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f3730b2bfa
* Introduce the ability to support Container Linux Config "snippets" for controllers and workers on cloud platforms. This allows end-users to customize hosts by providing Container Linux configs that are additively merged into the base configs defined by Typhoon. Config snippets are validated, merged, and show any errors during `terraform plan` * Example uses include adding systemd units, network configs, mounts, files, raid arrays, or other disk provisioning features provided by Container Linux Configs (using Ignition low-level) * Requires terraform-provider-ct v0.2.1 plugin
79 lines
2.2 KiB
HCL
79 lines
2.2 KiB
HCL
# Regional managed instance group maintains a homogeneous set of workers that
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# span the zones in the region.
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resource "google_compute_region_instance_group_manager" "workers" {
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name = "${var.name}-worker-group"
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description = "Compute instance group of ${var.name} workers"
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# instance name prefix for instances in the group
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base_instance_name = "${var.name}-worker"
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instance_template = "${google_compute_instance_template.worker.self_link}"
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region = "${var.region}"
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target_size = "${var.count}"
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# target pool to which instances in the group should be added
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target_pools = [
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"${google_compute_target_pool.workers.self_link}",
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]
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}
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# Worker Container Linux Config
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data "template_file" "worker_config" {
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template = "${file("${path.module}/cl/worker.yaml.tmpl")}"
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vars = {
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kubeconfig = "${indent(10, var.kubeconfig)}"
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ssh_authorized_key = "${var.ssh_authorized_key}"
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k8s_dns_service_ip = "${cidrhost(var.service_cidr, 10)}"
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cluster_domain_suffix = "${var.cluster_domain_suffix}"
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}
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}
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data "ct_config" "worker_ign" {
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content = "${data.template_file.worker_config.rendered}"
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pretty_print = false
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snippets = ["${var.clc_snippets}"]
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}
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resource "google_compute_instance_template" "worker" {
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name_prefix = "${var.name}-worker-"
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description = "Worker Instance template"
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machine_type = "${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 = "${var.preemptible}"
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}
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disk {
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auto_delete = true
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boot = true
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source_image = "${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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tags = ["worker", "${var.cluster_name}-worker", "${var.name}-worker"]
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guest_accelerator {
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count = "${var.accelerator_count}"
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type = "${var.accelerator_type}"
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}
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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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