diff --git a/embed/examples/cluster/topology.example.yaml b/embed/examples/cluster/topology.example.yaml
index 0af84a658e..ce9953c783 100644
--- a/embed/examples/cluster/topology.example.yaml
+++ b/embed/examples/cluster/topology.example.yaml
@@ -248,6 +248,12 @@ tiflash_servers:
     data_dir: /data1/tidb-data/tiflash-9000
     # # TiFlash Server log file storage directory.
     log_dir: /data1/tidb-deploy/tiflash-9000/log
+    # # The following configs are used to overwrite the `server_configs.tiflash` values.
+    # config:
+    #   logger.level: info
+    # # The following configs are used to overwrite the `server_configs.tiflash-learner` values.
+    # learner_config:
+    #   log.level: info
   - host: 10.0.1.19
     # ssh_port: 22
     tcp_port: 9001