Hi there, by the info provided in project description, I suggest you not to query directy to MySQL from Grafana. Instead you could take regular spanshot of main stats and save it on InfluxDB (or similar) , then retrieve data from there. If you already have a running instance of grafana , I could prepare a simple dashboard of 3 stats you need, from MySQL , just as starting task , I bid for this now. Then we could move to more complete solution
Thanks