[SSH] Login without input password

1. HOST A
Using ssh-keygen  to produce private key (~/.ssh/id_rsa) 和 public key (~/.ssh/id_rsa.pub)

When execute ssh-keygen you meet passphrase then press Enter to skip it.


2. HOST B
Private key keep it.

Content of public key write in ~/.ssh/authorized_keys  of HOST B


Reference :


SSH Login in without password