0-bin/conf/zoo3.cfg
Client port found: 2183. Client address: localhost. Client SSL: false.
Mode: follower 

1.8常用命令

启动:
./zkServer.sh start /path/to/your/config/file/zoo1.cfg

停止:
./zkServer.sh stop /path/to/your/config/file/zoo1.cfg

查看状态:
./zkServer.sh status /path/to/your/config/file/zoo1.cfg

二、Zookeeper真分布式部署在master、slave1、slave2 三台不同的服务器上

2.1 master服务器配置文件

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/home/michael/data/zk

#客户端访问zk的端口
clientPort=2181

server.1=master:2888:3888 
server.2=slave1:2888:3888
server.3=slave2:2888:3888

2.2 slave1服务器配置文件

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/home/michael/data/zk

#客户端访问zk的端口
clientPort=2181

server.1=master:2888:3888 
server.2=slave1:2888:3888
server.3=slave2:2888:3888

2.3 slave2服务器配置文件

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/home/michael/data/zk

#客户端访问zk的端口
clientPort=2181

server.1=master:2888:3888 
server.2=slave1:2888:3888
server.3=slave2:2888:3888

References

  1. Zookeeper系列一:Zookeeper介绍、Zookeeper安装配置、ZK Shell的使用
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