[GitHub] [apisix] AlinsRan commented on a diff in pull request #8901: docs: add the description of config.yaml support environment variables

["AlinsRan (via GitHub)" <gi...@apache.org>]

AlinsRan commented on code in PR #8901:
URL: https://github.com/apache/apisix/pull/8901#discussion_r1122768966


##########
docs/zh/latest/admin-api.md:
##########
@@ -65,6 +65,46 @@ deployment:
             port: 9180                  # Admin API 监听的 端口，必须使用与 node_listen 不同的端口。
 ```
 
+### 使用环境变量 {$using-environment-variables}
+
+要通过环境变量进行配置，可以使用 `${{VAR}}` 语法。例如：
+
+```yaml title="./conf/config.yaml"
+deployment:
+  admin:
+    admin_key:
+    - name: admin
+      key: ${{ADMIN_KEY}}
+      role: admin
+    allow_admin:
+    - 127.0.0.0/24
+    admin_listen:
+      ip: 0.0.0.0
+      port: 9180
+```
+
+然后在 `make init` 之前运行 `export ADMIN_KEY=$your_admin_key`.

Review Comment:
   Ping @juzhiyuan .



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