我在VPC中有一个lambda，因为它需要访问数据库。现在，此lambda还必须能够使用Firehose Kinesis视频流（https://aws.amazon.com/kinesis/video-streams/）。我的lambda是用Python构建的，这是创建kinesis视频客户端的代码：

client = boto3.client('kinesisvideo')
def create_stream(stream_name):
    response = client.create_stream(
        DeviceName='BE',StreamName=stream_name,MediaType='video/h264',DataRetentionInHours=1,Tags={
            'string': 'Livestream'
        }
    )
    stream_ARN = response['StreamARN']
    print('Printing ARN: ',stream_ARN)
    return stream_ARN

现在，当我调用create_stream（'TEST'）时，我的lambda会在90秒后超时：

[DEBUG] 2019-11-05T15:02:47.66Z 2e094ebe-8a92-4a10-ab6c-433cf223cb5b retry needed,retryable exception caught: Connect timeout on endpoint URL: "https://kinesisvideo.eu-west-1.amazonaws.com/createStream"
Traceback (most recent call last):
File "/var/runtime/urllib3/connection.py",line 160,in _new_conn
(self._dns_host,self.port),self.timeout,**extra_kw)
File "/var/runtime/urllib3/util/connection.py",line 80,in create_connection
raise err
File "/var/runtime/urllib3/util/connection.py",line 70,in create_connection
sock.connect(sa)
socket.timeout: timed out

During handling of the above exception,another exception occurred:

Traceback (most recent call last):
File "/var/runtime/botocore/httpsession.py",line 262,in send
chunked=self._chunked(request.headers),File "/var/runtime/urllib3/connectionpool.py",line 641,in urlopen
_stacktrace=sys.exc_info()[2])
File "/var/runtime/urllib3/util/retry.py",line 344,in increment
raise six.reraise(type(error),error,_stacktrace)
File "/var/runtime/urllib3/packages/six.py",line 686,in reraise
raise value
File "/var/runtime/urllib3/connectionpool.py",line 603,in urlopen
chunked=chunked)
File "/var/runtime/urllib3/connectionpool.py",in _make_request
self._validate_conn(conn)
File "/var/runtime/urllib3/connectionpool.py",line 843,in _validate_conn
conn.connect()
File "/var/runtime/urllib3/connection.py",line 316,in connect
conn = self._new_conn()
File "/var/runtime/urllib3/connection.py",line 165,in _new_conn
(self.host,self.timeout))
urllib3.exceptions.ConnectTimeoutError: (<botocore.awsrequest.AWSHTTPSConnection object at 0x7fcf62a7e128>,'Connection to kinesisvideo.eu-west-1.amazonaws.com timed out. (connect timeout=60)')

据我了解，我的Lambda无法连接到https://kinesisvideo.eu-west-1.amazonaws.com/createStream，因为它在VPC中。为了测试这一点，我在VPC外部创建了一个新的临时lambda，它工作得很好，它可以毫无问题地连接到Kinesis Video Stream。

要解决此问题，我了解我必须创建一个端点，以便VPC中的lambda可以访问AWS服务（例如Kinesis Video Streaming）。我转到VPC端点控制台并创建了一个新端点。我选择了“ com.amazonaws.eu-west-1.kinesis-streams”服务，并确保使用与lambda相同的VPC，子网和安全组。创建端点后，我尝试再次调用create_stream。不幸的是，尝试连接时，我得到了相同的结果，超时。

所以我的问题是：从VPC到AWS服务完全可行吗？如果可以，怎么办？

更新

作为对答案的回应，我现在尝试了以下操作，但仍然出现相同的错误：

我在VPC中的Lambda具有一个具有“所有出站”权限的SG。然后，我创建了一个从VPC SG入站的新SG，然后将其分配给端点。