Ensure Lambda function logging config is enabled¶

Ensure that AWS Lambda function logging config is enabled for your Amazon Lambda functions for enhanced monitoring.

How to fix¶

Attribute logging_config[0].log_format of aws_lambda_function must be non-empty.

Implementation options¶

Choose the option that matches how you manage Terraform. All options satisfy this control.

Option 1: Open source module (`terraform-aws-modules`)¶

If you use terraform-aws-modules/lambda/aws, configure the required module inputs to satisfy this control. You can later migrate to the compliance.tf module with minimal changes because it is compatible by design.

module "lambda" {
  source  = "terraform-aws-modules/lambda/aws"
  version = ">=8.0.0"

  create_package         = false
  function_name          = "abc123"
  handler                = "index.lambda_handler"
  local_existing_package = "lambda_function.zip"
  runtime                = "python3.12"
}

Option 2: Terraform AWS provider resources¶

If you manage resources directly, configure the relevant Terraform AWS provider resources to meet this control. See docs for the resources involved: aws_lambda_function.

resource "aws_lambda_function" "this" {
  filename         = "lambda_function.zip"
  function_name    = "pofix-example-function"
  handler          = "index.handler"
  role             = "arn:aws:iam::123456789012:role/example-role"
  runtime          = "python3.12"
  source_code_hash = "mock-source-code-hash"
}

Which option should I choose?

Compliance.tf module (recommended): controls enforced by default and mapped to frameworks.
Open source module (terraform-aws-modules): compatible by design with compliance.tf. Same variable names for an easy, low-change migration path when you are ready.
Terraform AWS provider resources: manage Terraform resources directly.

Tool mappings¶

Use these identifiers to cross-reference this control across tools, reports, and evidence.

Compliance.tf (CTF) Control: lambda_function_logging_config_enabled
Powerpipe Control: aws_compliance.control.lambda_function_logging_config_enabled