Why does the machine on which the ssh key was created not allow me to log into it?

Question

linux

Under a certain user, I generated a key pair (ssh-keygen) on machine 1, brought the public key to machine 2 (autorized_keys), and successfully connected to it. However, I cannot use this key to connect as the same user to the machine where the key was created (also the public key was added to the authorized_key). The question is, how so?

Answer 1

What about the private key? For good on the other machine, you need to create a new pair of keys.

Answer 2

Perhaps the problem is in the name of the file "authorized_keys" , or the rights to the file and directory "./ssh" .

Answer 3

Thanks everyone. If you use the ssh-keygen command with the -t -C -b keys, then these keys can be used universally, that is, they are suitable both for the creator's machine and for all others where the public key is registered in the auhorized_keys file.