Graph is not visible after changing time range

Grafana Graphite
1

I am having few charts based on graphite data source. I am having code that feeds graphite with data for the last 24 hours. Data feeding frequency is every 10 minutes.
If I use “Last 6 hours” - everything looks fine.

grafana_6_hr
grafana_6_hr1528×778 108 KB

But when I use bigger time range like “Last 8 hours” I get empty dashboard
grafana_8_hr
grafana_8_hr1599×730 51.9 KB

Any ideas?

2

First, I think you should check datasource.
Maybe connection from grafana to database is interrupt.
You also Click to Refresh button on vertical bar.

3

Please use query inspector to troubleshoot what data are returned. Maybe you have

What retientions have you configured in Graphite?

4

Thanks
The query inspector helped me to understand that I get a set of nulls from graphite when I try to look at data older than 6 hours.

So I have looked at graphite storage-schemas.conf and learned how to configure graphite it according to my needs.

See https://github.com/graphite-project/carbon/issues/379
5

What exactly did you change in storage-schemas.conf?