terraform-aws-eks/examples/basic/main.tf

terraform {
  required_version = ">= 0.11.8"
}

provider "aws" {
  version = ">= 2.6.0"
  region  = "${var.region}"
}

provider "random" {
  version = "= 1.3.1"
}

data "aws_availability_zones" "available" {}

locals {
  cluster_name = "test-eks-${random_string.suffix.result}"
}

resource "random_string" "suffix" {
  length  = 8
  special = false
}

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",
    ]
  }
}

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" "all_worker_mgmt" {
  name_prefix = "all_worker_management"
  vpc_id      = "${module.vpc.vpc_id}"

  ingress {
    from_port = 22
    to_port   = 22
    protocol  = "tcp"

    cidr_blocks = [
      "10.0.0.0/8",
      "172.16.0.0/12",
      "192.168.0.0/16",
    ]
  }
}

module "vpc" {
  source             = "terraform-aws-modules/vpc/aws"
  version            = "1.60.0"
  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

  tags = {
    "kubernetes.io/cluster/${local.cluster_name}" = "shared"
  }

  public_subnet_tags = {
    "kubernetes.io/cluster/${local.cluster_name}" = "shared"
  }

  private_subnet_tags = {
    "kubernetes.io/cluster/${local.cluster_name}" = "shared"
    "kubernetes.io/role/internal-elb"             = "true"
  }
}

module "eks" {
  source       = "../.."
  cluster_name = "${local.cluster_name}"
  subnets      = ["${module.vpc.private_subnets}"]

  tags = {
    Environment = "test"
    GithubRepo  = "terraform-aws-eks"
    GithubOrg   = "terraform-aws-modules"
  }

  vpc_id             = "${module.vpc.vpc_id}"
  worker_group_count = 2

  worker_groups = [
    {
      name                          = "worker-group-1"
      instance_type                 = "t2.small"
      additional_userdata           = "echo foo bar"
      asg_desired_capacity          = 2
      additional_security_group_ids = "${aws_security_group.worker_group_mgmt_one.id}"
    },
    {
      name                          = "worker-group-2"
      instance_type                 = "t2.medium"
      additional_userdata           = "echo foo bar"
      additional_security_group_ids = "${aws_security_group.worker_group_mgmt_two.id}"
      asg_desired_capacity          = 1
    },
  ]

  worker_additional_security_group_ids = ["${aws_security_group.all_worker_mgmt.id}"]
  map_roles                            = "${var.map_roles}"
  map_roles_count                      = "${var.map_roles_count}"
  map_users                            = "${var.map_users}"
  map_users_count                      = "${var.map_users_count}"
  map_accounts                         = "${var.map_accounts}"
  map_accounts_count                   = "${var.map_accounts_count}"
}