title: Elastic Search does not start
body: <p>When I start elastic search, I see "Killed" on the console and the process ends. I am unable to get the elastic search process to start. What am I missing?</p>
  
  <pre><code>:~/elasticsearch-5.5.2/bin$ ./elasticsearch
  Killed
  </code></pre>
  
  <p>If it is relevant, I am installing this on a VPS. I don't see any other error message - making it hard to debug.</p>