specify the root fs size for GC instances

Signed-off-by: Jakub Sokołowski <jakub@status.im>

main.tf

@@ -48,6 +48,7 @@ module "swarm" {
   /* scaling options */
   count       = "${local.ws["hosts_count"]}"
   do_size     = "s-1vcpu-2gb"
+  gc_size     = "n1-standard-1"
   /* general */
   env         = "${var.env}"
   domain      = "${var.domain}"

modules/google-cloud/main.tf

@@ -54,6 +54,7 @@ resource "google_compute_instance" "host" {
   boot_disk {
     initialize_params {
       image = "${var.image}"
+      size  = "${var.disk_size}"
     }
   }
 

modules/google-cloud/variables.tf

@@ -26,6 +26,11 @@ variable image {
   default     = "ubuntu-os-cloud/ubuntu-1804-lts"
 }
 
+variable disk_size {
+  description = "Size in GB of the root filesystem."
+  default     = 50
+}
+
 variable provider {
   description = "Short name of the provider used."
   /* Google Cloud */