Managed ENI Stack

The Managed ENI Stack deploys a Lambda function to define a custom resource in Cloud Formation template called the Managed ENI. The Lambda function uses the AWS Python SDK (boto3) to define CloudFormation lifecycle hook to manage the Elastic Network Interface.

Upon launch of the stack, the AWS Lambda function creates an Elastic Network Interface based on the node count, subnets, and security group. The Network Interfaces created are tagged with a stack identifiers.

Upon deletion of the stack, the AMS Lambda function deletes the Elastic Network Interfaces that were tagged with the stack identifiers mentioned above.

The Managed ENI Stack defines a new IAM role with the following policies:

• ec2:CreateNetworkInterface

• ec2:DeleteNetworkInterface

• ec2:DescribeNetworkInterfaces

• ec2:CreateTags

• logs:CreateLogGroup

• logs:CreateLogStream

• logs:PutLogEvents