Implement K8s API LB using cloudscale.ch LB

Author: simu

lb.tf

@@ -19,3 +19,39 @@ module "lb" {
   internal_vip             = cidrhost(var.privnet_cidr, 100)
   enable_proxy_protocol    = var.lb_enable_proxy_protocol
 }
+
+resource "cloudscale_load_balancer" "api" {
+  name        = "${var.cluster_id}_api"
+  flavor_slug = "lb-standard"
+  zone_slug   = "${var.region}1"
+}
+
+resource "cloudscale_load_balancer_pool" "api" {
+  name               = "${var.cluster_id}_api"
+  algorithm          = "round_robin"
+  protocol           = "tcp"
+  load_balancer_uuid = cloudscale_load_balancer.api.id
+}
+
+resource "cloudscale_load_balancer_listener" "api_k8s" {
+  name          = "${var.cluster_id}_api-k8s"
+  pool_uuid     = cloudscale_load_balancer_pool.api.id
+  protocol      = "tcp"
+  protocol_port = 6443
+}
+
+resource "cloudscale_load_balancer_pool_member" "api" {
+  count         = length(module.master.ip_addresses)
+  name          = "${var.cluster_id}_api-member-${count.index}"
+  pool_uuid     = cloudscale_load_balancer_pool.api.id
+  protocol_port = 6443
+  address       = module.master.ip_addresses[count.index]
+  subnet_uuid   = local.subnet_uuid
+}
+
+resource "cloudscale_load_balancer_health_monitor" "api" {
+  pool_uuid     = cloudscale_load_balancer_pool.api.id
+  type          = "https"
+  http_url_path = "/readyz"
+  http_host     = "api.${var.cluster_id}.${var.base_domain}"
+}