terraform-hcloud-kube-hetzner/master.tf

resource "hcloud_server" "first_control_plane" {
  name = local.name_master

  image        = data.hcloud_image.linux.name
  rescue       = "linux64"
  server_type  = var.control_plane_server_type
  location     = var.location
  ssh_keys     = [hcloud_ssh_key.default.id]
  firewall_ids = [hcloud_firewall.k3s.id]

  labels = {
    "provisioner" = "terraform",
    "engine"      = "k3s"
  }

  provisioner "file" {
    content     = data.template_file.master.rendered
    destination = "/tmp/config.yaml"

    connection {
      user        = "root"
      private_key = file(var.private_key)
      host        = self.ipv4_address
    }
  }


  provisioner "remote-exec" {
    inline = [
      "apt install -y grub-efi grub-pc-bin mtools xorriso",
      "latest=$(curl -s https://api.github.com/repos/rancher/k3os/releases | jq '.[0].tag_name')",
      "curl -Lo ./install.sh https://raw.githubusercontent.com/rancher/k3os/$(echo $latest | xargs)/install.sh",
      "chmod +x ./install.sh",
      "./install.sh --config /tmp/config.yaml /dev/sda https://github.com/rancher/k3os/releases/download/$(echo $latest | xargs)/k3os-amd64.iso",
      "shutdown -r now"
    ]

    connection {
      user        = "root"
      private_key = file(var.private_key)
      host        = self.ipv4_address
    }
  }

  provisioner "local-exec" {
    command = <<-EOT
      ping ${self.ipv4_address} | grep --line-buffered "bytes from" | head -1 && sleep 60 && scp -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ${var.private_key} rancher@${self.ipv4_address}:/etc/rancher/k3s/k3s.yaml ${path.module}/kubeconfig.yaml
      sed -i -e 's/127.0.0.1/${self.ipv4_address}/g' ${path.module}/kubeconfig.yaml
    EOT
  }

  provisioner "local-exec" {
    command = <<-EOT
      kubectl -n kube-system create secret generic hcloud --from-literal=token=${random_password.k3s_token.result} --from-literal=network=${hcloud_network.k3s.name} --kubeconfig ${path.module}/kubeconfig.yaml
      kubectl apply -f ${path.module}/manifests/hcloud-ccm-net.yaml --kubeconfig ${path.module}/kubeconfig.yaml
      kubectl -n kube-system create secret generic hcloud-csi --from-literal=token=${random_password.k3s_token.result} --kubeconfig ${path.module}/kubeconfig.yaml
      kubectl apply -f https://raw.githubusercontent.com/hetznercloud/csi-driver/master/deploy/kubernetes/hcloud-csi.yml --kubeconfig ${path.module}/kubeconfig.yaml
    EOT
  }

  network {
    network_id = hcloud_network.k3s.id
    ip         = local.first_control_plane_network_ip
  }

  depends_on = [
    hcloud_network_subnet.k3s,
    hcloud_firewall.k3s
  ]
}