
The playbook var overrides horizon to the non-RFC compliant container name, which causes Horizon not to start when debug is disabled. The horizon-error.log error generated is: http://cdn.pasteraw.com/80bqvxborw4f3a74yl7mb7get40lkit And the reason the error does NOT occur when debug is enabled can be found here: https://github.com/django/django/blob/master/django/http/request.py#L100-L112 Change-Id: I10aaeec856bd2ba3c38cb2b209d3f0cc9cc3ec0f