add cdc server topylogy example (#2466)

* Update topology.example.yaml

* Update topology.example.yaml

embed/examples/cluster/topology.example.yaml

@@ -300,6 +300,32 @@ kvcdc_servers:
     data_dir: "/data1/tidb-data/tikv-cdc-8600"
     log_dir: "/data1/tidb-deploy/tikv-cdc-8600/log"
 
+# # Server configs are used to specify the configuration of TiCDC Servers.  
+#cdc_servers:
+#  - host: 10.0.1.20
+    # # SSH port of the server.
+    # ssh_port: 22
+    # # TiCDC Server communication port.
+    # port: 8300
+    # # TiCDC Server data storage directory.
+    # data_dir: "/data1/tidb-deploy/cdc-8300"
+    # # TiCDC Server log file storage directory.
+    # log_dir: "/data1/tidb-deploy/cdc-8300/log"
+    # # TiCDC Server deployment file, startup script, configuration file storage directory.
+    # deploy_dir: "/data1/tidb-deploy/cdc-8300"
+    # gc-ttl: 86400 # 24h
+    # tz: "System"
+    # numa_node: "0,1"
+    # config:
+    #   log.level: warn
+    # ticdc_cluster_id: "default"
+  # - host: 10.0.1.21
+    # ssh_port: 22
+    # port: 8301
+    # data_dir: "/data2/tidb-deploy/cdc-8301"
+    # log_dir: "/data2/tidb-deploy/cdc-8301/log"
+    # deploy_dir: "/data2/tidb-deploy/cdc-8301"
+
 # # Server configs are used to specify the configuration of TiDB Dashboard Servers. Available from v6.5.0
 # tidb_dashboard_servers:
   # # The ip address of the PD Server.
@@ -315,9 +341,8 @@ kvcdc_servers:
     # # PD Server log file storage directory.
     # log_dir: "/tidb-deploy/tidb-dashboard-12333/log"
     # # numa node bindings.
-    # numa_node: "0,1"
-
-
+    # numa_node: "0,1"   
+
 # # Server configs are used to specify the configuration of Prometheus Server.  
 monitoring_servers:
   # # The ip address of the Monitoring Server.