How do I install Prometheus and Grafana? Do I have to configure all the dashboards manually?

No. The industry standard is to use the `kube-prometheus-stack` Helm Chart. With one `helm install` command, it deploys Prometheus, Grafana, Alertmanager, and pre-loads dozens of incredibly detailed dashboards specifically built for Kubernetes cluster monitoring.

Is Prometheus only for Kubernetes metrics like CPU and RAM?

No! You should instrument your own application code. If you are building a Node.js or Python backend, you import a Prometheus client library. You can then expose custom business metrics, like 'total_user_signups' or 'failed_stripe_payments', and graph them in Grafana right next to your CPU metrics.

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Observability & Monitoring

Master cloud-native observability. Understand why ephemeral systems require centralized logging DaemonSets, how Prometheus scrapes time-series metrics via the pull model, and how Grafana visualizes the data.

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