All contaniers and k8s itself exposes lots of performance and status metrics. All these metrics are collected from a Prometheus container in the k8s cluster. This prometheus scraper don't store the metrics on any persistent storage, but expects to be configured to forward all metric information to a central prometheus server that will store all metrics persistently. The metrics can be visualized using Grafana. There is a Grafana deployed in the cluster that can be used to visualise the metrics collected by the scraping prometheus. Note that this prometheus will not store metrics for a long period and it will loos all data when the prometheus container is restarted.