zookeeper集群搭建设置

 zookeeper 官网：http://zookeeper.apache.org/ 现在最新版本是 3.4.6 ，但是这个版本我没有运行起来，可能是那配置出现问题了，现在我用的是3.4.5 http://apache.fayea.com/apache-mirror/zookeeper/zookeeper-3.4.5/

环境：windows 8.1 、zookeeper3.4.5

现在要做的是 单机伪集群（木有办法 没有那么多机器啊）

1. 修改配置文件，在conf中

   将zoo_sample.cfg文件复制一个重命名为zoo.cfg 

2. 修改zoo.cfg 内容

        打开zoo.cfg：

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<code class= "hljs vala" style= "padding:0.5em; margin:0px; display:block; color:rgb(101,123,131); overflow-x:auto; background:rgb(253,246,227)" ><span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # The number of milliseconds of each tick</span> tickTime=<span class= "hljs-number" style= "padding:0px; margin:0px; color:rgb(42,161,152)" >2000< /span > <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # The number of ticks that the initial </span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # synchronization phase can take</span> initLimit=<span class= "hljs-number" style= "padding:0px; margin:0px; color:rgb(42,161,152)" >10< /span > <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # The number of ticks that can pass between </span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # sending a request and getting an acknowledgement</span> syncLimit=<span class= "hljs-number" style= "padding:0px; margin:0px; color:rgb(42,161,152)" >5< /span > <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # the directory where the snapshot is stored.</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # do not use /tmp for storage, /tmp here is just </span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # example sakes.</span> dataDir= /tmp/zookeeper <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # the port at which the clients will connect</span> clientPort=<span class= "hljs-number" style= "padding:0px; margin:0px; color:rgb(42,161,152)" >2181< /span > <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # Be sure to read the maintenance section of the </span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # administrator guide before turning on autopurge.</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # The number of snapshots to retain in dataDir</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #autopurge.snapRetainCount=3</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # Purge task interval in hours</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # Set to "0" to disable auto purge feature</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #autopurge.purgeInterval=1</span></code>

      修改后：

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<code class= "hljs vala" style= "padding:0.5em; margin:0px; display:block; color:rgb(101,123,131); overflow-x:auto; background:rgb(253,246,227)" ><span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # The number of milliseconds of each tick</span> tickTime=<span class= "hljs-number" style= "padding:0px; margin:0px; color:rgb(42,161,152)" >2000< /span > <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # The number of ticks that the initial </span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # synchronization phase can take</span> initLimit=<span class= "hljs-number" style= "padding:0px; margin:0px; color:rgb(42,161,152)" >10< /span > <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # The number of ticks that can pass between </span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # sending a request and getting an acknowledgement</span> syncLimit=<span class= "hljs-number" style= "padding:0px; margin:0px; color:rgb(42,161,152)" >5< /span > <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # the directory where the snapshot is stored.</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # do not use /tmp for storage, /tmp here is just </span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # example sakes.</span> dataDir=E: /zookeepercluster/servcer001/data dataLogDir=E: /zookeepercluster/servcer001/logs <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # the port at which the clients will connect</span> clientPort=<span class= "hljs-number" style= "padding:0px; margin:0px; color:rgb(42,161,152)" >2181< /span > <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # Be sure to read the maintenance section of the </span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # administrator guide before turning on autopurge.</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # The number of snapshots to retain in dataDir</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #autopurge.snapRetainCount=3</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # Purge task interval in hours</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > # Set to "0" to disable auto purge feature</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #autopurge.purgeInterval=1</span> server.1=localhost:<span class= "hljs-number" style= "padding:0px; margin:0px; color:rgb(42,161,152)" >8881< /span >:<span class= "hljs-number" style= "padding:0px; margin:0px; color:rgb(42,161,152)" >7771< /span > server.2=localhost:<span class= "hljs-number" style= "padding:0px; margin:0px; color:rgb(42,161,152)" >8882< /span >:<span class= "hljs-number" style= "padding:0px; margin:0px; color:rgb(42,161,152)" >7772< /span > <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #server.3=192.168.192.7:8883:7773</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #server.4=192.168.192.7:8884:7774</span> <span class= "hljs-preprocessor" style= "padding:0px; margin:0px; color:rgb(203,75,22)" > #server.5=192.168.192.7:8885:7775</span></code>

  主要是在下边添加几个服务器的ip地址，因为我的都是本机，所以我这都是一样的地址。

  参数解释：

• tickTime：发送心跳的间隔时间，单位：毫秒

• dataDir：zookeeper保存数据的目录。

• clientPort：客户端连接 Zookeeper 服务器的端口，Zookeeper 会监听这个端口，接受客户端的访问请求。

• initLimit：这个配置项是用来配置 Zookeeper 接受客户端（这里所说的客户端不是用户连接 Zookeeper 服务器的客户端，而是 Zookeeper 服务器集群中连接到 Leader 的 Follower 服务器）初始化连接时最长能忍受多少个心跳时间间隔数。当已经超过 5个心跳的时间（也就是 tickTime）长度后 Zookeeper 服务器还没有收到客户端的返回信息，那么表明这个客户端连接失败。总的时间长度就是 5*2000=10 秒

• syncLimit：这个配置项标识 Leader 与 Follower 之间发送消息，请求和应答时间长度，最长不能超过多少个 tickTime 的时间长度，总的时间长度就是 2*2000=4 秒

• server.A=B：C：D：其中 A 是一个数字，表示这个是第几号服务器；B 是这个服务器的 ip 地址；C 表示的是这个服务器与集群中的 Leader 服务器交换信息的端口；D 表示的是万一集群中的 Leader 服务器挂了，需要一个端口来重新进行选举，选出一个新的 Leader，而这个端口就是用来执行选举时服务器相互通信的端口。如果是伪集群的配置方式，由于 B 都是一样，所以不同的 Zookeeper 实例通信端口号不能一样，所以要给它们分配不同的端口号。

  3. 在data下面创建一个myid文件，内容为1

      这个内容对应的是这个zookeeper的顺序，第一个zookeeper就是1，第二个zookeeper就是2，没有先后顺序，只是不能重复。

     这个最好是和 server.x 中的x对应

依次修改配置文件 简历server02，server03，server04节点 目录结构如下：

├── server001

│   ├── data

│   ├── logs

│   └── zookeeper-3.4.5

├── server002

│   ├── data

│   ├── logs

│   └── zookeeper-3.4.5

├── server003

│   ├── data

│   ├── logs

│   └── zookeeper-3.4.5

├── server004

│   ├── data

│   ├── logs

│   └── zookeeper-3.4.5

└── server005

    ├── data

    ├── logs

    └── zookeeper-3.4.5

这样就配置好了，windows下的单机伪集群。

下面就是启动了：

进入bin下双击 ：zkServer.cmd

报这个错误是因为还有节点没有启动起来，都启动了就会不报错了

运行 zkServer.cmd status 可以查看节点的角色  是leader 还是follower

这样一个伪集群就成功了，如果有不对的地方希望大家批评指正，ORZ。

参考文章：

http://www.cnblogs.com/haippy/archive/2012/07/19/2599989.html

http://zookeeper.apache.org/

http://zookeeper.apache.org/doc/current/zookeeperStarted.html

http://zookeeper.apache.org/doc/current/index.html

http://www.ibm.com/developerworks/cn/opensource/os-cn-zookeeper/