# Managed instance group of workers resource "google_compute_region_instance_group_manager" "workers" { name = "${var.name}-worker-group" description = "Compute instance group of ${var.name} workers" # instance name prefix for instances in the group base_instance_name = "${var.name}-worker" region = var.region version { name = "default" instance_template = google_compute_instance_template.worker.self_link } target_size = var.worker_count target_pools = [google_compute_target_pool.workers.self_link] named_port { name = "http" port = "80" } named_port { name = "https" port = "443" } } # Worker instance template resource "google_compute_instance_template" "worker" { name_prefix = "${var.name}-worker-" description = "Worker Instance template" machine_type = var.machine_type metadata = { user-data = data.ct_config.worker-ignition.rendered } scheduling { automatic_restart = var.preemptible ? false : true preemptible = var.preemptible } disk { auto_delete = true boot = true source_image = var.os_image disk_size_gb = var.disk_size } network_interface { network = var.network # Ephemeral external IP access_config { } } can_ip_forward = true tags = ["worker", "${var.cluster_name}-worker", "${var.name}-worker"] guest_accelerator { count = var.accelerator_count type = var.accelerator_type } lifecycle { # To update an Instance Template, Terraform should replace the existing resource create_before_destroy = true } } # Worker Ignition config data "ct_config" "worker-ignition" { content = data.template_file.worker-config.rendered pretty_print = false snippets = var.clc_snippets } # Worker Container Linux config data "template_file" "worker-config" { template = file("${path.module}/cl/worker.yaml.tmpl") vars = { kubeconfig = indent(10, var.kubeconfig) ssh_authorized_key = var.ssh_authorized_key cluster_dns_service_ip = cidrhost(var.service_cidr, 10) cluster_domain_suffix = var.cluster_domain_suffix node_labels = join(",", var.node_labels) } }