I think I’ve found the solution to my problem
This is a version issue with InfluxDB.
With Ubuntu 20.04, the repo “InfluxData - Package Repository” does not contain a definition for InfluxDB. So I use the version provided in the official Ubuntu repo, which is the 1.6.4 version.
If I use the repo “InfluxData - Package Repository” which corresponds to the previous version of ubuntu, I can install the version 1.8.0 of influxdb.
Once this version deployed, I have all the values in my dashboard
