refactor: extract cluster name to optional variable

Author: rohit-ng

.header.md

@@ -2,13 +2,13 @@
 
 ![Kong](https://github.com/user-attachments/assets/3dda9db7-cf8e-4cd2-a507-4e50f9252ffe)
 
-# Prerequisites for Setting Up AWS SSM Parameters
+# Assumptions
 
-To configure and manage your AWS resources and GitHub Actions using Secure String parameters in AWS Systems Manager Parameter Store, follow the steps below to add the required parameters:
+This setup assumes that the `ECS cluster` that has `Auto Scaling Group (ASG)` exist with the name `default`. If you are using different name, you can provide those in the variables section of your Terraform configuration.
 
-# Important Note
+# Prerequisites for Setting Up AWS SSM Parameters
 
-This setup assumes that the ECS cluster and Auto Scaling Group (ASG) exist with the name default. If you are using different names, you can provide those in the variables section of your Terraform configuration.
+To configure and manage your AWS resources and GitHub Actions using Secure String parameters in AWS Systems Manager Parameter Store, follow the steps below to add the required parameters:
 
 ## AWS CLI Installation
 

examples/complete/main.tf

@@ -20,6 +20,7 @@ module "kong" {
   backup_window                         = var.backup_window
   maintenance_window                    = var.maintenance_window
 
+  cluster_name                   = var.cluster_name
   ssl_policy                     = var.ssl_policy
   container_image                = var.container_image
   log_configuration_for_kong     = var.log_configuration_for_kong

examples/complete/variables.tf

@@ -83,6 +83,11 @@ variable "maintenance_window" {
   type        = string
 }
 
+variable "cluster_name" {
+  description = "Name of the cluster"
+  type        = string
+}
+
 variable "ssl_policy" {
   type        = string
   description = "(Optional) Name of the SSL Policy for the listener."

main.tf

@@ -197,7 +197,7 @@ resource "aws_iam_role_policy_attachment" "ecs_exec" {
 ################################################################################
 
 data "aws_ecs_cluster" "default" {
-  cluster_name = "default"
+  cluster_name = var.cluster_name
 }
 
 module "ecs_kong" {

variables.tf

@@ -91,9 +91,15 @@ variable "maintenance_window" {
   default     = null
 }
 
+variable "cluster_name" {
+  description = "Name of the cluster"
+  type        = string
+  default     = "default"
+}
+
 variable "ssl_policy" {
   type        = string
-  description = "(Optional) Name of the SSL Policy for the listener."
+  description = "Name of the SSL Policy for the listener."
   default     = "ELBSecurityPolicy-2016-08"
 }