Static IPv4 for instance for Terraform Incus provider

Incus
1

Hello,
I was wondering if there was a way to apply a static address to an instance by using the provider Incus in Terraform.

I know that the command works:
incus config device set <instance_name> <nic_name> ipv4.address=<ipv4_address>

Followed by a restart of the instance.

But is there a prettier way to do it?

2

If you define your instance through Terraform, then simply define its network interface in the devices list and set ipv4.address to the value you want.

3

Thanks for your response :slight_smile:
So i tried to simply set the ipv4 address but here’s the output:

$ cat main.tf
terraform {
  required_providers {
    incus = {
      source = "lxc/incus"
    }
  }
}

provider "incus" {
}

resource "incus_network" "test_network" {
  name        = "test_network"
  description = "Réseau de test"

  config = {
    "ipv4.address"  = "10.10.100.1/24"
    "ipv4.nat"      = "true"
    "ipv6.address"  = "none"
  }
}

resource "incus_instance" "test" {
  name      = "test"
  image     = "images:debian/12/cloud"
  ephemeral = false
  type      = "virtual-machine"

  device {
    name = "eth0"
    type = "nic"

    properties = {
      nictype = "bridged"
      parent  = incus_network.test_network.name
      ipv4.address = "10.10.100.50"
    }
  }
}

$ tofu apply
╷
│ Error: Reference to undeclared resource
│
│   on main.tf line 36, in resource "incus_instance" "test":
│   36:       ipv4.address = "10.10.100.50"
│
│ A managed resource "ipv4" "address" has not been declared in the root module.
╵

So I use OpenTofu but it’s clearly the same to Terraform.
Maybe I misunderstand the way to use the provider correctly.

4

Maybe try “ipv4.address”, properties with a dot in them may need quoting.

5

Thank you it’s working now! :smiley: