Django DATABASE_ROUTERS don't work

[李华才]

#  setting.py
DATABASES = {
    'remote': {
        'ENGINE': 'django.db.backends.mysql',
        'HOST': '10.0.3.57',
        'NAME': 'fast_last',  
        'USER': 'faster', 
        'PASSWORD': 'mypassword',  
        'TEST': {
            'MIRROR': 'default', 
        }
    },
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'fast', 
        'USER': 'root', 
        'PASSWORD': 'root',  
        'TEST': {
            'NAME': 'test_fast_last',  
        }
    }
}

DATABASE_ROUTERS = ['FasterRunner.database.AutoChoiceDataBase']


# database.py

import platform
class AutoChoiceDataBase:
    run_system = platform.system()
    is_windows = run_system == 'Windows'

    def db_for_read(self, model, **hints):
        if self.is_windows:
            return 'default'
        else:
            return 'remote'

    def db_for_write(self, model, **hints):
        if self.is_windows:
            return 'default'
        else:
            return 'remote'


*when I push run this in Liunx server,it still use the default config.*
python manage.py runserver 0.0.0.0:8000

  File 
"/home/faster/.virtualenvs/fasterenv/lib/python3.6/site-packages/MySQLdb/connections.py",
 
line 204, in __init__
    super(Connection, self).__init__(*args, **kwargs2)
django.db.utils.OperationalError: (1045, "Access denied for user 
'root'@'localhost' (using password: YES)")




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