Update main.tf

main.tf

+# creates public and private keypair
+resource "openstack_compute_keypair_v2" "test-keypair" {
+  name = "my-keypair"
+}
 
 # defines where floating ip will come from using variable from vars.tf
 resource "openstack_networking_floatingip_v2" "ohpc" {
@@ -10,7 +14,7 @@ resource "openstack_compute_instance_v2" "ohpc" {
   name            = "ohpc"
   image_name      = "${var.image}"
   flavor_name     = "${var.flavor}"
-  key_pair        = "${var.key_pair}"
+  key_pair        = "${openstack_compute_keypair_v2.test-keypair.name}"
   security_groups = ["default"]
 
 # defines the networks of the instance
@@ -67,20 +71,3 @@ resource "openstack_compute_floatingip_associate_v2" "ohpc" {
   }
 }
 
-# creates details for the instance using variables defined in vars.tf
-resource "openstack_compute_instance_v2" "ohpc" {
-
-  name            = "ohpc"
-  image_name      = "${var.image}"
-  flavor_name     = "${var.flavor}"
-  key_pair        = "${var.key_pair}"
-  security_groups = ["default"]
-
-# defines the networks of the instance
-  network {
-    name = "dmznet"
-  }
-  network {
-    name = "clusternet"
-  }
-}