How to access to a remote server using Paramiko with a public key-file

Question

I need to connect to a remote server without the use of a password but using a public keyfile using the Python module Paramiko.

How can I do this?

Answer 1

Use key_filename argument of SSHClient.connect:

import paramiko
 
ssh = paramiko.SSHClient()
ssh.connect("example.com", username="user", key_filename="mykeyfile")

Though you need private key file for that. You cannot authenticate with public key file.

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You will also need to verify the host key:
Paramiko "Unknown Server"