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https://github.com/poseidon/typhoon
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084e8bea49
* Add `node_taints` variable to worker modules to set custom initial node taints on cloud platforms that support auto-scaling worker pools of heterogeneous nodes (i.e. AWS, Azure, GCP) * Worker pools could use custom `node_labels` to allowed workloads to select among differentiated nodes, while custom `node_taints` allows a worker pool's nodes to be tainted as special to prevent scheduling, except by workloads that explicitly tolerate the taint * Expose `daemonset_tolerations` in AWS, Azure, and GCP kubernetes cluster modules, to determine whether `kube-system` components should tolerate the custom taint (advanced use covered in docs) Rel: #550, #663 Closes #429
96 lines
2.3 KiB
HCL
96 lines
2.3 KiB
HCL
# Managed instance group of workers
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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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region = var.region
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version {
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name = "default"
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instance_template = google_compute_instance_template.worker.self_link
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}
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target_size = var.worker_count
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target_pools = [google_compute_target_pool.workers.self_link]
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named_port {
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name = "http"
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port = "80"
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}
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named_port {
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name = "https"
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port = "443"
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}
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}
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# Worker instance template
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resource "google_compute_instance_template" "worker" {
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name_prefix = "${var.name}-worker-"
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description = "Worker Instance template"
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machine_type = var.machine_type
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metadata = {
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user-data = data.ct_config.worker-ignition.rendered
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}
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scheduling {
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automatic_restart = var.preemptible ? false : true
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preemptible = var.preemptible
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}
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disk {
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auto_delete = true
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boot = true
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source_image = data.google_compute_image.fedora-coreos.self_link
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disk_size_gb = var.disk_size
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}
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network_interface {
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network = var.network
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# Ephemeral external IP
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access_config {
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}
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}
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can_ip_forward = true
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tags = ["worker", "${var.cluster_name}-worker", "${var.name}-worker"]
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guest_accelerator {
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count = var.accelerator_count
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type = var.accelerator_type
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}
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lifecycle {
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ignore_changes = [
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disk[0].source_image
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]
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# To update an Instance Template, Terraform should replace the existing resource
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create_before_destroy = true
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}
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}
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# Worker Ignition config
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data "ct_config" "worker-ignition" {
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content = data.template_file.worker-config.rendered
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strict = true
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snippets = var.snippets
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}
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# Worker Fedora CoreOS config
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data "template_file" "worker-config" {
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template = file("${path.module}/fcc/worker.yaml")
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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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cluster_dns_service_ip = cidrhost(var.service_cidr, 10)
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cluster_domain_suffix = var.cluster_domain_suffix
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node_labels = join(",", var.node_labels)
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node_taints = join(",", var.node_taints)
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}
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}
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