Added option to enable or disable Cloud NAT.

modules/network/main.tf

@@ -15,6 +15,7 @@ resource "google_compute_subnetwork" "subnet" {
 
 # Cloud NAT
 resource "google_compute_router" "cr" {
+  count   = var.nat ? 1 : 0
   name    = "${var.name}-router"
   network = var.name
 
@@ -22,8 +23,9 @@ resource "google_compute_router" "cr" {
 }
 
 resource "google_compute_router_nat" "nat" {
+  count                              = var.nat ? 1 : 0
   name                               = "${var.name}-nat"
-  router                             = google_compute_router.cr.name
+  router                             = google_compute_router.cr[0].name
   nat_ip_allocate_option             = "AUTO_ONLY"
   source_subnetwork_ip_ranges_to_nat = "ALL_SUBNETWORKS_ALL_IP_RANGES"
   enable_dynamic_port_allocation     = true

modules/network/variables.tf

@@ -18,3 +18,9 @@ variable "subnets" {
     error_message = "The region for the first subnet must be specified."
   }
 }
+
+variable "nat" {
+  description = "Enable Cloud NAT for the network."
+  type        = bool
+  default     = false
+}