diff --git a/lib/cinder b/lib/cinder
index c4a49cd..c7ce0f5 100644
--- a/lib/cinder
+++ b/lib/cinder
@@ -283,6 +283,8 @@
 
     iniset $CINDER_CONF DEFAULT os_region_name "$REGION_NAME"
 
+    iniset $CINDER_CONF key_manager api_class cinder.keymgr.conf_key_mgr.ConfKeyManager
+
     if is_service_enabled c-vol && [[ -n "$CINDER_ENABLED_BACKENDS" ]]; then
         local enabled_backends=""
         local default_name=""
diff --git a/lib/nova b/lib/nova
index ca9a6c7..d3e8ce8 100644
--- a/lib/nova
+++ b/lib/nova
@@ -475,6 +475,8 @@
     iniset $NOVA_CONF DEFAULT metadata_listen "$NOVA_SERVICE_LISTEN_ADDRESS"
     iniset $NOVA_CONF DEFAULT s3_listen "$NOVA_SERVICE_LISTEN_ADDRESS"
 
+    iniset $NOVA_CONF key_manager api_class nova.keymgr.conf_key_mgr.ConfKeyManager
+
     if is_fedora || is_suse; then
         # nova defaults to /usr/local/bin, but fedora and suse pip like to
         # install things in /usr/bin