Unable to login to django admin view with valid username and password

Question

I know this question has been asked several times before but most of the question were asked long ago and old answers did not work for me.

I have a django-nonrel based app which is using dbindexer as backend and deployed on GAE. I am able to view homepage of my app which does not require login.
But when I try to login to admin view, it gives "wrong username / password"

On my local development server, if I use "manage.py runserver", then I am able to login on admin page. But If I run my app through GAE launcher, then I am not able to login.

I could gather that GAE launcher uses different django from "manage.py runserver". So, how can I make GAE (on launcher as well as on deployment server) use django-nonrel?

Other details:

app.yaml does NOT include "django" library.

settings.py  

DATABASES['native'] = DATABASES['default']
DATABASES['default'] = {'ENGINE': 'dbindexer', 'TARGET': 'native'}  

MIDDLEWARE_CLASSES = (
    'django.middleware.common.CommonMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    # Uncomment the next line for simple clickjacking protection:
    # 'django.middleware.clickjacking.XFrameOptionsMiddleware',
)

INSTALLED_APPS = (
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',

    'djangotoolbox',
    'autoload',
    'dbindexer',

    # Uncomment the next line to enable the admin:
    'django.contrib.admin',
    # Uncomment the next line to enable admin documentation:
    'django.contrib.admindocs',

    'djangoappengine',
    'testapp',
)  

urls.py

from django.conf.urls.defaults import *
from django.contrib import admin
admin.autodiscover()

urlpatterns = patterns('',
    url(r'^admin/', include(admin.site.urls)),    
)

UPDATE 1::
As @dragonx pointed out, I need to run python manage.py remote createsuperuser and create the user.

On local server, when I run 'manage.py syncdb', it fills database with initializing data which also includes creating a superuser. I use 'initial_data.yaml' inside 'fixtures' directory for this and is read automatically by syncdb command.
So, Is there any way to run "syncdb' on server side? Somehow I assumed this is happening automatically at deployment just like 'manage.py runserver' happens itself and I do not need to run app manually.

If I run manage.py remote syncdb, it blurts out following error:

google.appengine.api.datastore_errors.NeedIndexError: no matching index found.
<<ed>>some stack trace<<ed>>
The suggested index for this query is:
- kind: django_content_type
  properties:
  - name: app_label
  - name: name

Update 2:
Instead of using appcfg.py update site command, if you use python manage.py deploy from your app directory, it runs fixtures on remote server. Don't know what's doing what.
manage.py remote loaddata initdata.yaml can also be used to initialize remote database.

But even after this, I still do not see the fixtures data loaded in admin interface i.e. it seems database was not initialized or maybe admin view is badly broken. But I'd save that for another question~

Answer 1

When you run python manage.py runserver it starts a local dev server on your local machine. It has it's own dev datastore on your local machine. At some point you created an admin user in your local database.

When you deploy on app engine, it runs your code on Google's servers. There's a datastore there, but it doesn't share the data on your dev server. You'll need to create an admin user in the production datastore too. Try:

python manage.py remote createsuperuser