diff --git a/lib/neutron b/lib/neutron
index b30c5c8..ab005a9 100644
--- a/lib/neutron
+++ b/lib/neutron
@@ -282,7 +282,7 @@
 function configure_neutron_nova_new {
     iniset $NOVA_CONF DEFAULT use_neutron True
     iniset $NOVA_CONF neutron auth_type "password"
-    iniset $NOVA_CONF neutron auth_url "$KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_AUTH_PORT/v3"
+    iniset $NOVA_CONF neutron auth_url "$KEYSTONE_SERVICE_URI/v3"
     iniset $NOVA_CONF neutron username neutron
     iniset $NOVA_CONF neutron password "$SERVICE_PASSWORD"
     iniset $NOVA_CONF neutron user_domain_name "Default"
diff --git a/lib/nova b/lib/nova
index 4c9f30f..a36a740 100644
--- a/lib/nova
+++ b/lib/nova
@@ -631,7 +631,7 @@
 function init_nova_service_user_conf {
     iniset $NOVA_CONF service_user send_service_user_token True
     iniset $NOVA_CONF service_user auth_type password
-    iniset $NOVA_CONF service_user auth_url "$KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_AUTH_PORT"
+    iniset $NOVA_CONF service_user auth_url "$KEYSTONE_SERVICE_URI"
     iniset $NOVA_CONF service_user username nova
     iniset $NOVA_CONF service_user password "$SERVICE_PASSWORD"
     iniset $NOVA_CONF service_user user_domain_name "$SERVICE_DOMAIN_NAME"
diff --git a/lib/placement b/lib/placement
index e7ffe33..4cc5cd8 100644
--- a/lib/placement
+++ b/lib/placement
@@ -100,7 +100,7 @@
 
 function configure_placement_nova_compute {
     iniset $NOVA_CONF placement auth_type "password"
-    iniset $NOVA_CONF placement auth_url "$KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_AUTH_PORT/v3"
+    iniset $NOVA_CONF placement auth_url "$KEYSTONE_SERVICE_URI/v3"
     iniset $NOVA_CONF placement username placement
     iniset $NOVA_CONF placement password "$SERVICE_PASSWORD"
     iniset $NOVA_CONF placement user_domain_name "$SERVICE_DOMAIN_NAME"
diff --git a/lib/tempest b/lib/tempest
index d95a9f5..25db046 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -17,7 +17,7 @@
 #   - ``PUBLIC_NETWORK_NAME``
 #   - ``VIRT_DRIVER``
 #   - ``LIBVIRT_TYPE``
-#   - ``KEYSTONE_SERVICE_PROTOCOL``, ``KEYSTONE_SERVICE_HOST`` from lib/keystone
+#   - ``KEYSTONE_SERVICE_URI``, ``KEYSTONE_SERVICE_URI_V3`` from lib/keystone
 #
 # Optional Dependencies:
 #
@@ -257,7 +257,7 @@
     iniset $TEMPEST_CONFIG volume build_timeout $BUILD_TIMEOUT
 
     # Identity
-    iniset $TEMPEST_CONFIG identity uri "$KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:5000/v2.0/"
+    iniset $TEMPEST_CONFIG identity uri "$KEYSTONE_SERVICE_URI/v2.0/"
     iniset $TEMPEST_CONFIG identity uri_v3 "$KEYSTONE_SERVICE_URI_V3"
     iniset $TEMPEST_CONFIG identity user_lockout_failure_attempts $KEYSTONE_LOCKOUT_FAILURE_ATTEMPTS
     iniset $TEMPEST_CONFIG identity user_lockout_duration $KEYSTONE_LOCKOUT_DURATION