title: 502 proxy error, Oracle VM + Hortonworks sandbox
body: <p>I am new to Hadoop. Oracle VM with Hortonworks sandbox (OS Red Hat 64bit) with HDP 2.3.2 is up and running. When i am trying to test via <code>http://192.168.56.101</code> i get the 502 proxy error. </p>
  
  <p><code>Proxy Error
  The proxy server received an invalid response from an upstream server.
  The proxy server could not handle the request GET /.
  Reason: Error reading from remote server</code></p>
  
  <p>I have done the same installation and configuration on both my pc and mac and i get the same error. I have tried the test from IE and chrome as well.</p>