Adds EKS (#4)

* adds support for base GCP resources in fresh accounts
* adds support for EKS

also: _BEEFIER INSTANCES_

clusters/aks/outputs.tf

@@ -31,5 +31,5 @@ output "console_url" {
 # this variable is used for testing purposes and has no bearing on the demo
 # see https://www.terraform.io/docs/language/values/outputs.html
 output "workspace_url" {
-  value = "https://app.terraform.io/app/a-demo-organization/workspaces/multi-cloud-k8s-aks"
+  value = "https://app.terraform.io/app/a-demo-organization/workspaces/${var.tfe_workspaces_prefix}-aks"
 }

clusters/doks/main.tf

@@ -11,7 +11,7 @@ resource "digitalocean_kubernetes_cluster" "cluster" {
 
   node_pool {
     name       = "worker-pool"
-    size       = "s-2vcpu-2gb"
+    size       = "s-4vcpu-8gb"
     node_count = 3
   }
 

clusters/doks/outputs.tf

@@ -25,5 +25,5 @@ output "console_url" {
 # this variable is used for testing purposes and has no bearing on the demo
 # see https://www.terraform.io/docs/language/values/outputs.html
 output "workspace_url" {
-  value = "https://app.terraform.io/app/a-demo-organization/workspaces/multi-cloud-k8s-doks"
+  value = "https://app.terraform.io/app/a-demo-organization/workspaces/${var.tfe_workspaces_prefix}-doks"
 }

clusters/doks/variables.tf

@@ -6,7 +6,7 @@ variable "tfe_workspaces_prefix" {
 
 variable "do_region" {
   type        = string
-  description = "he slug identifier for the region where the resources will be created."
+  description = "The slug identifier for the region where the resources will be created."
   default     = "sfo3" # San Francisco, CA
 }
 

clusters/eks/README.md

@@ -0,0 +1,21 @@
+# Workspace `EKS`
+
+> This directory contains [AWS](https://registry.terraform.io/providers/hashicorp/aws) Resources.
+
+## Requirements
+
+* Terraform CLI `1.0.8` or newer
+* an AWS [account](https://aws.amazon.com)
+
+## Downstream Consumption
+
+The Kubernetes Cluster can be consumed via the [aws_eks_cluster](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/eks_cluster) data source:
+
+```hcl
+# see https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/eks_cluster
+data "aws_eks_cluster" "cluster" {
+  name = "multi-cloud-k8s"
+}
+```
+
+The above example uses the default values for the `name` property. This may need to be changed for your situation.

clusters/eks/data-sources.tf

@@ -0,0 +1,13 @@
+# see https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/vpc
+data "aws_vpc" "default" {
+  default = true
+}
+
+# see https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/subnet
+data "aws_subnet" "default" {
+  for_each = toset(var.subnet_az)
+
+  availability_zone = "${var.aws_region}${each.key}"
+  default_for_az    = true
+  vpc_id            = data.aws_vpc.default.id
+}

clusters/eks/main.tf

@@ -0,0 +1,28 @@
+# see https://registry.terraform.io/modules/terraform-aws-modules/eks/aws/latest
+module "eks" {
+  source  = "terraform-aws-modules/eks/aws"
+  version = "17.20.0"
+
+  cluster_name    = var.tfe_workspaces_prefix
+  cluster_version = "1.20"
+  manage_aws_auth = false
+
+  subnets = [
+    data.aws_subnet.default["a"].id,
+    data.aws_subnet.default["c"].id,
+  ]
+
+  worker_groups = [{
+    name                 = "worker-group-1"
+    instance_type        = "t2.large"
+    asg_desired_capacity = 3
+    }
+  ]
+
+  workers_group_defaults = {
+    root_volume_type = "gp2"
+  }
+
+  write_kubeconfig = false
+  vpc_id           = data.aws_vpc.default.id
+}

clusters/eks/outputs.tf

@@ -0,0 +1,29 @@
+## see https://www.terraform.io/docs/language/values/outputs.html
+output "cluster_id" {
+  description = "EKS Cluster ID."
+  value       = module.eks.cluster_arn
+}
+
+# see https://www.terraform.io/docs/language/values/outputs.html
+output "cluster_name" {
+  description = "EKS Cluster Name."
+  value       = var.tfe_workspaces_prefix
+}
+
+# see https://www.terraform.io/docs/language/values/outputs.html
+output "cluster_region" {
+  description = "EKS Cluster Region."
+  value       = var.aws_region
+}
+
+# see https://www.terraform.io/docs/language/values/outputs.html
+output "console_url" {
+  description = "AWS Console URL."
+  value       = "https://${var.aws_region}.console.aws.amazon.com/ecs/home?region=${var.aws_region}#/clusters"
+}
+
+# this variable is used for testing purposes and has no bearing on the demo
+# see https://www.terraform.io/docs/language/values/outputs.html
+output "workspace_url" {
+  value = "https://app.terraform.io/app/a-demo-organization/workspaces/${var.tfe_workspaces_prefix}-eks"
+}

clusters/eks/providers.tf

@@ -0,0 +1,4 @@
+# see https://registry.terraform.io/providers/digitalocean/digitalocean/latest
+provider "aws" {
+  region = var.aws_region
+}

clusters/eks/terraform.tf

@@ -0,0 +1,23 @@
+terraform {
+  # see https://www.terraform.io/docs/language/settings/backends/remote.html
+  backend "remote" {
+    hostname     = "app.terraform.io"
+    organization = "a-demo-organization"
+
+    workspaces {
+      name = "multi-cloud-k8s-eks"
+    }
+  }
+
+  # see https://www.terraform.io/docs/language/settings/index.html#specifying-provider-requirements
+  required_providers {
+    # see https://registry.terraform.io/providers/hashicorp/aws/3.62.0/docs
+    aws = {
+      source  = "hashicorp/aws"
+      version = "3.62.0"
+    }
+  }
+
+  # see https://www.terraform.io/docs/language/settings/index.html#specifying-a-required-terraform-version
+  required_version = "1.0.8"
+}

clusters/eks/terraform.tfvars.sample

@@ -0,0 +1,2 @@
+aws_access_key = "..."
+aws_secret_key = "..."

clusters/eks/variables.tf

@@ -0,0 +1,21 @@
+variable "tfe_workspaces_prefix" {
+  type        = string
+  description = "Prefix for TFE Workspaces."
+  default     = "multi-cloud-k8s"
+}
+
+variable "aws_region" {
+  type        = string
+  description = "This is the AWS region."
+  default     = "us-west-1" # N. California, US
+}
+
+variable "subnet_az" {
+  type        = list(string)
+  description = "List of strings of Availability Zone suffixes."
+
+  default = [
+    "a",
+    "c",
+  ]
+}