title: Apache Spark and Livy cluster
body: <p><strong>Scenario :</strong></p>
  
  <ul>
  <li>I have spark cluster and <br><strong>I also want to use Livy</strong>. </li>
  <li>I am new about Livy </li>
  </ul>
  
  <p><strong>Problem :</strong></p>
  
  <ul>
  <li><p>I built
  my spark cluster by using docker swarm and <br>I will also create a
  service for Livy. </p></li>
  <li><p>Can Livy communicate with external spark master and
  send a job to external spark master? <br>If it is ok, which configuration
  need to be done? <br>Or Livy should be installed on spark master node?</p></li>
  </ul>