Terraform loses track of instances that reaches timeout for wait_for_network in incus_instance

[vegardx]

When you the argument wait_for_network true in incus_network and it for some reason fails to obtain an IP-address before the timeout then terraform loses track of the instance. All subsequent runs will return an error that the instance already exists, but since terraform doesn't have it in the state file, it doesn't know about it.

Example code:

resource "incus_instance" "this" {
  count = 10

  type                     = "container"
  name                     = "instance-${count.index}"
  image                    = "images:debian/12/cloud"
  wait_for_network         = true

  config = {
    "boot.autostart" = true
  }
}

output "instance_ips" {
  value = { for idx, instance in incus_instance.this : instance.name => instance.ipv4_address }
}

Expected results:

instance_ip = {
  "instance-0" = "..."
...
}

Actual results:

incus_instance.this[8]: Creating...
incus_instance.this[4]: Creating...
incus_instance.this[5]: Creating...
incus_instance.this[6]: Creating...
incus_instance.this[2]: Creating...
incus_instance.this[7]: Creating...
incus_instance.this[9]: Creating...
incus_instance.this[3]: Creating...
incus_instance.this[1]: Creating...
incus_instance.this[4]: Still creating... [10s elapsed]
...
incus_instance.this[6]: Still creating... [3m10s elapsed]
╷
│ Error: Failed to wait for instance "instance-4" to get an IP address
│
│   with incus_instance.this[4],
│   on main.tf line 74, in resource "incus_instance" "this":
│   74: resource "incus_instance" "this" {
│
│ timeout while waiting for state to become 'OK' (last state: 'Waiting for network',
│ timeout: 3m0s)
╵
╷
│ Error: Failed to wait for instance "instance-9" to get an IP address
│
│   with incus_instance.this[9],
│   on main.tf line 74, in resource "incus_instance" "this":
│   74: resource "incus_instance" "this" {
│
│ timeout while waiting for state to become 'OK' (last state: 'Waiting for network',
│ timeout: 3m0s)
╵
╷
│ Error: Failed to wait for instance "instance-1" to get an IP address
│
│   with incus_instance.this[1],
│   on main.tf line 74, in resource "incus_instance" "this":
│   74: resource "incus_instance" "this" {
│
│ timeout while waiting for state to become 'OK' (last state: 'Waiting for network',
│ timeout: 3m0s)
╵
╷
│ Error: Failed to wait for instance "instance-6" to get an IP address
│
│   with incus_instance.this[6],
│   on main.tf line 74, in resource "incus_instance" "this":
│   74: resource "incus_instance" "this" {
│
│ timeout while waiting for state to become 'OK' (last state: 'Waiting for network',
│ timeout: 3m0s)
╵
╷
│ Error: Failed to wait for instance "instance-2" to get an IP address
│
│   with incus_instance.this[2],
│   on main.tf line 74, in resource "incus_instance" "this":
│   74: resource "incus_instance" "this" {
│
│ timeout while waiting for state to become 'OK' (last state: 'Waiting for network',
│ timeout: 3m0s)
╵
╷
│ Error: Failed to wait for instance "instance-3" to get an IP address
│
│   with incus_instance.this[3],
│   on main.tf line 74, in resource "incus_instance" "this":
│   74: resource "incus_instance" "this" {
│
│ timeout while waiting for state to become 'OK' (last state: 'Waiting for network',
│ timeout: 3m0s)
╵
╷
│ Error: Failed to wait for instance "instance-5" to get an IP address
│
│   with incus_instance.this[5],
│   on main.tf line 74, in resource "incus_instance" "this":
│   74: resource "incus_instance" "this" {
│
│ timeout while waiting for state to become 'OK' (last state: 'Waiting for network',
│ timeout: 3m0s)
╵
╷
│ Error: Failed to wait for instance "instance-8" to get an IP address
│
│   with incus_instance.this[8],
│   on main.tf line 74, in resource "incus_instance" "this":
│   74: resource "incus_instance" "this" {
│
│ timeout while waiting for state to become 'OK' (last state: 'Waiting for network',
│ timeout: 3m0s)
╵
╷
│ Error: Failed to wait for instance "instance-7" to get an IP address
│
│   with incus_instance.this[7],
│   on main.tf line 74, in resource "incus_instance" "this":
│   74: resource "incus_instance" "this" {
│
│ timeout while waiting for state to become 'OK' (last state: 'Waiting for network',
│ timeout: 3m0s)