--- src/backend/catalog/system_views.sql
+++ src/backend/catalog/system_views.sql
@@ -1099,3 +1099,7 @@

 REVOKE EXECUTE ON FUNCTION pg_ls_logdir() FROM public;
 REVOKE EXECUTE ON FUNCTION pg_ls_waldir() FROM public;
+GRANT EXECUTE ON FUNCTION pg_ls_logdir() TO pg_monitor;
+GRANT EXECUTE ON FUNCTION pg_ls_waldir() TO pg_monitor;
+
+GRANT pg_read_all_gucs TO pg_monitor;