Packer: Qemu builder : Post-processor failed: Unknown artifact type, can't build box

[loic-roux-404]

How i can use post processor of type "vagrant" with qemu artifacts, they seem not supported by my packer configuration.

During packer build after qemu builder i use some post-processors to create ovf from a vdmk. with this tool

Option keep artifact" : true seem to doesn't work and during qemu builder the expected qcow2 file doesn't appear in my build directory (just a file without extension "buster" is created)

• I'm on mac OS X Catalina 10.15.4
• I'm trying to build a debian buster 10.0.3.
• vagrant post processor work with virtualbox-ovf
• packer 1.5.4

Thanks for your help.

Command:
packer build -parallel=false -force config.json
The error :

 ==> qemu: Running post-processor: {{.Provider}}.box (type vagrant) 
Build 'qemu' errored: 1 error(s) occurred: 
* Post-processor failed: Unknown artifact type, can't build box: 
Some builds didn't complete successfully and had errors: Mar 25 17:01:45 --> qemu: 1 error(s) occurred: 
* Post-processor failed: Unknown artifact type, can't build box: 
==> Builds finished but no artifacts were created. 

My config.json

{
  "builders": [{
      "boot_command": [
        "<esc><wait>",
        "install <wait>",
        "preseed/url=http://{{ .HTTPIP }}:{{ .HTTPPort }}/buster-preseed.cfg <wait>",
        "auto <wait>",
        "locale=en_US.UTF-8 <wait>",
        "netcfg/get_hostname={{ .Name }} <wait>",
        "netcfg/get_domain=vagrantup.com <wait>",
        "debconf/frontend=noninteractive <wait>",
        "console-setup/ask_detect=false <wait>",
        "kbd-chooser/method=us <wait>",
        "console-keymaps-at/keymap=us <wait>",
        "keyboard-configuration/xkb-keymap=us <wait>",
        "net.ifnames=0 <wait>",
        "<enter><wait>"
      ],
      "disk_size": "20280",
      "disk_interface": "virtio",
      "headless": true,
      "http_directory": "http",
      "iso_checksum": "{{user `iso_checksum`}}",
      "iso_checksum_type": "sha256",
      "iso_url": "https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-10.3.0-amd64-netinst.iso",
      "type": "qemu",
      "format": "qcow2",
      "accelerator": "hvf",
      "qemuargs": [
        ["-m", "1024M"],
        ["-smp", "2"]
      ],
      "ssh_password": "vagrant",
      "ssh_username": "vagrant",
      "ssh_port": 22,
      "ssh_wait_timeout": "10000s",
      "shutdown_command": "echo 'vagrant' | sudo /sbin/halt -p",
      "output_directory": "{{user `output_dir`}}",
      "vm_name": "{{user `vm_name`}}"
    },
    {
      "boot_command": [
        "<up><wait><tab> text ks=http://{{ .HTTPIP }}:{{ .HTTPPort }}/ks.cfg PACKER_USER=vagrant PACKER_AUTHORIZED_KEY={{ .SSHPublicKey | urlquery }}<enter>"
      ],
      "headless": true,
      "checksum": "{{user `iso_checksum`}}",
      "checksum_type": "sha256",
      "type": "virtualbox-ovf",
      "format": "ovf",
      "source_path": "{{user `vm_name`}}.ovf",
      "guest_additions_mode": "disable",
      "virtualbox_version_file": "",
      "communicator": "none",
      "output_directory": "{{user `output_dir`}}",
      "shutdown_command": "",
      "shutdown_timeout": "1s",
      "vm_name": "{{user `vm_name`}}"
    }
  ],
  "provisioners": [{
      "type": "file",
      "source": "res",
      "destination": "/tmp/res",
      "only": ["qemu"]
    },
    {
      "type": "shell",
      "pause_before": "5s",
      "execute_command": "echo 'vagrant'| {{.Vars}} sudo --preserve-env --stdin sh '{{.Path}}'",
      "environment_vars": [
        "VAGRANT_BUILDER_FS=/"
      ],
      "scripts": [
        "../helpers/vagrant-setup",
        "scripts/vagrant.sh",
        "scripts/temp_install.sh",
        "scripts/networking.sh",
        "scripts/cleanup.sh",
        "scripts/minimize.sh"
      ],
      "only": ["qemu"]
    }
  ],
  "post-processors": [
    [{
        "type": "shell-local",
        "environment_vars": [
          "VM_NAME={{user `vm_name`}}",
          "OUTPUT={{user `output_dir`}}"
        ],
        "script": "scripts/to-ovf-init.sh",
        "keep_input_artifact": true,
        "only": ["qemu"]
      },
      {
        "type": "shell-local",
        "environment_vars": [
          "VM_NAME={{user `vm_name`}}",
          "OUTPUT={{user `output_dir`}}",
          "WORK_PATH=./"
        ],
        "script": "scripts/to-ovf-linux.sh",
        "only_on": "linux",
        "keep_input_artifact": true,
        "only": ["qemu"]
      },
      {
        "type": "shell-local",
        "environment_vars": [
          "VM_NAME={{user `vm_name`}}",
          "OUTPUT={{user `output_dir`}}"
        ],
        "script": "scripts/to-ovf-darwin.sh",
        "only_on": "darwin",
        "keep_input_artifact": true,
        "only": ["qemu"]
      },
      {
        "name": "{{.Provider}}.box",
        "output": "{{user `vm_name`}}.exports/{{.Provider}}.{{user `vm_name`}}.box",
        "type": "vagrant",
        "keep_input_artifact": true
      },
      {
        "type": "vagrant-cloud",
        "box_tag": "loic-roux-404/deb64-buster",
        "access_token": "{{user `cloud_token`}}",
        "version": "{{user `box_version`}}",
        "keep_input_artifact": true
      }
    ]
  ], {variables...}}

[SwampDragons]

Hi, thanks for reaching out!

This should definitely work, and it's not immediately clear to me why it doesn't. Can you please set the environment var PACKER_LOG=1, and run the build again using the --only=qemu command line flag so that the logs don't get clutterd by the virtualbox one, and then paste the full output of the build into a gist for me? that should help me track what's going on with the artifact.

I also have two hopefully-helpful template notes, though I don't think either of these will solve your problem.

1) The shell-local post-processor automatically keeps the input artifact so you don't need to set keep_input_artifact=true.

2) Using {{.Provider}} inside the "name" field won't work because the name gets assigned before .Provider is interpolated by the post-processor. The ".Provider" engine will only work inside the "output" option in the post-processors.

[loic-roux-404]

Figured with packer new version, don't really know why, i'm going to reopen and publish a gist if i met this issue.

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