Getting permission denied (public key) on gitlab

Question

My problem is that I can\'t push or fetch from GitLab. However, I can clone (via HTTP or via SSH). I get this error when I try to push :

Permission de

Answer 1

The problem for me was, that I switched UsePAM from yes to no in the SSH configuration file under /etc/ssh/sshd_config. With UsePAM yes everything works perfectly.

Answer 2

I added my ~/.ssh/id_rsa.pub to the list of known SSH Keys in my GitLab settings https://gitlab.com/profile/keys. That solved the problem for me. :-)

Answer 3

Step 1: Added a config file in ~/.ssh/config file which looks like

   User git
   Hostname gitlab.com
   IdentityFile ~/.ssh/id_rsa_gitlab
   TCPKeepAlive yes
   IdentitiesOnly yes

Step 2: Just clone the git repo WITHOUT sudo.
Documentation: https://gitlab.com/help/ssh/README#working-with-non-default-ssh-key-pair-paths

Answer 4

In my case, it wasn't a gitlab problem, but a sshd configuration one. The ssh server didn't allow connection except for a list of users. The user git, the one connecting remotely to gitlab, wasn't in that list. So, check this before anything else.

You can check your ssh server configuration in /etc/ssh/sshd_config. If you have a line with the option AllowUsers, add git to it:

AllowUsers user1 user2 user3 git

Answer 5

I have gitlab running with docker, this is what I did to fix my problem.

Found that inside docker /var/log/gitlab/sshd/current there were multiple occurences of a message:

Authentication refused: bad ownership or modes for file /var/opt/gitlab/.ssh/authorized_keys

After which I changed ownership of that file from 99:users to git:users with:

chown git:users authorized_keys

Answer 6

Go to the terminal and regenerate the ssh key again. Type ssh-keygen. It will ask you where you want to save it, type the path.

Then copy the public key to gitlabs platform. It usually starts with ssh-rsa.