From 5c8f53a2d81f0a3badf333254c6a52dd07f04382 Mon Sep 17 00:00:00 2001
From: Malte Poll <1780588+malt3@users.noreply.github.com>
Date: Wed, 28 Feb 2024 14:25:10 +0100
Subject: [PATCH] terraform: use volumes instead of ephemeral local disks on
 STACKIT

Ephemeral local disks are discouraged on STACKIT.
Use volumes instead.
This sets an upper bound of 5GB on the boot disk.
If Constellation OS images ever grow beyond that, we will run into
problems.
---
 .../infrastructure/openstack/modules/instance_group/main.tf    | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/terraform/infrastructure/openstack/modules/instance_group/main.tf b/terraform/infrastructure/openstack/modules/instance_group/main.tf
index ec9f7f72e..0d2cdc77a 100644
--- a/terraform/infrastructure/openstack/modules/instance_group/main.tf
+++ b/terraform/infrastructure/openstack/modules/instance_group/main.tf
@@ -58,7 +58,8 @@ resource "openstack_compute_instance_v2" "instance_group_member" {
   block_device {
     uuid                  = var.image_id
     source_type           = "image"
-    destination_type      = "local"
+    destination_type      = "volume"
+    volume_size           = "5"
     boot_index            = 0
     delete_on_termination = true
   }