A segment of historical data, a month or older, has disappeared from charts and raw data.
The agents collecting this data were operational during this time, there were no exhausted tablespaces in the Foglight repository database, there were no modifications to the retention policies, there are no rollup errors in the logs.
This issue has been identified as FGL-13549.
STATUS: Fixed in 5.6.4 release
Disable any further purge operations until the bug is fixed. This can be done by adding the following flag when you start up Foglight:
It might be better to define this flag in FMS_HOME/config/foglight.config (or server.config for later versions) so that the FMS always starts up with this option, and remove it when the bug has been fixed.