feat: Add multiple selectors on the creation of Fargate profile (#1378)

BREAKING CHANGES: To support multiple selectors for Fargate profiles, we introduced the `selectors` argument which is a list of map. This will break previous configuration with  a single selector `namespace` and `labels`. You'll need to rewrite your configuration to use the `selectors` argument. See [examples](https://github.com/terraform-aws-modules/terraform-aws-eks/blob/master/examples/fargate/main.tf) dans [docs](https://github.com/terraform-aws-modules/terraform-aws-eks/blob/master/modules/fargate/README.md) for details.

Co-authored-by: Lena <lena.mantziou@nationwide.co.uk>

examples/fargate/main.tf

@@ -72,15 +72,25 @@ module "eks" {
   vpc_id = module.vpc.vpc_id
 
   fargate_profiles = {
-    example = {
-      namespace = "default"
-
-      # Kubernetes labels for selection
-      # labels = {
-      #   Environment = "test"
-      #   GithubRepo  = "terraform-aws-eks"
-      #   GithubOrg   = "terraform-aws-modules"
-      # }
+    default = {
+      name = "default"
+      selectors = [
+        {
+          namespace = "kube-system"
+          labels = {
+            k8s-app = "kube-dns"
+          }
+        },
+        {
+          namespace = "default"
+          # Kubernetes labels for selection
+          # labels = {
+          #   Environment = "test"
+          #   GithubRepo  = "terraform-aws-eks"
+          #   GithubOrg   = "terraform-aws-modules"
+          # }
+        }
+      ]
 
       # using specific subnets instead of all the ones configured in eks
       # subnets = ["subnet-0ca3e3d1234a56c78"]

modules/fargate/README.md

@@ -11,10 +11,9 @@ Helper submodule to create and manage resources related to `aws_eks_fargate_prof
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
 | name | Fargate profile name | `string` | Auto generated in the following format `[cluster_name]-fargate-[fargate_profile_map_key]`| no |
-| namespace | Kubernetes namespace for selection | `string` | n/a | yes |
-| labels | Key-value map of Kubernetes labels for selection | `map(string)` | `{}` | no |
-| tags | Key-value map of resource tags. Will be merged with root module tags. | `map(string)` | `var.tags` | no |
+| selectors | A list of Kubernetes selectors. See examples/fargate/main.tf for example format. | <pre>list(map({<br>namespace = string<br>labels = map(string)<br>}))</pre>| `[]` | no |
 | subnets | List of subnet IDs. Will replace the root module subnets. | `list(string)` | `var.subnets` | no |
+| tags | Key-value map of resource tags. Will be merged with root module tags. | `map(string)` | `var.tags` | no |
 
 <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
 ## Requirements

modules/fargate/fargate.tf

@@ -20,9 +20,13 @@ resource "aws_eks_fargate_profile" "this" {
   pod_execution_role_arn = local.pod_execution_role_arn
   subnet_ids             = lookup(each.value, "subnets", var.subnets)
   tags                   = each.value.tags
-  selector {
-    namespace = each.value.namespace
-    labels    = lookup(each.value, "labels", null)
+
+  dynamic "selector" {
+    for_each = each.value.selectors
+    content {
+      namespace = selector.value["namespace"]
+      labels    = lookup(selector.value, "labels", {})
+    }
   }
 
   depends_on = [var.eks_depends_on]