Update main.tf

main.tf

+resource "openstack_compute_keypair_v2" "test-keypair" {
+  name       = "my-keypair"
+  public_key = "${file("~/.ssh/id_rsa.pub")}"
+}
 
 #local variable for ssh connect to ohpc
 locals {
   connection = {
     host        = "${format("164.111.161.%s", element(split(".", openstack_networking_floatingip_v2.ip_pool.address),3))}"
     user        = "centos"
-    private_key = "${file(var.ssh_key)}"
+    private_key = "${file("~/.ssh/id_rsa")}"
   }
 }
 
@@ -63,7 +67,7 @@ depends_on = ["openstack_networking_subnet_v2.dmzsubnet"]
   name            = "ohpc"
   image_name      = "${var.image}"
   flavor_name     = "${var.flavor}"
-  key_pair        = "${file(var.ssh_key)}"
+  key_pair        = "${openstack_compute_keypair_v2.openstack.key_name}"
   security_groups = ["default"]
 
 # defines the networks of the instance
@@ -84,7 +88,7 @@ resource "openstack_compute_floatingip_associate_v2" "ohpc" {
     connection {
       host    =  "${format("164.111.161.%s", element(split(".", openstack_networking_floatingip_v2.ip_pool.address),3))}"
       user        = "centos"
-      private_key = "${file(var.ssh_key)}"
+      private_key = "${file("~/.ssh/id_rsa")}"
     }
 
     inline = [
@@ -104,7 +108,7 @@ resource "openstack_compute_floatingip_associate_v2" "ohpc" {
       host    =  "${format("164.111.161.%s", element(split(".", openstack_networking_floatingip_v2.ip_pool.address),3))}"
       #host        = "${openstack_networking_floatingip_v2.terraform.address}"
       user        = "centos"
-      private_key = "${file(var.ssh_key)}"
+      private_key = "${file("~/.ssh/id_rsa")}"
     }
   }
 
@@ -113,7 +117,7 @@ resource "openstack_compute_floatingip_associate_v2" "ohpc" {
       host    =  "${format("164.111.161.%s", element(split(".", openstack_networking_floatingip_v2.ip_pool.address),3))}"
       #host        = "${openstack_networking_floatingip_v2.ohpc.address}"
       user        = "centos"
-      private_key = "${file(var.ssh_key)}"
+      private_key = "${file("~/.ssh/id_rsa")}"
     }
     inline = [
       "sudo ansible-playbook -c local -i /CRI_XCBC/hosts -l `hostname -s` /CRI_XCBC/site.yaml -b"