Flask_MongoEngine在Webfaction上不起作用嗎？

Question

我目前正在嘗試將使用Python Flask框架構建的網站部署到Webfaction 。 我已經部署了MongoDB，可以從MongoDB交互式解釋器成功連接到它：

[celli@web498 ~]$ mongo localhost:18209/admin
MongoDB shell version: 3.0.2
connecting to: localhost:18209/admin
> db.auth("awesomeusername", "anawesomepassword")
1

啟動網站時，它可以使用我的flask config.py文件中的以下憑據成功連接：

MONGODB_SETTINGS = {'db'：'tc'，'port'：18209，
'username'：'awesomeusername'，'password'：'anawesomepassword'，}

但是，當我訪問進行查詢的頁面時，出現以下錯誤。 這段代碼在另一台服務器上運行良好，因此錯誤出在我的MongoDB實例的設置或與其連接中。 我也感到奇怪的是，建立連接的工作正常，但是查詢它會創建此Authentication failed錯誤。

知道我該如何解決嗎？ 歡迎所有提示！

File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/flask_login.py", line 758, in decorated_view
 return func(*args, **kwargs)
File "/home/celli/webapps/tc/tc/app/views/webviews.py", line 220, in myTickets
 userDocs = UserDocument.objects(id__in=[ticket.doc_id for ticket in userTickets])
File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/mongoengine/queryset/manager.py", line 37, in __get__
 queryset = queryset_class(owner, owner._get_collection())
File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/mongoengine/document.py", line 168, in _get_collection
 db = cls._get_db()
File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/mongoengine/document.py", line 162, in _get_db
 return get_db(cls._meta.get("db_alias", DEFAULT_CONNECTION_NAME))
File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/mongoengine/connection.py", line 143, in get_db
 source=conn_settings['authentication_source'])
File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/pymongo/database.py", line 978, in authenticate
 self.connection._cache_credentials(self.name, credentials)
File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/pymongo/mongo_client.py", line 467, in _cache_credentials
 auth.authenticate(credentials, sock_info, self.__simple_command)
File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/pymongo/auth.py", line 475, in authenticate
 auth_func(credentials[1:], sock_info, cmd_func)
File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/pymongo/auth.py", line 450, in _authenticate_default
 return _authenticate_scram_sha1(credentials, sock_info, cmd_func)
File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/pymongo/auth.py", line 238, in _authenticate_scram_sha1
 sasl_start, sasl_continue)
File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/pymongo/auth.py", line 185, in _scram_sha1_conversation
 res, _ = cmd_func(sock_info, source, sasl_start)
File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/pymongo/mongo_client.py", line 703, in __simple_command
 helpers._check_command_response(response, None, msg)
File "/home/celli/webapps/tc/venv/lib/python2.7/site-packages/pymongo/helpers.py", line 182, in _check_command_response
 raise OperationFailure(msg % errmsg, code, response)
OperationFailure: command SON([('saslStart', 1), ('mechanism', 'SCRAM-SHA-1'), ('autoAuthorize', 1), ('payload', Binary('n,,n=awesomeusername,r=NjAxNTEwMjc5MzAy', 0))]) on namespace tc.$cmd failed: Authentication failed.

Answer 1

MongoDB的用戶是基於數據庫的 。 在您的示例中，您顯示您已連接到admin數據庫，但錯誤消息只是告訴您您的用戶正在嘗試通過tc數據庫進行身份驗證。 您的用戶可能在tc上沒有任何作用。

（另一種可能性是tc不是您要連接的數據庫；您需要在連接參數/字符串中指定正確的數據庫名稱）。