88 lines
2.4 KiB
Terraform
88 lines
2.4 KiB
Terraform
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# Managed Instance Group
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resource "google_compute_instance_group_manager" "workers" {
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name = "${var.cluster_name}-worker-group"
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description = "Compute instance group of ${var.cluster_name} workers"
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# Instance name prefix for instances in the group
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base_instance_name = "${var.cluster_name}-worker"
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instance_template = "${google_compute_instance_template.worker.self_link}"
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update_strategy = "RESTART"
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zone = "${var.zone}"
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target_size = "${var.count}"
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# Target pool instances in the group should be added into
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target_pools = [
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"${google_compute_target_pool.workers.self_link}",
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]
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}
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# bootkube-worker Container Linux config
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data "template_file" "worker_config" {
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template = "${file("${path.module}/cl/bootkube-worker.yaml.tmpl")}"
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vars = {
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k8s_dns_service_ip = "${cidrhost(var.service_cidr, 10)}"
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k8s_etcd_service_ip = "${cidrhost(var.service_cidr, 15)}"
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ssh_authorized_key = "${var.ssh_authorized_key}"
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kubeconfig_ca_cert = "${var.kubeconfig_ca_cert}"
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kubeconfig_kubelet_cert = "${var.kubeconfig_kubelet_cert}"
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kubeconfig_kubelet_key = "${var.kubeconfig_kubelet_key}"
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kubeconfig_server = "${var.kubeconfig_server}"
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}
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}
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data "ct_config" "worker_ign" {
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content = "${data.template_file.worker_config.rendered}"
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pretty_print = false
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}
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resource "google_compute_instance_template" "worker" {
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name_prefix = "${var.cluster_name}-worker-"
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description = "bootkube-worker Instance template"
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machine_type = "${var.machine_type}"
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metadata {
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user-data = "${data.ct_config.worker_ign.rendered}"
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}
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scheduling {
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automatic_restart = "${var.preemptible ? false : true}"
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preemptible = "${var.preemptible}"
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}
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# QUIRK: Undocumented field defaults to true if not set
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automatic_restart = "${var.preemptible ? false : true}"
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disk {
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auto_delete = true
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boot = true
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source_image = "${var.os_image}"
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disk_size_gb = "${var.disk_size}"
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}
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network_interface {
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network = "${var.network}"
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# Ephemeral external IP
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access_config = {}
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}
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can_ip_forward = true
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service_account {
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scopes = [
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"storage-ro",
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"compute-rw",
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"datastore",
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"userinfo-email",
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]
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}
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tags = ["worker"]
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lifecycle {
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# To update an Instance Template, Terraform should replace the existing resource
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create_before_destroy = true
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}
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}
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