diff --git a/main.tf b/main.tf
index 1fdfc49b3c81ac055cd5871e71681daba142501b..f936ad13e2e0f850eabc4313cb0d863658a1d7d8 100644
--- a/main.tf
+++ b/main.tf
@@ -5,8 +5,8 @@ resource "openstack_compute_keypair_v2" "keypair" {
 
 # creates dmznet
 resource "openstack_networking_network_v2" "external_net" {
-  name           = var.external-net
-  admin_state_up = var.admin-state-up
+  name            = var.external-net
+  admin_state_up  = var.admin-state-up
 }
 
 resource "openstack_networking_subnet_v2" "external_subnet" {
@@ -137,7 +137,7 @@ resource "openstack_compute_instance_v2" "c0" {
   flavor_name     = var.flavor
   key_pair        = openstack_compute_keypair_v2.keypair.name
   security_groups = ["default"]
-  count           = 2
+  count           = var.compute_node_count
 
 # defines the networks of the instance
   network {
diff --git a/vars.tf b/vars.tf
index a4e12bb16554bf6a36f115957530ab9d361f8716..4ae6e96c60ac36d448e3319c38c4cf70161b4c71 100644
--- a/vars.tf
+++ b/vars.tf
@@ -44,6 +44,9 @@ variable "image_ood" {
 variable "image_compute" {
   default = "CentOS-7-x86_64-GenericCloud-1905"
 }
+variable "compute_node_count" {
+  default = 2
+}
 
 variable "keypair-name" {
   default = "os-gen-keypair"