Telegraf-influxdb-grafana

hi friends,

datenbak has data, but grafana does not display. Affected host is visible in grafana.

InfluxDB:

when I manually insert data into the database, then I can see the data in Grafana.

What’s the problem?


Grafana v6.5.2 (742d165)
influxdb 1.7.9
platform: ubuntu 18.04.3 LTS