更新时间:2021-04-02 来源:黑马程序员 浏览量:
在上一小节中,我们已经把Zookeeper的安装包成功解压至/export/servers目录下。接下来,我们开始配置Zookeeper集群。
1.修改Zookeeper的配置文件
首先,进入Zookeeper解压目录下的conf目录,复制配置文件zoo_sample.cfg并重命名为zoo.cfg,具体命令如下:
$ cp zoo_sample.cfg zoo.cfg其次,修改配置文件zoo.cfg,分别设置dataDir目录,配置服务器编号与主机名映射关系,设置与主机连接的心跳端口和选举端口,具体配置内容如下:
# The number of milliseconds of each tick \# 设置通信心跳数 tickTime=2000 \# The number of ticks that the initial \# synchronization phase can take \# 设置初始通信时限 initLimit=10 \# The number of ticks that can pass between \# sending a request and getting an acknowledgement \# 设置同步通信时限 syncLimit=5 \# the directory where the snapshot is stored. \# do not use /tmp for storage, /tmp here is just \# example sakes. **#** **设置数据文件目录+****数据持久化路径** **dataDir=/export/data/zookeeper/zkdata** \# the port at which the clients will connect \# 设置客户端连接的端口号 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 **#** **配置ZK集群的服务器编号以及对应的主机名、通信端口号(心跳端口号)、选举端口号** **server.1=hadoop01:2888:3888** **server.2=hadoop02:2888:3888** **server.3=hadoop03:2888:3888**
2.创建myid文件
首先,根据配置文件zoo.cfg中设置的dataDir目录,创建zkdata文件夹,具体命令如下:
$ mkdir -p /export/data/zookeeper/zkdata其次,在zkdata文件夹下创建myid文件,该文件里面的内容就是服务器编号(hadoop01服务器对应编号1,hadoop02服务器对应编号2,hadoop03服务器对应编号3),具体命令如下:
$ cd /export/data/zookeeper/zkdata $ echo 1 > myid
3.配置环境变量
Linux系统目录/etc下的文件profile里面的内容都是与Linux环境变量相关的。所以,我们一般配置环境变量都是在profile文件里面。执行命令vi /etc/profile对profile文件进行修改,添加Zookeeper的环境变量,具体命令如下:
export ZK_HOME=/export/servers/zookeeper-3.4.10 export PATH=$PATH:$JAVA_HOME/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$ZK_HOME/bin
4.分发Zookeeper相关文件至其他服务器
首先,将Zookeeper安装目录分发至hadoop02、hadoop03服务器上。具体命令如下:
$ scp -r /export/servers/zookeeper-3.4.10/ hadoop02:/export/servers/ $ scp -r /export/servers/zookeeper-3.4.10/ hadoop03:/export/servers/
其次,将myid文件分发至hadoop02、hadoop03服务器上,并且修改myid的文件内容,依次对应服务器号进行设置,分别为2、3。具体命令如下:
$ scp -r /export/data/zookeeper/ hadoop02:/export/data/ $ scp -r /export/data/zookeeper/ hadoop03:/export/data/
最后,将profile文件也分发至hadoop02、hadoop03服务器上。具体命令如下:
$ scp /etc/profile hadoop02:/etc/profile $ scp /etc/profile hadoop03:/etc/profile
5.环境变量生效
分别在hadoop01、hadoop02、hadoop03服务器上刷新profile配置文件,使环境变量生效。具体命令如下:
$ source /etc/profile
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