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Proxmox

@hashicorp

The Proxmox Packer builder is able to create Proxmox virtual machines and store them as new Proxmox Virtual Machine images.

  • Community

Updated 2 years ago

Proxmox Clone

Type: proxmox-clone Artifact BuilderId: proxmox.clone

The proxmox-clone Packer builder is able to create new images for use with Proxmox. The builder takes a virtual machine template, runs any provisioning necessary on the image after launching it, then creates a virtual machine template. This template can then be used as to create new virtual machines within Proxmox.

Disks specified in a proxmox-clone builder configuration will replace disks that are already present on the cloned VM template. If you want to reuse the disks of the cloned VM, don't specify disks in your configuration.

The builder does not manage templates. Once it creates a template, it is up to you to use it or delete it.

Configuration Reference

There are many configuration options available for the builder. They are segmented below into two categories: required and optional parameters. Within each category, the available configuration keys are alphabetized.

You may also want to take look at the general configuration references for VirtIO RNG device and PCI Devices configuration references, which can be found further down the page.

In addition to the options listed here, a communicator can be configured for this builder.

If no communicator is defined, an SSH key is generated for use, and is used in the image's Cloud-Init settings for provisioning.

Required:

  • clone_vm (string) - The name of the VM Packer should clone and build from. Either clone_vm or clone_vm_id must be specifed.

  • clone_vm_id (int) - The ID of the VM Packer should clone and build from. Proxmox VMIDs are limited to the range 100-999999999. Either clone_vm or clone_vm_id must be specifed.

An iso (CD) containing custom files can be made available for your build.

By default, no extra CD will be attached. All files listed in this setting get placed into the root directory of the CD and the CD is attached as the second CD device.

This config exists to work around modern operating systems that have no way to mount floppy disks, which was our previous go-to for adding files at boot time.

  • cd_files ([]string) - A list of files to place onto a CD that is attached when the VM is booted. This can include either files or directories; any directories will be copied onto the CD recursively, preserving directory structure hierarchy. Symlinks will have the link's target copied into the directory tree on the CD where the symlink was. File globbing is allowed.

    Usage example (JSON):

    "cd_files": ["./somedirectory/meta-data", "./somedirectory/user-data"],
"cd_label": "cidata",

    Usage example (HCL):

    cd_files = ["./somedirectory/meta-data", "./somedirectory/user-data"]
cd_label = "cidata"

    The above will create a CD with two files, user-data and meta-data in the CD root. This specific example is how you would create a CD that can be used for an Ubuntu 20.04 autoinstall.

    Since globbing is also supported,

    cd_files = ["./somedirectory/*"]
cd_label = "cidata"

    Would also be an acceptable way to define the above cd. The difference between providing the directory with or without the glob is whether the directory itself or its contents will be at the CD root.

    Use of this option assumes that you have a command line tool installed that can handle the iso creation. Packer will use one of the following tools:

    • xorriso
    • mkisofs
    • hdiutil (normally found in macOS)
    • oscdimg (normally found in Windows as part of the Windows ADK)

  • cd_content (map[string]string) - Key/Values to add to the CD. The keys represent the paths, and the values contents. It can be used alongside cd_files, which is useful to add large files without loading them into memory. If any paths are specified by both, the contents in cd_content will take precedence.

    Usage example (HCL):

    cd_files = ["vendor-data"]
cd_content = {
  "meta-data" = jsonencode(local.instance_data)
  "user-data" = templatefile("user-data", { packages = ["nginx"] })
}
cd_label = "cidata"

  • cd_label (string) - CD Label

Optional:

  • boot_key_interval (duration string | ex: "1h5m2s") - Boot Key Interval

  • proxmox_url (string) - URL to the Proxmox API, including the full path, so https://<server>:<port>/api2/json for example. Can also be set via the PROXMOX_URL environment variable.

  • insecure_skip_tls_verify (bool) - Skip validating the certificate.

  • username (string) - Username when authenticating to Proxmox, including the realm. For example user@pve to use the local Proxmox realm. When using token authentication, the username must include the token id after an exclamation mark. For example, user@pve!tokenid. Can also be set via the PROXMOX_USERNAME environment variable.

  • password (string) - Password for the user. For API tokens please use token. Can also be set via the PROXMOX_PASSWORD environment variable. Either password or token must be specifed. If both are set, token takes precedence.

