Added SSH key to Gitlab but it still asks for my credentials

Question

GitLab's HTTP pull & push are working when I enter my credentials.

But when using an added SSH key, it is always is asking for my password, which I don't know. Why is GitLab doing this? Is it a server fault?

And when calling ssh -vT [email protected] there is an error:

Permission denied (publickey)

I've tried everything, even re-installing Git, but nothing works. Even their own solution is not working, as described here: https://help.github.com/articles/error-permission-denied-publickey/

Answer 1

I had the same issue, after checking

/var/log/auth.log

I got :

*User git not allowed because account is locked
*input_userauth_request: invalid user git [preauth]
*Connection closed by IP.IP.IP.IP [preauth]

So the fix was

sudo passwd -d git

Thanks to Noah (source)

Answer 2

I had similiar problem with new installation of gitlab. After some investigation I've seen below message shown in systemctl status sshd:

Accepted publickey for git from 10.x.x.x port 50858 ssh2: RSA 67:01:..

User git from 10.x.x.x not allowed because none of user's groups are listed in AllowGroups

Adding git user into sshusers group solve my problem.
Hope this helps