Configure 'cpu_credits' for workers (#253) (#426)

* Configure 'cpu_credits' for workers (#253)

* Updated CHANGELOG(#253)

* Moved default to settings for launch templates(#253)

CHANGELOG.md

@@ -13,6 +13,7 @@ project adheres to [Semantic Versioning](http://semver.org/).
 
  - Option to set a KMS key for the log group and encrypt it (by @till-krauss)
  - Output the name of the cloudwatch log group (by @gbooth27)
+ - Added `cpu_credits` param for the workers defined in `worker_groups_launch_template` (by @a-shink)
  - Write your awesome addition here (by @you)
 
 ### Changed

local.tf

@@ -72,6 +72,7 @@ locals {
     launch_template_placement_group   = ""                                       # The name of the placement group into which to launch the instances, if any.
     root_encrypted                    = ""                                       # Whether the volume should be encrypted or not
     eni_delete                        = true                                     # Delete the ENI on termination (if set to false you will have to manually delete before destroying)
+    cpu_credits                       = "standard"                               # T2/T3 unlimited mode, can be 'standard' or 'unlimited'. Used 'standard' mode as default to avoid paying higher costs
     # Settings for launch templates with mixed instances policy
     override_instance_types                  = ["m5.large", "m5a.large", "m5d.large", "m5ad.large"] # A list of override instance types for mixed instances policy
     on_demand_allocation_strategy            = "prioritized"                                        # Strategy to use when launching on-demand instances. Valid values: prioritized.

workers_launch_template.tf

@@ -200,6 +200,14 @@ resource "aws_launch_template" "workers_launch_template" {
     ),
   )
 
+  credit_specification {
+    cpu_credits = lookup(
+      var.worker_groups_launch_template[count.index],
+      "cpu_credits",
+      local.workers_group_defaults["cpu_credits"]
+    )
+  }
+
   monitoring {
     enabled = lookup(
       var.worker_groups_launch_template[count.index],

workers_launch_template_mixed.tf

@@ -250,6 +250,14 @@ resource "aws_launch_template" "workers_launch_template_mixed" {
     ),
   )
 
+  credit_specification {
+    cpu_credits = lookup(
+      var.worker_groups_launch_template_mixed[count.index],
+      "cpu_credits",
+      local.workers_group_defaults["cpu_credits"]
+    )
+  }
+
   monitoring {
     enabled = lookup(
       var.worker_groups_launch_template_mixed[count.index],