  • token (string) - Token for authenticating API calls. This allows the API client to work with API tokens instead of user passwords. Can also be set via the PROXMOX_TOKEN environment variable. Either password or token must be specifed. If both are set, token takes precedence.

  • node (string) - Which node in the Proxmox cluster to start the virtual machine on during creation.

  • pool (string) - Name of resource pool to create virtual machine in.

  • task_timeout (duration string | ex: "1h5m2s") - task_timeout (duration string | ex: "10m") - The timeout for Promox API operations, e.g. clones. Defaults to 1 minute.

  • vm_name (string) - Name of the virtual machine during creation. If not given, a random uuid will be used.

  • vm_id (int) - vm_id (int) - The ID used to reference the virtual machine. This will also be the ID of the final template. Proxmox VMIDs are unique cluster-wide and are limited to the range 100-999999999. If not given, the next free ID on the cluster will be used.

  • boot (string) - Override default boot order. Format example order=virtio0;ide2;net0. Prior to Proxmox 6.2-15 the format was cdn (c:CDROM -> d:Disk -> n:Network)

  • memory (int) - How much memory (in megabytes) to give the virtual machine. If ballooning_minimum is also set, memory defines the maximum amount of memory the VM will be able to use. Defaults to 512.

  • ballooning_minimum (int) - Setting this option enables KVM memory ballooning and defines the minimum amount of memory (in megabytes) the VM will have. Defaults to 0 (memory ballooning disabled).

  • cores (int) - How many CPU cores to give the virtual machine. Defaults to 1.

  • cpu_type (string) - The CPU type to emulate. See the Proxmox API documentation for the complete list of accepted values. For best performance, set this to host. Defaults to kvm64.

  • sockets (int) - How many CPU sockets to give the virtual machine. Defaults to 1

  • numa (bool) - If true, support for non-uniform memory access (NUMA) is enabled. Defaults to false.

  • os (string) - The operating system. Can be wxp, w2k, w2k3, w2k8, wvista, win7, win8, win10, l24 (Linux 2.4), l26 (Linux 2.6+), solaris or other. Defaults to other.

  • bios (string) - Set the machine bios. This can be set to ovmf or seabios. The default value is seabios.

  • efi_config (efiConfig) - Set the efidisk storage options. See EFI Config.

  • efidisk (string) - This option is deprecated, please use efi_config instead.

  • machine (string) - Set the machine type. Supported values are 'pc' or 'q35'.

  • rng0 (rng0Config) - Configure Random Number Generator via VirtIO. See VirtIO RNG device

  • vga (vgaConfig) - The graphics adapter to use. See VGA Config.

  • network_adapters ([]NICConfig) - The graphics adapter to use. See Network Adapters

  • disks ([]diskConfig) - Disks attached to the virtual machine. See Disks

  • pci_devices ([]pciDeviceConfig) - Allows passing through a host PCI device into the VM. See PCI Devices

  • serials ([]string) - A list (max 4 elements) of serial ports attached to the virtual machine. It may pass through a host serial device /dev/ttyS0 or create unix socket on the host socket. Each element can be socket or responding to pattern /dev/.+. Example:

    [
  "socket",
  "/dev/ttyS1"
]

  • qemu_agent (boolean) - Enables QEMU Agent option for this VM. When enabled, then qemu-guest-agent must be installed on the guest. When disabled, then ssh_host should be used. Defaults to true.

  • scsi_controller (string) - The SCSI controller model to emulate. Can be lsi, lsi53c810, virtio-scsi-pci, virtio-scsi-single, megasas, or pvscsi. Defaults to lsi.

  • onboot (bool) - Specifies whether a VM will be started during system bootup. Defaults to false.

  • disable_kvm (bool) - Disables KVM hardware virtualization. Defaults to false.

  • template_name (string) - Name of the template. Defaults to the generated name used during creation.

  • template_description (string) - Description of the template, visible in the Proxmox interface.

  • cloud_init (bool) - If true, add an empty Cloud-Init CDROM drive after the virtual machine has been converted to a template. Defaults to false.

  • cloud_init_storage_pool (string) - Name of the Proxmox storage pool to store the Cloud-Init CDROM on. If not given, the storage pool of the boot device will be used.

  • additional_iso_files ([]additionalISOsConfig) - Additional ISO files attached to the virtual machine. See Additional ISO Files.

  • vm_interface (string) - Name of the network interface that Packer gets the VMs IP from. Defaults to the first non loopback interface.

  • full_clone (boolean) - Whether to run a full or shallow clone from the base clone_vm. Defaults to true.

