There is an Prometheus exporter that is on by default that enables you to configure a Prometheus compatible scraper to grab data from the various Vitess components. All Vitess components with web UI’s export their metrics on their web UI port on /metrics. 


If your Vitess configuration includes running the Vitess or PlanetScaleDB Operator on Kubernetes, then you can have Prometheus or a Prometheus compatible agent running in your Kubernetes cluster. This would then scrape the metrics from Vitess automatically, as it would be run on the ports advertised and on our standard /metrics page. With the PlanetScaleDB Operator for Kubernetes, this is done for you automatically.


You can read more about getting the metrics into Prometheus here.