Connect Django to Google Cloud SQL

Question

I\'m trying to connect Django to the Google cloud SQL, working with python 2.7 and django 1.5 under windows. I went through the instructions on this page: https://developers

Answer 1

Example connection to Google Cloud SQL in Django:

AppEngine Standard, Python 2.7:

try:
    import MySQLdb  # noqa: F401
except ImportError:
    import pymysql
    pymysql.install_as_MySQLdb()

if os.getenv('SERVER_SOFTWARE', '').startswith('Google App Engine'):
    # Running on production App Engine, so connect to Google Cloud SQL using
    # the unix socket at /cloudsql/
    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.mysql',
            'HOST': '/cloudsql/',
            'NAME': '',
            'USER': '',
            'PASSWORD': '',
        }
    }
else:
    # Running locally so connect to either a local MySQL instance or connect to
    # Cloud SQL via the proxy. To start the proxy via command line:
    #
    #     $ cloud_sql_proxy -instances=[INSTANCE_CONNECTION_NAME]=tcp:3306
    #
    # See https://cloud.google.com/sql/docs/mysql-connect-proxy
    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.mysql',
            'HOST': '127.0.0.1', # DB's IP address
            'PORT': '3306',
            'NAME': '',
            'USER': '',
            'PASSWORD': '',
        }
    }

Source: GCP Python Django Samples AppEngine Standard Python 2.7

---

AppEngine Standard, Python 3.7:

# Install PyMySQL as mysqlclient/MySQLdb to use Django's mysqlclient adapter
# See https://docs.djangoproject.com/en/2.1/ref/databases/#mysql-db-api-drivers
# for more information
import pymysql  # noqa: 402
pymysql.install_as_MySQLdb()

if os.getenv('GAE_APPLICATION', None):
    # Running on production App Engine, so connect to Google Cloud SQL using
    # the unix socket at /cloudsql/
    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.mysql',
            'HOST': '/cloudsql/[YOUR-CONNECTION-NAME]',
            'USER': '[YOUR-USERNAME]',
            'PASSWORD': '[YOUR-PASSWORD]',
            'NAME': '[YOUR-DATABASE]',
        }
    }
else:
    # Running locally so connect to either a local MySQL instance or connect to
    # Cloud SQL via the proxy. To start the proxy via command line:
    #
    #     $ cloud_sql_proxy -instances=[INSTANCE_CONNECTION_NAME]=tcp:3306
    #
    # See https://cloud.google.com/sql/docs/mysql-connect-proxy
    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.mysql',
            'HOST': '127.0.0.1', # DB's IP address
            'PORT': '3306',
            'NAME': '[YOUR-DATABASE]',
            'USER': '[YOUR-USERNAME]',
            'PASSWORD': '[YOUR-PASSWORD]',
        }
    }

Source GCP Python Django Samples AppEngine Standard Python 3.7

---

AppEngine Flexible:

DATABASES = {
    'default': {
        # If you are using Cloud SQL for MySQL rather than PostgreSQL, set
        # 'ENGINE': 'django.db.backends.mysql' instead of the following.
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'polls',
        'USER': '',
        'PASSWORD': '',
        # For MySQL, set 'PORT': '3306' instead of the following. Any Cloud
        # SQL Proxy instances running locally must also be set to tcp:3306.
        'PORT': '5432',
    }
}
# In the flexible environment, you connect to CloudSQL using a unix socket.
# Locally, you can use the CloudSQL proxy to proxy a localhost connection
# to the instance
DATABASES['default']['HOST'] = '/cloudsql/'
if os.getenv('GAE_INSTANCE'):
    pass
else:
    DATABASES['default']['HOST'] = '127.0.0.1' # DB's IP address

Source GCP Python Django Samples AppEngine Flexible