zookeeper 本地配置多个节点

我不是女神ヾ 2022-05-24 12:58 118阅读 0赞

1. zoo.cfg配置文件如下:

# 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=/usr/local/var/run/zookeeper/data
    dataDir=/Users/userName/Documents/zookeeper/data
    dataLogDir=/Users/userName/Documents/zookeeper/logs
    
    # 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.
    #
    # 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
    
    server.1=localhost:2881:3881
    server.2=localhost:2882:3882
    server.3=localhost:2883:3883

2. 复制zoo.cfg文件命名为zoo2.cfg, 改动dataDir, dataLogDir和clientPort三个参数

dataDir=/Users/userName/Documents/zookeeper/data2
    dataLogDir=/Users/userName/Documents/zookeeper/logs2
    clientPort=2182

3. 再次复制zoo.cfg文件命令为zoo3.cfg, 改动dataDir, dataLogDir和clientPort三个参数

dataDir=/Users/userName/Documents/zookeeper/data3
    dataLogDir=/Users/userName/Documents/zookeeper/logs3
    clientPort=2183

4. 在配置的/Users/userName/Documents/zookeeper/目录下创建data, data2, data3, logs, logs2, logs3目录

5. 在data文件夹中创建文件myid, 内容填**1** (和server.**1**=localhost:2881:3881中的1一致即可)

在data2文件夹中创建文件myid, 内容填2

在data3文件夹中创建文件myid, 内容填3

注: myid文件中的内容和配置中的server.X的X一致即可

6. 启动三个服务

$ zkServer start zoo.cfg
    ZooKeeper JMX enabled by default
    Using config: /usr/local/etc/zookeeper/zoo.cfg
    Starting zookeeper ... STARTED
    $ zkServer start zoo2.cfg
    ZooKeeper JMX enabled by default
    Using config: /usr/local/etc/zookeeper/zoo2.cfg
    Starting zookeeper ... STARTED
    $ zkServer start zoo3.cfg
    ZooKeeper JMX enabled by default
    Using config: /usr/local/etc/zookeeper/zoo3.cfg
    Starting zookeeper ... STARTED

7. 通过zkServer status命令查看各自的角色

$ zkServer status zoo.cfg
    ZooKeeper JMX enabled by default
    Using config: /usr/local/etc/zookeeper/zoo.cfg
    Mode: follower
    $ zkServer status zoo2.cfg
    ZooKeeper JMX enabled by default
    Using config: /usr/local/etc/zookeeper/zoo2.cfg
    Mode: leader
    $ zkServer status zoo3.cfg
    ZooKeeper JMX enabled by default
    Using config: /usr/local/etc/zookeeper/zoo3.cfg
    Mode: follower

可看出, 选举的结果为: server2为leader(master), server1和server3为follower(slave)节点

**注意事项:**

1. 第4步中的几个文件夹需要提前创建, 否则可能报错

2. 注意cfg中的配置(server.1=localhost:2881:3881), localhost别写错了, 2881端口别写成2181了

3. 其他错误可参见: https://blog.csdn.net/xiewendong93/article/details/50500471