一：Hadoop安装
1：下载安装包
hadoop-3.1.3
2：配置环境变量
[root@localhost hadoop-3.1.3]# pwd /usr/local/src/hadoop-3.1.3 [root@localhost hadoop-3.1.3]# /usr/local/src/hadoop-3.1.3 -bash: /usr/local/src/hadoop-3.1.3: Is a directory [root@localhost hadoop-3.1.3]# ^C [root@localhost hadoop-3.1.3]# vi /etc/profile [root@localhost hadoop-3.1.3]# source profile -bash: profile: No such file or directory [root@localhost hadoop-3.1.3]# source /etc/profile [root@localhost hadoop-3.1.3]# cat /etc/profile export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.412.b08-1.el7_9.x86_64 export PATH=$JAVA_HOME/bin:$PATH export HADOOP_HOME=/usr/local/src/hadoop-3.1.3 export PATH=$PATH:$HADOOP_HOME/bin export PATH=$PATH:$HADOOP_HOME/sbin [root@localhost hadoop-3.1.3]#3：查看安装结果
[root@localhost hadoop-3.1.3]# hadoop version Hadoop 3.1.3 Source code repository https://gitbox.apache.org/repos/asf/hadoop.git -r ba631c436b806728f8ec2f54ab1e289526c90579 Compiled by ztang on 2019-09-12T02:47Z Compiled with protoc 2.5.0 From source with checksum ec785077c385118ac91aadde5ec9799 This command was run using /usr/local/src/hadoop-3.1.3/share/hadoop/common/hadoop-common-3.1.3.jar [root@localhost hadoop-3.1.3]# yarn version Hadoop 3.1.3 Source code repository https://gitbox.apache.org/repos/asf/hadoop.git -r ba631c436b806728f8ec2f54ab1e289526c90579 Compiled by ztang on 2019-09-12T02:47Z Compiled with protoc 2.5.0 From source with checksum ec785077c385118ac91aadde5ec9799 This command was run using /usr/local/src/hadoop-3.1.3/share/hadoop/common/hadoop-common-3.1.3.jar [root@localhost hadoop-3.1.3]#二：Hadoop介绍
1：目录介绍
[root@localhost hadoop-3.1.3]# ll total 176 drwxr-xr-x. 2 root root 183 Sep 12 2019 bin drwxr-xr-x. 3 root root 20 Sep 12 2019 etc drwxr-xr-x. 2 root root 106 Sep 12 2019 include drwxr-xr-x. 3 root root 20 Sep 12 2019 lib drwxr-xr-x. 4 root root 288 Sep 12 2019 libexec -rw-rw-r--. 1 root root 147145 Sep 4 2019 LICENSE.txt -rw-rw-r--. 1 root root 21867 Sep 4 2019 NOTICE.txt -rw-rw-r--. 1 root root 1366 Sep 4 2019 README.txt drwxr-xr-x. 3 root root 4096 Sep 12 2019 sbin drwxr-xr-x. 4 root root 31 Sep 12 2019 share [root@localhost hadoop-3.1.3]#
