Hi.
Would you please open a new topic for this, if the following links do not help?
https://community.icinga.com/t/graphite-wont-graph-more-than-2-days-of-data/9220
https://community.icinga.com/t/graphite-resets-graphs-after-each-server-reboot/7646
(they contain a lot of information)
Greetings.