Include build info on Prometheus metrics
Problem
The build info attributes are not exposed through Prometheus.
Solution
Expose build info using a labeled gauge, named registry_build_info
, with a fixed value of 1
. This gauge has three attributes: version
, revision
and package
(all exposed by the version
package and defined in the Makefile).
This strategy (labeled gauge with a fixed value of 1
) is the same as the one used by Prometheus itself (for prometheus_build_info
) and by other Docker related projects (e.g. moby/moby).
How to Use
Add the following to the container registry config file:
http:
# ...
debug:
addr: :5001
prometheus:
enabled: true
path: /metrics
Invoke the /metrics
path:
curl localhost:5001/metrics
...
# HELP registry_build_info Information about the registry.
# TYPE registry_build_info gauge
registry_build_info{package="github.com/docker/distribution",revision="7a3d88e28cf3701fc263a4b136307ab65baa25cf.m",version="v2.7.6-gitlab-34-g7a3d88e2.m"} 1
...
Edited by João Pereira