I love grafana, but it’s a resource hog, and my machine isn’t powerful. Prometheus/node_exporter however is as lightweight as it can get.

So I made a little Python script that fetches the data from Prometheus and uses mathplotlib to generate a graph.

The dashboard calls that python script for every configured graph and embeds the image so it looks nice.

You can find the script in one of my other repos (Prometheus-renderer probably), but there are dozen similar ones: search github for Prometheus renderer and you’ll see

If there are other things unclear, please don’t hesitate to ask