centos7 安装 hadoop2.8.1

2017-12-22 本文已影响0人 rich_linn

1，查看操作系统版本

[hadoop@vm172-31-64-34 ~]$ cat /etc/centos-release

CentOS Linux release 7.0.1406 (Core)

2，主机规划

172.31.64.33 master

172.31.64.34 slave1

172.31.64.12 slave2

3，创建hadoop用户

登录各主机，执行

useradd hadoop

passwd hadoop

4，免密登录

在master上执行

ssh-keygen

一路回车

ssh-copy-id hadoop@172.31.64.34

ssh-copy-id hadoop@172.31.64.12

5，java安装

登录个主机执行

yum install java

查看openjdk安装路径

[root@vm172-31-64-34 ~]# rpm -qa | grep openjdk

java-1.8.0-openjdk-headless-1.8.0.151-5.b12.el7_4.x86_64

java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64

[root@vm172-31-64-34 ~]# rpm -ql java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64

/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64/jre/bin/policytool

/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64/jre/lib/amd64/libawt_xawt.so

/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64/jre/lib/amd64/libjawt.so

/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64/jre/lib/amd64/libjsoundalsa.so

/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64/jre/lib/amd64/libsplashscreen.so

/usr/share/applications/java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64-policytool.desktop

配置环境变量

export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64

export JRE_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64/jre

export CLASSPATH=.:${CLASSPATH}:${JAVA_HOME}/lib:${JRE_HOME}/lib

export PATH=${PATH}:${JAVA_HOME}/bin:${JRE_HOME}/bin