feat: add packer automation for building KubeVirt VM image

packer/qemu/Dockerfile

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+FROM scratch
+ADD build/base-uefi-jammy /disk/base-uefi-jammy.qcow2

packer/qemu/Makefile

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+build-vm:
+	rm -rf build/
+	PACKER_LOG=1 packer build qemu-qcow2.pkr.hcl

packer/qemu/qemu-qcow2.pkr.hcl

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+packer {
+  required_version = ">= 1.7.0, < 2.0.0"
+
+  required_plugins {
+    qemu = {
+      source  = "github.com/hashicorp/qemu"
+      version = ">= 1.0.0, < 2.0.0"
+    }
+    sshkey = {
+      version = ">= 1.0.1"
+      source = "github.com/ivoronin/sshkey"
+    }
+  }
+}
+
+variable "cli_version" {
+  type = string
+  default = "v0.7.0"
+}
+
+locals {
+  cli_version_clean = trim(var.cli_version, "v")
+}
+
+variable "boot_wait" {
+  type    = string
+  default = "6s"
+}
+
+variable "communicator" {
+  type    = string
+  default = "ssh"
+}
+
+variable "country" {
+  type    = string
+  default = "CA"
+}
+
+variable "cpus" {
+  type    = string
+  default = "1"
+}
+
+variable "disk_size" {
+  type    = string
+  default = "7500"
+}
+
+variable "headless" {
+  type    = bool
+  default = false
+}
+
+variable "host_port_max" {
+  type    = string
+  default = "4444"
+}
+
+variable "host_port_min" {
+  type    = string
+  default = "2222"
+}
+
+variable "http_port_max" {
+  type    = string
+  default = "9000"
+}
+
+variable "http_port_min" {
+  type    = string
+  default = "8000"
+}
+
+variable "iso_checksum" {
+  type    = string
+  default = "sha256:e099488c0d37a800be12e5df86a37ad29b74942330130374e71c8d734a20ca32"
+}
+
+variable "iso_file" {
+  type    = string
+  default = "jammy-server-cloudimg-amd64.img"
+}
+
+variable "iso_path_external" {
+  type    = string
+  default = "https://cloud-images.ubuntu.com/jammy/current"
+}
+
+variable "memory" {
+  type    = string
+  default = "1024"
+}
+
+variable "packer_cache_dir" {
+  type    = string
+  default = "${env("PACKER_CACHE_DIR")}"
+}
+
+variable "qemu_binary" {
+  type    = string
+  default = "qemu-system-x86_64"
+#   default = "qemu-system-aarch64" # arm64
+}
+
+variable "shutdown_timeout" {
+  type    = string
+  default = "10m"
+}
+
+variable "ssh_agent_auth" {
+  type    = bool
+  default = false
+}
+
+variable "ssh_clear_authorized_keys" {
+  type    = bool
+  default = true
+}
+
+variable "ssh_disable_agent_forwarding" {
+  type    = bool
+  default = false
+}
+
+variable "ssh_file_transfer_method" {
+  type    = string
+  default = "scp"
+}
+
+variable "ssh_handshake_attempts" {
+  type    = string
+  default = "100"
+}
+
+variable "ssh_keep_alive_interval" {
+  type    = string
+  default = "5s"
+}
+
+data "sshkey" "install" {
+}
+
+variable "ssh_port" {
+  type    = string
+  default = "22"
+}
+
+variable "ssh_pty" {
+  type    = bool
+  default = true
+}
+
+variable "ssh_timeout" {
+  type    = string
+  default = "60m"
+}
+
+variable "ssh_username" {
+  type    = string
+  default = "ubuntu"
+}
+
+variable "start_retry_timeout" {
+  type    = string
+  default = "5m"
+}
+
+variable "vm_name" {
+  type    = string
+  default = "base-uefi-jammy"
+}
+
+variable "vnc_vrdp_bind_address" {
+  type    = string
+  default = "127.0.0.1"
+}
+
+variable "vnc_vrdp_port_max" {
+  type    = string
+  default = "6000"
+}
+
+variable "vnc_vrdp_port_min" {
+  type    = string
+  default = "5900"
+}
+
+locals {
+  output_directory = "build"
+}
+
+source "qemu" "qemu" {
+  boot_command         = []
+  boot_wait            = var.boot_wait
+  communicator         = var.communicator
+  cpus                 = var.cpus
+  disk_cache           = "writeback"
+  disk_compression     = false
+  disk_discard         = "ignore"
+  disk_image           = true
+  display              = "none"
+  disk_interface       = "virtio-scsi"
+  disk_size            = var.disk_size
+  format               = "qcow2"
+  headless             = var.headless
+  host_port_max        = var.host_port_max
+  host_port_min        = var.host_port_min
+  http_port_max        = var.http_port_max
+  http_port_min        = var.http_port_min
