87 lines
2.4 KiB
HCL
87 lines
2.4 KiB
HCL
locals {
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official_images = []
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is_official_image = contains(local.official_images, var.os_image)
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}
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# Controller Instance DNS records
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resource "digitalocean_record" "controllers" {
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count = var.controller_count
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# DNS zone where record should be created
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domain = var.dns_zone
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# DNS record (will be prepended to domain)
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name = var.cluster_name
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type = "A"
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ttl = 300
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# IPv4 addresses of controllers
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value = digitalocean_droplet.controllers.*.ipv4_address[count.index]
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}
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# Discrete DNS records for each controller's private IPv4 for etcd usage
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resource "digitalocean_record" "etcds" {
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count = var.controller_count
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# DNS zone where record should be created
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domain = var.dns_zone
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# DNS record (will be prepended to domain)
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name = "${var.cluster_name}-etcd${count.index}"
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type = "A"
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ttl = 300
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# private IPv4 address for etcd
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value = digitalocean_droplet.controllers.*.ipv4_address_private[count.index]
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}
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# Controller droplet instances
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resource "digitalocean_droplet" "controllers" {
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count = var.controller_count
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name = "${var.cluster_name}-controller-${count.index}"
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region = var.region
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image = var.os_image
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size = var.controller_type
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# network
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vpc_uuid = digitalocean_vpc.network.id
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# TODO: Only official DigitalOcean images support IPv6
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ipv6 = false
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user_data = data.ct_config.controllers.*.rendered[count.index]
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ssh_keys = var.ssh_fingerprints
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tags = [
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digitalocean_tag.controllers.id,
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]
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lifecycle {
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ignore_changes = [user_data]
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}
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}
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# Tag to label controllers
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resource "digitalocean_tag" "controllers" {
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name = "${var.cluster_name}-controller"
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}
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# Flatcar Linux controllers
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data "ct_config" "controllers" {
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count = var.controller_count
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content = templatefile("${path.module}/butane/controller.yaml", {
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# Cannot use cyclic dependencies on controllers or their DNS records
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etcd_name = "etcd${count.index}"
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etcd_domain = "${var.cluster_name}-etcd${count.index}.${var.dns_zone}"
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# etcd0=https://cluster-etcd0.example.com,etcd1=https://cluster-etcd1.example.com,...
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etcd_initial_cluster = join(",", [
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for i in range(var.controller_count) : "etcd${i}=https://${var.cluster_name}-etcd${i}.${var.dns_zone}:2380"
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])
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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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})
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strict = true
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snippets = var.controller_snippets
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}
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