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AWS Lambda Provisioned Concurrency Config

This page shows how to write Terraform and CloudFormation for Lambda Provisioned Concurrency Config and write them securely.

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aws_lambda_provisioned_concurrency_config (Terraform)

The Provisioned Concurrency Config in Lambda can be configured in Terraform with the resource name aws_lambda_provisioned_concurrency_config. The following sections describe 3 examples of how to use the resource and its parameters.

Example Usage from GitHub

main.tf#L7
resource "aws_lambda_provisioned_concurrency_config" "this" {
  function_name                     = var.function_name
  provisioned_concurrent_executions = var.provisioned_concurrent_executions
  qualifier                         = var.qualifier

  dynamic "timeouts" {
lambda_provisioned_concurrency_config.tf#L4
resource "aws_lambda_provisioned_concurrency_config" "lambda_provisioned_concurrency_config" {
  count = var.enable_lambda_provisioned_concurrency_config ? 1 : 0

  function_name                     = var.lambda_provisioned_concurrency_config_function_name != "" && !var.enable_lambda_function && !var.enable_lambda_alias ? var.lambda_provisioned_concurrency_config_function_name : (var.enable_lambda_function && !var.enable_lambda_alias ? element(concat(aws_lambda_function.lambda_function.*.function_name, [""]), 0) : element(concat(aws_lambda_alias.lambda_alias.*.function_name, [""]), 0))
  qualifier                         = var.lambda_provisioned_concurrency_config_qualifier != "" && !var.enable_lambda_function && !var.enable_lambda_alias ? var.lambda_provisioned_concurrency_config_qualifier : (var.enable_lambda_function && !var.enable_lambda_alias ? element(concat(aws_lambda_function.lambda_function.*.version, [""]), 0) : element(concat(aws_lambda_alias.lambda_alias.*.name, [""]), 0))
  provisioned_concurrent_executions = var.lambda_provisioned_concurrency_config_provisioned_concurrent_executions
lambda_provisioned_concurrency_config.tf#L4
resource "aws_lambda_provisioned_concurrency_config" "lambda_provisioned_concurrency_config" {
  count = var.enable_lambda_provisioned_concurrency_config ? 1 : 0

  function_name                     = var.lambda_provisioned_concurrency_config_function_name != "" && ! var.enable_lambda_function && ! var.enable_lambda_alias ? var.lambda_provisioned_concurrency_config_function_name : (var.enable_lambda_function && ! var.enable_lambda_alias ? element(concat(aws_lambda_function.lambda_function.*.function_name, [""]), 0) : element(concat(aws_lambda_alias.lambda_alias.*.function_name, [""]), 0))
  qualifier                         = var.lambda_provisioned_concurrency_config_qualifier != "" && ! var.enable_lambda_function && ! var.enable_lambda_alias ? var.lambda_provisioned_concurrency_config_qualifier : (var.enable_lambda_function && ! var.enable_lambda_alias ? element(concat(aws_lambda_function.lambda_function.*.version, [""]), 0) : element(concat(aws_lambda_alias.lambda_alias.*.name, [""]), 0))
  provisioned_concurrent_executions = var.lambda_provisioned_concurrency_config_provisioned_concurrent_executions

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Parameters

>> from Terraform Registry

Explanation in Terraform Registry

Manages a Lambda Provisioned Concurrency Configuration.

>> from Terraform Registry

Tips: Best Practices for The Other AWS Lambda Resources

In addition to the aws_lambda_permission, AWS Lambda has the other resources that should be configured for security reasons. Please check some examples of those resources and precautions.

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aws_lambda_permission

Ensure to limit your Lambda function permission as much as possible

It is better for limiting the Lambda function permission to set `source_arn` if the ARN can be specified to grant permissions.

Review your AWS Lambda settings

In addition to the above, there are other security points you should be aware of making sure that your .tf files are protected in Shisho Cloud.

AWS::Lambda::Alias ProvisionedConcurrencyConfiguration (CloudFormation)

The Alias ProvisionedConcurrencyConfiguration in Lambda can be configured in CloudFormation with the resource name AWS::Lambda::Alias ProvisionedConcurrencyConfiguration. The following sections describe how to use the resource and its parameters.

Example Usage from GitHub

An example could not be found in GitHub.

Parameters

ProvisionedConcurrentExecutions The amount of provisioned concurrency to allocate for the alias.
Required: Yes
Type: Integer
Update requires: No interruption

>> from AWS CloudFormation Documentation

Explanation in CloudFormation Registry

A provisioned concurrency configuration for a function's alias.

>> from AWS CloudFormation Documentation

The Other Related AWS Lambda Resources

Frequently asked questions

What is AWS Lambda Provisioned Concurrency Config?

AWS Lambda Provisioned Concurrency Config is a resource for Lambda of Amazon Web Service. Settings can be wrote in Terraform and CloudFormation.

Where can I find the example code for the AWS Lambda Provisioned Concurrency Config?

For Terraform, the niveklabs/aws, asrkata/SebastianUA-terraform and SebastianUA/terraform-aws-lambda source code examples are useful. See the Terraform Example section for further details.

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