Django trying to use wrong Database User

问题

SOLVED: I was using USERNAME, not USER from previously attempting Postgres driver.

I'm trying to connect my django project to an RDS MySQL database. I can connect fine using my credentials in MySQL Workbench and mysql command line.

I've set the AWS Security Group and VPC Security Group with All traffic | All | All | 0.0.0.0/0

Let's say my credentials are User: abc Password: password

When I run python manage.py migrate it is attempting to login with Mike, not abc for some unknown reason (Mike is the Windows User). How do I prevent this? Attached is my settings.py:

# Database
# https://docs.djangoproject.com/en/1.10/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'playercomp',
        'USERNAME': 'abc',
        'PASSWORD': 'password',
        'HOST': 'xxx.xxx.us-west-2.rds.amazonaws.com',
        'PORT': '3306',
    }
}

manage.py

#!/usr/bin/env python
try:
    import pymysql
    pymysql.install_as_MySQLdb()
except ImportError:
    print "Failed to import pymysql" 
import os
import sys

if __name__ == "__main__":
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "playercomp.settings")
    try:
        from django.core.management import execute_from_command_line
    except ImportError:
        # The above import may fail for some other reason. Ensure that the
        # issue is really that Django is missing to avoid masking other
        # exceptions on Python 2.
        try:
            import django
        except ImportError:
            raise ImportError(
                "Couldn't import Django. Are you sure it's installed and "
                "available on your PYTHONPATH environment variable? Did you "
                "forget to activate a virtual environment?"
            )
        raise
    execute_from_command_line(sys.argv)

Error Trace:

    Traceback (most recent call last):
  File "manage.py", line 27, in <module>
    execute_from_command_line(sys.argv)
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\core\management\__init__.py", line 367, in execute_from_command_line
    utility.execute()
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\core\management\__init__.py", line 359, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\core\management\base.py", line 294, in run_from_argv
    self.execute(*args, **cmd_options)
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\core\management\base.py", line 342, in execute
    self.check()
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\core\management\base.py", line 374, in check
    include_deployment_checks=include_deployment_checks,
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\core\management\commands\migrate.py", line 61, in _run_checks
    issues = run_checks(tags=[Tags.database])
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\core\checks\registry.py", line 81, in run_checks
    new_errors = check(app_configs=app_configs)
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\core\checks\database.py", line 10, in check_database_backends
    issues.extend(conn.validation.check(**kwargs))
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\db\backends\mysql\validation.py", line 9, in check
    issues.extend(self._check_sql_mode(**kwargs))
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\db\backends\mysql\validation.py", line 13, in _check_sql_mode
    with self.connection.cursor() as cursor:
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\db\backends\base\base.py", line 231, in cursor
    cursor = self.make_debug_cursor(self._cursor())
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\db\backends\base\base.py", line 204, in _cursor
    self.ensure_connection()
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\db\backends\base\base.py", line 199, in ensure_connection
    self.connect()
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\db\utils.py", line 94, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\db\backends\base\base.py", line 199, in ensure_connection
    self.connect()
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\db\backends\base\base.py", line 171, in connect
    self.connection = self.get_new_connection(conn_params)
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\django\db\backends\mysql\base.py", line 263, in get_new_connection
    conn = Database.connect(**conn_params)
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\pymysql\__init__.py", line 90, in Connect
    return Connection(*args, **kwargs)
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\pymysql\connections.py", line 688, in __init__
    self.connect()
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\pymysql\connections.py", line 906, in connect
    self._request_authentication()
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\pymysql\connections.py", line 1114, in _request_authentication
    auth_packet = self._read_packet()
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\pymysql\connections.py", line 981, in _read_packet
    packet.check_error()
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\pymysql\connections.py", line 393, in check_error
    err.raise_mysql_exception(self._data)
  File "C:\Users\Mike\Envs\playercomp\lib\site-packages\pymysql\err.py", line 107, in raise_mysql_exception
    raise errorclass(errno, errval)
django.db.utils.OperationalError: (1045, u"Access denied for user 'Mike'@'host-yy-yy.zzz.zz.com' (using password: YES)")

回答1:

I added a field 'USER': 'abc' to the DATABASES default, and that worked.

来源：https://stackoverflow.com/questions/40669315/django-trying-to-use-wrong-database-user