OpenStack Dashboard (Horizon)

Cannot import name timezone

Bug #1049570 reported by Edward on 2012-09-12

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	OpenStack Dashboard (Horizon)	Invalid	Undecided	Gabriel Hurley
	devstack	Invalid	Undecided	Unassigned

Bug Description

With latest code installation with devstack, you will get " internal server error 500" when accessing dashboard login page. The horizon log tell that an error "importing middleware horizon.middleware: cannot import name timezone". I verified the timezone module in django.utils exists there.

============================Horizon Log============================
...
[Wed Sep 12 10:43:54 2012] [error] Warning: Could not import Horizon dependencies. This is normal during installation.
[Wed Sep 12 10:43:54 2012] [error] Warning: Could not import Horizon dependencies. This is normal during installation.
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] mod_wsgi (pid=32481): Exception occurred processing WSGI script '/opt/stack/horizon/openstack_dashboard/wsgi/django.wsgi'.
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] mod_wsgi (pid=32482): Exception occurred processing WSGI script '/opt/stack/horizon/openstack_dashboard/wsgi/django.wsgi'.
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] Traceback (most recent call last):
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] File "/usr/lib/pymodules/python2.7/django/core/handlers/wsgi.py", line 250, in __call__
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] Traceback (most recent call last):
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] File "/usr/lib/pymodules/python2.7/django/core/handlers/wsgi.py", line 250, in __call__
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] self.load_middleware()
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] self.load_middleware()
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] File "/usr/lib/pymodules/python2.7/django/core/handlers/base.py", line 47, in load_middleware
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] File "/usr/lib/pymodules/python2.7/django/core/handlers/base.py", line 47, in load_middleware
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] raise exceptions.ImproperlyConfigured('Error importing middleware %s: "%s"' % (mw_module, e))
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] raise exceptions.ImproperlyConfigured('Error importing middleware %s: "%s"' % (mw_module, e))
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] ImproperlyConfigured: Error importing middleware horizon.middleware: "cannot import name timezone"
[Wed Sep 12 10:43:54 2012] [error] [client 192.168.156.156] ImproperlyConfigured: Error importing middleware horizon.middleware: "cannot import name timezone"
=================================================================

Revision history for this message

Gabriel Hurley (gabriel-hurley) wrote on 2012-09-18:

This isn't a problem in Horizon master. If this is currently an issue in devstack my guess would be a missing dependency (such as the pytz module). Adding devstack for further investigation, but closing for Horizon.

Changed in horizon:
assignee:	nobody → Gabriel Hurley (gabriel-hurley)
status:	New → Invalid

Revision history for this message

Edward (zhang-hare) wrote on 2013-01-07:

This problem is due to the old version of django, e.g version 1.3 on Ubuntu 11.04. This can be resolved by upgrade django to 1.4+. use following command to upgrade and verify.
sudo apt-get remove --purge python-django
sudo pip install --upgrade django
django-admin --version

Here's a link of how to-do.
http://stackoverflow.com/questions/10564757/turnkey-django-how-to-upgrade-django-to-1-4

My suggestion is the install script in devstack need to check the django version to upgrade if necessary.

Revision history for this message

Tom Fifield (fifieldt) wrote on 2013-03-19:

As Ubuntu 11.04 is marked as 'end of life', making this bug invalid