Logging in without ssh keys
I set up one server with ssh keys. I could ssh into it with the keys but my colleague couldn't so (somehow) I managed to create a login so that he could access it without providing the keys.
Now I need to create another brand new server with similar access but whatever I do the new server requires the key. Has something changed in the setup? The old server is still accessible with just the root password but the new one says "Permission denied (publickey)."
How can I give my colleague access with just root password?