Feature: k8s addons (#8)

* add helm provider

* add eks output

* metrics server

* add depends

* fmt

modules/k8s/addons.tf

@@ -0,0 +1,9 @@
+resource "helm_release" "metrics-server" {
+  name       = "metrics-server"
+  repository = "https://kubernetes-sigs.github.io/metrics-server/"
+  chart      = "metrics-server"
+  version    = "3.10.0"
+
+  namespace = "kube-system"
+
+}

modules/k8s/main.tf

@@ -74,6 +74,7 @@ locals {
 }
 
 resource "local_file" "kubeconfig" {
-  content  = local.kubeconfig
-  filename = "kubeconfig_${module.eks.cluster_name}"
+  content    = local.kubeconfig
+  filename   = "kubeconfig_${module.eks.cluster_name}"
+  depends_on = [module.eks]
 }

modules/k8s/outputs.tf

@@ -0,0 +1,11 @@
+output "kubeconfig_file" {
+  value = local_file.kubeconfig.filename
+}
+
+output "cluster_endpoint" {
+  value = module.eks.cluster_endpoint
+}
+
+output "cluster_ca_cert" {
+  value = module.eks.cluster_certificate_authority_data
+}

provider.tf

@@ -4,6 +4,10 @@ terraform {
       source  = "hashicorp/aws"
       version = "5.24.0"
     }
+    helm = {
+      source  = "hashicorp/helm"
+      version = "2.10.1"
+    }
   }
 }
 
@@ -17,4 +21,17 @@ provider "aws" {
       Managed_by = "terraform"
     }
   }
+}
+
+provider "helm" {
+  kubernetes {
+
+    host                   = module.k8s.cluster_endpoint
+    cluster_ca_certificate = base64decode(module.k8s.cluster_ca_cert)
+    exec {
+      api_version = "client.authentication.k8s.io/v1beta1"
+      args        = ["eks", "get-token", "--cluster-name", var.eks-config.name]
+      command     = "aws"
+    }
+  }
 }