Loading multiple parameters from the AWS parameter store and using them in terraform

Example.md

Let's say you have the following parameters defined in the AWS parameter store:

/production/worker/SOME_PARAM_1
/prodcution/worker/SOME_PARAM_2

Instead of using multiple data blocks you can use aws_ssm_parameters_by_path to load them all at once. \ But using them is another thing. To be able to use them easily, you can remap this data into your own object.

It looks something like this:

data "aws_ssm_parameters_by_path" "my_params" {
  path      = "/production/worker/"
  recursive = true
}

locals {
  production-worker-params = {
  for k, v in data.aws_ssm_parameters_by_path.my_params.names :
  trimprefix(v, "/production/worker/") => data.aws_ssm_parameters_by_path.my_params.values[k]
  }
}

You can now use this in your resource like this:

resource "aws_elastic_beanstalk_environment", "something" {
    setting {
        name = "SOME_PARAM_1" # The env variable to set
        namespace = "aws:elasticbeanstalk:application:environment"
        value = local.production-worker-params["SOME_PARAM_1"] # this comes from our freshly brewed map
    }
}