Update main.tf

main.tf

+resource "openstack_compute_keypair_v2" "ohpc-keypair" {
+  name = "my-keypair"
+}
+
 # creates dmznet
 resource "openstack_networking_network_v2" "dmznet" {
   name           = "dmznet"
@@ -53,7 +57,7 @@ depends_on = ["openstack_networking_subnet_v2.dmzsubnet"]
   name            = "ohpc"
   image_name      = "${var.image}"
   flavor_name     = "${var.flavor}"
-  key_pair        = "${var.key_pair}"
+  key_pair        = "${openstack_compute_keypair_v2.ohpc-keypair.name}"
   security_groups = ["default"]
 
 # defines the networks of the instance