recreate runner instance when user_data changes

Author: rajat-tomar

main.tf

@@ -3,7 +3,7 @@ locals {
     Name      = "gitlab-docker-runner"
     ManagedBy = "Terraform"
   }
-  runner_user_data = templatefile("templates/runner.tftpl", {
+  runner_user_data = templatefile("${path.module}/templates/runner.tftpl", {
     gitlab_url                = var.gitlab_url
     runner_registration_token = var.runner_registration_token
     docker_image              = var.docker_image
@@ -35,8 +35,7 @@ resource "aws_instance" "this" {
   vpc_security_group_ids      = var.vpc_security_group_ids
   subnet_id                   = var.subnet_id
   user_data                   = local.runner_user_data
-  user_data_replace_on_change = var.user_data_replace_on_change
-
+  user_data_replace_on_change = true
   tags = merge(
     local.tags,
     var.additional_tags,

variables.tf

@@ -28,12 +28,6 @@ variable "subnet_id" {
   default     = ""
 }
 
-variable "user_data_replace_on_change" {
-  description = "Recreate the instance when the user data changes"
-  type        = bool
-  default     = true
-}
-
 variable "additional_tags" {
   description = "Additional tags to apply to the resources"
   type        = map(string)