diff --git a/devstack/lib/magnum b/devstack/lib/magnum
index a1a701daea..05f4053f2d 100644
--- a/devstack/lib/magnum
+++ b/devstack/lib/magnum
@@ -129,6 +129,10 @@ function create_magnum_conf {
 
     iniset $MAGNUM_CONF oslo_policy policy_file $MAGNUM_POLICY_JSON
 
+    iniset $MAGNUM_CONF keystone_authtoken admin_user magnum
+    iniset $MAGNUM_CONF keystone_authtoken admin_password $SERVICE_PASSWORD
+    iniset $MAGNUM_CONF keystone_authtoken admin_tenant_name $SERVICE_TENANT_NAME
+
     configure_auth_token_middleware $MAGNUM_CONF magnum $MAGNUM_AUTH_CACHE_DIR
 
     if is_fedora || is_suse; then