Pass in custom metadata options to the eks launch template

aws/cluster/modules/eks-node-group/main.tf

@@ -9,7 +9,7 @@ resource "aws_eks_node_group" "this" {
  subnet_ids = [each.value.id]
 
  dynamic "launch_template" {
- for_each = var.user_data != null ? [aws_launch_template.this[0]] : []
+ for_each = var.metadata_options != {} ? [aws_launch_template.this[0]] : []
 
  content {
  id = launch_template.value.id
@@ -40,10 +40,22 @@ resource "aws_eks_node_group" "this" {
  }
 }
 
+# resource "aws_launch_template" "this" {
+# count = var.user_data != null ? 1 : 0
+
+# user_data = base64encode(var.user_data)
+# }
+
 resource "aws_launch_template" "this" {
- count = var.user_data != null ? 1 : 0
+ count = var.metadata_options != {} ? 1 : 0
 
- user_data = base64encode(var.user_data)
+ metadata_options {
+ http_endpoint = lookup(var.metadata_options, "http_endpoint", "enabled")
+ http_tokens = lookup(var.metadata_options, "http_tokens", "optional")
+ http_put_response_hop_limit = lookup(var.metadata_options, "htthttp_put_response_hop_limit", "1")
+ http_protocol_ipv6 = lookup(var.metadata_options, "http_protocol_ipv6", "disabled")
+ instance_metadata_tags = lookup(var.metadata_options, "instance_metadata_tags", "disabled")
+ }
 }
 
 locals {
@@ -54,4 +66,6 @@ locals {
  var.subnets[*].availability_zone,
  var.subnets
  )
+
+
 }

aws/cluster/modules/eks-node-group/variables.tf

@@ -75,3 +75,9 @@ variable "user_data" {
  description = "Optional user data script for the launch template"
  default = null # Default to an empty string if no user data is provided
 }
+
+variable "metadata_options" {
+ type = map(string)
+ description = "Customize the metadata options for the cluster nodes"
+ default = {}
+}