Use terraform-aws-eks module

This way of configuring EKS cluster is the most popular, so we will use
this github source for deployment.
There is an issue with UDP ping service deploying on AWS, disabling it
for initial version.
Closes googleforgames#966.

build/modules/eks/eks.tf

@@ -19,46 +19,148 @@ provider "aws" {
 
 
 resource "aws_vpc" "example" {
- cidr_block = "10.0.0.0/16"
- enable_dns_hostnames = true
- enable_dns_support = true
- tags = "${
-   map(
-    "Name", "terraform-eks",
-    "kubernetes.io/cluster/example", "shared",
-   )
- }"
+  cidr_block           = "10.0.0.0/16"
+  enable_dns_hostnames = true
+  enable_dns_support   = true
+  tags = "${
+    map(
+      "Name", "terraform-eks",
+      "kubernetes.io/cluster/example", "shared",
+    )
+  }"
+}
+
+data "aws_availability_zones" "available" {
 }
 
 resource "aws_vpc" "main" {
-cidr_block = "10.0.0.0/16"
-enable_dns_hostnames = true
-enable_dns_support = true
-tags = "${
-   map(
-    "Name", "terraform-eks",
-    "kubernetes.io/cluster/example", "shared",
-   )
-}"
+  cidr_block           = "10.0.0.0/16"
+  enable_dns_hostnames = true
+  enable_dns_support   = true
+  tags = "${
+    map(
+      "Name", "terraform-eks",
+      "kubernetes.io/cluster/example", "shared",
+    )
+  }"
+}
+
+resource "aws_security_group" "worker_group_mgmt_one" {
+  name_prefix = "worker_group_mgmt_one"
+  vpc_id      = module.vpc.vpc_id
+
+  ingress {
+    from_port = 22
+    to_port   = 22
+    protocol  = "tcp"
+
+    cidr_blocks = [
+      "10.0.0.0/8",
+    ]
+  }
+  ingress {
+    from_port = 7000
+    to_port   = 8000
+    protocol  = "udp"
+
+    cidr_blocks = [
+      "10.0.0.0/8",
+    ]
+  }
 }
 
+resource "aws_security_group" "worker_group_mgmt_two" {
+  name_prefix = "worker_group_mgmt_two"
+  vpc_id      = module.vpc.vpc_id
+
+  ingress {
+    from_port = 22
+    to_port   = 22
+    protocol  = "tcp"
+
+    cidr_blocks = [
+      "192.168.0.0/16",
+    ]
+  }
+}
+
+
+
+resource "aws_security_group" "worker_group_mgmt_three" {
+  name_prefix = "worker_group_mgmt_three"
+  vpc_id      = module.vpc.vpc_id
+
+  ingress {
+    from_port = 22
+    to_port   = 22
+    protocol  = "tcp"
+
+    cidr_blocks = [
+      "192.168.0.0/16",
+    ]
+  }
+}
+
+module "vpc" {
+  source  = "terraform-aws-modules/vpc/aws"
+  version = "2.6.0"
+
+  name                 = "test-vpc"
+  cidr                 = "10.0.0.0/16"
+  azs                  = data.aws_availability_zones.available.names
+  private_subnets      = ["10.0.1.0/24", "10.0.2.0/24", "10.0.3.0/24"]
+  public_subnets       = ["10.0.4.0/24", "10.0.5.0/24", "10.0.6.0/24"]
+  enable_nat_gateway   = true
+  single_nat_gateway   = true
+  enable_dns_hostnames = true
+
+  tags = {
+    "kubernetes.io/cluster/${var.cluster_name}" = "shared"
+  }
+
+  public_subnet_tags = {
+    "kubernetes.io/cluster/${var.cluster_name}" = "shared"
+    "kubernetes.io/role/elb"                    = "1"
+  }
+
+  private_subnet_tags = {
+    "kubernetes.io/cluster/${var.cluster_name}" = "shared"
+    "kubernetes.io/role/internal-elb"           = "1"
+  }
+}
+
+
 #
 # main EKS terraform resource definition
 #
-resource "aws_eks_cluster" "main" {
-  name = "${var.cluster_name}"
+module "eks" {
+  source          = "git::github.com/terraform-aws-modules/terraform-aws-eks.git?ref=v5.1.0"
+  cluster_name    = "${var.cluster_name}"
+  cluster_version = "1.12"
+
+  vpc_id  = module.vpc.vpc_id
+  subnets = module.vpc.private_subnets
   worker_groups = [
     {
-      name                          = "worker-group-1"
-      instance_type                 = "t2.micro"
-      asg_desired_capacity          = 5
+      name                          = "default"
+      instance_type                 = "${var.machine_type}"
+      asg_desired_capacity          = 3
       additional_security_group_ids = [aws_security_group.worker_group_mgmt_one.id]
     },
+    // TODO: add two additional Node Pools with taints for metrics and system
+    /*
     {
-      name                          = "worker-group-2"
-      instance_type                 = "t2.micro"
+      name                          = "agones-system"
+      instance_type                 = "${var.machine_type}"
       additional_security_group_ids = [aws_security_group.worker_group_mgmt_two.id]
-      asg_desired_capacity          = 5
+      asg_desired_capacity          = 1
+    },
+    {
+      name                          = "agones-metrics"
+      instance_type                 = "${var.machine_type}"
+      additional_security_group_ids = [aws_security_group.worker_group_mgmt_three.id]
+      asg_desired_capacity          = 1
     },
+    */
   ]
 }

