k8s: Building a Custom Metrics Exporter for Kubernetes

The post explains how to build a custom Prometheus metrics exporter for Kubernetes in Go, package it as a minimal container image, and expose it for scraping by Prometheus. It also shows how to verify the target in Prometheus and notes that a metrics adapter such as Prometheus Adapter is needed if you want to use the exported metrics for HorizontalPodAutoscaler scaling.

• Source: Kubernetes Official Blog