I’ve just looked at some tutorials for Keycloak and Authentik and there’s definitely a very steep learning curve for these two solutions. I feel like I need something a lot simpler to be able to fully grasp the concept.
What is the easiest solution for beginners to implement Sigle-Sign-On for their selfhosted services?
Also, Jellyfin supports LDAP backing, so OP could set up PocketID with an LLDAP backing server (minor extra complexity). Managing passwords will still be a chore as PocketID does not support neither setting them up nor syncing it with LDAP (it can read and authenticate LDAP users, not write them), but then Jellyfin can work without the OIDC plugin, just using the LDAP login approach.
Yeah, I’ve just realized that Jellyfin doesn’t have native OIDC support and requires a third-party plugin for that functionality. Maybe going all-in instead on a LDAP solution is the right way then? But I think most common selfhostable software only supports OIDC and not necessarily LDAP. I might be wrong though.