Provide dns record for each node and install argocd in high availability from 3 nodes onwards

terraform/modules/k8s-cluster/helm.tf

@@ -17,6 +17,21 @@ resource "null_resource" "install_setup" {
   depends_on = [null_resource.join_nodes, hcloud_server.manager]
 }
 
+resource "inwx_nameserver_record" "argocd_a" {
+  domain  = var.domain
+  name    = format("%s.%s", "argocd", local.kube_api_server_domain)
+  content = var.create_loadbalancer ? hcloud_load_balancer.kubernetes[0].ipv4 : hcloud_primary_ip.ipv4_manager_address[0].ip_address
+  type    = "A"
+  ttl     = 3600
+}
+resource "inwx_nameserver_record" "argocd_aaaa" {
+  domain  = var.domain
+  name    = format("%s.%s", "argocd", local.kube_api_server_domain)
+  content = var.create_loadbalancer ? hcloud_load_balancer.kubernetes[0].ipv6 : hcloud_primary_ip.ipv6_manager_address[0].ip_address
+  type    = "AAAA"
+  ttl     = 3600
+}
+
 resource "null_resource" "install_argocd_single" {
   count = var.number_nodes < 3 ? 1 : 0
 

terraform/modules/k8s-cluster/inwx.tf

@@ -1,29 +0,0 @@
-resource "inwx_nameserver_record" "kube_api_server_a" {
-  domain  = var.domain
-  name    = local.kube_api_server_domain
-  content = var.create_loadbalancer ? hcloud_load_balancer.kubernetes[0].ipv4 : hcloud_primary_ip.ipv4_manager_address[0].ip_address
-  type    = "A"
-  ttl     = 3600
-}
-resource "inwx_nameserver_record" "kube_api_server_aaaa" {
-  domain  = var.domain
-  name    = local.kube_api_server_domain
-  content = var.create_loadbalancer ? hcloud_load_balancer.kubernetes[0].ipv6 : hcloud_primary_ip.ipv6_manager_address[0].ip_address
-  type    = "AAAA"
-  ttl     = 3600
-}
-
-resource "inwx_nameserver_record" "argocd_a" {
-  domain  = var.domain
-  name    = format("%s.%s", "argocd", local.kube_api_server_domain)
-  content = var.create_loadbalancer ? hcloud_load_balancer.kubernetes[0].ipv4 : hcloud_primary_ip.ipv4_manager_address[0].ip_address
-  type    = "A"
-  ttl     = 3600
-}
-resource "inwx_nameserver_record" "argocd_aaaa" {
-  domain  = var.domain
-  name    = format("%s.%s", "argocd", local.kube_api_server_domain)
-  content = var.create_loadbalancer ? hcloud_load_balancer.kubernetes[0].ipv6 : hcloud_primary_ip.ipv6_manager_address[0].ip_address
-  type    = "AAAA"
-  ttl     = 3600
-}

terraform/modules/k8s-cluster/main.tf

@@ -35,3 +35,17 @@ resource "hcloud_load_balancer_target" "nodes" {
   use_private_ip   = true
 }
 
+resource "inwx_nameserver_record" "kube_api_server_a" {
+  domain  = var.domain
+  name    = local.kube_api_server_domain
+  content = var.create_loadbalancer ? hcloud_load_balancer.kubernetes[0].ipv4 : hcloud_primary_ip.ipv4_manager_address[0].ip_address
+  type    = "A"
+  ttl     = 3600
+}
+resource "inwx_nameserver_record" "kube_api_server_aaaa" {
+  domain  = var.domain
+  name    = local.kube_api_server_domain
+  content = var.create_loadbalancer ? hcloud_load_balancer.kubernetes[0].ipv6 : hcloud_primary_ip.ipv6_manager_address[0].ip_address
+  type    = "AAAA"
+  ttl     = 3600
+}

terraform/modules/k8s-cluster/manager-node.tf

@@ -1,3 +1,13 @@
+resource "inwx_nameserver_record" "manager_aaaa" {
+  count = var.number_nodes
+
+  domain  = var.domain
+  name    = format("%s-%d.%s", "node", count.index, local.kube_api_server_domain)
+  content = hcloud_primary_ip.ipv6_manager_address[count.index].ip_address
+  type    = "AAAA"
+  ttl     = 3600
+}
+
 resource "hcloud_primary_ip" "ipv4_manager_address" {
   count = var.create_loadbalancer ? 0 : var.number_nodes
 
@@ -9,7 +19,7 @@ resource "hcloud_primary_ip" "ipv4_manager_address" {
 }
 
 resource "hcloud_primary_ip" "ipv6_manager_address" {
-  count = var.create_loadbalancer ? 0 : var.number_nodes
+  count = var.number_nodes
 
   name          = format("%s_%s_%s_%d", "k8s", var.cluster_role, "ipv6", count.index)
   datacenter    = element(var.locations.*.datacenter_name, count.index)
@@ -37,8 +47,8 @@ resource "hcloud_server" "manager" {
   public_net {
     ipv4_enabled = var.create_loadbalancer ? false : true
     ipv4         = var.create_loadbalancer ? null : hcloud_primary_ip.ipv4_manager_address[count.index].id
-    ipv6_enabled = var.create_loadbalancer ? false : true
-    ipv6         = var.create_loadbalancer ? null : hcloud_primary_ip.ipv6_manager_address[count.index].id
+    ipv6_enabled = true
+    ipv6         = hcloud_primary_ip.ipv6_manager_address[count.index].id
   }
   ignore_remote_firewall_ids = false
   keep_disk                  = false

terraform/modules/k8s-cluster/worker-node.tf

@@ -1,3 +1,23 @@
+resource "inwx_nameserver_record" "worker_aaaa" {
+  count = var.number_worker_nodes
+
+  domain  = var.domain
+  name    = format("%s-%d.%s", "node", count.index, local.kube_api_server_domain)
+  content = hcloud_primary_ip.ipv6_worker_address[count.index].ip_address
+  type    = "AAAA"
+  ttl     = 3600
+}
+
+resource "hcloud_primary_ip" "ipv6_worker_address" {
+  count = var.number_worker_nodes
+
+  name          = format("%s_%s_%s_%d", "k8s", var.cluster_role, "ipv6", count.index)
+  datacenter    = element(var.locations.*.datacenter_name, count.index)
+  type          = "ipv6"
+  assignee_type = "server"
+  auto_delete   = false
+}
+
 resource "hcloud_server_network" "worker_private" {
   count = var.number_worker_nodes
 
@@ -16,7 +36,8 @@ resource "hcloud_server" "worker" {
   location                = element(var.locations.*.name, count.index)
   public_net {
     ipv4_enabled = false
-    ipv6_enabled = false
+    ipv6_enabled = true
+    ipv6         = hcloud_primary_ip.ipv6_worker_address[count.index].id
   }
   ignore_remote_firewall_ids = false
   keep_disk                  = false