OpenTofu/Terraform config equivalent of launch --network

LXD Support
1

Hello,

I have a lxdbr0 network and a macvlan network set up on my LXD. I can launch a new instance and put it on the macvlan network with:

lxc launch ubuntu:22.04 [remote]:test --network macvlan`

and it shows if I look at:

lxc network show [remote]:macvlan

I am trying to find the equivalent configuration to use with OpenTofu/Terraform:
https://registry.terraform.io/providers/terraform-lxd/lxd/latest/docs/resources/instance

The only info in there I could see on configuring the network was:
https://registry.terraform.io/providers/terraform-lxd/lxd/latest/docs/resources/instance#instance-network-access
which didn’t sound like my situation, but I tried anyway:

  config = {
    "user.access_interface" = "macvlan"
  }

and it didn’t work. I suspect I could do it with a profile, but I didn’t want to do that at this stage if I could avoid it. Thanks!

2

Try using the https://registry.terraform.io/providers/terraform-lxd/lxd/latest/docs/resources/instance#device section, and match it with the output of lxc config show <instance> --expanded for an instance connected to a macvlan network.

The type will be nic, then the device’s properties will need nictype: macvlan and parent: <parent interface> at least.

3

Haha, sorry Tom. I just made this work myself after finding that page and this and was coming here to update the answer for everyone.

Yes, it seems to work with a device block on the instance:

  device {
    name = "eth0"
    type = "nic"
    properties = {
      network = "macvlan"
    }
  }

Hopefully this makes it slightly quicker for the next person out there searching.

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