Django 1.6 and Python 3 on OpenShift

This git repository helps you get up and running quickly w/ a Django 1.6 and Python 3.3 installation on OpenShift. The Django project name used in this repo is 'openshift' but you can feel free to change it. Right now the backend is sqlite3 and the database runtime is found in $OPENSHIFT_DATA_DIR/db.sqlite3.

Before you push this app for the first time, you will need to change the Django admin password. Then, when you first push this application to the cloud instance, the sqlite database is copied from wsgi/openshift/db.sqlite3 to $OPENSHIFT_DATA_DIR/ with your newly changed login credentials. Other than the password change, this is the stock database that is created when python manage.py syncdb is run with only the admin app installed.

On subsequent pushes, a python manage.py syncdb is executed to make sure that any models you added are created in the DB. If you do anything that requires an alter table, you could add the alter statements in GIT_ROOT/.openshift/action_hooks/alter.sql and then use GIT_ROOT/.openshift/action_hooks/deploy to execute that script (make sure to back up your database w/ rhc app snapshot save first :) )

With this you can install Django 1.6 with Python 3.3 on OpenShift.

Running on OpenShift

Create an account at http://openshift.redhat.com/

Install the RHC client tools if you have not already done so:

 sudo gem install rhc

Create a python-3.3 application

 rhc app create djangopy3 python-3.3

Or create the application python-3.3 with the admin web console.

 https://www.openshift.com/

Connect into your OpenShift account and Add Application and select Python 3.3.

Create the Python application with the name djangopy3.

Add this upstream repo

 cd djangopy3
 git remote add upstream -m master git://github.com/rancavil/django-py3-openshift-quickstart.git
 git pull -s recursive -X theirs upstream master

Note:

If you want to use the Redis-Cloud with Django see the wiki

Then push the repo upstream

 git push

Here, the admin user name and password will be displayed, so pay special attention.

That's it. You can now checkout your application at:

 http://djangopy3-$yournamespace.rhcloud.com

Admin user name and password

As the git push output scrolls by, keep an eye out for a line of output that starts with Django application credentials:. This line contains the generated admin password that you will need to begin administering your Django app. This is the only time the password will be displayed, so be sure to save it somewhere. You might want to pipe the output of the git push to a text file so you can grep for the password later.

When you make:

  git push

In the console output, you must find something like this:

 remote: Django application credentials:
 remote:    user: admin
 remote:    SY1ScjQGb2qb

Or you can go to SSH console, and check the CREDENTIALS file located in $OPENSHIFT_DATA_DIR.

 cd $OPENSHIFT_DATA_DIR
 vi CREDENTIALS

You should see the output:

 Django application credentials:
         user: admin
         SY1ScjQGb2qb

After, you can change the password in the Django admin console.

Django project directory structure

 django3/
      .gitignore
      .openshift/
           README.md
           action_hooks/  (Scripts for deploy the application)
                build
                post_deploy
                pre_build
                deploy
                secure_db.py
           cron/
           markers/
      setup.py   (Setup file with de dependencies and required libs)
      wsgi.py (This file execute Django over on WSGI for testing)
      README.md
      requirements.txt (for additionals packages dependencies)
      libs/ (Adicional libraries)
      data/ (For not-externally exposed wsgi code)
      wsgi/ (Externally exposed wsgi goes)
           application (Script to execute the application on wsgi)
           openshift/  (Django project directory)
                __init__.py
                manage.py
                openshiftlibs.py
                openshiftstaticfiles.py (lib to use static files on the same server)
                settings.py
                urls.py
                views.py
                templates/
                     home/
                        home.html (Default home page, change it)
           static/ (Public static content gets served here)

From HERE you can start with your own application.

Important

Django doesn't recommend use of its static file (like css, js) on production server for a number of reasons.

For use Django on wsgi and serve the static files in the same server, it is necesary use the additional package static3. You can install it in the setup.py

On OpenShift, Django is served through wsgi, like cherrypy, this package can be installed with setup.py

 from setuptools import setup

 import os

 # Put here required packages or
 # Uncomment one or more lines below in the install_requires section
 # for the specific client drivers/modules your application needs.
 packages = ['Django<=1.6',
             'static3',  # If you want serve the static files in the same server
              #  'mysql-connector-python',
              #  'pymongo',
              #  'psycopg2',
 ]

 if 'REDISCLOUD_URL' in os.environ and 'REDISCLOUD_PORT' in os.environ and 'REDISCLOUD_PASSWORD' in os.environ:
       packages.append('django-redis-cache')
       packages.append('hiredis')

 setup(name='YourAppName', version='1.0',
       description='OpenShift Python-3.3 / Django-1.6 Community Cartridge based application',
       author='Your Name', author_email='admin@example.org',
       url='https://pypi.python.org/pypi',
       install_requires=packages,
 )