  • nameserver (string) - Set nameserver IP address(es) via Cloud-Init. If not given, the same setting as on the host is used.

  • searchdomain (string) - Set the DNS searchdomain via Cloud-Init. If not given, the same setting as on the host is used.

  • ipconfig ([]cloudInitIpconfig) - Set IP address and gateway via Cloud-Init. See the CloudInit Ip Configuration documentation for fields.

VGA Config

  • vga (object) - The graphics adapter to use. Example:

    {
  "type": "vmware",
  "memory": 32
}

Optional:

  • type (string) - Can be cirrus, none, qxl,qxl2, qxl3, qxl4, serial0, serial1, serial2, serial3, std, virtio, vmware. Defaults to std.

  • memory (int) - How much memory to assign.

Network Adapters

  • network_adapters (array of objects) - Network adapters attached to the virtual machine. Example:

    [
  {
    "model": "virtio",
    "bridge": "vmbr0",
    "vlan_tag": "10",
    "firewall": true
  }
]

Optional:

  • model (string) - Model of the virtual network adapter. Can be rtl8139, ne2k_pci, e1000, pcnet, virtio, ne2k_isa, i82551, i82557b, i82559er, vmxnet3, e1000-82540em, e1000-82544gc or e1000-82545em. Defaults to e1000.

  • packet_queues (int) - Number of packet queues to be used on the device. Values greater than 1 indicate that the multiqueue feature is activated. For best performance, set this to the number of cores available to the virtual machine. CPU load on the host and guest systems will increase as the traffic increases, so activate this option only when the VM has to handle a great number of incoming connections, such as when the VM is operating as a router, reverse proxy or a busy HTTP server. Requires virtio network adapter. Defaults to 0.

  • mac_address (string) - Give the adapter a specific MAC address. If not set, defaults to a random MAC. If value is "repeatable", value of MAC address is deterministic based on VM ID and NIC ID.

  • mtu (int) - Set the maximum transmission unit for the adapter. Valid range: 0 - 65520. If set to 1, the MTU is inherited from the bridge the adapter is attached to. Defaults to 0 (use Proxmox default).

  • bridge (string) - Required. Which Proxmox bridge to attach the adapter to.

  • vlan_tag (string) - If the adapter should tag packets. Defaults to no tagging.

  • firewall (bool) - If the interface should be protected by the firewall. Defaults to false.

Disks

  • disks (array of objects) - Disks attached to the virtual machine. Example:

    [
  {
    "type": "scsi",
    "disk_size": "5G",
    "storage_pool": "local-lvm",
    "storage_pool_type": "lvm"
  }
]

Optional:

  • type (string) - The type of disk. Can be scsi, sata, virtio or ide. Defaults to scsi.

  • storage_pool (string) - Required. Name of the Proxmox storage pool to store the virtual machine disk on. A local-lvm pool is allocated by the installer, for example.

  • storage_pool_type (string) - This option is deprecated.

  • disk_size (string) - The size of the disk, including a unit suffix, such as 10G to indicate 10 gigabytes.

  • cache_mode (string) - How to cache operations to the disk. Can be none, writethrough, writeback, unsafe or directsync. Defaults to none.

  • format (string) - The format of the file backing the disk. Can be raw, cow, qcow, qed, qcow2, vmdk or cloop. Defaults to raw.

  • io_thread (bool) - Create one I/O thread per storage controller, rather than a single thread for all I/O. This can increase performance when multiple disks are used. Requires virtio-scsi-single controller and a scsi or virtio disk. Defaults to false.

  • discard (bool) - Relay TRIM commands to the underlying storage. Defaults to false. See the Proxmox documentation for for further information.

  • ssd (bool) - Drive will be presented to the guest as solid-state drive rather than a rotational disk.

CloudInit Ip Configuration

If you have configured more than one network interface, make sure to match the order of network_adapters and ipconfig.

Usage example (JSON):

[
  {
    "ip": "192.168.1.55/24",
    "gateway": "192.168.1.1",
    "ip6": "fda8:a260:6eda:20::4da/128",
    "gateway6": "fda8:a260:6eda:20::1"
  }
]

  • ip (string) - Either an IPv4 address (CIDR notation) or dhcp.

  • gateway (string) - IPv4 gateway.

  • ip6 (string) - Can be an IPv6 address (CIDR notation), auto (enables SLAAC), or dhcp.

  • gateway6 (string) - IPv6 gateway.

