fengd's zone

搭建 Zookeeper Cluster

下载 Zookeeper

目前的版本是 3.4.13, 下载最新稳定版, 在本地配置一个为集群。

配置实例

把 zookeeper 解压到你的用户根目录下,创建三个实例配置文件

    cp zoo_sample.cfg zoo-slave1.cfg
    cp zoo_sample.cfg zoo-slave2.cfg
    cp zoo_sample.cfg zoo-slave3.cfg

修改配置文件:

    # sub zoo-slave1.cfg

    # 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=/users/fengd/zk-data/slave1/data

    # the port at which the clients will connect
    clientPort=2181

    server.1=localhost:2887:3887
    server.2=localhost:2888:3888
    server.3=localhost:2889:3889

    # 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

配置文件都有详细的说明,需要创建的文件夹是 dataDir, 每个配置文件制定的文件目录都需要创建。

此外还需要在对应的每个 dataDir 下创建每个 instance 对应的 id

每个 myid 的值对应的是你的配置文件里, server.{id} 的值, 因为在一台机器上模拟一个伪集群,所以 clientPort 也都是不同的。

启动集群

通过不同的配置文件启动 instance

    # cd ~/zookeeper/bin

    ./zkServer.sh start ../conf/zoo-slave1.cfg
    ./zkServer.sh start ../conf/zoo-slave2.cfg
    ./zkServer.sh start ../conf/zoo-slave3.cfg

查看状态

查看是否启动成功

jps

13120 QuorumPeerMain
13174 QuorumPeerMain
13191 Jps
13147 QuorumPeerMain

产看每个实例的状态

启动成功,装好了再来玩~