Centos7下搭建单节点Zookeeper

我就是我 2021-12-22 09:25 267阅读 0赞

##### 1.什么是zookeeper #####

Apache ZooKeeper is an effort to develop and maintain an open-source server which enables highly reliable distributed coordination.  
  
Zookeeper是Hadoop的一个子项目，它是分布式系统中的协调系统，可提供的服务主要有：配置服务、名字服务、分布式同步、组服务等

##### 2.安装zookeeper #####

# 下载
    wget http://archive.apache.org/dist/zookeeper/zookeeper-3.4.14/zookeeper-3.4.14.tar.gz
    
    # 解压
    tar -zxvf zookeeper-3.4.14.tar.gz 
    
    # 新建data和log两个目录
    cd zookeeper-3.4.14
    mkdir data
    mkdir log

##### 3.将zookeeper-3.4.14/conf目录下将zoo\_sample.cfg文件拷贝一份，命名为zoo.cfg #####

cd /usr/soft/zookeeper/zookeeper-3.4.14/conf
    cp zoo_sample.cfg zoo.cfg

##### 4.修改zoo.cfg文件 #####

修改dataDir目录，增加dataLogDir目录，增加服务器列表

dataDir=/usr/soft/zookeeper/zookeeper-3.4.14/data
    dataLogDir=/usr/soft/zookeeper/zookeeper-3.4.14/log
    
    #配置server
    # 192.168.192.130 当前机器的ip
    # 2888端口号是zookeeper服务之间通信的端口
    # 3888是zookeeper与其他应用程序通信的端口
    server.0=39.107.119.49:2888:3888

注意：dataDir目录和dataLogDir目录就是步骤2中创建的data和log目录  
  
完整配置信息如下：

# 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/soft/zookeeper/zookeeper-3.4.14/data
    dataLogDir=/usr/soft/zookeeper/zookeeper-3.4.14/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.
    #
    # 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.0=39.107.119.49:2888:3888

##### 5.在/usr/soft/zookeeper/zookeeper-3.4.14/data目录下创建myid文件 #####

里面的内容和步骤4里的server.0的序号相对应，所以这里的内容填写0  
  
![1454243-20190418123632806-1649483122.png][]

##### 6.配置zookeeper环境变量 #####

export ZOOKEEPER_HOME=/usr/soft/zookeeper/zookeeper-3.4.14
    
    # 修改完之后执行如下命令是配置文件生效
    source /etc/profile

##### 7.配置防火墙 #####

vim /etc/sysconfig/iptables

在配置文件中增加如下信息

-A INPUT -m state --state NEW -m tcp -p tcp --dport 2181 -j ACCEPT
    -A INPUT -m state --state NEW -m tcp -p tcp --dport 2888 -j ACCEPT
    -A INPUT -m state --state NEW -m tcp -p tcp --dport 3888 -j ACCEPT

重启防火墙  
  
centos7:

systemctl restart firewalld.service
    
    # 查看防火墙状态
    firewall-cmd --state

centos6:

service iptables restart
    
    # 查看防火墙状态
    service iptables status

##### 8.启动 #####

cd /usr/soft/zookeeper/zookeeper-3.4.14/bin
    # 开启
    ./zkServer.sh start
    # 关闭
    ./zkServer.sh stop
    # 查看状态
    ./zkServer.sh status

输入jps查看进程  
  
![1454243-20190418123658357-2009070090.png][]

转载于:https://www.cnblogs.com/chenshy/p/10728912.html

[1454243-20190418123632806-1649483122.png]: /images/20211220/3d0a099a95364b5dbe0ae2517437921b.png
[1454243-20190418123658357-2009070090.png]: /images/20211220/23370472c0f9470c836f010a94b495c6.png