# DM 的使用 - 在数据源配置中引用规则

__*DM 使用*__
__*引用规则*__

```
mysql-instances:
  - source-id: "mysql-replica-01"
    block-allow-list:  "bw-rule-1"
    filter-rules: ["filter-rule-1"]
    route-rules: ["route-rule-1", "route-rule-2"]
  - source-id: "mysql-replica-02"
    block-allow-list:  "bw-rule-2"
    filter-rules: ["filter-rule-2"]
```
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在数据源配置中,引用黑白名单规则、操作过滤规则和路由规则。