AWS lambda无法连接到EC2 Mysql服务器

我一直试图连接EC2 mysql serverAWS Lambda这是没有发生。我发现Lambda function是完美的工作，当我只是评论数据库获取代码。我正在使用Django framework并使用zappa将代码部署到Lambda并在AWS API GateWay中添加设置。AWS lambda无法连接到EC2 Mysql服务器

事情我做：

创建了一个用户在Mysql与AWS Lambda主机地址
虽然与zappa新增Subnet Id和Security Group Id在设置文件部署。
未创建新的VPC，因为EC2实例已创建默认VPC。所以我只是用它。
我看到它Lambda function工作真的很好，当我只是评论数据库代码（EC2的Mysql数据库，试图从aws lambda获取结果）。

代码：

class GetData(APIView): 
def post(self, request, format=None): 
    if request.method == "POST": 
     item_id = request.data.get('item_id') 
     if item_id not in [None, '', ' ']: 

       item = Item.objects.get(item_id=item_id) # Comment 1 
       item_name = item.item_name # Comment 2 

       return Response({"return": "OK OK OK OK"}) 
     else: 
      return Response({"return": "ITEM NOT OK "}) 
    else: 
     return Response({"return": "NOT OK "})

在上面的代码如果我刚注释掉评论1和评论2行我收到status code 200和返回下面响应

{"return": "OK OK OK OK"}

它告诉lambda函数是工作正常，但如果我不评论这两条线我得到以下错误

Sun Aug 06 13:48:33 UTC 2017 : Execution failed due to configuration error: Malformed Lambda proxy response 

Sun Aug 06 13:48:33 UTC 2017 : Method completed with status: 502

我在API gateway中发现了上述错误。我不明白我出错的地方。帮我调试这个问题

编辑：

EC2安全组的详细信息：

入站：

HTTP (80) (0.0.0.0/0 and ::/0)，HTTPS(443) (0.0.0.0/0 and ::/0)，MYSQL/Aurora(3306)(0.0.0.0/0 and ::/0)，SSH(22)(0.0.0.0/0)

