diff --git a/IaC-test/k8snodes-sto4.tf b/IaC-test/k8snodes-sto4.tf
index f313129..ac32c56 100644
--- a/IaC-test/k8snodes-sto4.tf
+++ b/IaC-test/k8snodes-sto4.tf
@@ -1,16 +1,75 @@
 #
-# Controller node resources
+# Global definitions for sto4
 #
-
 locals {
   dc         = "sto4"
   nodenrbase = index(var.datacenters, "sto4")
   indexjump  = length(var.datacenters)
 }
 
-resource "openstack_networking_port_v2" "kubewport-sto4" {
+#
+# Controller node resources
+#
+
+resource "openstack_networking_port_v2" "kubecport-sto4" {
   name                = "${var.controller_name}${count.index * local.indexjump + 1 + local.nodenrbase}-${replace(var.dns_suffix,".","-")}-${local.dc}-port"
   # We create as many ports as there are instances created
+  count               =  var.controllerdcreplicas
+  network_id          = data.openstack_networking_network_v2.public-sto4.id
+  # A list of security group ID
+  security_group_ids  = [
+                          resource.openstack_networking_secgroup_v2.ssh-from-jump-hosts-sto4.id,
+                          resource.openstack_networking_secgroup_v2.microk8s-sto4.id
+                        ]
+  admin_state_up      = "true"
+  provider            = openstack.sto4
+}
+
+# Boot volume for node
+resource "openstack_blockstorage_volume_v3" "kubecvolumeboot-sto4" {
+  count                = var.workerdcreplicas # Replicas per datacenter
+  name                 = "${var.controller_name}${count.index * local.indexjump + 1 + local.nodenrbase}-${replace(var.dns_suffix,".","-")}-${local.dc}-vol"
+  description          = "OS volume for kubernetes worker node ${count.index * local.indexjump + 1 + local.nodenrbase}"
+  size                 = 100
+  image_id             = data.openstack_images_image_v2.debian12image-sto4.id
+  enable_online_resize = true # Allow us to resize volume while attached.
+  provider             = openstack.sto4
+}
+
+resource "openstack_compute_instance_v2" "controller-nodes-sto4" {
+  count           = var.controllerdcreplicas # Replicas per datacenter
+  name            = "${var.controller_name}${count.index * local.indexjump + 1 + local.nodenrbase}.${var.dns_suffix}"
+  flavor_name     = "${var.controller_instance_type}"
+  key_pair        = "${var.keynameworkers}"
+  provider        = openstack.sto4
+  security_groups = [
+                      resource.openstack_networking_secgroup_v2.microk8s-sto4.name,
+                      resource.openstack_networking_secgroup_v2.ssh-from-jump-hosts-sto4.name
+                    ]
+
+  block_device {
+    uuid             = resource.openstack_blockstorage_volume_v3.kubecvolumeboot-sto4[count.index].id
+    source_type      = "volume"
+    destination_type = "volume"
+    boot_index       = 0
+  }
+
+  scheduler_hints {
+    group = openstack_compute_servergroup_v2.controllers-sto4.id
+  }
+  network {
+    port   = resource.openstack_networking_port_v2.kubecport-sto4[count.index].id
+  }
+}
+
+
+#
+# Worker node resources
+#
+
+resource "openstack_networking_port_v2" "kubewport-sto4" {
+  name                = "${var.worker_name}${count.index * local.indexjump + 1 + local.nodenrbase}-${replace(var.dns_suffix,".","-")}-${local.dc}-port"
+  # We create as many ports as there are instances created
   count               =  var.workerdcreplicas
   network_id          = data.openstack_networking_network_v2.public-sto4.id
   # A list of security group ID