ssh密钥免登录配置

X的公钥在Y上面，X就可以免密登录Y

 

在master上创建公钥和私钥

ssh-keygen -t rsa

三次回车会生成 ~/.ssh/id_rsa.pub和 ~/.ssh/id_rsa

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

 

//在node01上执行

ssh-copy-id -i ~/.ssh/id_rsa.pub master

//在node02上执行 ssh-copy-id -i ~/.ssh/id_rsa.pub master

 

到此node01和node02可以免密登录master

 

在实现全免密 master执行

scp ~/.ssh/authorized_keys node01:~/.ssh/ scp ~/.ssh/authorized_keys node02:~/.ssh/