zookeeper单击环境安装

  1.安装jdk1.7，配置环境变量

     下载jdk http://www.oracle.com/technetwork/java/javase/downloads/index-jsp-138363.html

      tar -zxvf ./jdk-7u71-linux-x64.tar.gz

 

     配置环境变量

       进入/etc/profile， 粘贴以下脚本到文件，保存文件。

         export PATH=/usr/jdk1.7.0_71/bin:$PATH
         export classpath=/usr/jdk1.7.0_71/lib
         export JAVA_HOME=/usr/jdk1.7.0_7

     

  2.下载zookeeper-3.4.6.tar.gz

       http://apache.fayea.com/zookeeper/zookeeper-3.4.6/

 

  3.解压zookeeper-3.4.6.tar.gz

 

      tar -zvxf zookeeper-3.4.6.tar.gz

   4.修改zookeeper-3.4.6/conf目录，修改zookeeper_sample.cfg为 zoo.cfg

 

              cp zoo_sample.cfg zoo.cfg

 

    5.配置zoo.cfg dataDir目录和log目录

 

    # 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/user/software/zookeeper-3.4.6/data
    dataLogDir=/home/user/software/zookeeper-3.4.6/log
    # 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.
    #
    # 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

 

参数说明：

tickTime：ZK中的一个时间单元。ZK所有时间都是以这个时间单元为基础，进行整数倍配置。例如session的最小超时时间是2*ticktime。
       dataDir：zookeeper的工作目录，注释写得很清楚，只有测试环境才使用tmp目录，否则都建议进行专门的设置。
       dataLogDir:zookerper日志输出的目录
       clientPort：客户端的连接端口
       maxClientCnxns：客户端最大连接数
       clientport:客户端连接server的端口，即对外服务端口，一般设置为2181

 

 6.启动zookeeper，进入bin目录

         ./zkServer.sh start

 

7.检查zookeeper是否启动成功，采用jps命令即可

   出现如下内容说明启动成功
      3129 Jps
      2973 QuorumPeerMain
     QuorumPeerMain这个进程就是zookeeper的进程。至此，zookeeper的单节点安装就成功了。

 

8.查看后台的zookeeper节点信息,进入bin目录执行如下命令

        ./zkCli.sh