Adding a VM to a resource pool is not reflected in tfstate

[meerumschlungen]

When cloning VM templates, the specified pool is not stored correctly. Note how the following main.tf adds the 3 VMs to the pool "production":

locals {
  hosts = {
    "swarm-w01" = { ipconfig = "ip=10.0.2.90/24,gw=10.0.2.1", hagroup = "pve01-first" },
    "swarm-w02" = { ipconfig = "ip=10.0.2.91/24,gw=10.0.2.1", hagroup = "pve02-first" },
    "swarm-w03" = { ipconfig = "ip=10.0.2.92/24,gw=10.0.2.1", hagroup = "pve03-first" },
  }
}

resource "proxmox_vm_qemu" "vm" {
  for_each = tomap(local.hosts)

  name = each.key
  target_node = "pve01"
  pool = "production"
  clone = "debian12-cloudinit"

  os_type = "cloud-init"
  onboot = true
  bios = "ovmf"

  cores   = 4
  sockets = 1
  memory  = 4096

  scsihw = "virtio-scsi-pci"
  disks {
    scsi {
      scsi0 {
        disk {
          storage = "pve-ceph"
          emulatessd = true
          discard = true
          size = "8G"
        }
      }
    }
    ide {
      ide2 {
        cloudinit {
          storage = "pve-ceph"
        }
      }
    }
  }

  network {
    model = "virtio"
    bridge = "vnet002"
  }
  ipconfig0 = each.value.ipconfig
  agent = 1

  hagroup = each.value.hagroup
  hastate = "started"

  ciuser = "user"
  sshkeys = data.http.ssh_keys.response_body
}

When performing terraform apply the VMs actually get added to the resource pool. This is not reflected in terraform.tfstate:

Thus, without any changes, when terraform plan is executed directly afterwards, it assumes the pool property needs to be changed:

$ terraform plan
proxmox_vm_qemu.vm["swarm-w01"]: Refreshing state... [id=pve01/qemu/121]
proxmox_vm_qemu.vm["swarm-w02"]: Refreshing state... [id=pve02/qemu/122]
proxmox_vm_qemu.vm["swarm-w03"]: Refreshing state... [id=pve03/qemu/123]

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with
the following symbols:
  ~ update in-place

Terraform will perform the following actions:

  # proxmox_vm_qemu.vm["swarm-w01"] will be updated in-place
  ~ resource "proxmox_vm_qemu" "vm" {
        id                     = "pve01/qemu/121"
        name                   = "swarm-w01"
      + pool                   = "production"
        tags                   = null
        # (48 unchanged attributes hidden)

        # (3 unchanged blocks hidden)
    }

  # proxmox_vm_qemu.vm["swarm-w02"] will be updated in-place
  ~ resource "proxmox_vm_qemu" "vm" {
        id                     = "pve02/qemu/122"
        name                   = "swarm-w02"
      + pool                   = "production"
        tags                   = null
        # (48 unchanged attributes hidden)

        # (3 unchanged blocks hidden)
    }

  # proxmox_vm_qemu.vm["swarm-w03"] will be updated in-place
  ~ resource "proxmox_vm_qemu" "vm" {
        id                     = "pve03/qemu/123"
        name                   = "swarm-w03"
      + pool                   = "production"
        tags                   = null
        # (48 unchanged attributes hidden)

        # (3 unchanged blocks hidden)
    }

Plan: 0 to add, 3 to change, 0 to destroy.