From bae77832d269d3c4ac9857c16f0c8736d2cb5da7 Mon Sep 17 00:00:00 2001
From: Tom Alexander <tom@fizz.buzz>
Date: Sun, 18 Jul 2021 18:27:24 -0400
Subject: [PATCH] Add machine type variable to GKE.

---
 terraform/basic_gke/main.tf  | 1 +
 terraform/modules/gke/gke.tf | 9 ++++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/terraform/basic_gke/main.tf b/terraform/basic_gke/main.tf
index 77aee44..747dcba 100644
--- a/terraform/basic_gke/main.tf
+++ b/terraform/basic_gke/main.tf
@@ -80,6 +80,7 @@ module "gke" {
   private_network_id    = module.networking.private_network_id
   private_subnetwork_id = module.networking.private_subnetwork_id
   service_cloudkms      = google_project_service.cloudkms
+  machine_type          = "e2-standard-2"
 
   depends_on = [
     module.networking
diff --git a/terraform/modules/gke/gke.tf b/terraform/modules/gke/gke.tf
index 7e5e9aa..b10f266 100644
--- a/terraform/modules/gke/gke.tf
+++ b/terraform/modules/gke/gke.tf
@@ -22,6 +22,13 @@ variable "private_subnetwork_id" {
   type        = string
 }
 
+variable "machine_type" {
+  description = "Machine type for GKE nodes."
+  type        = string
+  # Default is very cheap but low ram. Good for simple testing but not for production. Try e2-standard-2 if you need more ram.
+  default = "e2-medium"
+}
+
 output "gke_connect_command" {
   description = "Command to run to connect to the kubernetes cluster."
   value       = "gcloud container clusters get-credentials ${google_container_cluster.primary.name} --region ${var.region} --project ${var.project}"
@@ -179,7 +186,7 @@ resource "google_container_node_pool" "primary" {
 
   node_config {
     preemptible  = true
-    machine_type = "e2-medium"
+    machine_type = var.machine_type
 
     service_account = google_service_account.gke.email
     oauth_scopes = [