I had no idea about prometheus! I’ll have a look.
[edit]
My argument against Prometheus and why a native plugin is needed, is that Prometheus is yet another install and adds an additional (u and potentially unnecessary) step NetData → Prometheus → Telegraf → InfluxDB. It also yet another system to learn and maintain.
With a Telegraf plugin, the Telegraf agent can run on a remote server (in my case the InfluxDB server), and get the data directly.
Seems a much neater solution. As most of the work has already been done, it seems a good idea 