部署入口节点机

centos7基础安装：
https://www.cnblogs.com/hongfeng2019/p/11353249.html

安装JDK:
https://www.cnblogs.com/hongfeng2019/p/11270113.html

下载:hadoop-3.0.0

wget https://archive.apache.org/dist/hadoop/common/hadoop-3.0.0/hadoop-3.0.0.tar.gz

tar -zxf hadoop-3.1.2.tar.gz -C /hongfeng/software/

vim /etc/profile
HADOOP_HOME=/hongfeng/software/hadoop-3.0.0
PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin

source /etc/profile

copy集群的客户端文件:

选择hdfs,点一个节点进去,操作中选下载客户端配置:

 把copy下来的文件cp到下面目录并覆盖:

/hongfeng/software/hadoop-3.0.0/etc/hadoop

把节点的/etc/hosts拷贝下来.

部署入口节点机

原文：https://www.cnblogs.com/hongfeng2019/p/11414119.html