title: How to update an index/indice in Elasticsearch?
body: <p>I've already got my index (<code>response_summary</code>) created using <code>logstash</code>, which puts data into the index from a MySQL database. </p>
  
  <p>My concern here is, how will I be able to update the index manually whenever a new set of records are being added to the database without deleting and recreating the index yet again.</p>
  
  <p>Or is there a way that it can be done automatically, whenever a db change is done? </p>
  
  <p>Any help could be appreciated.</p>