flatcar-linux.json

{
    "variables": {
        "flatcar_channel": "alpha",
        "flatcar_version": "current",
        "iso_checksum": "",
        "iso_checksum_type": "none",
        "disk_size": "40000",
        "memory": "2048M",
        "boot_wait": "45s",
        "headless": "false"
    },

    "builders": [
        {
            "type": "qemu",
            "iso_url": "https://{{user `flatcar_channel` }}.release.flatcar-linux.net/amd64-usr/current/flatcar_production_iso_image.iso",
            "iso_checksum": "{{ user `iso_checksum` }}",
            "iso_checksum_type": "{{ user `iso_checksum_type` }}",
            "output_directory": "builds",
            "shutdown_command": "sudo shutdown now",
            "disk_size": "{{ user `disk_size` }}",
            "format": "qcow2",
            "accelerator": "kvm",
            "vm_name": "flatcar-linux-{{user `flatcar_channel` }}.qcow2",
            "boot_wait": "{{user `boot_wait` }}",
            "ssh_username": "core",
            "ssh_password": "packer",
            "headless": "{{ user `headless` }}",
            "boot_command": [
                "sudo passwd core<enter><wait>",
                "packer<enter>",
                "packer<enter>",
                "sudo systemctl start sshd.service<enter>"
            ],
            "qemuargs": [
                [ "-m", "{{user `memory` }}" ]
            ]
        }
    ],

    "provisioners": [
        {
            "type": "file",
            "source": "ignition.json",
            "destination": "/tmp/ignition.json"
        },
        {
            "type": "shell",
            "inline": [
                "sudo flatcar-install -d /dev/vda -C {{ user `flatcar_channel` }} -i /tmp/ignition.json"
            ]
        }
    ],

    "post-processors": [
        {
            "type": "vagrant",
            "keep_input_artifact": true,
            "output": "builds/flatcar-{{user `flatcar_channel`}}-{{user `flatcar_version`}}-{{.Provider}}.box",
            "vagrantfile_template": "Vagrantfile.template"
        }
    ]
}