Linux ssh password-free login

Scenario: Linux hosts A and B, login to B via SSH, password-free login steps

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Step1:

Execute a one- line command in a to generate the key file: Ssh-keygen-t RSA, and then continue to enter, eventually generating id_rsa.pub files in the/root/.ssh/directory

Step2:

Modify the Id_rsa.pub file in a to Authorized_keys

Step3:

Authorized_keys via SCP to the/root/.ssh/directory of Host B

End of Operation!

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At this point in a, SSH login B, do not need to enter a password!

Linux ssh password-free login