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# ingress-nginx启用header名称中下划线

## 描述

默认ingress-nginx 会过滤掉header中带下划线 '\_' 的header, header名称不建议使用下划线

## 方法一

修改代码，带下划线的修改为中横线'\_'

## 方法二

configmap中开启 `enable-underscores-in-headers` 参数, 默认 false

```yaml
controller:
  ...
  config:
    ...
    enable-underscores-in-headers: "true"
    ...
```

## 参考：

<https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/configmap/#enable-underscores-in-headers>