Accepting additional role for additional role arn

Author: shubhamrai1993

main.tf

@@ -7,7 +7,7 @@ module "karpenter_irsa_role" {
   attach_karpenter_controller_policy = true
 
   karpenter_controller_cluster_id         = var.cluster_name
-  karpenter_controller_node_iam_role_arns = var.controller_node_iam_role_arns
+  karpenter_controller_node_iam_role_arns = flatten([var.controller_node_iam_role_arn, var.additional_controller_node_iam_role_arns])
 
   attach_vpc_cni_policy = true
   vpc_cni_enable_ipv4   = true

variables.tf

@@ -18,9 +18,15 @@ variable "oidc_provider_arn" {
   type        = string
 }
 
-variable "controller_node_iam_role_arns" {
-  description = "The node iam role arns to support for karpenter"
+variable "controller_node_iam_role_arn" {
+  description = "The node iam role for the initial node group to be used by karpenter"
+  type        = string
+}
+
+variable "additional_controller_node_iam_role_arns" {
+  description = "The additional node iam roles to be used by karpenter"
   type        = list(string)
+  default = []
 }
 
 variable "controller_nodegroup_name" {