Kubernetes cluster creation using Kops and Terraform

Create the Kubernetes resources with Terraform and generate the cluster configuration with Kops. This repo is an adaptation of this module.

Get started

Clone the repository and make it yours

git clone https://github.com/markthebault/kubernetes-kops-terraform.git

Create the cluster

You need to have Terraform and kops installed on your computer.

terraform init
terraform plan --out=plan.out
terraform apply plan.out
cat ~/.kube/config

This cluster is private, which means there is no way to access it from the internet. You will need to use a bastion to access the cluster. A bastion host is provided with the key exported under key.pem. This key will not be committed, so don’t lose it ;)

Module usage

The module is located under ./modules/.

module "kops" {
  source               = "modules/tf-kops-cluster"
  sg_allow_ssh         = "${aws_security_group.allow_ssh.id}"
  sg_allow_http_s      = "${aws_security_group.allow_http.id}"
  cluster_name         = "${var.cluster_name}"
  cluster_fqdn         = "${var.cluster_name}.${aws_route53_zone.main.name}"
  route53_zone_id      = "${aws_route53_zone.main.id}"
  kops_s3_bucket_arn   = "${aws_s3_bucket.kops.arn}"
  kops_s3_bucket_id    = "${aws_s3_bucket.kops.id}"
  vpc_id               = "${module.vpc.vpc_id}"
  instance_key_name    = "${aws_key_pair.generated_key.key_name}"
  internet_gateway_id  = "${module.vpc.igw_id}"
  master_instance_type = "t2.medium"
  node_instance_type   = "t2.medium"
  kubernetes_version   = "${var.kubernetes_version}"
  kops_dns_mode        = "private"

  public_subnet_cidr_blocks = "${var.kubernetes_public_subnets_cidr}" #For the LB
  private_subnet_ids        = "${module.vpc.private_subnets}"
}