Merge pull request #151 from kube-hetzner/placement-group-fix
Placement group fix
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commit
4441b3096c
@ -9,7 +9,7 @@ module "agents" {
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private_key = var.private_key
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additional_public_keys = var.additional_public_keys
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firewall_ids = [hcloud_firewall.k3s.id]
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placement_group_id = hcloud_placement_group.k3s.id
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placement_group_id = var.placement_group_disable ? 0 : element(hcloud_placement_group.agent.*.id, ceil(each.value.index / 10))
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location = each.value.location
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server_type = each.value.server_type
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ipv4_subnet_id = hcloud_network_subnet.subnet[[for i, v in var.agent_nodepools : i if v.name == each.value.nodepool_name][0] + length(var.control_plane_nodepools) + 1].id
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@ -9,7 +9,7 @@ module "control_planes" {
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private_key = var.private_key
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additional_public_keys = var.additional_public_keys
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firewall_ids = [hcloud_firewall.k3s.id]
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placement_group_id = hcloud_placement_group.k3s.id
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placement_group_id = var.placement_group_disable ? 0 : element(hcloud_placement_group.control_plane.*.id, ceil(each.value.index / 10))
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location = each.value.location
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server_type = each.value.server_type
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ipv4_subnet_id = hcloud_network_subnet.subnet[[for i, v in var.control_plane_nodepools : i if v.name == each.value.nodepool_name][0] + 1].id
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@ -1,6 +1,9 @@
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locals {
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# if we are in a single cluster config, we use the default klipper lb instead of Hetzner LB
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is_single_node_cluster = sum(concat([for v in var.control_plane_nodepools : v.count], [0])) + sum(concat([for v in var.agent_nodepools : v.count], [0])) == 1
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total_node_count = sum(concat([for v in var.control_plane_nodepools : v.count], [0])) + sum(concat([for v in var.agent_nodepools : v.count], [0]))
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control_plane_count = sum(concat([for v in var.control_plane_nodepools : v.count], [0]))
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agent_count = sum(concat([for v in var.agent_nodepools : v.count], [0]))
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is_single_node_cluster = local.total_node_count == 1
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ssh_public_key = trimspace(file(var.public_key))
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# ssh_private_key is either the contents of var.private_key or null to use a ssh agent.
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ssh_private_key = var.private_key == null ? null : trimspace(file(var.private_key))
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16
main.tf
16
main.tf
@ -36,13 +36,16 @@ resource "hcloud_firewall" "k3s" {
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}
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}
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resource "hcloud_placement_group" "k3s" {
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name = var.cluster_name
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resource "hcloud_placement_group" "control_plane" {
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count = ceil(local.control_plane_count / 10)
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name = "${var.cluster_name}-control-plane-${count.index + 1}"
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type = "spread"
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labels = {
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"provisioner" = "terraform",
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"engine" = "k3s"
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}
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resource "hcloud_placement_group" "agent" {
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count = ceil(local.agent_count / 10)
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name = "${var.cluster_name}-agent-${count.index + 1}"
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type = "spread"
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}
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data "hcloud_load_balancer" "traefik" {
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@ -71,9 +74,10 @@ resource "null_resource" "destroy_traefik_loadbalancer" {
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local_sensitive_file.kubeconfig,
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null_resource.control_planes[0],
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hcloud_network_subnet.subnet,
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hcloud_placement_group.control_plane,
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hcloud_placement_group.agent,
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hcloud_network.k3s,
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hcloud_firewall.k3s,
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hcloud_placement_group.k3s,
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hcloud_ssh_key.k3s
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]
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}
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@ -84,9 +84,8 @@ agent_nodepools = [
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}
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]
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# That will depend on how much load you want it to handle, see https://www.hetzner.com/cloud/load-balancer
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# LB location and type, the latter will depend on how much load you want it to handle, see https://www.hetzner.com/cloud/load-balancer
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load_balancer_type = "lb11"
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load_balancer_location = "fsn1"
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### The following values are fully optional
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@ -147,3 +146,7 @@ load_balancer_location = "fsn1"
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# If you want to configure additional Arguments for traefik, enter them here as a list and in the form of traefik CLI arguments; see https://doc.traefik.io/traefik/reference/static-configuration/cli/
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# Example: traefik_additional_options = ["--log.level=DEBUG", "--tracing=true"]
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# traefik_additional_options = []
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# If you want to disable the automatic use of placement group "spread". See https://docs.hetzner.com/cloud/placement-groups/overview/
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# That may be useful if you need to deploy more than 500 nodes! The default is "false".
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# placement_group_disable = true
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@ -138,5 +138,10 @@ variable "cluster_name" {
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variable "traefik_additional_options" {
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type = list(string)
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default = []
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}
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variable "placement_group_disable" {
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type = bool
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default = false
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description = "Whether to disable placement groups"
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}
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