出站：

All trafic

EDIT2：

云watch日志：

START RequestId: 29f0907a-7ab5-11e7-8f0c-6586a26797eb Version: $LATEST 
[DEBUG] 2017-08-06T14:40:17.154Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing BmpImagePlugin 
[DEBUG] 2017-08-06T14:40:17.170Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing BufrStubImagePlugin 
[DEBUG] 2017-08-06T14:40:17.170Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing CurImagePlugin 
[DEBUG] 2017-08-06T14:40:17.171Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing DcxImagePlugin 
[DEBUG] 2017-08-06T14:40:17.184Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing DdsImagePlugin 
[DEBUG] 2017-08-06T14:40:17.185Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing EpsImagePlugin 
[DEBUG] 2017-08-06T14:40:17.187Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing FitsStubImagePlugin 
[DEBUG] 2017-08-06T14:40:17.188Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing FliImagePlugin 
[DEBUG] 2017-08-06T14:40:17.189Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing FpxImagePlugin 
[DEBUG] 2017-08-06T14:40:17.206Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing FtexImagePlugin 
[DEBUG] 2017-08-06T14:40:17.206Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing GbrImagePlugin 
[DEBUG] 2017-08-06T14:40:17.207Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing GifImagePlugin 
[DEBUG] 2017-08-06T14:40:17.211Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing GribStubImagePlugin 
[DEBUG] 2017-08-06T14:40:17.212Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing Hdf5StubImagePlugin 
[DEBUG] 2017-08-06T14:40:17.212Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing IcnsImagePlugin 
[DEBUG] 2017-08-06T14:40:17.227Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing IcoImagePlugin 
[DEBUG] 2017-08-06T14:40:17.229Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing ImImagePlugin 
[DEBUG] 2017-08-06T14:40:17.230Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing ImtImagePlugin 
[DEBUG] 2017-08-06T14:40:17.231Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing IptcImagePlugin 
[DEBUG] 2017-08-06T14:40:17.244Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing JpegImagePlugin 
[DEBUG] 2017-08-06T14:40:17.272Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing Jpeg2KImagePlugin 
[DEBUG] 2017-08-06T14:40:17.272Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing McIdasImagePlugin 
[DEBUG] 2017-08-06T14:40:17.272Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing MicImagePlugin 
[DEBUG] 2017-08-06T14:40:17.273Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing MpegImagePlugin 
[DEBUG] 2017-08-06T14:40:17.273Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing MpoImagePlugin 
[DEBUG] 2017-08-06T14:40:17.275Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing MspImagePlugin 
[DEBUG] 2017-08-06T14:40:17.276Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing PalmImagePlugin 
[DEBUG] 2017-08-06T14:40:17.286Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing PcdImagePlugin 
[DEBUG] 2017-08-06T14:40:17.286Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing PcxImagePlugin 
[DEBUG] 2017-08-06T14:40:17.286Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing PdfImagePlugin 
[DEBUG] 2017-08-06T14:40:17.288Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing PixarImagePlugin 
[DEBUG] 2017-08-06T14:40:17.288Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing PngImagePlugin 
[DEBUG] 2017-08-06T14:40:17.288Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing PpmImagePlugin 
[DEBUG] 2017-08-06T14:40:17.289Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing PsdImagePlugin 
[DEBUG] 2017-08-06T14:40:17.290Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing SgiImagePlugin 
[DEBUG] 2017-08-06T14:40:17.291Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing SpiderImagePlugin 
[DEBUG] 2017-08-06T14:40:17.293Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing SunImagePlugin 
[DEBUG] 2017-08-06T14:40:17.293Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing TgaImagePlugin 
[DEBUG] 2017-08-06T14:40:17.294Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing TiffImagePlugin 
[DEBUG] 2017-08-06T14:40:17.294Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing WebPImagePlugin 
[DEBUG] 2017-08-06T14:40:17.295Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing WmfImagePlugin 
[DEBUG] 2017-08-06T14:40:17.296Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing XbmImagePlugin 
[DEBUG] 2017-08-06T14:40:17.305Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing XpmImagePlugin 
[DEBUG] 2017-08-06T14:40:17.306Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Importing XVThumbImagePlugin 
[DEBUG] 2017-08-06T14:40:17.469Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Zappa Event: {u'body': u'{\n\t\n\t"item_id" : "345488692474"\n}', u'resource': u'/{proxy+}', u'requestContext': {u'resourceId': u'z2csqk', u'apiId': u'crmb4ybwrk', u'resourcePath': u'/{proxy+}', u'httpMethod': u'POST', u'requestId': u'test-invoke-request', u'path': u'/{proxy+}', u'accountId': u'xxxxxxxxx', u'identity': {u'apiKey': u'test-invoke-api-key', u'userArn': u'arn:aws:iam::6315xxxxxxx:root', u'cognitoAuthenticationType': None, u'accessKey': u'ASIAxxxxxxxLR4UYLYXEQ', u'caller': u'xxxxxxxxxxxxx', u'userAgent': u'Apache-HttpClient/4.5.x (Java/1.8.0_112)', u'user': u'6xxxxxxxxxxxxx', u'cognitoIdentityPoolId': None, u'cognitoIdentityId': None, u'cognitoAuthenticationProvider': None, u'sourceIp': u'test-invoke-source-ip', u'accountId': u'xxxxxxxxx9'}, u'stage': u'test-invoke-stage'}, u'queryStringParameters': None, u'httpMethod': u'POST', u'pathParameters': None, u'headers': {u'Content-Type': u'application/json'}, u'stageVariables': None, u'path': u'/', u'isBase64Encoded': False} 
END RequestId: 29f0907a-7ab5-11e7-8f0c-6586a26797eb 
REPORT RequestId: 29f0907a-7ab5-11e7-8f0c-6586a26797eb Duration: 20003.70 ms Billed Duration: 20000 ms Memory Size: 1024 MB Max Memory Used: 63 MB 
2017-08-06T14:40:37.000Z 29f0907a-7ab5-11e7-8f0c-6586a26797eb Task timed out after 20.00 seconds

来源

2017-08-06 Naroju

请提供分配给EC2实例的安全组的详细信息。另请提供适用于Lambda函数的CloudWatch日志，其中应包含实际的错误消息。 –

增加了Securty组的EC2细节。让我添加云手表的详细信息.. – Naroju

EC2安全组规则的源值是什么？请提供**所有**的详细信息。 –

添加一个try /除了你的处理程序，并记录任何错误，这可能会帮助你解决这个问题。使用Lambda代理集成时，任何未处理的异常都将导致错误网关（502）响应。

来源

2017-08-07 00:59:51

AWS lambda无法连接到EC2 Mysql服务器

回答

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