How to ssh into a server from Ubuntu if Permission denied (publickey).?

Question

SSH

Hi.

on ubuntu 20 did sudo ssh-keygen
in /root/.ssh/ id_rsa appeared and id_rsa.pub
gave id_rsa.pub to admin

trying to login sudo ssh [email protected]
gives Permission denied (publickey).

I tried to throw id_rsa in /user/.ssh/ I
tried different ssh [email protected] with and without sudo,

just don’t send it to Google, I was there,

tell me exactly how to enter and what is the problem.

Permission denied (public key).

Answer 1

Google was bad - look

Answer 2

Of course, sudo won't help here, as the connection will use the root user's environment on your machine, for which there is no key.
Ask the administrator under which user to connect (obviously not under root, as you tried).

Answer 3

sudo ssh [email protected]
It is not right. This is very bad.
you need to ssh [email protected]
and already THERE after sudo entered.