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182 lines
6.8 KiB
ReStructuredText
182 lines
6.8 KiB
ReStructuredText
Deployment on PythonAnywhere
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============================
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.. index:: PythonAnywhere
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Overview
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--------
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Full instructions follow, but here's a high-level view.
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**First time config**:
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1. Pull your code down to PythonAnywhere using a *Bash console* and setup a virtualenv
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2. Set your config variables in the *postactivate* script
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3. Run the *manage.py* ``migrate`` and ``collectstatic`` commands
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4. Add an entry to the PythonAnywhere *Web tab*
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5. Set your config variables in the PythonAnywhere *WSGI config file*
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Once you've been through this one-off config, future deployments are much simpler: just ``git pull`` and then hit the "Reload" button :)
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Getting your code and dependencies installed on PythonAnywhere
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--------------------------------------------------------------
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Make sure your project is fully commited and pushed up to Bitbucket or Github or wherever it may be. Then, log into your PythonAnywhere account, open up a **Bash** console, clone your repo, and create a virtualenv:
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.. code-block:: bash
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git clone <my-repo-url> # you can also use hg
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cd my-project-name
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mkvirtualenv --python=/usr/bin/python3.5 my-project-name # or python2.7, etc
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pip install -r requirements/production.txt # may take a few minutes
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Setting environment variables in the console
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--------------------------------------------
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Generate a secret key for yourself, eg like this:
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.. code-block:: bash
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python -c 'import random;import string; print("".join(random.SystemRandom().choice(string.digits + string.ascii_letters + string.punctuation) for _ in range(50)))'
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Make a note of it, since we'll need it here in the console and later on in the web app config tab.
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Set environment variables via the virtualenv "postactivate" script (this will set them every time you use the virtualenv in a console):
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.. code-block:: bash
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vi $VIRTUAL_ENV/bin/postactivate
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**TIP:** *If you don't like vi, you can also edit this file via the PythonAnywhere "Files" menu; look in the ".virtualenvs" folder*.
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Add these exports
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.. code-block:: bash
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export DJANGO_SETTINGS_MODULE='config.settings.production'
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export DJANGO_SECRET_KEY='<secret key goes here>'
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export DJANGO_ALLOWED_HOSTS='<www.your-domain.com>'
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export DJANGO_ADMIN_URL='<not admin/>'
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export DJANGO_MAILGUN_API_KEY='<mailgun key>'
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export DJANGO_MAILGUN_SERVER_NAME='<mailgun server name>'
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export MAILGUN_SENDER_DOMAIN='<mailgun sender domain (e.g. mg.yourdomain.com)>'
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export DJANGO_AWS_ACCESS_KEY_ID=
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export DJANGO_AWS_SECRET_ACCESS_KEY=
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export DJANGO_AWS_STORAGE_BUCKET_NAME=
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export DATABASE_URL='<see below>'
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**NOTE:** *The AWS details are not required if you're using whitenoise or the built-in pythonanywhere static files service, but you do need to set them to blank, as above.*
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Database setup:
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---------------
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Go to the PythonAnywhere **Databases tab** and configure your database.
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* For Postgres, setup your superuser password, then open a Postgres console and run a `CREATE DATABASE my-db-name`. You should probably also set up a specific role and permissions for your app, rather than using the superuser credentials. Make a note of the address and port of your postgres server.
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* For MySQL, set the password and create a database. More info here: https://help.pythonanywhere.com/pages/UsingMySQL
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* You can also use sqlite if you like! Not recommended for anything beyond toy projects though.
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Now go back to the *postactivate* script and set the ``DATABASE_URL`` environment variable:
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.. code-block:: bash
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export DATABASE_URL='postgres://<postgres-username>:<postgres-password>@<postgres-address>:<postgres-port>/<database-name>'
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# or
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export DATABASE_URL='mysql://<pythonanywhere-username>:<mysql-password>@<mysql-address>/<database-name>'
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# or
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export DATABASE_URL='sqlite:////home/yourusername/path/to/db.sqlite'
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If you're using MySQL, you may need to run ``pip install mysqlclient``, and maybe add ``mysqlclient`` to *requirements/production.txt* too.
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Now run the migration, and collectstatic:
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.. code-block:: bash
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source $VIRTUAL_ENV/bin/postactivate
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python manage.py migrate
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python manage.py collectstatic
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# and, optionally
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python manage.py createsuperuser
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Configure the PythonAnywhere Web Tab
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------------------------------------
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Go to the PythonAnywhere **Web tab**, hit **Add new web app**, and choose **Manual Config**, and then the version of Python you used for your virtualenv.
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**NOTE:** *If you're using a custom domain (not on \*.pythonanywhere.com), then you'll need to set up a CNAME with your domain registrar.*
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When you're redirected back to the web app config screen, set the **path to your virtualenv**. If you used virtualenvwrapper as above, you can just enter its name.
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Click through to the **WSGI configuration file** link (near the top) and edit the wsgi file. Make it look something like this, repeating the environment variables you used earlier:
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.. code-block:: python
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import os
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import sys
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path = '/home/<your-username>/<your-project-directory>'
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if path not in sys.path:
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sys.path.append(path)
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os.environ['DJANGO_SETTINGS_MODULE'] = 'config.settings.production'
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os.environ['DJANGO_SECRET_KEY'] = '<as above>'
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os.environ['DJANGO_ALLOWED_HOSTS'] = '<as above>'
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os.environ['DJANGO_ADMIN_URL'] = '<as above>'
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os.environ['DJANGO_MAILGUN_API_KEY'] = '<as above>'
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os.environ['DJANGO_MAILGUN_SERVER_NAME'] = '<as above>'
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os.environ['DJANGO_AWS_ACCESS_KEY_ID'] = ''
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os.environ['DJANGO_AWS_SECRET_ACCESS_KEY'] = ''
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os.environ['DJANGO_AWS_STORAGE_BUCKET_NAME'] = ''
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os.environ['DATABASE_URL'] = '<as above>'
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from django.core.wsgi import get_wsgi_application
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application = get_wsgi_application()
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Back on the Web tab, hit **Reload**, and your app should be live!
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**NOTE:** *you may see security warnings until you set up your SSL certificates. If you
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want to supress them temporarily, set DJANGO_SECURE_SSL_REDIRECT to blank. Follow
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the instructions here to get SSL set up: https://help.pythonanywhere.com/pages/SSLOwnDomains/*
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Optional: static files
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----------------------
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If you want to use the PythonAnywhere static files service instead of using whitenoise or S3, you'll find its configuration section on the Web tab. Essentially you'll need an entry to match your ``STATIC_URL`` and ``STATIC_ROOT`` settings. There's more info here: https://help.pythonanywhere.com/pages/DjangoStaticFiles
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Future deployments
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------------------
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For subsequent deployments, the procedure is much simpler. In a Bash console:
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.. code-block:: bash
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workon my-virtualenv-name
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cd project-directory
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git pull
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python manage.py migrate
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python manage.py collectstatic
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And then go to the Web tab and hit **Reload**
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**TIP:** *if you're really keen, you can set up git-push based deployments: https://blog.pythonanywhere.com/87/*
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