title: Zeppelin connection refused
body: <p>Zeppeling notebook is reporting an "java.net.ConnectException: Connection refused: connect". I tried a few simple python statements. Is this the notebook losing connection to the Web Server? I don't see a lot of chat about Zeppelin on SO. It's hard to troubleshoot.</p>
  
  <pre><code> INFO [2016-12-12 19:23:37,006] ({pool-1-thread-7} Paragraph.java[jobRun]:252) - run paragraph 20161212-191758_314125131 using null org.apache.zeppelin.interpreter.LazyOpenInterpreter@6bf78ad0
  ERROR [2016-12-12 19:23:38,003] ({pool-1-thread-7} Job.java[run]:189) - Job failed
  org.apache.zeppelin.interpreter.InterpreterException: org.apache.zeppelin.interpreter.InterpreterException: org.apache.thrift.transport.TTransportException: java.net.ConnectException: Connection refused: connect
      at org.apache.zeppelin.interpreter.remote.RemoteInterpreter.init(RemoteInterpreter.java:165)
      at org.apache.zeppelin.interpreter.remote.RemoteInterpreter.getFormType(RemoteInterpreter.java:328)
      at org.apache.zeppelin.interpreter.LazyOpenInterpreter.getFormType(LazyOpenInterprete
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/qc7CI.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qc7CI.jpg" alt="enter image description here"></a></p>