配置hadoop集群简易版流程

主机ssh到主机

ssh localhost

cd ~/.ssh/                     # 若没有该目录，请先执行一次ssh localhost

ssh-keygen -t rsa              # 会有提示，都按回车就可以

cat ./id_rsa.pub >> ./authorized_keys  

ssh s3

 

 

 

子节点新建hadoop用户    java改版本

sudo userdel -r hadoop 

sudo useradd -m hadoop -s /bin/bash

sudo passwd hadoop

sudo adduser hadoop sudo

 

 

主机拷贝公钥和jdk到子节点   

scp ~/.ssh/id_rsa.pub hadoop@Slave1:/home/hadoop/

scp -r jdk1.8 hadoop@s2:/home/hadoop/

 

子节点给公钥添加授权  改jdk版本

mkdir ~/.ssh      

cat ~/id_rsa.pub >> ~/.ssh/authorized_keys

rm ~/id_rsa.pub 

 

vim .bashrc

export JAVA_HOME=/home/hadoop/jdk1.8

export PATH=$JAVA_HOME/bin:$PATH

 

source .bashrc