Make every important setting of the k8s-cluster configurable
This change makes all the settings configurable. The only part which still lacks some flexibility is the location, though I really don't need to run a k8s-cluster over multiple datacenters and regions! - At least right now ;-)
This commit is contained in:
89
main.tf
89
main.tf
@@ -5,19 +5,23 @@ resource "hcloud_ssh_key" "this" {
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}
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resource "hcloud_primary_ip" "k8s_ipv4" {
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name = "k8s_primary_ipv4"
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datacenter = "fsn1-dc14"
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count = var.k8s_server_count < 1 ? 1 : var.k8s_server_count
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name = "k8s_primary_ipv4_${count.index}"
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datacenter = var.k8s_ip_datacenter
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type = "ipv4"
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assignee_type = "server"
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auto_delete = false # change to true and apply before deleting!
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auto_delete = !var.k8s_test_installation
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}
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resource "hcloud_primary_ip" "k8s_ipv6" {
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name = "k8s_primary_ipv6"
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datacenter = "fsn1-dc14"
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count = var.k8s_server_count < 1 ? 1 : var.k8s_server_count
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name = "k8s_primary_ipv6_${count.index}"
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datacenter = var.k8s_ip_datacenter
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type = "ipv6"
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assignee_type = "server"
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auto_delete = false # change to true and apply before deleting!
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auto_delete = !var.k8s_test_installation
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}
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data "external" "my_ip" {
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@@ -33,17 +37,16 @@ module "k8s" {
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name = "cluster1"
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ssh_keys = [for o in hcloud_ssh_key.this : o.id]
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# Ensure a odd number of definitions, since only that make any sense
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servers = [{
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ipv4_id = hcloud_primary_ip.k8s_ipv4.id
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ipv6_id = hcloud_primary_ip.k8s_ipv6.id
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type = "cax11"
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location = "fsn1"
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servers = [for n in range(var.k8s_server_count) : {
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ipv4_id = hcloud_primary_ip.k8s_ipv4[n].id
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ipv6_id = hcloud_primary_ip.k8s_ipv6[n].id
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type = var.k8s_server_type
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location = var.k8s_location
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}]
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agents = [{
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type = "cax11"
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location = "fsn1"
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count = 1
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type = var.k8s_agent_type
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location = var.k8s_location
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count = var.k8s_agent_count
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}]
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kubernetes_exposed_ips = var.expose_kubernetes_and_ssh_ports ? values(data.external.my_ip.result) : []
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ssh_exposed_ips = var.expose_kubernetes_and_ssh_ports ? values(data.external.my_ip.result) : []
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@@ -71,19 +74,19 @@ locals {
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"goperte.de" = {
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zone_ttl = 900
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records = [
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "@", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "*", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "@", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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{ name = "*", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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]
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},
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"nehrke.info" = {
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zone_ttl = 900
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records = [
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "@", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "*", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "@", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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{ name = "*", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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{ name = "@", ttl = 86400, type = "MX", value = "1 smtp.google.com." },
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{ name = "@", ttl = 86400, type = "TXT", value = "v=spf1 include:_spf.google.com a mx ~all" },
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{ name = "_dmarc", ttl = 86400, type = "TXT", value = "v=DMARC1; p=none;" },
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@@ -93,10 +96,10 @@ locals {
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"sozpaedil.net" = {
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zone_ttl = 900
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records = [
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "@", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "*", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "@", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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{ name = "*", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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{ name = "@", ttl = 86400, type = "MX", value = "1 smtp.google.com." },
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{ name = "@", ttl = 86400, type = "TXT", value = "v=spf1 include:_spf.google.com a mx ~all" },
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{ name = "_dmarc", ttl = 86400, type = "TXT", value = "v=DMARC1; p=none;" },
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@@ -106,37 +109,37 @@ locals {
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"tovot.de" = {
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zone_ttl = 900
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records = [
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "@", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "*", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "@", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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{ name = "*", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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]
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},
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"tovot.net" = {
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zone_ttl = 900
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records = [
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "@", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "*", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "@", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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{ name = "*", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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]
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},
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"tovot.org" = {
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zone_ttl = 900
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records = [
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "@", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "*", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "@", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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{ name = "*", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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]
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},
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"xn--alleingnger-r8a.de" = {
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zone_ttl = 900
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records = [
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4.ip_address },
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{ name = "@", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "*", type = "AAAA", value = hcloud_primary_ip.k8s_ipv6.ip_address },
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{ name = "@", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "*", type = "A", value = hcloud_primary_ip.k8s_ipv4[0].ip_address },
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{ name = "@", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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{ name = "*", type = "AAAA", value = "${hcloud_primary_ip.k8s_ipv6[0].ip_address}1" },
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]
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},
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}
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47
variables.tf
47
variables.tf
@@ -25,3 +25,50 @@ variable "ssh_keys" {
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type = map(string)
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}
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variable "k8s_test_installation" {
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default = false
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description = <<EOF
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When this is set to true we configure primary-ips to not be deleted automatically!
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This allows us to reuse the same IP for multiple create/destroy cycles.
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As soon as the test-phase is over this should be false.
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EOF
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}
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# Right now this only supports 1 location, but that's okay for me!
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variable "k8s_location" {
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type = string
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description = <<EOF
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This is the location where I host the k8s-cluster.
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An overview of possible locations can be found at: https://docs.hetzner.com/cloud/general/locations/
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EOF
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}
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variable "k8s_ip_datacenter" {
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type = string
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description = <<EOF
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This is the datacenter where the public IPs of the k8s-cluster belong to.
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An overview of possible locations can be found at: https://docs.hetzner.com/cloud/general/locations/
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Note, that the k8s_ip_datacenter has to match the k8s_location!
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EOF
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}
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variable "k8s_server_count" {
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type = number
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default = 3
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description = "Number of k8s-server nodes. This should always be an odd number."
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}
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variable "k8s_server_type" {
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type = string
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default = "cax11"
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}
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variable "k8s_agent_count" {
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type = number
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default = 3
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}
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variable "k8s_agent_type" {
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type = string
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default = "cax11"
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}
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