# 配置源站服务器

1. 在域名列表中点击一个域名。

   <figure><img src="/files/pFJud1Xo6OwwqT80AEmN" alt=""><figcaption></figcaption></figure>
2. 点击 **源配置**。您可以修改源服务器和上游端口。

   <div align="left"><figure><img src="/files/aMCStBUWkWhOHPoM4NxA" alt="" width="407"><figcaption></figcaption></figure></div>

   **源优先级**\
   \- 主源：基本源的地址是用于回源路由的源服务器的默认地址。\
   \- 备源：当主源服务器无法连接时，备源服务器将被激活。


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.console.zenlayer.com/welcome/cn/content-delivery-network/domain-management/cdn-settings/configure-an-origin-server.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.