How to add environment variables using module "lambda_function" - Terraform

Question

I'm using aws version 3.50.0, but with for_each to read from _variables.tf. My main.tf is given below. When I comment out environment section as shown below, everything works. But how to add environment variables? When I uncomment and run the plan it throws this error:

│ Error: Unsupported block type
│ 
│   on main.tf line 22, in module "lambda_function":
│   22:   environment {
│ 
│ Blocks of type "environment" are not expected here.
│
│ make: *** [Makefile:44: plan] Error 1
______________________________________________________


locals {
  functions = {
    for function in local.workspace:
    function.name => function
  }
}

module "lambda_function" {

  source = "terraform-aws-modules/lambda/aws"

  for_each = local.functions

  function_name                  = "${element(split("-", terraform.workspace), 4)}-${each.value.name}"
  description                    = lookup(each.value, "description", "Not applicable")
  handler                        = "${each.value.name}.lambda_handler"
  memory_size                    = 128
  reserved_concurrent_executions = lookup(each.value, "reserved_concurrent_executions", 5)
  source_path = "${each.value.name}.py"
  runtime                        = "python3.8"
  
  # environment {
  #     variables = {
  #       LOTJM_ENV = "${element(split("-", terraform.workspace), 4)}"
  #     }
  # }
  
  tags = {
    Name = "${element(split("-", terraform.workspace), 4)}-${each.value.name}"
  }
}

By reading the docs and using a environment_variables variable / parameter instead, not a block and not an arbitrarily named one. — luk2302
– luk2302, Commented Jul 19, 2021 at 10:56
If you look at the documentation of the module it says to use: environment_variables. That should fix the issue for you. I also have a terraform module for lambda that you can use if you need help: github.com/tomarv2/terraform-aws-lambda — tomarv2
– tomarv2, Commented Jul 19, 2021 at 16:25

Martin Atkins · Accepted Answer · 2021-07-19 15:59:07Z

3

According to the documentation for this module, there's an optional input variable called environment_variables which is documented as follows:

environment_variables map(string)

Description: A map that defines environment variables for the Lambda Function.

Default: {}

This suggests that the intended way to set environment variables for this module would be something like the following:

module "lambda_function" {
  source   = "terraform-aws-modules/lambda/aws"
  for_each = local.functions

  # ...

  environment_variables = {
    LOTJM_ENV = element(split("-", terraform.workspace), 4)
  }
}

This is a similar approach as for setting the tags variable, which is also declared as expecting a map(string) value.

answered Jul 19, 2021 at 15:59

Martin Atkins

76.4k9 gold badges152 silver badges168 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to add environment variables using module "lambda_function" - Terraform

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related