ingress-nginx 几个snippet的用法

1、nginx.ingress.kubernetes.io/configuration-snippet

在location中添加自定义配置
示例：

nginx.ingress.kubernetes.io/configuration-snippet: |
  more_set_headers "Request-Id: $req_id";

2、nginx.ingress.kubernetes.io/server-snippet

在server中添加自定义配置

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  annotations:
    nginx.ingress.kubernetes.io/server-snippet: |
        set $agentflag 0;
        if ($http_user_agent ~* "(Mobile)" ){
          set $agentflag 1;
        }
        if ( $agentflag = 1 ) {
          return 301 https://m.example.com;
        }