Added parameter for instance type (#91)

* Added parameter for instance type
See #89.
Added a variable to change the default instance type for the EKS Cluster

* Added additional parameters for size and version

examples/eks-cluster-with-vpc/main.tf

@@ -44,7 +44,7 @@ module "eks_blueprints" {
   source = "github.com/aws-ia/terraform-aws-eks-blueprints?ref=v4.13.1"
 
   cluster_name    = local.cluster_name
-  cluster_version = "1.24"
+  cluster_version = var.eks_version
 
   vpc_id             = module.vpc.vpc_id
   private_subnet_ids = module.vpc.private_subnets
@@ -52,8 +52,8 @@ module "eks_blueprints" {
   managed_node_groups = {
     mg_5 = {
       node_group_name = "managed-ondemand"
-      instance_types  = ["t3.xlarge"]
-      min_size        = 2
+      instance_types  = [var.managed_node_instance_type]
+      min_size        = var.managed_node_min_size
       subnet_ids      = module.vpc.private_subnets
     }
   }

examples/eks-cluster-with-vpc/variables.tf

@@ -7,3 +7,18 @@ variable "aws_region" {
   description = "AWS Region"
   type        = string
 }
+variable "managed_node_instance_type" {
+  description = "Instance type for the cluster managed node groups"
+  type        = string
+  default     = "t3.xlarge"
+}
+variable "managed_node_min_size" {
+  description = "Minumum number of instances in the node group"
+  type        = number
+  default     = 2
+}
+variable "eks_version" {
+  type        = string
+  description = "EKS Cluster version"
+  default     = "1.24"
+}