获取数据库配置不正确。请提供名称值错误

Question

我遇到了这个问题settings.DATABASES is improperly configured. Please supply the NAME value，但它对我不起作用。

在应用 python manage.py makemigrations 时，出现错误

Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 367, in  execute_from_command_line
utility.execute()
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 359, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/core/management/base.py", line 294, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/core/management/base.py", line 345, in execute
output = self.handle(*args, **options)
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/core/management/commands/makemigrations.py", line 106, in handle
loader.check_consistent_history(connection)
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/db/migrations/loader.py", line 276, in check_consistent_history
applied = recorder.applied_migrations()
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/db/migrations/recorder.py", line 65, in applied_migrations
self.ensure_schema()
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/db/migrations/recorder.py", line 52, in ensure_schema
if self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor()):
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 233, in cursor
cursor = self.make_cursor(self._cursor())
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 204, in _cursor
self.ensure_connection()
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 199, in ensure_connection
self.connect()
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 170, in connect
conn_params = self.get_connection_params()
File "/home/rishav/EvalAI/venv/local/lib/python2.7/site-packages/django/db/backends/postgresql/base.py", line 158, in get_connection_params
"settings.DATABASES is improperly configured. "
 django.core.exceptions.ImproperlyConfigured: settings.DATABASES is improperly configured. Please supply the NAME value.

我的开发数据库

DATABASES = {
'default': {
    'ENGINE': 'django.db.backends.postgresql_psycopg2',
    'NAME': 'evalai',
    'USER': 'rishav',
    'PASSWORD': 'rishav',
    'HOST': 'localhost',
    'PORT': 5432,
  }
 }

还有产品数据库

DATABASES = {
    'default': {
    'ENGINE': 'django.db.backends.postgresql_psycopg2',
    'NAME': os.environ.get('RDS_DB_NAME', ""),
    'USER': os.environ.get('RDS_USERNAME', ""),
    'PASSWORD': os.environ.get('RDS_PASSWORD', ""),
    'HOST': os.environ.get('RDS_HOSTNAME', ""),
    'PORT': os.environ.get('RDS_PORT', ""),
  }
}

如何解决这个问题？

Answer 1

听起来您的生产环境变量可能未设置 - 我怀疑这是正在发生的事情。

登录到您的生产服务器并确保您的 Django 进程可以访问 RDS_DB_NAME、RDS_USERNAME 等作为环境变量。

ALSO：如果您遇到问题，您可能想尝试硬编码假凭据，而不是使用环境变量。这至少会让你进入下一个错误，应该是无效的凭据或类似的东西。这将确认环境变量是问题所在并且需要修复。

更新：如果您想尝试硬编码凭据，请为您的生产数据库配置执行以下操作：

DATABASES = {
    'default': {
    'ENGINE': 'django.db.backends.postgresql_psycopg2',
    'NAME': 'test',
    'USER': 'test',
    'PASSWORD': 'test',
    'HOST': 'localhost',
    'PORT': 5432,
  }
}

这将“硬编码”您的虚假凭据。然后，您可以部署此应用程序并查看您遇到了什么错误。