Kubernetes Metrics Server

External

• https://github.com/kubernetes-incubator/metrics-server

Internal

• Metrics in Kubernetes
• Horizontal Pod Autoscaling

Overview

The Kubernetes metrics server, also referred to as "metrics-server" is a lightweight, short-term, in-memory server to collect and expose resource metrics. metrics-server is used as part of the Kubernetes resource metrics pipeline.

metrics-server discovers all nodes on the cluster and queries each node's kubelet for resource metrics (CPU and memory). There's embedded logic in the kubelet, known as cAdvisor, that

TODO

• Install the metric server for EKS: https://docs.aws.amazon.com/eks/latest/userguide/horizontal-pod-autoscaler.html