SSH Login without Password (RHEL 5.4)

for root user

• [root@A ~]vi /etc/hosts

#[IP address] [hostname]

192.168.1.X A

192.168.1.Y B

• generate authentication keys and distribute

[root@A ~]# ssh-keygen -t rsa

[root@A ~]# cp ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys

[root@A ~]# scp ~/.ssh/* root@B:~/.ssh/

• check

[root@A ~]# ssh B

[root@A ~]# ssh A

for non-root users

• just like what has to do for root user