diff --git a/vars.tf b/vars.tf
index 3d6543e9c9a28f06f25028af8b31b31e5914a866..8bc615c75e94b7b300fbe6b812c1cb12ff2a8ffc 100644
--- a/vars.tf
+++ b/vars.tf
@@ -19,7 +19,7 @@ variable "ood_instance_name" { default = "ood"}
 variable "image_ohpc" {default = "ohpc-V0.7"}
 variable "image_ood" {default = "ood_3"}
 variable "ood_private_ip" {default = "10.1.1.11"}
-variable "flavor" {default = "m1.medium"}
+variable "flavor" {default = "m1.xlarge}
 variable "internal_network" {default = "clusternet"}
 variable "external_network" {default = "dmznet"}
 variable "host_prefix" {default = "164.111.161.%s"}
@@ -29,4 +29,4 @@ variable "ssh_private_key" {default = "~/.ssh/id_rsa"}
 
 # variables for node creation module
 variable "image_compute" {default = "compute-v3"}
-variable "compute_node_count" {default = 2}
+variable "compute_node_count" {default = 1}