Individual skill

prometheus-pro

Prometheus guidance — metrics design, PromQL, alerting rules, exporters, recording rules, and operations.

skills/prometheus-pro/SKILL.md

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## Overview

Prometheus is the standard open-source metrics system: it scrapes HTTP endpoints for time-series metrics, stores them efficiently, queries with PromQL, and alerts via Alertmanager. The pull model, dimensional labels, and powerful query language make it the backbone of Kubernetes observability and much more.

Using Prometheus well is about metric design (what to instrument, how to label), PromQL fluency, and alerting discipline (alert on symptoms, not causes). This skill covers instrumentation patterns, PromQL, recording/alerting rules, and operating Prometheus reliably.

## When to use

- Instrumenting applications (choosing metrics and labels).
- Writing PromQL queries and dashboards.
- Designing alerting rules (what to alert on, thresholds).
- Setting up exporters (node, blackbox, custom).
- Configuring recording rules for expensive queries.
- Operating Prometheus (retention, HA, federation, remote storage).