terraform: allow STACKIT / OpenStack instance type to be UUID or name

internal/config/config.go

@@ -913,7 +913,7 @@ func (c *Config) WithOpenStackProviderDefaults(openStackProvider string) *Config
 		c.Provider.OpenStack.YawolFlavorID = "3b11b27e-6c73-470d-b595-1d85b95a8cdf"
 		c.Provider.OpenStack.DeployCSIDriver = toPtr(true)
 		for groupName, group := range c.NodeGroups {
-			group.InstanceType = "2715eabe-3ffc-4c36-b02a-efa8c141a96a"
+			group.InstanceType = "m1a.4cd"
 			group.StateDiskType = "storage_premium_perf6"
 			c.NodeGroups[groupName] = group
 		}

terraform/infrastructure/openstack/modules/instance_group/main.tf

@@ -11,6 +11,7 @@ locals {
   tags              = distinct(sort(concat(var.tags, ["constellation-role-${var.role}"], ["constellation-node-group-${var.node_group_name}"])))
   group_uid         = random_id.uid.hex
   name              = "${var.base_name}-${var.role}-${local.group_uid}"
+  flavor_id_is_uuid = length(var.flavor_id) == 36 && length(regexall("^[[:xdigit:]]{8}-[[:xdigit:]]{4}-[[:xdigit:]]{4}-[[:xdigit:]]{4}-[[:xdigit:]]{12}$", var.flavor_id)) == 1
 }
 
 resource "random_id" "uid" {
@@ -36,11 +37,16 @@ resource "openstack_networking_port_v2" "port" {
 #   policies = ["soft-anti-affinity"]
 # }
 
+data "openstack_compute_flavor_v2" "flavor" {
+  flavor_id = local.flavor_id_is_uuid ? var.flavor_id : null
+  name      = local.flavor_id_is_uuid ? null : var.flavor_id
+}
+
 resource "openstack_compute_instance_v2" "instance_group_member" {
   name      = "${local.name}-${count.index}"
   count     = var.initial_count
   image_id  = var.image_id
-  flavor_id = var.flavor_id
+  flavor_id = data.openstack_compute_flavor_v2.flavor.id
   tags      = local.tags
   # TODO(malt3): get this API enabled in the test environment
   # scheduler_hints {