k3d: allow to optionally enable metrics upstream

Signed-off-by: Silvio Moioli <silvio@moioli.net>

darts/k3d_full.yaml

@@ -11,6 +11,7 @@ tofu_variables:
 #  upstream_server_count: 1
 #  upstream_agent_count: 0
 #  upstream_reserve_node_for_monitoring: false
+#  upstream_enable_metrics: false
 #  downstream_server_count: 1
 #  downstream_agent_count: 0
 #  deploy_tester_cluster: true

tofu/main/k3d/locals.tf

@@ -5,6 +5,7 @@ locals {
     agent_count                 = var.upstream_agent_count
     distro_version              = var.distro_version
     reserve_node_for_monitoring = var.upstream_reserve_node_for_monitoring
+    enable_metrics              = var.upstream_enable_metrics
     }],
     [for i in range(var.downstream_cluster_count) :
       {
@@ -13,6 +14,7 @@ locals {
         agent_count                 = var.downstream_agent_count
         distro_version              = var.distro_version
         reserve_node_for_monitoring = false
+        enable_metrics              = false
     }],
     var.deploy_tester_cluster ? [{
       name                        = "tester"
@@ -20,6 +22,7 @@ locals {
       agent_count                 = var.tester_agent_count
       distro_version              = var.distro_version
       reserve_node_for_monitoring = false
+      enable_metrics              = false
     }] : []
   )
 }

tofu/main/k3d/main.tf

@@ -25,4 +25,5 @@ module "cluster" {
   network_name          = module.network.name
   pull_proxy_registries = module.network.pull_proxy_registries
   enable_audit_log      = local.all_clusters[count.index].name == "upstream"
+  enable_metrics        = local.all_clusters[count.index].enable_metrics
 }

tofu/main/k3d/variables.tf

@@ -28,6 +28,11 @@ variable "upstream_reserve_node_for_monitoring" {
   default = false
 }
 
+variable "upstream_enable_metrics" {
+  description = "Metrics are disabled by default due to https://github.com/kubernetes/kubernetes/issues/104459"
+  default     = false
+}
+
 
 # Downstream cluster specifics