How can I use ssh keys from the machine on which I am a user to connect to the machine on which I need to work as root?

Question

linux

There is a remote machine on which you need to work as root. On my machine, I work as a user, I do ssh-copy-id 192.168.2.3 (I also did ssh-copy-id [email protected]). But when I want to connect, it still asks for the root password. How to make sure that he does not ask? Really users on both hosts should be under one name?

Answer 1

All figured out. It was necessary to add the following line to /etc/ssh/sshd_config:
no other parameters in the config can be changed at all.
It is also important to execute the command on the host from which you are connecting:
$ ssh-add

Answer 2

Check the /root/.ssh/authorized_keys file for the required public key.

Answer 3

did: ssh-copy-id [email protected]
How are you connecting? ssh [email protected] ?
On some systems, remote root access is discouraged, it's better to connect to a remote machine as a user and if absolutely necessary, immediately execute sudo bash by configuring /etc/sudoers so that it does not ask for extra passwords
and do ssh -v [email protected]
to see the log in more detail that's not right there.

Answer 4

If the ability to log in as a root is disabled on a remote server, then at least stand on your head - you can’t connect with a root. You need to connect as a normal user, and then su or sudo.