title: How to increase vm.max_map_count?
body: <p>I'm trying to run Elastic search in an Ubuntu EC2 machine (t2.medium).</p>
  <p>But I'm getting the message:</p>
  <blockquote>
  <p>max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]</p>
  </blockquote>
  <p>How can I increase the <code>vm.max_map_count</code> value?</p>