python - Django，Zappa - 运行时错误 : populate() isn't reentrant

Question

我是 django 和 zappa 的初学者。我正在尝试在 AWS lambda 上使用 zappa 部署 django 应用程序。另外，我想连接 RDS 数据库 (postgres)。

为了创建数据库，我输入了“zappa manage dev create_db”然后，出现如下错误信息。而且我不知道如何解决这个问题。Internet 上的其他解决方案对我不起作用。

populate() isn't reentrant: RuntimeError
Traceback (most recent call last):
  File "/var/task/handler.py", line 509, in lambda_handler
    return LambdaHandler.lambda_handler(event, context)
  File "/var/task/handler.py", line 240, in lambda_handler
    return handler.handler(event, context)
  File "/var/task/handler.py", line 372, in handler
    app_function = get_django_wsgi(self.settings.DJANGO_SETTINGS)
  File "/var/task/zappa/ext/django_zappa.py", line 20, in get_django_wsgi
    return get_wsgi_application()
  File "/var/task/django/core/wsgi.py", line 12, in get_wsgi_application
    django.setup(set_prefix=False)
  File "/var/task/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/var/task/django/apps/registry.py", line 81, in populate
    raise RuntimeError("populate() isn't reentrant")
RuntimeError: populate() isn't reentrant

zappa_settings.json 是

{
    "dev": {
        "django_settings": "test_zappa_13.settings",
        "aws_region": "ap-northeast-2",
        "profile_name": "default",
        "project_name": "test-zappa-13",
        "runtime": "python3.6",
        "s3_bucket": "zappa-rw2difr3r"
    }
}

django settings.py 是

INSTALLED_APPS = [ 'zappa_django_utils', ... ]

DATABASES = { 'default': { 'ENGINE': 'django.db.backends.postgresql_psycopg2', 'NAME': 'blah', 'USER': 'blahblah', 'PASSWORD': 'blahblah', 'HOST': 'postgres-instance-1.test1234.ap-northeast-2.rds.amazonaws.com', 'PORT': 5432, } } ...

并且，Django 版本 == 2.2，Python 版本 == 3.6，Zappa 版本 == 0.45.1

请帮我解决这个问题。

引用资料

1. https://www.codingforentrepreneurs.com/blog/rds-database-serverless-django-zappa-aws-lambda
2. https://www.agiliq.com/blog/2019/01/complete-serverless-django/

Answer 1

我遇到了和你完全一样的错误。就我而言，问题在于我只是忘记了在更新设置后再次运行“zappa update dev”来更新部署。