vms/recipes/alpine/kubernetes.pkr.hcl

#Flavour kubernetes
build {
  name = "kubernetes"
  description = <<EOF
This builder builds a QEMU image from the base build output. The goal here is to install ${local.Kubernetes.Name}
with it's provisionning.
EOF

  source "source.qemu.alpine" {
    output_directory = "${var.output_dir}/${var.version}/provisionned/${local.Kubernetes.Name}"
    vm_name          = "${local.output_name}-${var.version}-${local.Kubernetes.Name}.img"
    iso_url          = "${var.output_dir}/${var.version}/base/${local.output_name}-${var.version}.img"
    iso_checksum     = "none"
    disk_size        = 20480
    disk_image       = true
    boot_command     = [ "<enter><enter><wait>" ]
    ssh_clear_authorized_keys = true
  }

  // Install templater and bootstraper
  provisioner "shell" {
    script = "${local.locations.provisionning}/templater-install.sh"
  }

  // Copy configuration values on the image
  provisioner "shell" {
    inline = [
      "sh -cx 'mkdir -p ${local.builder_config.TemplateDir}'",
      "sh -cx 'mkdir -p ${local.builder_config.ValueDir}'"
    ]
  }

  // Copy configuration templates to the image
  provisioner "file" {
    destination = "${local.builder_config.TemplateDir}/"
    source = "${local.locations.templates}/conf/${build.name}/"
  }

  // Copy configuration values on the image
  provisioner "file" {
    destination = "${local.builder_config.ValueDir}/${build.name}.json"
    content = "${jsonencode(local.Kubernetes)}"
  }

  // Copy Sharemetrics script
  provisioner "file" {
    destination = "/etc/local.d/sharemetrics.start"
    source = "${local.locations.provisionning}/conf/${build.name}/sharemetrics.start"
  }

  provisioner "file" {
    destination = "/etc/local.d/initkubernetes.start"
    source = "${local.locations.provisionning}/conf/${build.name}/initkubernetes.start"
  }

  provisioner "shell" {
    inline = [
      "chmod +x /etc/local.d/sharemetrics.start",
      "chmod +x /etc/local.d/initkubernetes.start"
     ]
  }

  // Generate default configuration for kubernetes
  provisioner "shell" {
    max_retries = 3
    inline = [ "sh -cx '/usr/local/bin/btr -c ${local.builder_config.ValueDir}/ -t ${local.builder_config.TemplateDir}'" ]
  }

  // Complete kubernetes install
  provisioner "shell" {
    expect_disconnect = true
    max_retries = 6
    script = "${local.locations.provisionning}/${build.name}.sh"
  }

  // Install OpenNebula context tool
  provisioner "shell" {
    script = "${local.locations.provisionning}/one-context.sh"
  }

  // Deploy the opennebula context script to manage configuration
  provisioner "file" {
    destination = "/etc/one-context.d/net-96-templater"
    source = "${local.locations.provisionning}/conf/one-context/net-96-templater"
  }

  provisioner "shell" {
    inline = [
      "chmod +x /etc/one-context.d/net-96-templater"
    ]
  }

  provisioner "shell" {
    inline =  [
      "service docker start",
      "service containerd start",
      "sleep 5",
      "kubeadm config images pull" ]
  }

  post-processor "shell-local" {
    inline = [
      "/bin/sh ${path.cwd}/post-processors/sparsify.sh ${var.output_dir}/${var.version}/provisionned/${local.Kubernetes.Name} ${var.image_version}",
      "ruby ${local.locations.tools}/one-templates -t image -m 640 -T ${local.locations.templates}/one/image/common.tpl -n ${local.output_name}-${var.version}-${local.Kubernetes.Name} -c '${local.Kubernetes.Name} base image' --image-file ${var.output_dir}/${var.version}/provisionned/${local.Kubernetes.Name}/${local.output_name}-${var.version}-${local.Kubernetes.Name}.img",
      "ruby ${local.locations.tools}/one-templates -t vm    -m 640 -T ${local.locations.templates}/one/vm/kubeleader.xml -n ${local.output_name}-${var.version}-${local.Kubernetes.Name}Leader --image-name ${local.output_name}-${var.version}-${local.Kubernetes.Name}",
      "ruby ${local.locations.tools}/one-templates -t vm    -m 640 -T ${local.locations.templates}/one/vm/kubemaster.xml -n ${local.output_name}-${var.version}-${local.Kubernetes.Name}Master --image-name ${local.output_name}-${var.version}-${local.Kubernetes.Name}",
      "ruby ${local.locations.tools}/one-templates -t vm    -m 640 -T ${local.locations.templates}/one/vm/kubeworker.xml -n ${local.output_name}-${var.version}-${local.Kubernetes.Name}Worker --image-name ${local.output_name}-${var.version}-${local.Kubernetes.Name}",
      "ruby ${local.locations.tools}/one-templates -t service -m 640 -T ${local.locations.templates}/one/service/${build.name}-cluster.json -n ${build.name}-cluster-${local.output_name}-${var.version} --vm-name ${local.output_name}-${var.version}-${local.Kubernetes.Name}",
    ]
  }

}