Add optional controller_type and worker_type vars on GCP

* Remove optional machine_type variable on Google Cloud
* Use controller_type and worker_type instead

CHANGES.md

@@ -13,6 +13,9 @@ Notable changes between versions.
 #### Google Cloud
 
 * Add `disk_size` variable for setting instance disk size in GB
+* Add `controller_type` variable for setting machine type for controllers
+* Add `worker_type` variable for setting machine type for workers
+* Remove optional variable `machine_type`. Use `controller_type` and `worker_type`.
 
 ## v1.9.6
 

docs/aws.md

@@ -249,8 +249,8 @@ Reference the DNS zone id with `"${aws_route53_zone.zone-for-clusters.zone_id}"`
 |:-----|:------------|:--------|:--------|
 | controller_count | Number of controllers (i.e. masters) | 1 | 1 |
 | worker_count | Number of workers | 1 | 3 |
-| controller_type | EC2 instance type for controllers | "t2.small" | "t2.medium" |
-| worker_type | EC2 instance type for workers | "t2.small" | "t2.medium" |
+| controller_type | EC2 instance type for controllers | "t2.small" | See below |
+| worker_type | EC2 instance type for workers | "t2.small" | See below |
 | os_channel | Container Linux AMI channel | stable | stable, beta, alpha |
 | disk_size | Size of the EBS volume in GB | "40" | "100" |
 | controller_clc_snippets | Controller Container Linux Config snippets | [] | |

docs/google-cloud.md

@@ -254,7 +254,8 @@ resource "google_dns_managed_zone" "zone-for-clusters" {
 |:-----|:------------|:--------|:--------|
 | controller_count | Number of controllers (i.e. masters) | 1 | 1 |
 | worker_count | Number of workers | 1 | 3 |
-| machine_type | Machine type for compute instances | "n1-standard-1" | See below |
+| controller_type | Machine type for controllers | "n1-standard-1" | See below |
+| worker_type | Machine type for workers | "n1-standard-1" | See below |
 | os_image | Container Linux image for compute instances | "coreos-stable" | "coreos-stable-1632-3-0-v20180215" |
 | disk_size | Size of the disk in GB | 40 | 100 |
 | worker_preemptible | If enabled, Compute Engine will terminate workers randomly within 24 hours | false | true |

google-cloud/container-linux/kubernetes/cluster.tf

@@ -8,7 +8,7 @@ module "controllers" {
   dns_zone      = "${var.dns_zone}"
   dns_zone_name = "${var.dns_zone_name}"
   count         = "${var.controller_count}"
-  machine_type  = "${var.machine_type}"
+  machine_type  = "${var.controller_type}"
   os_image      = "${var.os_image}"
   disk_size     = "${var.disk_size}"
 
@@ -30,7 +30,7 @@ module "workers" {
   region       = "${var.region}"
   network      = "${google_compute_network.network.name}"
   count        = "${var.worker_count}"
-  machine_type = "${var.machine_type}"
+  machine_type = "${var.worker_type}"
   os_image     = "${var.os_image}"
   disk_size    = "${var.disk_size}"
   preemptible  = "${var.worker_preemptible}"

google-cloud/container-linux/kubernetes/variables.tf

@@ -34,10 +34,16 @@ variable "worker_count" {
   description = "Number of workers"
 }
 
-variable "machine_type" {
-  type        = "string"
-  default     = "n1-standard-1"
-  description = "Machine type for compute instances (see `gcloud compute machine-types list`)"
+variable controller_type {
+  type = "string"
+  default = "n1-standard-1"
+  description = "Machine type for controllers (see `gcloud compute machine-types list`)"
+}
+
+variable worker_type {
+  type = "string"
+  default = "n1-standard-1"
+  description = "Machine type for controllers (see `gcloud compute machine-types list`)"
 }
 
 variable "os_image" {