zookeeper集群安装

microservice
linux

环境准备

安装配置

  • 解压zookeeper安装包，tar -zxvf zookeeper-3.4.12.tar.gz ,解压后目录

    zookeeper_list

  • 添加zookeeper配置，进入conf目录，使用cp zoo_sample.cfg zoo.cfg 复制zoo_sample.cfg为zoo.cfg

    修改后配置

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    # 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=/tmp/zookeeper
    # 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
    #
    # Be sure to read the maintenance section of the 
    # administrator guide before turning on autopurge.
    #
    # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
    #
    # The number of snapshots to retain in dataDir
    #autopurge.snapRetainCount=3
    # Purge task interval in hours
    # Set to "0" to disable auto purge feature
    #autopurge.purgeInterval=1
    server.1=192.168.146.151:2188:3181
    server.2=192.168.146.152:2188:3181
    server.3=192.168.146.153:2188:3181

    主要配置说明

    ​ clientPort运行端口号

    ​ dataDir数据存储位置

    myid设置

    ​ 当安装zookeeper集群环境时要在dataDir目录下创建当前zookeeper的myid

    ​ 如我在192.168.146.151机器上创建在/tmp/zookeeper/myid文件，文件内容为1，依次类推 。

    添加server集群配置

    ​ server.1=192.168.146.151:2188:3181–>server.myid=ip:clientPort:prot，有几台机器添加几条配置 ，注意两个端口号不可以重复（如果重复会出现端口号重复的问题）,如上配置。

  • 启动运行，进入每台机器zookeeper目录中的bin文件夹，运行zkServer.sh脚本，如 sh zkServer.sh start ,运行时可在启动目录下查看zookeeper.out 控制台日志。

  • 启动好了可通过运行bin目录下的zkCli.sh脚本连接zookeeper，如

    zkclient.png

    也可通过sh zkServer.sh status 查看当前zookeeper是什么角色

注：zookeeper 集群角色分为leader、follower、observer，这里我配置的只有leader和follower，要台添加一台observer机器，在server配置后面标记为observer如：server.4=192.168.146.154:2188:3181:observer