See the Whole Platform: Prometheus, Grafana, Loki, and OpenTelemetry

Every component in this series has been exposing metrics: Postgres, Kafka, OpenSearch, Cilium, the cluster itself, each one had a line about the monitoring stack scraping it &ldquo;later.&rdquo; This is later. The 2020 book treated monitoring as an afterthought, a single page pointing at a project&rsquo;s README. Observability is the difference between operating a platform and hoping it is fine. I…