So this is how you can store logs (text data, no numbers) in InfluxDB and use Grafana to build some basic reporting screen.
Chapters:
0:00 Intro
3:46 Pushing logs from Node-Red
10:01 InfluxDB part
11:28 Variables in Grafana
15:55 Charts and Stats
18:30 Table view
23:46 Outro
...
https://www.youtube.com/watch?v=fHjSsgwyMLE