<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=396257) </details> <!--IssueSummary end--> gitlab-shell helm charts doesn't offer possibility to override or add extra arguments in sshd_config, it is blocking if you want to allow user connections with signed keys by an external authority like Teleport. We need to specify 'Match User' and 'TrustedUserCAKeys' sections as mentionned in these links: https://martin.heiland.io/2020/03/18/teleport-gitlab/ https://goteleport.com/docs/server-access/guides/openssh/