python - 无法连接到端点 URL：“http://127.0.0.1:8000/”

Question

我在 docker 中运行 Python Falcon 应用程序。在将它部署到弹性 beanstalk 之前，我正在尝试在本地工作。当我尝试连接在另一个 Docker 中运行的本地 DynamoDB 时，我收到以下错误。

hayirlisi_test | Traceback (most recent call last):
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/urllib3/connection.py", line 159, in _new_conn
hayirlisi_test |     (self._dns_host, self.port), self.timeout, **extra_kw)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/urllib3/util/connection.py", line 80, in create_connection
hayirlisi_test |     raise err
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/urllib3/util/connection.py", line 70, in create_connection
hayirlisi_test |     sock.connect(sa)
hayirlisi_test | ConnectionRefusedError: [Errno 111] Connection refused
hayirlisi_test |
hayirlisi_test | During handling of the above exception, another exception occurred:
hayirlisi_test |
hayirlisi_test | Traceback (most recent call last):
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/httpsession.py", line 258, in send
hayirlisi_test |     decode_content=False,
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/urllib3/connectionpool.py", line 638, in urlopen
hayirlisi_test |     _stacktrace=sys.exc_info()[2])
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/urllib3/util/retry.py", line 343, in increment
hayirlisi_test |     raise six.reraise(type(error), error, _stacktrace)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/urllib3/packages/six.py", line 686, in reraise
hayirlisi_test |     raise value
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
hayirlisi_test |     chunked=chunked)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/urllib3/connectionpool.py", line 354, in _make_request
hayirlisi_test |     conn.request(method, url, **httplib_request_kw)
hayirlisi_test |   File "/usr/local/lib/python3.6/http/client.py", line 1239, in request
hayirlisi_test |     self._send_request(method, url, body, headers, encode_chunked)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/awsrequest.py", line 125, in _send_request
hayirlisi_test |     method, url, body, headers, *args, **kwargs)
hayirlisi_test |   File "/usr/local/lib/python3.6/http/client.py", line 1285, in _send_request
hayirlisi_test |     self.endheaders(body, encode_chunked=encode_chunked)
hayirlisi_test |   File "/usr/local/lib/python3.6/http/client.py", line 1234, in endheaders
hayirlisi_test |     self._send_output(message_body, encode_chunked=encode_chunked)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/awsrequest.py", line 152, in _send_output
hayirlisi_test |     self.send(msg)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/awsrequest.py", line 236, in send
hayirlisi_test |     return super(AWSConnection, self).send(str)
hayirlisi_test |   File "/usr/local/lib/python3.6/http/client.py", line 964, in send
hayirlisi_test |     self.connect()
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/urllib3/connection.py", line 181, in connect
hayirlisi_test |     conn = self._new_conn()
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/urllib3/connection.py", line 168, in _new_conn
hayirlisi_test |     self, "Failed to establish a new connection: %s" % e)
hayirlisi_test | urllib3.exceptions.NewConnectionError: <botocore.awsrequest.AWSHTTPConnection object at 0x7fb2fd187128>: Failed to establish a new connection: [Errno 111] Connection r
efused
hayirlisi_test |
hayirlisi_test | During handling of the above exception, another exception occurred:
hayirlisi_test |
hayirlisi_test | Traceback (most recent call last):
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/gunicorn/workers/sync.py", line 135, in handle
hayirlisi_test |     self.handle_request(listener, req, client, addr)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/gunicorn/workers/sync.py", line 176, in handle_request
hayirlisi_test |     respiter = self.wsgi(environ, resp.start_response)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/falcon/api.py", line 244, in __call__
hayirlisi_test |     responder(req, resp, **params)
hayirlisi_test |   File "/code/app.py", line 54, in on_get
hayirlisi_test |     'WriteCapacityUnits': 5
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/client.py", line 357, in _api_call
hayirlisi_test |     return self._make_api_call(operation_name, kwargs)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/client.py", line 648, in _make_api_call
hayirlisi_test |     operation_model, request_dict, request_context)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/client.py", line 667, in _make_request
hayirlisi_test |     return self._endpoint.make_request(operation_model, request_dict)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/endpoint.py", line 102, in make_request
hayirlisi_test |     return self._send_request(request_dict, operation_model)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/endpoint.py", line 137, in _send_request
hayirlisi_test |     success_response, exception):
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/endpoint.py", line 231, in _needs_retry
hayirlisi_test |     caught_exception=caught_exception, request_dict=request_dict)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/hooks.py", line 356, in emit
hayirlisi_test |     return self._emitter.emit(aliased_event_name, **kwargs)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/hooks.py", line 228, in emit
hayirlisi_test |     return self._emit(event_name, kwargs)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/hooks.py", line 211, in _emit
hayirlisi_test |     response = handler(**kwargs)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/retryhandler.py", line 183, in __call__
hayirlisi_test |     if self._checker(attempts, response, caught_exception):
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/retryhandler.py", line 251, in __call__
hayirlisi_test |     caught_exception)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/retryhandler.py", line 277, in _should_retry
hayirlisi_test |     return self._checker(attempt_number, response, caught_exception)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/retryhandler.py", line 317, in __call__
hayirlisi_test |     caught_exception)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/retryhandler.py", line 223, in __call__
hayirlisi_test |     attempt_number, caught_exception)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/retryhandler.py", line 359, in _check_caught_exception
hayirlisi_test |     raise caught_exception
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/endpoint.py", line 200, in _do_get_response
hayirlisi_test |     http_response = self._send(request)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/endpoint.py", line 244, in _send
hayirlisi_test |     return self.http_session.send(request)
hayirlisi_test |   File "/usr/local/lib/python3.6/site-packages/botocore/httpsession.py", line 278, in send
hayirlisi_test |     raise EndpointConnectionError(endpoint_url=request.url, error=e)
hayirlisi_test | botocore.exceptions.EndpointConnectionError: Could not connect to the endpoint URL: "http://127.0.0.1:8000/"

我的 DynamoDB 变量声明如下所示

dynamodb = boto3.client('dynamodb', aws_access_key_id="anything",aws_secret_access_key="anything",region_name="local",endpoint_url="http://127.0.0.1:8000/%22)

我也尝试使用“-sharedDB”参数运行 DynamoDB docker。但是，我无法弄清楚我做错了什么。

标签： pythonamazon-web-servicesdockeramazon-dynamodbboto3

Answer 1

如果您在两个 docker 容器中运行它，则需要执行一些操作。首先，是容器localhost本地的。也就是说，您调用的是容器的本地主机，而不是您机器的本地主机。

您需要使其他容器彼此可见。这可以通过networks. 因此，您需要像这样进行设置：

docker network create test_network

然后你可以像这样在那个网络上运行你的容器：

docker run -p <host>:<container> --network=test_network -n <container_name> <image>

现在您容器中的 url 将是name您设置的容器的 url：

myendpoint = 'http://<container_name>:<container_port>'

要查看该网络上的容器，您可以运行

docker network inspect test_network

并查看该containers部分。您将看到名称、IP 地址等。您要为容器命名的原因是因为名称是随机的，除非您指定它，而且与尝试通过容器的 ip 地址查找容器相比，这对您没有多大帮助