Prometheus: Difference between revisions

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Revision as of 15:34, 19 February 2022

A system monitoring tool.
Metrics are polled/persisted over REST,

Documentation

home https://prometheus.io/

Tutorials

overview https://sbcode.net/prometheus/

Locations

http://${IP_ADDR}:9090 web-ui
http://${IP_ADDR}:9090/targets web-gui (health of queried metrics)
${PREFIX}/etc/prometheus.yml main configuration

Ports

9090 default web-ui

Quickstart

  • prometheus polls HTTP endpoints for collected metrics
  • these endpoints are called exporters, and they are generated/exposed using clients
  • you can configure rules to persist data, or emit alerts when a metric fails
xdg-open localhost:9090                          # prometheus-ui
promtool check rules /path/to/example.rules.yml  # syntax-check rules

Notes

Setup

prometheus install
prometheus exporters
prometheus alerters

Configuration

prometheus configuration
prometheus rules

Usage

prometheus web ui
prometheus http api
prometheus promql

Integrations

Dashboards

prometheus grafana metric/graph dashboards
prometheus alerta alerts dashboard

Notifications

prometheus pagerduty android/ios push notifications on alerts