[BUG] <title>我使用的centos9 虚拟机 本地部署的2.6.1 然后用咱们给的例子 启动后 -119错误

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Current Behavior

{2 items
"code":int-119
"message":string"Can not find healthy upstream url, please check your configuration!"
}
都是例子的接口/http/hello
### shengyu getway proxy hello
POST http://192.168.43.143:9195/http/shenyu/client/hello
Accept: application/json
Content-Type: application/json

### Expected Behavior

_No response_

### Steps To Reproduce

_No response_

### Environment

```markdown
ShenYu version(s):
```

### Debug logs

_No response_

### Anything else?

_No response_

Start by reproducing the reported POST request to the /http/hello example on the local CentOS deployment, then inspect the upstream and health-check configuration that produces error -119. The issue lacks a ShenYu version, reproduction steps, and debug logs; done should include a confirmed cause and a verified fix or configuration guidance for the example endpoint.

Written by the indexing model from the issue text.