ZooKeeper教程(一)----Centos7下安装ZooKeeper(单机版)

﹏ヽ暗。殇╰゛Y 2022-06-12 13:11 204阅读 0赞

**1、下载源码**

官网下载地址: [http://mirrors.hust.edu.cn/apache/zookeeper/][http_mirrors.hust.edu.cn_apache_zookeeper] 选择最新的版本进行下载

![20170723221740796][]

这里选择3.4.10进行下载:

wget http://mirrors.hust.edu.cn/apache/zookeeper/zookeeper-3.4.10/zookeeper-3.4.10.tar.gz

![20170723224556906][]

下载完成后执行以下命令进行解压:

tar -zxvf zookeeper-3.4.10.tar.gz

**2、配置Zookeeper**

解压之后,在zookeeper目录下创建以下目录:

[fendo@localhost ~]$ cd zookeeper-3.4.10/
    [fendo@localhost zookeeper-3.4.10]$ mkdir data
    [fendo@localhost zookeeper-3.4.10]$ mkdir logs

将zookeeper-3.4.10/conf目录下的zoo\_sample.cfg文件拷贝一份,命名为zoo.cfg

[fendo@localhost conf]$ cp zoo_sample.cfg zoo.cfg

然后修改zoo.cfg文件

vim zoo.cfg

修改成如下

# The number of milliseconds of each tick
    tickTime=2000
    # The number of ticks that the initial 
    # synchronization phase can take
    initLimit=10
    # The number of ticks that can pass between 
    # sending a request and getting an acknowledgement
    syncLimit=5
    # the directory where the snapshot is stored.
    # do not use /tmp for storage, /tmp here is just 
    # example sakes.
    dataDir=/home/fendo/zookeeper-3.4.10/data
    dataLogDir=/home/fendo/zookeeper-3.4.10/logs
    # the port at which the clients will connect
    clientPort=2181
    # the maximum number of client connections.
    # increase this if you need to handle more clients
    #maxClientCnxns=60
    server.1=192.168.84.130:2888:3888

![20170723225749352][]

其中:  
2888端口号是zookeeper服务之间通信的端口。  
3888是zookeeper与其他应用程序通信的端口。

然后在dataDir=/home/fendo/zookeeper-3.4.10/data下创建myid文件(编辑myid文件，并在对应的IP的机器上输入对应的编号。如在zookeeper上，myid 文件内容就是1。如果只在单点上进行安装配置，那么只有一个server.1)

vim myid

![20170723230456121][]

fendo用户下修改.bash\_profile,增加zookeeper配置：

vim /home/fendo/.bash_profile

# zookeeper env export   
    ZOOKEEPER_HOME=/home/fendo/zookeeper-3.4.10 export   
    PATH=$ZOOKEEPER_HOME/bin:$PATH

![20170723233847756][]

使配置文件生效

source /home/fendo/.bash_profile

关闭防火墙

切换到root用户下,执行以下命令:

systemctl stop firewalld.service

**3、测试Zookeeper**

启动并测试zookeeper(要用普通用户启动，不要用root):

#使用fendo用户到/home/fendo/zookeeper-3.4.10/bin目录中执行  
    ./zkServer.sh start  
      
    #查看进程
    jps
    
    其中,QuorumPeerMain是zookeeper进程,启动正常。
      
    #查看状态  
    ./zkServer.sh status  
      
    #服务器输出信息  
    tail -500f zookeeper.out  
      
    #停止zookeeper进程  
    ./zkServer.sh stop

设置zookeeper服务开机启动

# 切换到/etc/rc.d/init.d/目录下  
    cd /etc/rc.d/init.d  
      
    # 创建zookeeper文件  
    touch zookeeper  
      
    #更新权限  
    chmod +x zookeeper  
      
    #编辑文件，在zookeeper里面输入如下内容  
    #!/bin/bash  
    #chkconfig:2345 20 90  
    #description:zookeeper  
    #processname:zookeeper  
    export JAVA_HOME=/user/local/java/jdk1.7.0_79  
    export PATH=$JAVA_HOME/bin:$PATH  
    case $1 in  
              start)su root /home/fendo/zookeeper-3.4.10/bin/zkServer.sh start;;  
              stop)su root /home/fendo/zookeeper-3.4.10/bin/zkServer.sh stop;;  
              status)su root /home/fendo/zookeeper-3.4.10/bin/zkServer.sh status;;  
              restart)su root /home/fendo/zookeeper-3.4.10/bin/zkServer.sh restart;;  
              *)  echo "require start|stop|status|restart"  ;;  
    esac

![20170723234050738][]

然后我们就可以用service zookeeper start/stop来启动停止zookeeper服务了

使用命令把zookeeper添加到开机启动里面

chkconfig zookeeper on  
    chkconfig --add zookeeper

添加完成之后接这个使用chkconfig --list 来看看我们添加的zookeeper是否在里面。

![20170723232457597][]

[http_mirrors.hust.edu.cn_apache_zookeeper]: http://mirrors.hust.edu.cn/apache/zookeeper/
[20170723221740796]: /images/20220612/6fb038cee48446978e6b9e751fdb9a01.png
[20170723224556906]: /images/20220612/2222870ca65a4d998f4d256af38c8e6f.png
[20170723225749352]: /images/20220612/845f08f2dcae470195834e447dcbb3a5.png
[20170723230456121]: /images/20220612/e5a41ea1ae744328958a19546d32a631.png
[20170723233847756]: /images/20220612/e43f25616e024809a1995054c7f57afb.png
[20170723234050738]: /images/20220612/7afd91a6614c4074ae248d7b8ecb0093.png
[20170723232457597]: /images/20220612/7aee900a825349f8845661bb98c791a0.png