feat: Add variable to allow changing tag condition on Karpenter iam-role-for-service-accounts-eks policy (#218)

Author: bryantbiggs

.pre-commit-config.yaml

@@ -23,7 +23,7 @@ repos:
           - '--args=--only=terraform_standard_module_structure'
           - '--args=--only=terraform_workspace_remote'
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.1.0
+    rev: v4.2.0
     hooks:
       - id: check-merge-conflict
       - id: end-of-file-fixer

modules/iam-role-for-service-accounts-eks/README.md

@@ -165,6 +165,7 @@ No modules.
 | <a name="input_karpenter_controller_cluster_id"></a> [karpenter\_controller\_cluster\_id](#input\_karpenter\_controller\_cluster\_id) | Cluster ID where the Karpenter controller is provisioned/managing | `string` | `"*"` | no |
 | <a name="input_karpenter_controller_node_iam_role_arns"></a> [karpenter\_controller\_node\_iam\_role\_arns](#input\_karpenter\_controller\_node\_iam\_role\_arns) | List of node IAM role ARNs Karpenter can use to launch nodes | `list(string)` | <pre>[<br>  "*"<br>]</pre> | no |
 | <a name="input_karpenter_controller_ssm_parameter_arns"></a> [karpenter\_controller\_ssm\_parameter\_arns](#input\_karpenter\_controller\_ssm\_parameter\_arns) | List of SSM Parameter ARNs that contain AMI IDs launched by Karpenter | `list(string)` | <pre>[<br>  "arn:aws:ssm:*:*:parameter/aws/service/*"<br>]</pre> | no |
+| <a name="input_karpenter_tag_key"></a> [karpenter\_tag\_key](#input\_karpenter\_tag\_key) | Tag key (`{key = value}`) applied to resources launched by Karpenter through the Karpenter provisioner | `string` | `"karpenter.sh/discovery"` | no |
 | <a name="input_max_session_duration"></a> [max\_session\_duration](#input\_max\_session\_duration) | Maximum CLI/API session duration in seconds between 3600 and 43200 | `number` | `null` | no |
 | <a name="input_node_termination_handler_sqs_queue_arns"></a> [node\_termination\_handler\_sqs\_queue\_arns](#input\_node\_termination\_handler\_sqs\_queue\_arns) | List of SQS ARNs that contain node termination events | `list(string)` | <pre>[<br>  "*"<br>]</pre> | no |
 | <a name="input_oidc_providers"></a> [oidc\_providers](#input\_oidc\_providers) | Map of OIDC providers where each provdier map should contain the `provider`, `provider_arns`, and `namespace_service_accounts` | `any` | `{}` | no |

modules/iam-role-for-service-accounts-eks/policies.tf

@@ -454,7 +454,7 @@ data "aws_iam_policy_document" "karpenter_controller" {
 
     condition {
       test     = "StringEquals"
-      variable = "ec2:ResourceTag/karpenter.sh/discovery"
+      variable = "ec2:ResourceTag/${var.karpenter_tag_key}"
       values   = [var.karpenter_controller_cluster_id]
     }
   }
@@ -469,7 +469,7 @@ data "aws_iam_policy_document" "karpenter_controller" {
 
     condition {
       test     = "StringEquals"
-      variable = "ec2:ResourceTag/karpenter.sh/discovery"
+      variable = "ec2:ResourceTag/${var.karpenter_tag_key}"
       values   = [var.karpenter_controller_cluster_id]
     }
   }

modules/iam-role-for-service-accounts-eks/variables.tf

@@ -165,6 +165,12 @@ variable "karpenter_controller_cluster_id" {
   default     = "*"
 }
 
+variable "karpenter_tag_key" {
+  description = "Tag key (`{key = value}`) applied to resources launched by Karpenter through the Karpenter provisioner"
+  type        = string
+  default     = "karpenter.sh/discovery"
+}
+
 variable "karpenter_controller_ssm_parameter_arns" {
   description = "List of SSM Parameter ARNs that contain AMI IDs launched by Karpenter"
   type        = list(string)