boto3 tries to use non-existing URL for support service

Describe the bug If the AWS_REGION is set to us-west-2 and an make a support client call, you will get an error: EndpointConnectionError: Could not connect to the endpoint URL: “https://support.us-west-2.amazonaws.com/”

Steps to reproduce set AWS_REGION to us-west-2 and try to use support API, you can reproduce this with aws tool as well

Expected behavior Call should work. There’s a workaround is to use us-east-1 as a region, since support isn’t specific to given region, but users shouldn’t need to override the region.

Debug logs

[ERROR] EndpointConnectionError: Could not connect to the endpoint URL: "https://support.us-west-2.amazonaws.com/"
Traceback (most recent call last):
  File "/var/task/index.py", line 68, in lambda_handler
    case_id = open_support_ticket(account_id, company_name, cc_emails)
  File "/var/task/index.py", line 35, in open_support_ticket
    issueType="customer-service",
  File "/var/runtime/botocore/client.py", line 316, in _api_call
    return self._make_api_call(operation_name, kwargs)
  File "/var/runtime/botocore/client.py", line 613, in _make_api_call
    operation_model, request_dict, request_context)
  File "/var/runtime/botocore/client.py", line 632, in _make_request
    return self._endpoint.make_request(operation_model, request_dict)
  File "/var/runtime/botocore/endpoint.py", line 102, in make_request
    return self._send_request(request_dict, operation_model)
  File "/var/runtime/botocore/endpoint.py", line 137, in _send_request
    success_response, exception):
  File "/var/runtime/botocore/endpoint.py", line 231, in _needs_retry
    caught_exception=caught_exception, request_dict=request_dict)
  File "/var/runtime/botocore/hooks.py", line 356, in emit
    return self._emitter.emit(aliased_event_name, **kwargs)
  File "/var/runtime/botocore/hooks.py", line 228, in emit
    return self._emit(event_name, kwargs)
  File "/var/runtime/botocore/hooks.py", line 211, in _emit
    response = handler(**kwargs)
  File "/var/runtime/botocore/retryhandler.py", line 183, in __call__
    if self._checker(attempts, response, caught_exception):
  File "/var/runtime/botocore/retryhandler.py", line 251, in __call__
    caught_exception)
  File "/var/runtime/botocore/retryhandler.py", line 277, in _should_retry
    return self._checker(attempt_number, response, caught_exception)
  File "/var/runtime/botocore/retryhandler.py", line 317, in __call__
    caught_exception)
  File "/var/runtime/botocore/retryhandler.py", line 223, in __call__
    attempt_number, caught_exception)
  File "/var/runtime/botocore/retryhandler.py", line 359, in _check_caught_exception
    raise caught_exception
  File "/var/runtime/botocore/endpoint.py", line 200, in _do_get_response
    http_response = self._send(request)
  File "/var/runtime/botocore/endpoint.py", line 244, in _send
    return self.http_session.send(request)
  File "/var/runtime/botocore/httpsession.py", line 283, in send
    raise EndpointConnectionError(endpoint_url=request.url, error=e)

[swetashre]

@takeda - I would create ticket to service team about the issue to see what they are thinking of adding isRegionalized parameter to the endpoint . I will post here when i get any update.

[takeda]

@swetashre I should have provide more context. This error appeared when I deployed a lambda code into us-west-2. The code crashed, with the error and the workaround was to force a different region i.e. change:

support = boto3.client("support")

into this:

support = boto3.Session(region_name="us-east-1").client("support")

I think for this service boto should just ignore region defined in AWS_DEFAULT_REGION and always send requests to https://support.us-east-1.amazonaws.com since it is a global service. I don’t think it is a good practice to make workarounds like this in code.