oauth2_proxy stripping out content-length header? about oauth2-proxy HOT 6 CLOSED

---
apiVersion: v1
kind: Service
metadata:
  name: nginx-auth-proxy
  labels:
    app: nginx-auth-proxy
spec:
  type: ClusterIP
  ports:
    - port: 80
      targetPort: http
      protocol: TCP
      name: http
  selector:
    app: nginx-auth-proxy

---
apiVersion: apps/v1beta2
kind: Deployment
metadata:
  name: nginx-auth-proxy
  labels:
    app: nginx-auth-proxy
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx-auth-proxy
  template:
    metadata:
      labels:
        app: nginx-auth-proxy
    spec:
      containers:
        - name: nginx-auth-proxy
          image: nginx
          imagePullPolicy: IfNotPresent
          volumeMounts:
            - name: auth-proxy-config
              mountPath: /etc/nginx/conf.d/default.conf
              subPath: auth-proxy.conf
          ports:
            - containerPort: 80
              name: http
              protocol: TCP
      volumes:
        - name: auth-proxy-config
          configMap:
            name: nginx-auth-proxy-config

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-auth-proxy-config
data:
  auth-proxy.conf: |
    server {
      listen 80 default_server;
      server_name _;
      error_log /dev/stdout debug;
      access_log /dev/stdout;

      location /logs/oauth2 {
        proxy_pass       http://oauth2-proxy;
        proxy_set_header Host                    $host;
        proxy_set_header X-Real-IP               $remote_addr;
        proxy_set_header X-Scheme                $scheme;
        proxy_set_header X-Auth-Request-Redirect $request_uri;
      }
      location = /logs/oauth2/auth {
        proxy_pass       http://oauth2-proxy;
        proxy_set_header Host             $host;
        proxy_set_header X-Real-IP        $remote_addr;
        proxy_set_header X-Scheme         $scheme;
        # nginx auth_request includes headers but not body
        proxy_set_header Content-Length   "";
        proxy_pass_request_body           off;
      }

      location /logs {
        auth_request /logs/oauth2/auth;
        error_page 401 = /logs/oauth2/sign_in;

        # pass information via X-User and X-Email headers to backend,
        # requires running with --set-xauthrequest flag
        auth_request_set $user   $upstream_http_x_auth_request_user;
        auth_request_set $email  $upstream_http_x_auth_request_email;
        proxy_set_header X-User  $user;
        proxy_set_header X-Email $email;

        # if you enabled --cookie-refresh, this is needed for it to work with auth_request
        auth_request_set $auth_cookie $upstream_http_set_cookie;
        add_header Set-Cookie $auth_cookie;

        proxy_pass http://kibana:443;
      }
    }