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garage/script/telemetry/README.md
maximilien d00358a326 telemetry: swap elastic for jaeger 2.x
2026-09-30 08:20:31 +00:00

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Garage telemetry test stack

A small local stack to look at Garage metrics and traces:

  • Prometheus scrapes Garage metrics from the admin API
  • Jaeger receives traces over OTLP
  • Grafana with the Garage dashboard preloaded

Configure Garage

Build Garage with the telemetry-otlp feature to export traces, then set in your config:

[admin]
api_bind_addr = "0.0.0.0:3903"
trace_sink = "http://localhost:4317"

The admin API must listen on an address reachable from containers, not the local loopback. If you set metrics_token, uncomment the authorization section in prometheus.yml.

Start the stack

cd script/telemetry
docker compose up

Web interfaces

  • Grafana: The Garage dashboard is preloaded, and traces can be browsed in Explore with the Jaeger data source.
  • Jaeger: trace search UI
  • Prometheus: check that the garage target is up under Status → Targets

Traces are kept in memory and are lost when Jaeger restarts. Metrics are kept for 7 days. Run docker compose down -v to remove all data.

Upgrades

The versions are managed in the .env file.