在 CentOS7 docker 镜像 上安装 zookeeper-3.4.11 服务

在 CentOS7 docker 镜像 上安装 zookeeper-3.4.11 服务

1. 获取centos 镜像

2. 执行docker 命令，运行docker容器

   docker run -t -i --name='centos' -p 8080:80 -d 2d194b392dd1 /bin/bash

3. 进入docker容器:安装jdk

4. 建立 /usr/local/services/zookeeper 文件夹：

   mkdir -p /usr/local/services/zookeeper

5. 进入到 /usr/local/services/zookeeper 目录中：

   cd /usr/local/services/zookeeper

6. 下载 zookeeper-3.4.11.tar.gz：

   wget https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/zookeeper-3.4.11/zookeeper-3.4.11.tar.gz

7. 解压缩 zookeeper-3.4.11.tar.gz：

   tar -zxvf zookeeper-3.4.11.tar.gz

8. 进入到 /usr/local/services/zookeeper/zookeeper-3.4.11/conf 目录中：

   cd zookeeper-3.4.11/conf/

9. 复制 zoo_sample.cfg 文件的并命名为为 zoo.cfg：

   cp zoo_sample.cfg zoo.cfg

10. 用 vim 打开 zoo.cfg 文件并修改其内容为以下：

    # The number of milliseconds of each tick
    
    # zookeeper 定义的基准时间间隔，单位：毫秒
    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
    
    # 数据文件夹
    dataDir=/usr/local/services/zookeeper/zookeeper-3.4.11/data
    
    # 日志文件夹
    dataLogDir=/usr/local/services/zookeeper/zookeeper-3.4.11/logs
    
    # the port at which the clients will connect
    # 客户端访问 zookeeper 的端口号
    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

11. 保存并关闭 zoo.cfg 文件:

12. 用 vim 打开 /etc/ 目录下的配置文件 profile： vim /etc/profile 并在其尾部追加以下内容：

    # idea - zookeeper-3.4.11 config start - 2016-09-08
    
    export ZOOKEEPER_HOME=/usr/local/services/zookeeper/zookeeper-3.4.11/
    export PATH=$ZOOKEEPER_HOME/bin:$PATH
    export PATH
    
    # idea - zookeeper-3.4.11 config start - 2016-09-08

13. 使 /etc/ 目录下的 profile 文件便可生效：

    source /etc/profile

14. 启动 zookeeper 服务：

    zkServer.sh start

    如打印以下信息则代表启动成功： ZooKeeper JMX enabled by default Using config: /usr/local/services/zookeeper/zookeeper-3.4.11/bin/../conf/zoo.cfg Starting zookeeper ... STARTED

15. 查询 zookeeper 状态：

    zkServer.sh status

16. 关闭 zookeeper 服务：

    zkServer.sh stop

    如打印以下信息则代表成功关闭： ZooKeeper JMX enabled by default Using config: /usr/local/services/zookeeper/zookeeper-3.4.11/bin/../conf/zoo.cfg Stopping zookeeper ... STOPPED

17. 重启 zookeeper 服务：

    zkServer.sh restart

    如打印以下信息则代表重启成功： ZooKeeper JMX enabled by default Using config: /usr/local/services/zookeeper/zookeeper-3.4.11/bin/../conf/zoo.cfg ZooKeeper JMX enabled by default Using config: /usr/local/services/zookeeper/zookeeper-3.4.11/bin/../conf/zoo.cfg Stopping zookeeper ... STOPPED ZooKeeper JMX enabled by default Using config: /usr/local/services/zookeeper/zookeeper-3.4.11/bin/../conf/zoo.cfg Starting zookeeper ... STARTED