Change master nodes to control nodes.

inventory.tf

@@ -3,7 +3,7 @@ resource "local_file" "k8s_file" {
     {
       bastion_ssh_user_name = var.bastion_ssh_user_name
       k8s_bastion_ip        = openstack_networking_floatingip_v2.bastion_fip.address
-      k8s_master_ip         = openstack_compute_instance_v2.master_nodes.*.access_ip_v4
+      k8s_control_ip         = openstack_compute_instance_v2.control_nodes.*.access_ip_v4
       k8s_worker_ip         = openstack_compute_instance_v2.worker_nodes.*.access_ip_v4
     }
 

output.tf

@@ -2,8 +2,8 @@ output "bastion_external_ip" {
   value = openstack_networking_floatingip_v2.bastion_fip.address
 }
 
-output "master_instance_ip" {
-  value = openstack_compute_instance_v2.master_nodes[*].access_ip_v4
+output "control_instance_ip" {
+  value = openstack_compute_instance_v2.control_nodes[*].access_ip_v4
 }
 
 output "worker_instance_ip" {