Service Connect Namespace Creation Not Implemented in Cluster Module

[yairt2]

Description

The cluster_service_connect_defaults variable accepts a namespace string and is documented to "Configure a default Service Connect namespace", but the module fails to create the required AWS Service Discovery namespace resource, causing Terraform to fail with an "invalid ARN" error.

Module Version
terraform-aws-ecs version: v6.2.2
Terraform version: v1.5.7
AWS provider: v6.9.0

• [ x] ✋ I have searched the open/closed issues and my issue is not listed.

Expected Behavior
When providing a cluster_service_connect_defaults configuration with a namespace string:

The module should:

Create an aws_service_discovery_http_namespace resource with the provided name
Use the ARN of the created namespace in the aws_ecs_cluster.service_connect_defaults.namespace field
Actual Behavior
The module directly passes the namespace string to the aws_ecs_cluster resource, which fails because AWS expects an ARN, not a string name.

Error Message
Root Cause Analysis
Current Implementation (Broken)
In main.tf:

dynamic "service_connect_defaults" {
  for_each = var.service_connect_defaults != null ? [var.service_connect_defaults] : []

  content {
    namespace = service_connect_defaults.value.namespace  # Passing string directly
  }
}

Variable Definition
In variables.tf

variable "service_connect_defaults" {
  description = "Configures a default Service Connect namespace"  # ❌ Misleading description
  type = object({
    namespace = string
  })
  default = null
}

(lines 58-64):

AWS API Requirement
According to AWS documentation, service_connect_defaults.namespace must be a Service Discovery namespace ARN, not a name string.

Proposed Solution: Implement Namespace Creation
Add namespace creation capability to the cluster module:

In main.tf add before the cluster resource:

resource "aws_service_discovery_http_namespace" "service_connect" {
  count = var.service_connect_defaults != null ? 1 : 0
  
  name        = var.service_connect_defaults.namespace
  description = "Service Connect namespace for ${var.name} ECS cluster"
  
  tags = var.tags
}

Update the cluster resource to use the created namespace ARN:

dynamic "service_connect_defaults" {
  for_each = var.service_connect_defaults != null ? [var.service_connect_defaults] : []

  content {
    namespace = aws_service_discovery_http_namespace.service_connect[0].arn
  }
}

Add output in :

output "service_connect_namespace_arn" {
  description = "ARN of the Service Connect namespace"
  value       = try(aws_service_discovery_http_namespace.service_connect[0].arn, null)
}

output "service_connect_namespace_name" {
  description = "Name of the Service Connect namespace" 
  value       = try(aws_service_discovery_http_namespace.service_connect[0].name, null)
}

if this is just a miss configuration on my part (which is always a possibility) please let me know.