Post installation, Horizon login page simple states "Something went wrong!".

[Kevin Carter]

Post installation, the Horizon Login page will not load without the use of Debug mode being enabled in "/etc/openstack-dashboard/local_settings.py".

* The installation was done On Precise with all available updates being installed prior to the installation.
* Both the proposed packages as well as the updates were enabled in the apt sources list.

While I am assuming this is a horizon specific issue, it may very well be related to "openstack-dashboard" Here is the Openstack Dashboard Package that I have installed.
openstack-dashboard:
  Installed: 1:2013.2~b3-0ubuntu1~cloud0

Openstack-Dashboard is being used with Apache2. The Apache error logs do not reveal anything. I have also attempted to run the openstack-dashboard using manage.py::

/usr/share/openstack-dashboard/manage.py runserver <LOCAL-IP>:80 --verbosity=4 --traceback --insecure --settings 'openstack_dashboard.settings' --nothreading

While running in this mode, the verbose output shows a "500" error but does not provide any other information. When Debug mode is enabled the dashboard loads fine under both the local command and apache2; I am able to navigate freely although its very slow.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: python-django-horizon 1:2013.2~b3-0ubuntu1~cloud0 [origin: Canonical]
ProcVersionSignature: Ubuntu 3.2.0-49.75-virtual 3.2.46
Uname: Linux 3.2.0-49-virtual x86_64
ApportVersion: 2.0.1-0ubuntu17.4
Architecture: amd64
CrashDB: cloud_archive
Date: Wed Oct 2 01:44:38 2013
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: horizon
UpgradeStatus: No upgrade log present (probably fresh install)

[Kevin Carter (kevin-carter)]

This issue is resolved if you set :

ALLOWED_HOSTS = ['*']

In the local_settings.py file found in /etc/openstack_dashboard
It seems this setting is required in newer versions of Django.

[Sunnyvale CI Bot (sunnyvale-ci-bot)]

We currently patch the shipped settings file to include this:

+# By default, validation of the HTTP Host header is disabled. Production
+# installations should have this set accordingly. For more information
+# see https://docs.djangoproject.com/en/dev/ref/settings/.
+ALLOWED_HOSTS = '*'

Does this not work as-is, or was it removed post-installation from the default config by some deployment tool?