Current code of spa_ui assumes that the API endpoint is http://localhost:3000/ so it works in development but not in the appliance: https://github.com/ManageIQ/manageiq/blob/master/spa_ui/self_service/client/app/config/api.config.js#L5 I removed the endpoint and left just '' there, ran gulp build again and it started working. I used an appliance from 29. September - upstream build.
Milan, is this still the case with 5.5.0.3
I think I tested it on 5.5.0.3. Did not file the version because it is in upstream master (and it is still there according to the link).
This should be fixed with https://github.com/ManageIQ/manageiq/pull/4649. It can be tested with the latest nightly build on http://releases.manageiq.org/
Verified in 5.5.0.5-beta1.1.20151007163855_ed40d96 Login works.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2015:2551