2dc: add config descriptions (#7796)

pingcap · Mar 9, 2022 · d41cd90 · d41cd90
1 parent a9ae1fb
commit d41cd90
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diff --git a/two-data-centers-in-one-city-deployment.md b/two-data-centers-in-one-city-deployment.md
@@ -155,6 +155,14 @@ cat rule.json
 ]
 ```
 
+To use the configurations in `rule.json`, override the existing configurations by running the following command:
+
+{{< copyable "shell-regular" >}}
+
+```bash
+pd-ctl config placement-rules rule-bundle save --in="rule.json"
+```
+
 ### Enable the DR Auto-Sync mode
 
 The replication mode is controlled by PD. When deploying a cluster, you can configure the replication mode in the PD configuration file. For example: