title: Elasticsearch dead but pid file exists
body: <p>While trying to run the elasticsearch, I am getting the below message:</p>
  
  <pre><code>elasticsearch dead but pid file exists. 
  </code></pre>
  
  <p>What could be the possible reason?</p>
  
  <p>Appreciate your help.</p>
  
  <p>Thanks,</p>
  
  <p>Chandan</p>