nicusX

resource "aws_vpc" "kubernetes" {
  cidr_block = "10.43.0.0/16"
  enable_dns_hostnames = true
}

resource "aws_subnet" "kubernetes" {
  vpc_id = "${aws_vpc.kubernetes.id}"
  cidr_block = "10.43.0.0/16"
  availability_zone = "eu-west-1a"
}

nicusX

resource "aws_internet_gateway" "gw" {
  vpc_id = "${aws_vpc.kubernetes.id}"
}

resource "aws_route_table" "kubernetes" {
    vpc_id = "${aws_vpc.kubernetes.id}"
    route {
      cidr_block = "0.0.0.0/0"
      gateway_id = "${aws_internet_gateway.gw.id}"
    }

nicusX

resource "aws_instance" "etcd" {
    count = 3
    ami = "ami-1967056a" // Unbuntu 16.04 LTS HVM, EBS-SSD
    instance_type = "t2.micro"

    subnet_id = "${aws_subnet.kubernetes.id}"
    private_ip = "${cidrhost("10.43.0.0/16", 10 + count.index)}"
    associate_public_ip_address = true

    availability_zone = "eu-west-1a"

nicusX

resource "aws_elb" "kubernetes_api" {
    name = "kube-api"
    instances = ["${aws_instance.controller.*.id}"]
    subnets = ["${aws_subnet.kubernetes.id}"]
    cross_zone_load_balancing = false

    security_groups = ["${aws_security_group.kubernetes_api.id}"]

    listener {
      lb_port = 6443

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resource "aws_instance" "worker" {
    count = 3
    ...
    tags {
      Owner = "Lorenzo"
      Name = "worker-${count.index}"
      ansibleFilter = "Kubernetes01"
      ansibleNodeType = "worker"
      ansibleNodeName = "worker${count.index}"
    }

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resource "aws_security_group" "kubernetes" {
  vpc_id = "${aws_vpc.kubernetes.id}"
  name = "kubernetes"

  # Allow all outbound
  egress {
    from_port = 0
    to_port = 0
    protocol = "-1"
    cidr_blocks = ["0.0.0.0/0"]

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# Generate Certificates
data "template_file" "certificates" {
    template = "${file("${path.module}/template/kubernetes-csr.json")}"
    depends_on = ["aws_elb.kubernetes_api","aws_instance.etcd","aws_instance.controller","aws_instance.worker"]
    vars {
      kubernetes_api_elb_dns_name = "${aws_elb.kubernetes_api.dns_name}"
      kubernetes_cluster_dns = "${var.kubernetes_cluster_dns}"
      etcd0_ip = "${aws_instance.etcd.0.private_ip}"
      ...
      controller0_ip = "${aws_instance.controller.0.private_ip}"

nicusX

- hosts: etcd
  roles:
    - common
    - etcd

- hosts: controller
  roles:
    - common
    - controller

nicusX

[ec2]
instance_filters = tag:ansibleFilter=Kubernetes01
regions = eu-west-1
destination_variable = ip_address
vpc_destination_variable = ip_address
hostname_variable = tag_ansibleNodeName

nicusX

[tag_ansibleNodeType_etcd]
[tag_ansibleNodeType_worker]
[tag_ansibleNodeType_controller]

[etcd:children]
tag_ansibleNodeType_etcd

[worker:children]
tag_ansibleNodeType_worker