Additional ISO Files

  • additional_iso_files (array of objects) - Additional ISO files attached to the virtual machine. Example:

    [
  {
    "device": "scsi5",
    "iso_file": "local:iso/virtio-win-0.1.185.iso",
    "unmount": true,
    "iso_checksum": "af2b3cc9fa7905dea5e58d31508d75bba717c2b0d5553962658a47aebc9cc386"
  }
]

By default, Packer will symlink, download or copy image files to the Packer cache into a "hash($iso_url+$iso_checksum).$iso_target_extension" file. Packer uses hashicorp/go-getter in file mode in order to perform a download.

go-getter supports the following protocols:

  • Local files
  • Git
  • Mercurial
  • HTTP
  • Amazon S3

Examples: go-getter can guess the checksum type based on iso_checksum length, and it is also possible to specify the checksum type.

In JSON:


    "iso_checksum": "946a6077af6f5f95a51f82fdc44051c7aa19f9cfc5f737954845a6050543d7c2",
    "iso_url": "ubuntu.org/.../ubuntu-14.04.1-server-amd64.iso"



    "iso_checksum": "file:ubuntu.org/..../ubuntu-14.04.1-server-amd64.iso.sum",
    "iso_url": "ubuntu.org/.../ubuntu-14.04.1-server-amd64.iso"



    "iso_checksum": "file://./shasums.txt",
    "iso_url": "ubuntu.org/.../ubuntu-14.04.1-server-amd64.iso"



    "iso_checksum": "file:./shasums.txt",
    "iso_url": "ubuntu.org/.../ubuntu-14.04.1-server-amd64.iso"

In HCL2:


    iso_checksum = "946a6077af6f5f95a51f82fdc44051c7aa19f9cfc5f737954845a6050543d7c2"
    iso_url = "ubuntu.org/.../ubuntu-14.04.1-server-amd64.iso"



    iso_checksum = "file:ubuntu.org/..../ubuntu-14.04.1-server-amd64.iso.sum"
    iso_url = "ubuntu.org/.../ubuntu-14.04.1-server-amd64.iso"



    iso_checksum = "file://./shasums.txt"
    iso_url = "ubuntu.org/.../ubuntu-14.04.1-server-amd64.iso"



    iso_checksum = "file:./shasums.txt",
    iso_url = "ubuntu.org/.../ubuntu-14.04.1-server-amd64.iso"

Required

  • iso_checksum (string) - The checksum for the ISO file or virtual hard drive file. The type of the checksum is specified within the checksum field as a prefix, ex: "md5:{$checksum}". The type of the checksum can also be omitted and Packer will try to infer it based on string length. Valid values are "none", "{$checksum}", "md5:{$checksum}", "sha1:{$checksum}", "sha256:{$checksum}", "sha512:{$checksum}" or "file:{$path}". Here is a list of valid checksum values:

    • md5:090992ba9fd140077b0661cb75f7ce13
    • 090992ba9fd140077b0661cb75f7ce13
    • sha1:ebfb681885ddf1234c18094a45bbeafd91467911
    • ebfb681885ddf1234c18094a45bbeafd91467911
    • sha256:ed363350696a726b7932db864dda019bd2017365c9e299627830f06954643f93
    • ed363350696a726b7932db864dda019bd2017365c9e299627830f06954643f93
    • file:http://releases.ubuntu.com/20.04/SHA256SUMS
    • file:file://./local/path/file.sum
    • file:./local/path/file.sum
    • none Although the checksum will not be verified when it is set to "none", this is not recommended since these files can be very large and corruption does happen from time to time.

  • iso_url (string) - A URL to the ISO containing the installation image or virtual hard drive (VHD or VHDX) file to clone.

Optional

  • iso_urls ([]string) - Multiple URLs for the ISO to download. Packer will try these in order. If anything goes wrong attempting to download or while downloading a single URL, it will move on to the next. All URLs must point to the same file (same checksum). By default this is empty and iso_url is used. Only one of iso_url or iso_urls can be specified.

  • iso_target_path (string) - The path where the iso should be saved after download. By default will go in the packer cache, with a hash of the original filename and checksum as its name.

  • iso_target_extension (string) - The extension of the iso file after download. This defaults to iso.

  • device (string) - Bus type and bus index that the ISO will be mounted on. Can be ideX, sataX or scsiX. For ide the bus index ranges from 0 to 3, for sata from 0 to 5 and for scsi from 0 to 30. Defaults to ide3 since ide2 is generally the boot drive.

