fix: Use the default launch_template_version to determine latest versus

default launch_template version.

Signed-off-by: Benjamin Ash <[email protected]>

Author: Benjamin Ash

examples/instance_refresh/main.tf

@@ -242,7 +242,6 @@ module "eks" {
       public_ip                            = true
       metadata_http_put_response_hop_limit = 3
       use_latest_version                   = true
-      update_default_version               = true
       instance_refresh_triggers            = ["tag"]
       tags = [
         {

local.tf

@@ -75,8 +75,7 @@ locals {
     root_block_device_name               = data.aws_ami.eks_worker.root_device_name # Root device name for workers. If non is provided, will assume default AMI was used.
     root_kms_key_id                      = ""                                       # The KMS key to use when encrypting the root storage device
     launch_template_id                   = null                                     # The id of the launch template used for managed node_groups
-    launch_template_version              = "$Latest"                                # The latest version of the launch template to use in the autoscaling and node groups. Must be explicitly set in `worker_groups_launch_template`.
-    use_latest_version                   = true                                     # Set the autoscaling group to use the latest version of the launch template, otherwise the default template version will be used. Ignored when `launch_template_version` is set in `worker_groups_launch_template`.
+    launch_template_version              = "$Latest"                                # The latest version of the launch template to use in the autoscaling group
     update_default_version               = false                                    # Update the autoscaling group launch template's default version upon each update
     launch_template_placement_tenancy    = "default"                                # The placement tenancy for instances
     launch_template_placement_group      = null                                     # The name of the placement group into which to launch the instances, if any.

workers_launch_template.tf

@@ -143,9 +143,9 @@ resource "aws_autoscaling_group" "workers_launch_template" {
             "launch_template_version",
             lookup(
               var.worker_groups_launch_template[count.index],
-              "use_latest_version",
-              local.workers_group_defaults["use_latest_version"]
-            )
+              "launch_template_version",
+              local.workers_group_defaults["launch_template_version"]
+            ) == "$Latest"
             ? aws_launch_template.workers_launch_template.*.latest_version[count.index]
             : aws_launch_template.workers_launch_template.*.default_version[count.index]
           )
@@ -177,9 +177,9 @@ resource "aws_autoscaling_group" "workers_launch_template" {
         "launch_template_version",
         lookup(
           var.worker_groups_launch_template[count.index],
-          "use_latest_version",
-          local.workers_group_defaults["use_latest_version"]
-        )
+          "launch_template_version",
+          local.workers_group_defaults["launch_template_version"]
+        ) == "$Latest"
         ? aws_launch_template.workers_launch_template.*.latest_version[count.index]
         : aws_launch_template.workers_launch_template.*.default_version[count.index]
       )