diff --git a/ansible/roles/keystone/tasks/register.yml b/ansible/roles/keystone/tasks/register.yml
index 2ba3b44a17..51cc531799 100644
--- a/ansible/roles/keystone/tasks/register.yml
+++ b/ansible/roles/keystone/tasks/register.yml
@@ -28,4 +28,5 @@
       auth: "{{ openstack_keystone_auth }}"
       endpoint_type: "{{ openstack_interface }}"
       cacert: "{{ openstack_cacert }}"
+      region_name: "{{ openstack_region_name }}"
   run_once: True
diff --git a/ansible/roles/magnum/tasks/register.yml b/ansible/roles/magnum/tasks/register.yml
index 2956bb0df4..30352e149c 100644
--- a/ansible/roles/magnum/tasks/register.yml
+++ b/ansible/roles/magnum/tasks/register.yml
@@ -17,6 +17,7 @@
       auth: "{{ openstack_magnum_auth }}"
       endpoint_type: "{{ openstack_interface }}"
       cacert: "{{ openstack_cacert }}"
+      region_name: "{{ openstack_region_name }}"
   register: trustee_domain
   run_once: True
 
@@ -31,6 +32,7 @@
       auth: "{{ openstack_magnum_auth }}"
       endpoint_type: "{{ openstack_interface }}"
       cacert: "{{ openstack_cacert }}"
+      region_name: "{{ openstack_region_name }}"
   run_once: True
 
 - name: Creating Magnum trustee user role
@@ -44,4 +46,5 @@
       auth: "{{ openstack_magnum_auth }}"
       endpoint_type: "{{ openstack_interface }}"
       cacert: "{{ openstack_cacert }}"
+      region_name: "{{ openstack_region_name }}"
   run_once: True
diff --git a/ansible/roles/octavia/tasks/register.yml b/ansible/roles/octavia/tasks/register.yml
index a2e75d4698..d96de5656d 100644
--- a/ansible/roles/octavia/tasks/register.yml
+++ b/ansible/roles/octavia/tasks/register.yml
@@ -18,6 +18,7 @@
       auth: "{{ openstack_octavia_auth }}"
       endpoint_type: "{{ openstack_interface }}"
       cacert: "{{ openstack_cacert }}"
+      region_name: "{{ openstack_region_name }}"
   run_once: True
   when: octavia_service_auth_project != 'service'
 
@@ -30,5 +31,6 @@
       auth: "{{ openstack_octavia_auth }}"
       endpoint_type: "{{ openstack_interface }}"
       cacert: "{{ openstack_cacert }}"
+      region_name: "{{ openstack_region_name }}"
   run_once: True
   with_items: "{{ octavia_required_roles }}"
diff --git a/ansible/roles/vitrage/tasks/register.yml b/ansible/roles/vitrage/tasks/register.yml
index 936e8c6c0f..bb8151133c 100644
--- a/ansible/roles/vitrage/tasks/register.yml
+++ b/ansible/roles/vitrage/tasks/register.yml
@@ -18,4 +18,5 @@
       auth: "{{ openstack_vitrage_auth }}"
       endpoint_type: "{{ openstack_interface }}"
       cacert: "{{ openstack_cacert }}"
+      region_name: "{{ openstack_region_name }}"
   run_once: True