Prometheus Exporter documentation

I have a new router that runs OpenWRT and it provides a Prometheus (Node) Exporter (written in Lua ) NOTE The prometheus-node-exporter-lua Exporter package is a 4KB (!) script As I&rsquo;m sure is a common experience for others, it&rsquo;s great that there&rsquo;s an Exporter and a wealth of metrics exposed by it. One problem is that there&rsquo;s no guidance on how to use these metrics to…