Monitoring & Logging

You can have one (and only one) metrics collector per cluster.

Metrics Server

The basic "Metric server" will retrieve metrics from each nodes and pods, aggregates them, and stores them in-memory. Metrics-server is in-memory only, and does not store on-disk. There is no historical information.

Kubelet is (also) responsible for retrieving performance metrics from pods and exposing them to the metrics-server. (cAdvisor) “minikube add ons enable metrics-server” or deploy metrics-server deployment files.