@Neeraj Sabharwal As per Ambari REST API docs https://github.com/apache/ambari/blob/trunk/ambari-server/docs/api/v1/alert-definitions.md the definitions can be updated Is it possible to use REST API to update these thresholds ? If not, then once the cluster has been deployed should these properties be updated in /var/lib/ambari-server/resources/host_scripts/alert_disk_space.py and then ambari server restarted to push this update to all the agents ? I couldn't find a way to update these thresholds in Ambari UI ... View more