  • iso_file (string) - Path to the ISO file to boot from, expressed as a proxmox datastore path, for example local:iso/Fedora-Server-dvd-x86_64-29-1.2.iso. Either iso_file OR iso_url must be specifed.

  • iso_storage_pool (string) - Proxmox storage pool onto which to upload the ISO file.

  • unmount (bool) - If true, remove the mounted ISO from the template after finishing. Defaults to false.

An iso (CD) containing custom files can be made available for your build.

By default, no extra CD will be attached. All files listed in this setting get placed into the root directory of the CD and the CD is attached as the second CD device.

This config exists to work around modern operating systems that have no way to mount floppy disks, which was our previous go-to for adding files at boot time.

  • cd_files ([]string) - A list of files to place onto a CD that is attached when the VM is booted. This can include either files or directories; any directories will be copied onto the CD recursively, preserving directory structure hierarchy. Symlinks will have the link's target copied into the directory tree on the CD where the symlink was. File globbing is allowed.

    Usage example (JSON):

    "cd_files": ["./somedirectory/meta-data", "./somedirectory/user-data"],
"cd_label": "cidata",

    Usage example (HCL):

    cd_files = ["./somedirectory/meta-data", "./somedirectory/user-data"]
cd_label = "cidata"

    The above will create a CD with two files, user-data and meta-data in the CD root. This specific example is how you would create a CD that can be used for an Ubuntu 20.04 autoinstall.

    Since globbing is also supported,

    cd_files = ["./somedirectory/*"]
cd_label = "cidata"

    Would also be an acceptable way to define the above cd. The difference between providing the directory with or without the glob is whether the directory itself or its contents will be at the CD root.

    Use of this option assumes that you have a command line tool installed that can handle the iso creation. Packer will use one of the following tools:

    • xorriso
    • mkisofs
    • hdiutil (normally found in macOS)
    • oscdimg (normally found in Windows as part of the Windows ADK)

  • cd_content (map[string]string) - Key/Values to add to the CD. The keys represent the paths, and the values contents. It can be used alongside cd_files, which is useful to add large files without loading them into memory. If any paths are specified by both, the contents in cd_content will take precedence.

    Usage example (HCL):

    cd_files = ["vendor-data"]
cd_content = {
  "meta-data" = jsonencode(local.instance_data)
  "user-data" = templatefile("user-data", { packages = ["nginx"] })
}
cd_label = "cidata"

  • cd_label (string) - CD Label

EFI Config

  • efi_config - (object) - Set the efidisk storage options. This needs to be set if you use ovmf uefi boot (supersedes the efidisk option).

    Usage example (JSON):

    {
  "efi_storage_pool": "local",
  "pre_enrolled_keys": true,
  "efi_type": "4m"
}

Optional:

  • efi_storage_pool (string) - Name of the Proxmox storage pool to store the EFI disk on.

  • pre_enrolled_keys (bool) - Whether Microsoft Standard Secure Boot keys should be pre-loaded on the EFI disk. Defaults to false.

  • efi_type (string) - Specifies the version of the OVMF firmware to be used. Can be 2m or 4m. Defaults to 4m.

VirtIO RNG device

  • rng0 (object): Configure Random Number Generator via VirtIO. A virtual hardware-RNG can be used to provide entropy from the host system to a guest VM helping avoid entropy starvation which might cause the guest system slow down. The device is sourced from a host device and guest, his use can be limited: max_bytes bytes of data will become available on a period ms timer. PVE documentation recommends to always use a limiter to avoid guests using too many host resources.

HCL2 example:


    rng0 {
      source    = "/dev/urandom"
      max_bytes = 1024
      period    = 1000
    }

JSON example:


    {
        "rng0": {
            "source": "/dev/urandom",
            "max_bytes": 1024,
            "period": 1000
        }
    }

Required:

  • source (string) - Device on the host to gather entropy from. /dev/urandom should be preferred over /dev/random as Proxmox PVE documentation suggests. /dev/hwrng can be used to pass through a hardware RNG. Can be one of /dev/urandom, /dev/random, /dev/hwrng.

  • max_bytes (int) - Maximum bytes of entropy allowed to get injected into the guest every period milliseconds. Use a lower value when using /dev/random since can lead to entropy starvation on the host system. 0 disables limiting and according to PVE documentation is potentially dangerous for the host. Recommended value: 1024.

