This explains the DBRP mapping. You do not need the V1 auth for Grafana, but you would need it to use the Hubitat Influx DB Logger app. If you want to use it with Grafana be sure to give write AND read access. ----> Influxdb2 and HE integration - #10 by jtp10181
To connect to the v1 API in Grafana I am using an Authorization header with the token. If you setup a v1 Auth (with read access) you should be able to use that with the "basic" toggle in Auth section instead of using a token if you want.
See screenshot below: (1) you have to add the custom HTTP Header EXACTLY as explained (case sensitive). I suggest building the Value in a text editor with the "Token" key word and the actual token so you can make sure it is exact, then paste it in.
Header: Authorization
Value: Token TOKEN_WITH_READ_ACCESS
(2) Database: This is the name you gave in the --db parameter when creating the DBRP mapping.
Then you just select the V1 data source in the editor, to get the query builder.