feat: Tags passed into worker_groups_launch_template extend var.tags for the volumes (#1397)

Author: lisfo4ka

examples/launch_templates/main.tf

@@ -53,6 +53,11 @@ module "eks" {
       instance_type        = "t3.small"
       asg_desired_capacity = 2
       public_ip            = true
+      tags = [{
+        key                 = "ExtraTag"
+        value               = "TagValue"
+        propagate_at_launch = true
+      }]
     },
     {
       name                 = "worker-group-2"

local.tf

@@ -49,7 +49,7 @@ locals {
   policy_arn_prefix = "arn:${data.aws_partition.current.partition}:iam::aws:policy"
   workers_group_defaults_defaults = {
     name                              = "count.index"               # Name of the worker group. Literal count.index will never be used but if name is not set, the count.index interpolation will be used.
-    tags                              = []                          # A list of map defining extra tags to be applied to the worker group autoscaling group.
+    tags                              = []                          # A list of maps defining extra tags to be applied to the worker group autoscaling group and volumes.
     ami_id                            = ""                          # AMI ID for the eks linux based workers. If none is provided, Terraform will search for the latest version of their EKS optimized worker AMI based on platform.
     ami_id_windows                    = ""                          # AMI ID for the eks windows based workers. If none is provided, Terraform will search for the latest version of their EKS optimized worker AMI based on platform.
     asg_desired_capacity              = "1"                         # Desired worker capacity in the autoscaling group and changing its value will not affect the autoscaling group's desired capacity because the cluster-autoscaler manages up and down scaling of the nodes. Cluster-autoscaler add nodes when pods are in pending state and remove the nodes when they are not required by modifying the desired_capacity of the autoscaling group. Although an issue exists in which if the value of the asg_min_size is changed it modifies the value of asg_desired_capacity.

workers_launch_template.tf

@@ -547,6 +547,11 @@ resource "aws_launch_template" "workers_launch_template" {
         )}-eks_asg"
       },
       var.tags,
+      {
+        for tag in lookup(var.worker_groups_launch_template[count.index], "tags", local.workers_group_defaults["tags"]) :
+        tag["key"] => tag["value"]
+        if tag["key"] != "Name" && tag["propagate_at_launch"]
+      }
     )
   }