官网
http://hadoop.apache.org/
下载页:https://hadoop.apache.org/releases.html
上传安装包到Linux
解压并进入到目录下
[root@hadoop101 software]# tar -zxf hadoop-2.7.2.tar.gz -C /opt/module/
[root@hadoop101 software]# ls /opt/module/
hadoop-2.7.2
[root@hadoop101 software]# ls /opt/module/
hadoop-2.7.2
$ cd /opt/module/hadoop-2.7.7/
配置JAVA_HOME 位置
在/opt/module/hadoop-2.7.2/etc/hadoop路径下配置hadoop-env.sh
(1)Linux系统中获取jdk的安装路径:
[root@hadoop101 jdk1.8.0_144]# echo $JAVA_HOME
/opt/module/jdk1.8.0_144
(2)修改hadoop-env.sh文件中JAVA_HOME 路径:
[root@hadoop101 hadoop]# vi hadoop-env.sh
修改JAVA_HOME如下
export JAVA_HOME=/opt/module/jdk1.8.0_144
将hadoop添加到环境变量
(1)获取hadoop安装路径:
[root@ hadoop101 hadoop-2.7.2]# pwd
/opt/module/hadoop-2.7.2
(2)打开/etc/profile文件:
[root@ hadoop101 hadoop-2.7.2]# vi /etc/profile
在profie文件末尾添加jdk路径:(shitf+g)
##HADOOP_HOME
export HADOOP_HOME=/opt/module/hadoop-2.7.2
export PATH=$PATH:$HADOOP_HOME/bin
export PATH=$PATH:$HADOOP_HOME/sbin
(4)让修改后的文件生效:.
[root@ hadoop101 hadoop-2.7.2]# source /etc/profile
(5)测试是否安装成功
[root@ hadoop101 hadoop-2.7.2]$ hadoop version
Hadoop 2.7.2