部署Hadoop集群前奏之ssh如何不输入密码在Master与Slave之间访问

操作系统：CentOS 6.2

虚拟机：VMWare 8.0

Master与Slave都需要做：

用root登陆,建立hadoop用户
useradd hadoop
passwd hadoop

源机器执行：

ssh-keygen -t rsa -P '';cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys;scp ~/.ssh/id_rsa.pub hadoop@目标机器IP:~/;cat ~/id_rsa.pub >> ~/.ssh/authorized_keys

 

目标机器执行：

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

 

 

 

完成！