00.output

terraform apply -auto-approve
module.plain.null_resource.echo: Refreshing state... [id=5834646776835244708]
module.plain.null_resource.echo: Destroying... [id=5834646776835244708]
module.echo2.null_resource.echo: Creating...
module.echo1.null_resource.echo: Creating...
module.plain.null_resource.echo: Destruction complete after 0s
module.echo1.null_resource.echo: Provisioning with 'local-exec'...
module.echo2.null_resource.echo: Provisioning with 'local-exec'...
module.echo1.null_resource.echo (local-exec): Executing: ["/bin/sh" "-c" "echo x=10 y=20 z=30\n"]
module.echo2.null_resource.echo (local-exec): Executing: ["/bin/sh" "-c" "echo x=100 y=200 z=300\n"]
module.echo2.null_resource.echo (local-exec): x=100 y=200 z=300
module.echo1.null_resource.echo (local-exec): x=10 y=20 z=30
module.echo2.null_resource.echo: Creation complete after 0s [id=1269680042276636852]
module.echo1.null_resource.echo: Creation complete after 0s [id=8965362161603827784]

Apply complete! Resources: 2 added, 0 changed, 1 destroyed.
terraform show
# module.echo2.null_resource.echo:
resource "null_resource" "echo" {
    id       = "1269680042276636852"
    triggers = {
        "x" = "100"
        "y" = "200"
        "z" = "300"
    }
}



# module.echo1.null_resource.echo:
resource "null_resource" "echo" {
    id       = "8965362161603827784"
    triggers = {
        "x" = "10"
        "y" = "20"
        "z" = "30"
    }
}

main.tf

module "echo1" {
  source = "./modules/xyz"

  primary_configuration = {
    x = 10
    y = 20
    z = 30
  }
}

module "echo2" {
  source = "./modules/xyz"

  primary_configuration = {
    x = 100
    y = 200
    z = 300
  }
}

Makefile

00:
	terraform apply -auto-approve
	terraform show
01:
	terraform output

fmt:
	terraform fmt
init:
	terraform init
.PHONY: init fmt

https://gist.github.com/podhmo/1b85a76851f9b6e94541735f31479e0c