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A Prometheus exporter for Buildbot

Project description

buildbot-prometheus is a Python package that provides a Prometheus metrics exporter for buildbot.

This package is build for Buildbot version 0.9.

Installation

$ pip install buildbot_prometheus

Then add the following to your buildbot master.cfg file and restart the master.

from buildbot_prometheus import Prometheus
c['services'].append(Prometheus(port=9101))

The buildbot master should now be exposing metrics to Prometheus. An example of the metrics provided by the Buildbot exporter is shown below by using curl to fetch the metrics:

$ curl -s localhost:9100/metrics | grep -v "#" | sort
buildbot_build_requests_duration_seconds{builder_id="1"} 2.0
buildbot_build_requests_success{builder_id="1"} 1.0
buildbot_builders_running_total 1.0
buildbot_builders_running{builder_id="1",builder_name="runtests"} 1.0
buildbot_builds_duration_seconds{builder_id="1",worker_id="2"} 2.571184
buildbot_builds_success{builder_id="1",worker_id="2"} 1.0
buildbot_buildsets_duration_seconds{buildset_id="8"} 2.0
buildbot_buildsets_success{buildset_id="8"} 1.0
buildbot_steps_duration_seconds{builder_id="1",step_name="git",step_number="0",worker_id="2"} 1.742647
buildbot_steps_duration_seconds{builder_id="1",step_name="shell",step_number="1",worker_id="2"} 0.334757
buildbot_steps_success{builder_id="1",step_name="git",step_number="0",worker_id="2"} 1.0
buildbot_steps_success{builder_id="1",step_name="shell",step_number="1",worker_id="2"} 1.0
buildbot_workers_running_total 1.0
buildbot_workers_running{worker_id="2",worker_name="worker1"} 1.0

A configuration block such as the following example should be added to the Prometheus configuration file to instruct it to scrape the buildbot metrics exporter.

scrape_configs:
  - job_name: 'buildbot'
    target_groups:
      - targets: ['localhost:9101']

Prometheus will then automatically associate a job label of buildbot with metrics from this exporter. Prometheus will also automatically associate an instance label (e.g. ‘localhost:9101’) too.

All metrics exposed by this exporter are prefixed with the buildbot_ string as a namespace strategy to isolate them from other Prometheus exporters which makes them easier to find in metrics consumer and visualisation tools such as Grafana.

All duration metrics use seconds as the unit of measure.

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