today superset.wikimedia.org was moved to https://wikitech.wikimedia.org/wiki/CAS-SSO. This means that upon logging in, you'll be redirected to idp.wikimedia.org to input your Wikimedia Developer account user/password (basically the ones that you use for Wikitech) and then redirected back to Superset. The main difference is that the user/password combination is not different anymore from what you have been using for Turnilo (that was moved some days ago to CAS-SSO as well).

If you have any trouble in logging in, please let us know via Phabricator (Analytics tag) or via IRC (#wikimedia-analytics on Freenode).

Thanks!

Luca (on behalf of the Analytics team)