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AWS failing to remove the ENI when removing Lambda attached to VPC

0

AWS is failing to remove the ENI after 20 minutes leaving the stack in a failed state. The Lambda which is connected to a VPC and Subnet is removed but it's Security Group and Subnet lingers.

DELETE_FAILED | AWS::EC2::SecurityGroup | Lambda/SecurityGroup (LambdaSecurityGroup123) resource sg-123 has a dependent object (Service: Ec2, Status Code: 400, Request ID: 123)

Whilst I understand it's failing to delete the Security Group because the ENI isn't being deleted by AWS. I'm failing to understand why AWS isn't removing the ENI after 20 minutes?

  • Adeleke Adebowale .J. EXPERT
    2 years ago

    Check the CloudWatch logs for the Lambda function to see if there were any errors or issues during execution that might have prevented it

Topics
ServerlessComputeAWS Cloud Development Kit (CDK)
Tags
Amazon EC2AWS Cloud Development Kit (CDK)AWS Lambda
Language
English
asked 2 years ago965 views
2 Answers
2

I have the same issue when redeploying Lambda with Terraform.. Give it a little more time and they should go.

EXPERT
answered 2 years ago
AWS
EXPERT
reviewed 2 years ago
  • John
    2 years ago

    I left it for an hour and it failed to delete. Also tried re running cdk destroy but AWS still fails to delete the ENI and stack.

1
Accepted Answer

By creating the security groups seperatly outside of the Lambda CDK stack - this allowed the ENI to be destroyed.

answered 2 years ago
EXPERT
reviewed 2 years ago

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