title: Can I Install Liferay 6.1 EE in clustered Glassfish 2.1.1?
body: <p>I have a simple question about installation Liferay <strong>6.1</strong> EE into clustered environment in Glassfish <strong>2.1.1</strong> web application server, the question is can I do that , if yes what I need of configuration if not why , whats the problem ?</p>
  
  <p>I have already a stable production server clustered and running Liferay 5.2 EE with Glassfish 2.1.1 and I want just upgrade Liferay with current clustered environment .</p>
  
  <p>I want the answer quickly.
  Thanks in advance</p>