$ terraform apply
module.webapp1.proxmox_vm_qemu.node: Refreshing state... [id=hypervisor3/qemu/125]
module.counters1.proxmox_vm_qemu.node: Refreshing state... [id=branly/qemu/139]
module.search1.proxmox_vm_qemu.node: Refreshing state... [id=branly/qemu/136]
module.worker17.proxmox_vm_qemu.node: Refreshing state... [id=uffizi/qemu/143]
module.kelvingrove.proxmox_vm_qemu.node: Refreshing state... [id=branly/qemu/123]
module.provenance-client01.proxmox_vm_qemu.node: Refreshing state... [id=uffizi/qemu/126]
module.worker18.proxmox_vm_qemu.node: Refreshing state... [id=uffizi/qemu/141]

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  # module.scrubber1.proxmox_vm_qemu.node will be created
  + resource "proxmox_vm_qemu" "node" {
      + additional_wait           = 0
      + agent                     = 0
      + balloon                   = 1024
      + bios                      = "seabios"
      + boot                      = "c"
      + bootdisk                  = (known after apply)
      + ciuser                    = "root"
      + clone                     = "debian-buster-10.10-2021-09-09"
      + clone_wait                = 0
      + cores                     = 4
      + cpu                       = "kvm64"
      + default_ipv4_address      = (known after apply)
      + define_connection_info    = true
      + desc                      = "Scrubber checker services"
      + force_create              = false
      + full_clone                = false
      + guest_agent_ready_timeout = 100
      + hotplug                   = "network,disk,usb"
      + id                        = (known after apply)
      + ipconfig0                 = "ip=192.168.100.90/24,gw=192.168.100.1"
      + kvm                       = true
      + memory                    = 4096
      + name                      = "scrubber1"
      + nameserver                = "192.168.100.29"
      + numa                      = false
      + onboot                    = true
      + oncreate                  = true
      + os_type                   = "cloud-init"
      + preprovision              = true
      + reboot_required           = (known after apply)
      + scsihw                    = (known after apply)
      + searchdomain              = "internal.softwareheritage.org"
      + sockets                   = 1
      + ssh_host                  = (known after apply)
      + ssh_port                  = (known after apply)
      + ssh_user                  = "root"
      + sshkeys                   = "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDVKCfpeIMg7GS3Pk03ZAcBWAeDZ+AvWk2k/pPY0z8MJ3YAbqZkRtSK7yaDgJV6Gro7nn/TxdJLo2jEzzWvlC8d8AEzhZPy5Z/qfVVjqBTBM4H5+e+TItAHFfaY5+0WvIahxcfsfaq70MWfpJhszAah3ThJ4mqzYaw+dkr42+a7Gx3Ygpb/m2dpnFnxvXdcuAJYStmHKU5AWGWWM+Fm50/fdMqUfNd8MbKhkJt5ihXQmZWMOt7ls4N8i5NZWnS9YSWow8X/ENOEqCRN9TyRkc+pPS0w9DNi0BCsWvSRJOkyvQ6caEnKWlNoywCmM1AlIQD3k4RUgRWe0vqg/UKPpH3Z root@terraform"
      + tablet                    = true
      + target_node               = "branly"
      + unused_disk               = (known after apply)
      + vcpus                     = 0
      + vlan                      = -1
      + vmid                      = (known after apply)

      + disk {
          + backup       = 0
          + cache        = "none"
          + file         = (known after apply)
          + format       = (known after apply)
          + iothread     = 0
          + mbps         = 0
          + mbps_rd      = 0
          + mbps_rd_max  = 0
          + mbps_wr      = 0
          + mbps_wr_max  = 0
          + media        = (known after apply)
          + replicate    = 0
          + size         = "30G"
          + slot         = (known after apply)
          + ssd          = 0
          + storage      = "proxmox"
          + storage_type = (known after apply)
          + type         = "virtio"
          + volume       = (known after apply)
        }

      + network {
          + bridge    = "vmbr440"
          + firewall  = false
          + link_down = false
          + macaddr   = (known after apply)
          + model     = "virtio"
          + queues    = (known after apply)
          + rate      = (known after apply)
          + tag       = -1
        }
    }

Plan: 1 to add, 0 to change, 0 to destroy.

Changes to Outputs:
  + scrubber1_summary = <<-EOT

        hostname: scrubber1
        fqdn: scrubber1.internal.softwareheritage.org
        network: ip=192.168.100.90/24,gw=192.168.100.1
    EOT
╷
│ Warning: Experimental feature "module_variable_optional_attrs" is active
│
│   on versions.tf line 3, in terraform:
│    3:   experiments      = [module_variable_optional_attrs]
│
│ Experimental features are subject to breaking changes in future minor or patch releases, based on feedback.
│
│ If you have feedback on the design of this feature, please open a GitHub issue to discuss it.
│
│ (and 8 more similar warnings elsewhere)
╵

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: yes

module.scrubber1.proxmox_vm_qemu.node: Creating...
module.scrubber1.proxmox_vm_qemu.node: Still creating... [10s elapsed]
module.scrubber1.proxmox_vm_qemu.node: Still creating... [20s elapsed]
module.scrubber1.proxmox_vm_qemu.node: Still creating... [30s elapsed]
module.scrubber1.proxmox_vm_qemu.node: Still creating... [40s elapsed]
module.scrubber1.proxmox_vm_qemu.node: Still creating... [50s elapsed]
module.scrubber1.proxmox_vm_qemu.node: Still creating... [1m0s elapsed]
module.scrubber1.proxmox_vm_qemu.node: Still creating... [1m10s elapsed]
╷
│ Error: start failed: QEMU exited with code 1
│
│   with module.scrubber1.proxmox_vm_qemu.node,
│   on ../modules/node/main.tf line 1, in resource "proxmox_vm_qemu" "node":
│    1: resource "proxmox_vm_qemu" "node" {
│

...