Cannot use `su` or `sudo` after set up key-based access to SSH

Posted by OrangeTux on Super User See other posts from Super User or by OrangeTux
Published on 2012-06-16T08:56:44Z Indexed on 2012/06/16 9:18 UTC
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ssh

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su

I'm following this tuturial to setup key-based access to the SSH

I created a user. I add copy the key to the client via ssh-copy-id <username>@<host> Becasuse ssh <username>@<host> still prompts for a password I run ssh-add on the local machine. The terminal doens't prompt for a password, I can login without using a password.

But I cannot run su anymore. Every input for the password results in Authentication failure.

I tried it again. But before coping the key, I added to the sudoer file. Copied key, ssh-add. But now I cannot login to my SSH shell att all?

How can I setup a key-based SSH access with the possibiluty to use su or sudo?

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