ZooKeeper CentOS7上安装

下载http://www.apache.org/dyn/closer.cgi/zookeeper（我下的是zookeeper-3.4.14）

1、创建 /usr/local/services/zookeeper 文件夹：

    mkdir -p /usr/local/services/zookeeper

 

2、进入到 /usr/local/services/zookeeper 目录中：

    cd /usr/local/services/zookeeper

 

3、下载 zookeeper-3.4.9.tar.gz：

    wget https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/zookeeper-3.4.9/zookeeper-3.4.9.tar.gz

 

4、解压缩 zookeeper-3.4.9.tar.gz：

    tar -zxvf zookeeper-3.4.9.tar.gz

 

5、进入到 /usr/local/services/zookeeper/zookeeper-3.4.9/conf 目录中：

    cd zookeeper-3.4.9/conf/

 

6、复制 zoo_sample.cfg 文件的并命名为为 zoo.cfg：

    cp zoo_sample.cfg zoo.cfg

 

7、用 vim 打开 zoo.cfg 文件并修改其内容为如下：

    # 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-3.4.9/data

 

    # 日志文件夹

    dataLogDir=/usr/local/services/zookeeper/zookeeper-3.4.9/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

 

8、保存并关闭 zoo.cfg 文件:

     

9、进入到 /usr/local/services/zookeeper/zookeeper-3.4.9/bin 目录中：

    cd ../bin/

 

10、用 vim 打开 /etc/ 目录下的配置文件 profile：

    vim /etc/profile

    并在其尾部追加如下内容：

 

    # idea - zookeeper-3.4.9 config start - 2016-09-08

 

    export ZOOKEEPER_HOME=/usr/local/services/zookeeper/zookeeper-3.4.9/

    export PATH=$ZOOKEEPER_HOME/bin:$PATH

    export PATH

 

    # idea - zookeeper-3.4.9 config start - 2016-09-08

 

11、使 /etc/ 目录下的 profile 文件即可生效：

    source /etc/profile

 

12、启动 zookeeper 服务：

    zkServer.sh start

    如打印如下信息则表明启动成功：

    ZooKeeper JMX enabled by default

    Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg

    Starting zookeeper ... STARTED

 

13、查询 zookeeper 状态：

    zkServer.sh status

 

14、关闭 zookeeper 服务：

    zkServer.sh stop

    如打印如下信息则表明成功关闭：

    ZooKeeper JMX enabled by default

    Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg

    Stopping zookeeper ... STOPPED

 

15、重启 zookeeper 服务：

    zkServer.sh restart

    如打印如下信息则表明重启成功：

    ZooKeeper JMX enabled by default

    Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg

    ZooKeeper JMX enabled by default

    Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg

    Stopping zookeeper ... STOPPED

    ZooKeeper JMX enabled by default

    Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg

    Starting zookeeper ... STARTED