I have two lambda functions. One connects to an ECS instance using a VPC. The second should also connect to that same ECS instance and an API (api.twitter.com). The first function works perfectly, i've been able to write and read from files within the instance. However, the second can connect to the API without the VPC, but immediately the VPC is added it gives me a ``` "errorMessage": "Failed to send request: HTTPSConnectionPool(host='api.twitter.com', port=443) ``` **About my VPC** - I have 2 public subnets and 2 private subnets - in two separate availability zones - I have an Internet gateway attached to my VPC - I have 2 route tables(public and private - My internet gateway is routed to my public route table - I also have an NAT gateway connected to my public subnet - That NAT gateway is routed to my private route table I have gone back and forth with all the connections highlighted above trying to solve this issue. I need my function to access ECS and also connect to the internet API. Please help me.

Failed to send request - Lambda can't connect to External API

I have two lambda functions. One connects to an ECS instance using a VPC. The second should also connect to that same ECS instance and an API (api.twitter.com). The first function works perfectly, i've been able to write and read from files within the instance. However, the second can connect to the API without the VPC, but immediately the VPC is added it gives me a

"errorMessage": "Failed to send request: HTTPSConnectionPool(host='api.twitter.com', port=443)

About my VPC

I have 2 public subnets and 2 private subnets - in two separate availability zones
I have an Internet gateway attached to my VPC
I have 2 route tables(public and private
My internet gateway is routed to my public route table
I also have an NAT gateway connected to my public subnet
That NAT gateway is routed to my private route table

I have gone back and forth with all the connections highlighted above trying to solve this issue. I need my function to access ECS and also connect to the internet API. Please help me.

rePost-User-9914719
일 년 전
I am facing the exact same issue, the lambda with vpc connected cannot request to external network (verify google recaptcha). I basically have the same VPC configuration with you. Did you find any solutions?

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네트워킹 및 콘텐츠 전송 서버리스 컴퓨팅 마이크로서비스

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아마존 VPC AWS Lambda 네트워킹 및 콘텐츠 전송 마이크로서비스 가용성

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rePost-User-1663789

질문됨 2년 전2137회 조회

2개 답변

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이 답변이 도움이 되었나요?커뮤니티가 여러분의 지식을 활용할 수 있도록 정답을 찬성하세요.

What does the Security Group for the Lambda function look like?

전문가

kentrad

답변함 2년 전

rePost-User-1663789
2년 전
VPC security group outbound rule is at default set to all traffic, and destination anywhere 0.0.0.0/0 Inbound rule is also at default with all traffic source from security group id
kentrad 전문가
2년 전
Can you use the VPC Reachability Analyzer to see where the blockage is between the Lambda ENI and Internet Gateway? https://docs.aws.amazon.com/vpc/latest/reachability/what-is-reachability-analyzer.html

Does this help? https://aws.amazon.com/premiumsupport/knowledge-center/internet-access-lambda-function/

Rajesh S

답변함 2년 전

rePost-User-1663789
2년 전
Yes, that has been my guide i honestly don't know where i'm missing it. But i guess i have to do more troubleshooting

Failed to send request - Lambda can't connect to External API

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