After upgrading cloudcontrols and cloudnets to Rocky in eqiad1, the nova metadata service stopped working. This was narrowed down to the neutron metadata agent failing to create an IP tables rule that directed metadata requests.
We created those rules by hand, and things are working now. It's possible that creation of those ports was blocked by a rabbitmq issue that @jeh has already fixed; nevertheless we need to test more to ensure that that rule is being properly maintained by neutron.