fix: make root_block_device dynamic

Author: arihant-2310

README.md

@@ -28,10 +28,6 @@ module "app_cluster" {
       root_block_device = {
         volume_type = "gp3"
         volume_size = 30
-        tags = {
-          "Environment" = "staging"
-          "ManagedBy"   = "Terraform"
-        }
       }
       security_group_ids = ["sg-01", "sg-02"]
     },
@@ -172,7 +168,7 @@ No modules.
 | launch_configs.user_data_base64                   	| Base64 encoded userdata.                                                                                                                    	| `string`       	| n/a     	| yes      	|
 | launch_configs.iam_instance_profile_name          	| Name of the IAM instance profile to attach to the EC2 instance.                                                                             	| `string`       	| n/a     	| yes      	|
 | launch_configs.security_group_ids                 	| List of security group ids to attach to the EC2 instance.                                                                                   	| `list(string)` 	| n/a     	| yes      	|
-
+| launch_configs.root_block_device                   | root block device configuration
 
 ### Outputs
 No outputs.

auto_scaling_groups.tf

@@ -5,7 +5,15 @@ resource "aws_launch_configuration" "ecs_launch_config" {
   instance_type        = each.value.instance_type
   user_data_base64     = each.value.user_data_base64
   iam_instance_profile = each.value.iam_instance_profile_name
-  root_block_device    = each.value.root_block_device || {}
+
+  dynamic "root_block_device" {
+    for_each = each.value.root_block_device != null ? [each.value.root_block_device] : []
+
+    content {
+      volume_type = root_block_device.value.volume_type
+      volume_size = root_block_device.value.volume_size
+    }
+  }
   security_groups      = each.value.security_group_ids
   lifecycle {
     create_before_destroy = true

variables.tf

@@ -41,13 +41,8 @@ variable "launch_configs" {
     user_data_base64          = string
     iam_instance_profile_name = string
     root_block_device = object({
-      ebs_volume_type = string
-      ebs_volume_size = number
-      tags = object({
-        Name        = string
-        Environment = string
-        ManagedBy   = string
-      })
+      volume_type = string
+      volume_size = number
     })
     security_group_ids = list(string)
   }))