title: oauth_proxy in front of kubernetes ingress showing error 403
body: <p>I am trying to secure my application exposed as LB using oauth2_proxy, I have created 2 ingress resources as required one for running the oauth2_proxy and another for accessing my application which is to be secured through authentication. Refer link [<a href="https://github.com/kubernetes/ingress-nginx/tree/master/docs/examples/auth/oauth-external-auth]" rel="nofollow noreferrer">https://github.com/kubernetes/ingress-nginx/tree/master/docs/examples/auth/oauth-external-auth]</a>. I have followed the exact process as mentioned in this link.</p>
  
  <p>When I hit my FQDN or Domain Name in browser it asks for authentication and upon successful authentication I get error </p>
  
  <pre><code>2019/07/25 14:09:56 oauthproxy.go:830: 10.244.2.76:36094 ("10.240.0.5") Cookie "_oauth2_proxy" not present
  2019/07/25 14:09:57 oauthproxy.go:788: 10.244.2.76:36088 ("10.240.0.5") Permission Denied: "" is unauthorized
  2019/07/25 14:09:57 oauthproxy.go:532: ErrorPage 403 Permission Denied Invalid Account
  </code></pre>
  
  <p>I expect to successfully redirected to my application service as authentication is successful. How can I achieve this?</p>