更新時(shí)間:2021-04-02 來源:黑馬程序員 瀏覽量:
在上一小節(jié)中,我們已經(jīng)把Zookeeper的安裝包成功解壓至/export/servers目錄下。接下來,我們開始配置Zookeeper集群。
1.修改Zookeeper的配置文件
首先,進(jìn)入Zookeeper解壓目錄下的conf目錄,復(fù)制配置文件zoo_sample.cfg并重命名為zoo.cfg,具體命令如下:
$ cp zoo_sample.cfg zoo.cfg其次,修改配置文件zoo.cfg,分別設(shè)置dataDir目錄,配置服務(wù)器編號與主機(jī)名映射關(guān)系,設(shè)置與主機(jī)連接的心跳端口和選舉端口,具體配置內(nèi)容如下:
# The number of milliseconds of each tick \# 設(shè)置通信心跳數(shù) tickTime=2000 \# The number of ticks that the initial \# synchronization phase can take \# 設(shè)置初始通信時(shí)限 initLimit=10 \# The number of ticks that can pass between \# sending a request and getting an acknowledgement \# 設(shè)置同步通信時(shí)限 syncLimit=5 \# the directory where the snapshot is stored. \# do not use /tmp for storage, /tmp here is just \# example sakes. **#** **設(shè)置數(shù)據(jù)文件目錄+****數(shù)據(jù)持久化路徑** **dataDir=/export/data/zookeeper/zkdata** \# the port at which the clients will connect \# 設(shè)置客戶端連接的端口號 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集群的服務(wù)器編號以及對應(yīng)的主機(jī)名、通信端口號(心跳端口號)、選舉端口號** **server.1=hadoop01:2888:3888** **server.2=hadoop02:2888:3888** **server.3=hadoop03:2888:3888**
2.創(chuàng)建myid文件
首先,根據(jù)配置文件zoo.cfg中設(shè)置的dataDir目錄,創(chuàng)建zkdata文件夾,具體命令如下:
$ mkdir -p /export/data/zookeeper/zkdata其次,在zkdata文件夾下創(chuàng)建myid文件,該文件里面的內(nèi)容就是服務(wù)器編號(hadoop01服務(wù)器對應(yīng)編號1,hadoop02服務(wù)器對應(yīng)編號2,hadoop03服務(wù)器對應(yīng)編號3),具體命令如下:
$ cd /export/data/zookeeper/zkdata $ echo 1 > myid
3.配置環(huán)境變量
Linux系統(tǒng)目錄/etc下的文件profile里面的內(nèi)容都是與Linux環(huán)境變量相關(guān)的。所以,我們一般配置環(huán)境變量都是在profile文件里面。執(zhí)行命令vi /etc/profile對profile文件進(jìn)行修改,添加Zookeeper的環(huán)境變量,具體命令如下:
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.分發(fā)Zookeeper相關(guān)文件至其他服務(wù)器
首先,將Zookeeper安裝目錄分發(fā)至hadoop02、hadoop03服務(wù)器上。具體命令如下:
$ scp -r /export/servers/zookeeper-3.4.10/ hadoop02:/export/servers/ $ scp -r /export/servers/zookeeper-3.4.10/ hadoop03:/export/servers/
其次,將myid文件分發(fā)至hadoop02、hadoop03服務(wù)器上,并且修改myid的文件內(nèi)容,依次對應(yīng)服務(wù)器號進(jìn)行設(shè)置,分別為2、3。具體命令如下:
$ scp -r /export/data/zookeeper/ hadoop02:/export/data/ $ scp -r /export/data/zookeeper/ hadoop03:/export/data/
最后,將profile文件也分發(fā)至hadoop02、hadoop03服務(wù)器上。具體命令如下:
$ scp /etc/profile hadoop02:/etc/profile $ scp /etc/profile hadoop03:/etc/profile
5.環(huán)境變量生效
分別在hadoop01、hadoop02、hadoop03服務(wù)器上刷新profile配置文件,使環(huán)境變量生效。具體命令如下:
$ source /etc/profile
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