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FabledSteward/plugins/prometheus/plugin.yaml
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bvandeusenandClaude Opus 5.5 3cb2a95054
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feat(prometheus): scrape any /metrics endpoint into Steward's metrics, with pages (#5668, #5669)
A bundled prometheus plugin, on by default like the other protocol plugins.
Targets are rows edited on its page: address, bearer token (encrypted),
interval, keep/leave-out name patterns and a series cap. Steward does the
filtering; the endpoint serves everything (Archives' ruling).

- A 5 s tick scrapes due targets at once, each within a 30 s deadline, and
  writes the outcome to its row and its series through record_metrics, so
  alert rules can watch any of them.
- Gauges are stored as they are; counters (and a histogram's or summary's
  _sum/_count) as <name>_per_sec rates from the second scrape. Buckets and
  quantiles are skipped. A labelled series is stored under
  "<target>:k=v,…". Each target also records is_up, scrape_ms, series_kept
  and series_capped.
- Pages: targets not answering first, with why; a target's series grouped
  by metric with their newest values; a chart per series; the editor with
  Test, which scrapes once and says what would be stored.
- The counter-to-rate keeper moves to steward/core/counter_rates.py; SNMP's
  RateKeeper now scales its rate on top of it.
- metric_value reads Prometheus's _seconds as a span and _per_sec as a rate.
- The catalog guard treats an empty list as a dynamic source (snmp,
  prometheus), as the rule form does.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-12 07:04:01 -04:00

18 lines
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YAML

# plugins/prometheus/plugin.yaml
name: prometheus
version: "1.0.0"
description: "Scrapes Prometheus /metrics endpoints into Steward's metrics, so any service that exposes them can be charted and alerted on."
author: "Steward"
license: "MIT"
min_app_version: "0.1.0"
repository_url: "https://git.fabledsword.com/bvandeusen/FabledSteward"
homepage: "https://git.fabledsword.com/bvandeusen/FabledSteward/src/branch/dev/plugins/prometheus"
tags:
- prometheus
- metrics
- monitoring
# Targets are added, tested and edited on the Prometheus page
# (/plugins/prometheus/); each carries its own interval.
config: {}