Optional:

  • period (int) - Period in milliseconds on which the the entropy-injection quota is reset. Can be a positive value. Recommended value: 1000.

PCI devices

Allows passing through a host PCI device into the VM. For example, a graphics card or a network adapter. Devices that are mapped into a guest VM are no longer available on the host. A minimal configuration only requires either the host or the mapping key to be specifed.

Note: VMs with passed-through devices cannot be migrated.

HCL2 example:


    pci_devices {
      host          = "0000:0d:00.1"
      pcie          = false
      device_id     = "1003"
      legacy_igd    = false
      mdev          = "some-model"
      hide_rombar   = false
      romfile       = "vbios.bin"
      sub_device_id = ""
      sub_vendor_id = ""
      vendor_id     = "15B3"
      x_vga         = false
    }

JSON example:


    {
      "pci_devices": {
        "host"          : "0000:0d:00.1",
        "pcie"          : false,
        "device_id"     : "1003",
        "legacy_igd"    : false,
        "mdev"          : "some-model",
        "hide_rombar"   : false,
        "romfile"       : "vbios.bin",
        "sub_device_id" : "",
        "sub_vendor_id" : "",
        "vendor_id"     : "15B3",
        "x_vga"         : false
      }
    }

Optional:

  • host (string) - The PCI ID of a host’s PCI device or a PCI virtual function. You can us the lspci command to list existing PCI devices. Either this or the mapping key must be set.

  • device_id (string) - Override PCI device ID visible to guest.

  • legacy_igd (bool) - Pass this device in legacy IGD mode, making it the primary and exclusive graphics device in the VM. Requires pc-i440fx machine type and VGA set to none. Defaults to false.

  • mapping (string) - The ID of a cluster wide mapping. Either this or the host key must be set.

  • pcie (bool) - Present the device as a PCIe device (needs q35 machine model). Defaults to false.

  • mdev (string) - The type of mediated device to use. An instance of this type will be created on startup of the VM and will be cleaned up when the VM stops.

  • hide_rombar (bool) - Specify whether or not the device’s ROM BAR will be visible in the guest’s memory map. Defaults to false.

  • romfile (string) - Custom PCI device rom filename (must be located in /usr/share/kvm/).

  • sub_device_id (string) - Override PCI subsystem device ID visible to guest.

  • sub_vendor_id (string) - Override PCI subsystem vendor ID visible to guest.

  • vendor_id (string) - Override PCI vendor ID visible to guest.

  • x_vga (bool) - Enable vfio-vga device support. Defaults to false.

Example: Cloud-Init enabled Debian

Here is a basic example creating a Debian 10 server image. This assumes that there exists a Cloud-Init enabled image on the Proxmox server named debian-10-4.

HCL2

variable "proxmox_password" {
  type    = string
  default = "supersecret"
}

variable "proxmox_username" {
  type    = string
  default = "apiuser@pve"
}

source "proxmox-clone" "debian" {
  clone_vm                 = "debian-10-4"
  cores                    = 1
  insecure_skip_tls_verify = true
  memory                   = 2048
  network_adapters {
    bridge = "vmbr0"
    model  = "virtio"
  }
  node                 = "pve"
  os                   = "l26"
  password             = "${var.proxmox_password}"
  pool                 = "api-users"
  proxmox_url          = "https://my-proxmox.my-domain:8006/api2/json"
  sockets              = 1
  ssh_username         = "root"
  template_description = "image made from cloud-init image"
  template_name        = "debian-scaffolding"
  username             = "${var.proxmox_username}"
}

build {
  sources = ["source.proxmox-clone.debian"]
}

JSON

{
  "variables": {
    "proxmox_username": "apiuser@pve",
    "proxmox_password": "supersecret"
  },
  "builders": [
    {
      "type": "proxmox-clone",
      "proxmox_url": "https://my-proxmox.my-domain:8006/api2/json",
      "username": "{{user `proxmox_username`}}",
      "password": "{{user `proxmox_password`}}",
      "ssh_username": "root",
      "node": "pve",
      "insecure_skip_tls_verify": true,
      "clone_vm": "debian-10-4",
      "template_name": "debian-scaffolding",
      "template_description": "image made from cloud-init image",
      "pool": "api-users",
      "os": "l26",
      "cores": 1,
      "sockets": 1,
      "memory": 2048,
      "network_adapters": [
        {
          "model": "virtio",
          "bridge": "vmbr0"
        }
      ]
    }
  ]
}