• 【zookeeper】 zookeeper 集群搭建


    集群搭建环境:

    发行版:CentOS-6.6 64bit

    内核:2.6.32-504.el6.x86_64

    CPU:intel-i7 3.6G

    内存:2G

    集群搭建步骤:

    1. 确保机器安装了jdk

    [root@rocket ~]# java -version

    openjdk version "1.8.0_51"

    OpenJDK Runtime Environment (build 1.8.0_51-b16)

    OpenJDK 64-Bit Server VM (build 25.51-b03, mixed mode)

    如果找不到jdk,可以通过yum进行安装,如果发行版不是CentOS,请自行搜索对应发行版的安装方法。

    [root@rocket local]# yum -y install java

    2. 下载zookeeper,选一个合适的版本

    在官网http://zookeeper.apache.org/releases.html找一个合适的镜像进行下载。这里使用北理的镜像进行下载。

    [root@rocket local]#  

    wget http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.4.6/zookeeper-3.4.6.tar.gz

    下载完成之后分别解压到

    [root@rocket local]# tar -zxvf zookeeper-3.4.6.tar.gz zookeeper-server1

    [root@rocket local]# tar -zxvf zookeeper-3.4.6.tar.gz zookeeper-server2

    [root@rocket local]# tar -zxvf zookeeper-3.4.6.tar.gz zookeeper-server3

    3. 拷贝配置文件

    [root@rocket local]# cd /usr/local/zookeeper-server1/;cp conf/zoo_sample.cfg conf/zoo_test.cfg

    [root@rocket local]# cd /usr/local/zookeeper-server2/;cp conf/zoo_sample.cfg conf/zoo_test.cfg

    [root@rocket local]# cd /usr/local/zookeeper-server3/;cp conf/zoo_sample.cfg conf/zoo_test.cfg

    4. 修改配置文件

    zookeeper-server1

    # 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

    dataDir=/tmp/zookeeper-server1/data

    dataLogDir=/tmp/zookeeper-server1/logs

    # the port at which the clients will connect

    clientPort=2181

    server.1=127.0.0.1:8880:7770

    server.2=127.0.0.1:8881:7770

    server.3=127.0.0.1:8882:7770

     

    zookeeper-server2

    # 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

    dataDir=/tmp/zookeeper-server2/data

    dataLogDir=/tmp/zookeeper-server2/logs

    # the port at which the clients will connect

    clientPort=3181

    server.1=127.0.0.1:8880:7770

    server.2=127.0.0.1:8881:7770

    server.3=127.0.0.1:8882:7770

     

    zookeeper-server3

    # 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

    dataDir=/tmp/zookeeper-server3/data

    dataLogDir=/tmp/zookeeper-server3/logs

    # the port at which the clients will connect

    clientPort=4181

    server.1=127.0.0.1:8880:7770

    server.2=127.0.0.1:8881:7770

    server.3=127.0.0.1:8882:7770

    5. 建立zookeeper运行目录,data目录和log目录

    [root@rocket local]# mkdir -p zookeeper-server1/logs zookeeper-server1/data

    [root@rocket local]# mkdir -p zookeeper-server2/logs zookeeper-server2/data

    [root@rocket local]# mkdir -p zookeeper-server3/logs zookeeper-server3/data

    查看当前运行目录情况:

    [root@rocket tmp]# tree

    ├── zookeeper-server1

    │   ├── data

    │   └── logs

    ├── zookeeper-server2

    │   ├── data

    │   └── logs

    └── zookeeper-server3

        ├── data

    └── logs

     

    6. 在data目录中创建文件 myid 文件,每个文件中分别写入当前机器的server id

    [root@rocket tmp]# echo "1" > zookeeper-server1/data/myid

    [root@rocket tmp]# echo "2" > zookeeper-server2/data/myid

    [root@rocket tmp]# echo "3" > zookeeper-server3/data/myid

    7. 在每个目录中启动zookeeper

    [root@rocket local]# cd /usr/local/zookeeper-server1/;bin/zkServer.sh start

    [root@rocket local]# cd /usr/local/zookeeper-server2/;bin/zkServer.sh start

    [root@rocket local]# cd /usr/local/zookeeper-server3/;bin/zkServer.sh start

    查看启动状态

    [root@iZ257w5531qZ bin]# ./zkServer.sh start
    ZooKeeper JMX enabled by default
    Using config: /opt/zookeeper-3/bin/../conf/zoo.cfg
    Starting zookeeper ... STARTED

     

    注意,这里如果提示

    Error contacting service. It is probably not running.

    说明进程启动失败或集群未建立成功,这时需要查看对应目录中的zookeeper.out日志去找到相应的原因并去解决它。

    8. 测试连接zookeeper集群

    [root@rocket local]# cd zookeeper-server1;bin/zkCli.sh -server localhost:2181

     

    可以看到这里已经连接成功了,而且能查看节点情况,说明zookeeper集群已经开始工作了。

     

    参考:zookeeper集群搭建    zookeeper配置详解

     
     
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  • 原文地址:https://www.cnblogs.com/lonelywolfmoutain/p/5132525.html
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