kjuulh/terraform-hcloud-kube-hetzner
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subnet dissociated

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Karim Naufal 2022-04-13 11:56:09 +02:00
parent b17f1569f2
commit 0f52a4e535
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4 changed files with 17 additions and 8 deletions
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6
agents.tf
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@ -12,11 +12,9 @@ module "agents" {
placement_group_id = var.placement_group_disable ? 0 : element(hcloud_placement_group.agent.*.id, ceil(each.value.index / 10))
location = each.value.location
server_type = each.value.server_type
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
ipv4_subnet_id = hcloud_network_subnet.agent[[for i, v in var.agent_nodepools : i if v.name == each.value.nodepool_name][0] + 1].id
# We leave some room so 100 eventual Hetzner LBs that can be created perfectly safely
# It leaves the subnet with 254 x 254 - 100 = 64416 IPs to use, so probably enough.
private_ipv4 = cidrhost(local.network_ipv4_subnets[[for i, v in var.agent_nodepools : i if v.name == each.value.nodepool_name][0] + length(var.control_plane_nodepools) + 1], each.value.index + 101)
private_ipv4 = cidrhost(hcloud_network_subnet.agent[[for i, v in var.agent_nodepools : i if v.name == each.value.nodepool_name][0] + 1].ip_range, each.value.index + 101)
labels = {
"provisioner" = "terraform",

4
control_planes.tf
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@ -12,11 +12,11 @@ module "control_planes" {
placement_group_id = var.placement_group_disable ? 0 : element(hcloud_placement_group.control_plane.*.id, ceil(each.value.index / 10))
location = each.value.location
server_type = each.value.server_type
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
ipv4_subnet_id = hcloud_network_subnet.control_plane[[for i, v in var.control_plane_nodepools : i if v.name == each.value.nodepool_name][0]].id
# We leave some room so 100 eventual Hetzner LBs that can be created perfectly safely
# It leaves the subnet with 254 x 254 - 100 = 64416 IPs to use, so probably enough.
private_ipv4 = cidrhost(local.network_ipv4_subnets[[for i, v in var.control_plane_nodepools : i if v.name == each.value.nodepool_name][0] + 1], each.value.index + 101)
private_ipv4 = cidrhost(hcloud_network_subnet.control_plane[[for i, v in var.control_plane_nodepools : i if v.name == each.value.nodepool_name][0]].ip_range, each.value.index + 101)
labels = {
"provisioner" = "terraform",

2
locals.tf
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@ -205,7 +205,7 @@ locals {
# The first two subnets are respectively the default subnet 10.0.0.0/16 use for potientially anything and 10.1.0.0/16 used for control plane nodes.
# the rest of the subnets are for agent nodes in each nodepools.
network_ipv4_subnets = [for index in range(length(var.control_plane_nodepools) + length(var.agent_nodepools) + 1) : cidrsubnet(local.network_ipv4_cidr, 8, index)]
network_ipv4_subnets = [for index in range(256) : cidrsubnet(local.network_ipv4_cidr, 8, index)]
# disable k3s extras
disable_extras = concat(["local-storage"], local.is_single_node_cluster ? [] : ["servicelb"], var.traefik_enabled ? [] : ["traefik"], var.metrics_server_enabled ? [] : ["metrics-server"])

13
main.tf
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@ -13,7 +13,18 @@ resource "hcloud_network" "k3s" {
ip_range = local.network_ipv4_cidr
}
resource "hcloud_network_subnet" "subnet" {
# We start from the end of the subnets cird array,
# as we would have fewer control plane nodepools, than angent ones.
resource "hcloud_network_subnet" "control_plane" {
count = length(local.control_plane_nodepools)
network_id = hcloud_network.k3s.id
type = "cloud"
network_zone = var.network_region
ip_range = local.network_ipv4_subnets[255 - count.index]
}
# Here we start at the beginning of the subnets cird array
resource "hcloud_network_subnet" "agent" {
count = length(local.network_ipv4_subnets)
network_id = hcloud_network.k3s.id
type = "cloud"