Each datasource had a configurable field update_method in the vitrage configuration file where you can set it to update via: none: don't update i.e. update only via the periodic changes pull: updates via polling the datasource every configurable [changes_interval] seconds push: updates via the datasource's push notifications Change-Id: Iab884a357ae7235e137600c95b0a23052cdee064 Closes-Bug: #1606834