+  iso_checksum         = var.iso_checksum
+  iso_skip_cache       = false
+  iso_target_path      = "${regex_replace(var.packer_cache_dir, "^$", "/tmp")}/${var.iso_file}"
+  iso_urls = [
+    "${var.iso_path_external}/${var.iso_file}"
+  ]
+  machine_type     = "q35"
+  memory           = var.memory
+  net_device       = "virtio-net"
+  output_directory = local.output_directory
+  qemu_binary      = var.qemu_binary
+  cd_files = [
+    "meta-data"
+  ]
+  cd_content = {
+    "user-data" = templatefile("user-data", { ssh_public_key = data.sshkey.install.public_key })
+  }
+  cd_label = "cidata"
+  shutdown_command             = "sudo shutdown -h now"
+  shutdown_timeout             = var.shutdown_timeout
+  skip_compaction              = true
+  skip_nat_mapping             = false
+  ssh_agent_auth               = var.ssh_agent_auth
+  ssh_clear_authorized_keys    = var.ssh_clear_authorized_keys
+  ssh_disable_agent_forwarding = var.ssh_disable_agent_forwarding
+  ssh_file_transfer_method     = var.ssh_file_transfer_method
+  ssh_handshake_attempts       = var.ssh_handshake_attempts
+  ssh_keep_alive_interval      = var.ssh_keep_alive_interval
+  ssh_private_key_file         = data.sshkey.install.private_key_path
+  ssh_port                     = var.ssh_port
+  ssh_pty                      = var.ssh_pty
+  ssh_timeout                  = var.ssh_timeout
+  ssh_username                 = var.ssh_username
+  use_default_display          = true
+  vm_name                      = var.vm_name
+  vnc_bind_address             = var.vnc_vrdp_bind_address
+  vnc_port_max                 = var.vnc_vrdp_port_max
+  vnc_port_min                 = var.vnc_vrdp_port_min
+}
+
+build {
+  description = "Ubuntu based VM image for KubeVirt"
+
+  sources = ["source.qemu.qemu"]
+
+  provisioner "shell" {
+    inline = [
+
+      # setup qemu-guest-agent
+      "sudo apt-get update -yq",
+      "sudo apt-get install -yq qemu-guest-agent ca-certificates curl gnupg",
+      # "sudo systemctl start qemu-guest-agent",
+      "sudo systemctl enable qemu-guest-agent",
+
+      # install docker
+      "sudo install -m 0755 -d /etc/apt/keyrings",
+      "curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg",
+      "sudo chmod a+r /etc/apt/keyrings/docker.gpg",
+      "echo \"deb [arch=\"$(dpkg --print-architecture)\" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \"$(. /etc/os-release && echo \"$VERSION_CODENAME\")\" stable\" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null",
+      "sudo apt-get update",
+      "VERSION_STRING=5:24.0.0-1~ubuntu.22.04~jammy",
+      "sudo apt-get install -yq docker-ce=$VERSION_STRING docker-ce-cli=$VERSION_STRING containerd.io docker-buildx-plugin docker-compose-plugin systemd-container",
+
+
+
+      # add plural group and user
+      "sudo groupadd -g 1001 plural",
+      "sudo useradd -ms /bin/bash -u 1001 -g plural plural",
+      "sudo loginctl enable-linger plural",
+
+      # setup for rootless docker
+      "sudo apt-get -yq install uidmap dbus-user-session",
+      "sudo machinectl shell plural@ /usr/bin/dockerd-rootless-setuptool.sh install",
+      "sudo machinectl shell plural@ /usr/bin/systemctl --user start docker",
+      "sudo machinectl shell plural@ /usr/bin/systemctl --user enable docker",
+
+    ]
+    inline_shebang = "/usr/bin/env bash"
+    start_retry_timeout = var.start_retry_timeout
+  }
+
+  provisioner "shell" {
+    inline = [
+      "curl -L https://github.com/pluralsh/plural-cli/releases/download/${var.cli_version}/plural-cli_console_${local.cli_version_clean}_Linux_amd64.tar.gz | tar xvz plural",
+      "chmod +x plural",
+      "sudo mv plural /usr/local/bin/plural",
+    ]
+    inline_shebang = "/usr/bin/env bash"
+    start_retry_timeout = var.start_retry_timeout
+  }
+
+  post-processors {
+    post-processor "shell-local" {
+      inline = [
+        "docker build --platform linux/amd64 --push -f \"Dockerfile\" -t davidspek/plural-cli-kubevirt:0.1.13 .",
+      ]
+    }
+  }
+}

packer/qemu/user-data

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+#cloud-config
+ssh_authorized_keys:
+  - ${ssh_public_key}