Hadoop2.7.4完全分布式集群構建實戰總結
配置好各虛擬機的網絡(采用NAT聯網模式)
通過Linux圖形界面進行修改(桌面版本Centos):進入Linux圖形界面 -> 右鍵點擊右上方的兩個小電腦 -> 點擊Edit connections-> 選中當前網絡System eth0 -> 點擊edit按鈕 -> 選擇IPv4 -> method選擇為manual ->點擊add按鈕 -> 添加IP:192.168.1.101 子網掩碼:255.255.255.0 網關:192.168.1.1 -> apply
修改配置文件方式
????????????? vi /etc/sysconfig/network-scripts/ifcfg-eth0
????????????? DEVICE="eth0"
????????????? BOOTPROTO="static"?????????????? ###
????????????? HWADDR="00:0C:29:3C:BF:E7"
????????????? IPV6INIT="yes"
????????????? NM_CONTROLLED="yes"
????????????? ONBOOT="yes"
????????????? TYPE="Ethernet"
????????????? UUID="ce22eeca-ecde-4536-8cc2-ef0dc36d4a8c"
????????????? IPADDR="192.168.1.101"?????????? ###
????????????? NETMASK="255.255.255.0"????????? ###
????????????? GATEWAY="192.168.1.1"??????????? ###
修改各個虛擬機主機名
????????????? vi /etc/sysconfig/network
????????????? NETWORKING=yes
????????????? HOSTNAME=node-1???
修改主機名和IP的映射關系
????????????? vi /etc/hosts
????????????? 192.168.1.101 node-1
????????????? 192.168.1.102 node-2
????????????? 192.168.1.103 node-3
關閉防火墻
????????????? #查看防火墻狀態
????????????? service iptables status
????????????? #關閉防火墻
????????????? service iptables stop
????????????? #查看防火墻開機啟動狀態
????????????? chkconfig iptables --list
????????????? #關閉防火墻開機啟動
????????????? chkconfig iptables off
配置ssh免登陸
?????? ??? #生成ssh免登陸密鑰
?????? ssh-keygen -t rsa (四個回車)
?????? 執行完這個命令後,會生成兩個文件id_rsa(私鑰)、id_rsa.pub(公鑰)
?????? 將公鑰拷貝到要免密登陸的目標機器上
?????? ssh-copy-id node-2
?????? ssh-copy-id node-3
同步集群時間
?????? ???? 常用的手動進行時間的同步
????????????? date -s "2018-03-03 03:03:03"
?????? ???? 或者網絡同步:
????????????? yum install ntpdate
????????????? ntpdate cn.pool.ntp.org
安裝JDK並配置環境變量
上傳jdk
????????????? rz jdk-8u65-linux-x64.tar.gz
解壓jdk
????????????? tar -zxvf jdk-8u65-linux-x64.tar.gz -C /root/apps
將java添加到環境變量中
????????????? vim /etc/profile
????????????? #在文件最後添加
????????????? export JAVA_HOME=/root/apps/jdk1.8.0_65
????????????? export PATH=$PATH:$JAVA_HOME/bin
????????????? export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
????????????? #刷新配置
????????????? source /etc/profile
安裝hadoop2.7.4
上傳hadoop的安裝包到服務器
?????? ???? hadoop-2.7.4-with-centos-6.7.tar.gz
解壓安裝包
?????? ???? tar zxvf hadoop-2.7.4-with-centos-6.7.tar.gz
?????? ?? ??註意:hadoop2.x的配置文件目錄:$HADOOP_HOME/etc/hadoop
配置hadoop的核心配置文件
配置文件hadoop-env.sh
vi hadoop-env.sh
export JAVA_HOME=/root/apps/jdk1.8.0_65
配置文件core-site.xml
說明:指定HADOOP所使用的文件系統schema(URI),HDFS的主節點(NameNode)地址
<property>
?????? ?????? <name>fs.defaultFS</name>
?????? ?????? <value>hdfs://node-1:9000</value>
</property>
說明:指定hadoop運行時產生文件的存儲目錄,默認/tmp/hadoop-${user.name} -->
<property>
?????? ?????? <name>hadoop.tmp.dir</name>
?????? ?????? <value>/home/hadoop/hadoop-2.4.1/tmp</value>
</property>
配置文件hdfs-site.xml?
Hadoop2.7.4完全分布式集群構建實戰總結