linux配置免登陸

配置從A機器免登陸鏈接到三臺遠程機器：B(10.169.119.148)/C(10.169.132.216)/D(10.116.116.240)

A機器：
ssh-keygen -t rsa
ssh root@10.169.119.148 "mkdir .ssh"
scp ~/.ssh/id_rsa.pub root@10.169.119.148:.ssh/id_rsa.pub
scp ~/.ssh/id_rsa.pub root@10.169.132.216:.ssh/id_rsa.pub
scp ~/.ssh/id_rsa.pub root@10.116.116.240:.ssh/id_rsa.pub

B/C/D機器：
touch /root/.ssh/authorized_keys
cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys