title: What's the use of "keyfile" in Glassfish config folder?
body: <p>A really newbie question: </p>
  
  <p>under glassfish->domains->domain1->config folder, there's a file named "keyfile", what is that file for? I know cacert.jks and keystore.jks are used to store certificates. But what's keyfile? does it contain all the certificate private keys?</p>
  
  <p>I am using Glassfish 3.1.</p>
  
  <p>thanks </p>