build/modules/eks/outputs.tf

@@ -11,23 +11,52 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+output "cluster_endpoint" {
+  description = "Endpoint for EKS control plane."
+  value       = module.eks.cluster_endpoint
+}
+
+output "cluster_security_group_id" {
+  description = "Security group ids attached to the cluster control plane."
+  value       = module.eks.cluster_security_group_id
+}
+
+output "kubectl_config" {
+  description = "kubectl config as generated by the module."
+  value       = module.eks.kubeconfig
+}
+
+output "config_map_aws_auth" {
+  description = "A kubernetes configuration to authenticate to this EKS cluster."
+  value       = module.eks.config_map_aws_auth
+}
+
+output "region" {
+  description = "AWS region."
+  value       = var.region
+}
+
+
 
 output "cluster_ca_certificate" {
-  value = "${base64decode(aws_eks_cluster.main.kube_config.0.cluster_ca_certificate)}"
+  value = "${base64decode( module.eks.cluster_certificate_authority_data)}"
 }
 
+output "host" {
+  depends_on = ["module.eks"]
+  value = "${ module.eks.cluster_endpoint}"
+}
+/*
 output "client_certificate" {
-  value = "${aws_eks_cluster.main.kube_config.0.client_certificate}"
+  value = "${ module.eks.kubeconfig.client_certificate}"
 }
 
 output "kube_config" {
-  value = "${aws_eks_cluster.main.kube_config_raw}"
+  value = "${ module.eks.kubeconfig}"
 }
 
-output "host" {
-  value = "${aws_eks_cluster.main.kube_config.0.host}"
-}
 
 output "token" {
-  value = "${aws_eks_cluster.main.kube_config.0.password}"
+  value = "${ module.eks.kubeconfig.password}"
 }
+*/

build/modules/eks/variables.tf

@@ -19,3 +19,48 @@ variable "cluster_name" {
 variable "region" {
   default = "us-west-2"
 }
+
+variable "machine_type" {
+  default = "t2.large"
+}
+
+variable "map_accounts" {
+  description = "Additional AWS account numbers to add to the aws-auth configmap."
+  type        = list(string)
+
+  default = [
+    "777777777777",
+    "888888888888",
+  ]
+}
+
+variable "map_roles" {
+  description = "Additional IAM roles to add to the aws-auth configmap."
+  type        = list(map(string))
+
+  default = [
+    {
+      role_arn = "arn:aws:iam::66666666666:role/role1"
+      username = "role1"
+      group    = "system:masters"
+    },
+  ]
+}
+
+variable "map_users" {
+  description = "Additional IAM users to add to the aws-auth configmap."
+  type        = list(map(string))
+
+  default = [
+    {
+      user_arn = "arn:aws:iam::66666666666:user/user1"
+      username = "user1"
+      group    = "system:masters"
+    },
+    {
+      user_arn = "arn:aws:iam::66666666666:user/user2"
+      username = "user2"
+      group    = "system:masters"
+    },
+  ]
+}

build/modules/helm/helm.tf

@@ -124,10 +124,15 @@ resource "helm_release" "agones" {
   }
 
   set {
-    name  = " agones.ping.http.serviceType"
+    name  = "agones.ping.http.serviceType"
     value = "${var.ping_service_type}"
   }
 
+  set {
+    name = "agones.ping.udp.expose"
+    value ="${var.udp_expose}"
+  }
+
   set {
     name  = "agones.ping.udp.serviceType"
     value = "${var.ping_service_type}"

build/modules/helm/variables.tf

@@ -22,6 +22,10 @@ variable "agones_version" {
   default = ""
 }
 
+variable "udp_expose" {
+  default = "true"
+}
+
 variable "host" {}
 
 variable "token" {}

examples/terraform-submodules/eks/module.tf

@@ -0,0 +1,66 @@
+// Copyright 2019 Google LLC All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+// Run:
+//  terraform apply [-var agones_version="0.12.0"]
+
+// Install latest version of agones
+variable "agones_version" {
+  default = "0.12.0"
+}
+variable "cluster_name" {
+  default = "test-cluster"
+}
+
+variable "region" {
+  default = "us-west-2"
+}
+
+provider "aws" {
+  version = ">= 2.11"
+  region  = var.region
+}
+
+variable "machine_type" { default = "t2.large" }
+
+module "eks_cluster" {
+  source = "../../../build/modules/eks"
+
+  machine_type = "${var.machine_type}"
+  cluster_name = "${var.cluster_name}"
+}
+
+data "aws_eks_cluster_auth" "example" {
+  name = "${var.cluster_name}"
+}
+
+module "helm_agones" {
+  source = "git::https://github.com/googleforgames/agones.git//build/modules/helm/?ref=master"
+
+  udp_expose     = "false"
+  agones_version = "${var.agones_version}"
+  values_file    = ""
+  chart          = "agones"
+  host           = "${module.eks_cluster.host}"
+  token          = "${data.aws_eks_cluster_auth.example.token}"
+  cluster_ca_certificate = "${module.eks_cluster.cluster_ca_certificate}"
+}
+
+output "host" {
+  value = "${module.eks_cluster.host}"
+}
+output "cluster_ca_certificate" {
+  value = "${module.eks_cluster.cluster_ca_certificate}"
+}