title: Clear old data in Grafana
body: <p>I'm using Prometheus and Grafana  for monitoring the servers.
  Grafana data were stored in <code>/home/user/data</code> folder.</p>
  
  <p>This folder occupied the majority of the file system .</p>
  
  <p>Need to remove the old data in Grafana <code>data</code> folder ( Data which is older than a month )</p>