title: Is there a way to aggregate elastic search "day level indices" to single "month level index"?
body: <p>I have an elastic search and its capacity is at 85% and it will withstand only for the next few days as I keep indexing. </p>
  
  <p><strong>I don't want to delete any index as of now.</strong></p>
  
  <p>But is there a way to merge all day level index to a single month level index, for example I index data to ES everyday, can I make changes to older index so that it can represent each month.</p>
  
  <p>Is there a technique to do it? If so, will it provide me additional space?</p>
  
  <p>Your inputs will be really appreciated</p>