🏭️ Refactor prepare-tf

- fix tags so that they don't contain '='
- install metrics-server only if necessary
- set a maximum size to GKE node pool
- change tags to be shorter

prepare-tf/modules/digitalocean/main.tf

@@ -5,7 +5,7 @@ resource "digitalocean_kubernetes_cluster" "_" {
   version = var.k8s_version
 
   node_pool {
-    name       = "dok-x86"
+    name       = "x86"
     tags       = local.common_tags
     size       = local.node_type
     auto_scale = true

prepare-tf/modules/googlecloud/main.tf

@@ -3,14 +3,18 @@ resource "google_container_cluster" "_" {
   project            = "prepare-tf"
   location           = "europe-north1-a"
   min_master_version = var.k8s_version
-  initial_node_count = var.min_nodes_per_pool
-  #max_size    = max(var.min_nodes_per_pool, var.max_nodes_per_pool)
-  #autoscaling = true
-  #autohealing = true
 
-  node_config {
-    tags         = var.common_tags
-    machine_type = local.node_type
+  node_pool {
+    name = "x86"
+    node_config {
+      tags         = var.common_tags
+      machine_type = local.node_type
+    }
+    initial_node_count = var.min_nodes_per_pool
+    autoscaling {
+      min_node_count = var.min_nodes_per_pool
+      max_node_count = max(var.min_nodes_per_pool, var.max_nodes_per_pool)
+    }
   }
 
   # This is not strictly necessary.
@@ -23,3 +27,4 @@ resource "google_container_cluster" "_" {
     }
   }
 }
+

prepare-tf/modules/googlecloud/outputs.tf

@@ -29,3 +29,7 @@ output "kubeconfig" {
 output "cluster_id" {
   value = google_container_cluster._.id
 }
+
+output "has_metrics_server" {
+  value = true
+}

prepare-tf/modules/linode/outputs.tf

@@ -5,3 +5,7 @@ output "kubeconfig" {
 output "cluster_id" {
   value = linode_lke_cluster._.id
 }
+
+output "has_metrics_server" {
+  value = false
+}

prepare-tf/modules/oraclecloud/outputs.tf

@@ -9,3 +9,7 @@ output "kubeconfig" {
 output "cluster_id" {
   value = oci_containerengine_cluster._.id
 }
+
+output "has_metrics_server" {
+  value = false
+}

prepare-tf/modules/scaleway/main.tf

@@ -8,7 +8,7 @@ resource "scaleway_k8s_cluster" "_" {
 
 resource "scaleway_k8s_pool" "_" {
   cluster_id  = scaleway_k8s_cluster._.id
-  name        = "scw-x86"
+  name        = "x86"
   tags        = var.common_tags
   node_type   = local.node_type
   size        = var.min_nodes_per_pool

prepare-tf/modules/scaleway/outputs.tf

@@ -5,3 +5,7 @@ output "kubeconfig" {
 output "cluster_id" {
   value = scaleway_k8s_cluster._.id
 }
+
+output "has_metrics_server" {
+  value = var.k8s_version >= 1.22
+}