Django + PostgreSQL Google Cloud Flexible App Engine deployment template

app.yaml

runtime: python

# the PROJECT-DIRECTORY is the one with settings.py and wsgi.py
entrypoint: gunicorn -b :$PORT PROJECT-DIRECTORY.wsgi # specific to a GUnicorn HTTP server deployment
env: flex # for Google Cloud Flexible App Engine

# any environment variables you want to pass to your application.
# accessible through os.environ['VARIABLE_NAME']
env_variables:
# the secret key used for the Django app (from PROJECT-DIRECTORY/settings.py)
  SECRET_KEY: 'DJANGO-SECRET-KEY' 
  DEBUG: 'False' # always False for deployment
  
# everything after /cloudsql/ can be found by entering >> gcloud sql instances describe DATABASE-NAME << in your Terminal
# the DATABASE-NAME is the name you gave your project's PostgreSQL database
# the second line from the describe output called connectionName can be copied and pasted after /cloudsql/
  DB_HOST: '/cloudsql/PROJECT-ID:COMPUTE-ENGINE-ZONE:DATABASE-NAME'
  DB_PORT: '5432' # PostgreSQL port
  DB_NAME: 'DATABASE-NAME'
  DB_USER: 'DATABASE-USERNAME' # either 'postgres' (default) or one you created on the PostgreSQL instance page
  DB_PASSWORD: 'DATABASE-PASSWORD'
  
  STATIC_URL: 'https://storage.googleapis.com/BUCKET-NAME/static/' # this is the url that you sync static files to
  
handlers:
- url: /static
  static_dir: static

beta_settings:
# from command >> gcloud sql instances describe DATABASE-NAME <<
  cloud_sql_instances: PROJECT-ID:COMPUTE-ENGINE-ZONE:DATABASE-NAME 

runtime_config:
  python_version: 3 # enter your Python version BASE ONLY here. Enter 2 for 2.7.9 or 3 for 3.6.4

from my article on deploying a django project to google cloud