resource "google_compute_instance" "k8s-master" {
  count = 1
  name = "k8s-master-${count.index + 1}"

  ## for a setup having multiple instances of the same type, you can do
  ## the following, there would be 2 instances of the same configuration
  ## provisioned
  # count        = 2
  # name         = "${var.instance-name}-${count.index}"
  machine_type = var.vm_type["3point75gig"]

  zone = var.region

  tags = [
    "${var.network}-firewall-ssh",
    "${var.network}-firewall-icmp",
    "${var.network}-firewall-k8s-apiserver",
    "${var.network}-firewall-k8s-etcd-api",
    "${var.network}-firewall-k8s-kubelet-api",
    "${var.network}-firewall-k8s-kube-scheduler",
    "${var.network}-firewall-k8s-kube-controller",
  ]

  labels = {
    k8s-role = "master"
    first-master = "true"
  }

  boot_disk {
    auto_delete = "true"
    initialize_params {
      image = var.os["centos7"]
      type  = "pd-standard"
    }
  }

  metadata = {
    hostname       = "k8s-master.ervine.org"
    startup-script = <<SCRIPT
${file("${path.module}/scripts/get-metadata-gce.sh")}
${file("${path.module}/scripts/startup.sh")}
SCRIPT	
  }

  network_interface {
    subnetwork = google_compute_subnetwork.k8s-network_subnetwork.name

    access_config {
      // Ephemeral IP
    }
  }
}

resource "google_compute_instance" "k8s-worker" {
  count = 2
  name = "k8s-worker-${count.index + 1}"

  ## for a setup having multiple instances of the same type, you can do
  ## the following, there would be 2 instances of the same configuration
  ## provisioned
  # count        = 2
  # name         = "${var.instance-name}-${count.index}"
  machine_type = var.vm_type["1point7gig"]

  zone = var.region

  tags = [
    "${var.network}-firewall-ssh",
    "${var.network}-firewall-icmp",
    "${var.network}-firewall-http",
    "${var.network}-firewall-https",
    "${var.network}-firewall-k8s-kubelet-api",
    "${var.network}-firewall-k8s-nodeports",
  ]

  labels = {
    k8s-role = "worker"
  }

  boot_disk {
    auto_delete = "true"
    initialize_params {
      image = var.os["centos7"]
      type  = "pd-standard"
    }
  }

  metadata = {
    hostname       = "k8s-worker-${count.index + 1}"
    startup-script = <<SCRIPT
${file("${path.module}/scripts/get-metadata-gce.sh")}
${file("${path.module}/scripts/startup.sh")}
SCRIPT
  }

  network_interface {
    subnetwork = google_compute_subnetwork.k8s-network_subnetwork.name

    access_config {
      // Ephemeral IP
    }
  }
}