Kubernetes cluster creation using Kops and terraform

Create the kubernetes resources with terraform, 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 kop installed to your computer.

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

This cluster is private, that 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 that is exported under key.pem. This key will not be committed, so don’t loose it ;)

Module usage

the modules 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}"
}