(新)尚硅谷大数据技术之Hadoop(入门)第3章 Hadoop运行环境搭建(开发重点)
3.3 安装Hadoop
- Hadoop下载地址:
https://archive.apache.org/dist/hadoop/common/hadoop-2.7.2/
- 用SecureCRT工具将hadoop-2.7.2.tar.gz导入到opt目录下面的software文件夹下面
切换到sftp连接页面,选择Linux下编译的hadoop jar包拖入,如图2-32所示
图2-32 拖入hadoop的tar包
图2-33 拖入Hadoop的tar包成功
- 进入到Hadoop安装包路径下
[atguigu@hadoop101 ~]$ cd /opt/software/
- 解压安装文件到/opt/module下面
[atguigu@hadoop101 software]$ tar -zxvf hadoop-2.7.2.tar.gz -C /opt/module/
- 查看是否解压成功
[atguigu@hadoop101 software]$ ls /opt/module/
hadoop-2.7.2
- 将Hadoop添加到环境变量
(1)获取Hadoop安装路径
[atguigu@hadoop101 hadoop-2.7.2]$ pwd
/opt/module/hadoop-2.7.2
(2)打开/etc/profile文件
[atguigu@hadoop101 hadoop-2.7.2]$ sudo vi /etc/profile
在profile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
(3)保存后退出
:wq
(4)让修改后的文件生效
[atguigu@ hadoop101 hadoop-2.7.2]$ source /etc/profile
- 测试是否安装成功
[atguigu@hadoop101 hadoop-2.7.2]$ hadoop version
Hadoop 2.7.2
- 重启(如果Hadoop命令不能用再重启)
[atguigu@ hadoop101 hadoop-2.7.2]$ sync
[atguigu@ hadoop101 hadoop-2.7.2]$ sudo reboot