Hello,
Wikimedia is deprecating and phasing out unencrypted HTTP (
https://phabricator.wikimedia.org/T238720), as part of this effort
http://gitlab.wikimedia.org now listens on port 433 only. It should not
cause any issue since we have always serve GitLab over HTTPS.
It might be possible that a bot or a local config relied on http:// and
those unlikely case will now be broken. The change is
https://gerrit.wikimedia.org/r/c/operations/puppet/+/904843 If you see any
issue, please reach out on Phabricator task above.
Greetings