— Hey! Sidekiq dashboard stats looks like a Prometheus metrics!?

— Indeed ... 🤔

Open dashboard example file (grafana 7), then open https://<your grafana-url>/dashboard/import and paste the content of the file.

(starting Sidekiq v4.1.0)

Add this line to your application's Gemfile:

gem 'sidekiq-prometheus-exporter', '~> 0.1'

And then execute:

$ bundle

Or install it yourself as:

$ gem install sidekiq-prometheus-exporter -v '~> 0.1'

For a fresh new application to expose metrics create config.ru file with next code inside

require 'sidekiq'
require 'sidekiq/prometheus/exporter'

Sidekiq.configure_client do |config|
  config.redis = {url: 'redis://<your-redis-host>:6379/0'}
end

run Sidekiq::Prometheus::Exporter.to_app

Use your favorite server to start it up, like this

$ bundle exec rackup -p9292 -o0.0.0.0

and then curl https://0.0.0.0:9292/metrics

When you have rails application, it's possible to mount exporter as a rack application in your routes.rb

Rails.application.routes.draw do
  # ... omitted ...

  # For more information please check here
  # https://api.rubyonrails.org/v5.1/classes/ActionDispatch/Routing/Mapper/Base.html#method-i-mount
  require 'sidekiq/prometheus/exporter'
  mount Sidekiq::Prometheus::Exporter => '/metrics'
end

Use rails server from bin folder to start it up, like this

$ ./bin/rails s -p 9292 -b 0.0.0.0

and then curl https://0.0.0.0:9292/metrics

If you are ok with metrics being exposed via Sidekiq web dashboard because you have it inside your private network or only Prometheus scraper will have access to a machine/port/etc, then add a few lines into your web config.ru

require 'sidekiq/web'
require 'sidekiq/prometheus/exporter'

Sidekiq::Web.register(Sidekiq::Prometheus::Exporter)

and then curl https://<your-sidekiq-web-uri>/metrics

If we are talking about isolation you can run already prepared official rack application in the Docker container by using the public image (check out this README for more)

$ docker run -it --rm \
             -p 9292:9292 \
             -e REDIS_URL=redis://<your-redis-host>:6379/0 \
             strech/sidekiq-prometheus-exporter

and then curl https://0.0.0.0:9292/metrics

And finally the cloud solution (who don't these days). Easy to install, easy to use. A fully-functioning Helm-package based on official Docker image, comes with lots of configuration options

$ helm repo add strech https://strech.github.io/sidekiq-prometheus-exporter
"strech" has been added to your repositories

$ helm install strech/sidekiq-prometheus-exporter --name sidekiq-metrics

to curl your metrics, please follow the post-installation guide

If you want to see at the exporter startup time a banner about which exporters are enabled add this call to your config.ru (but after exporter configure statement)

require 'sidekiq/prometheus/exporter'

puts Sidekiq::Prometheus::Exporter.banner

💢 if you don't see your banner try to output into STDERR instead of STDOUT

By default we try to detect as many as possible sidekiq contribs and add their metrics to the output. But you can change this behaviour by configuring exporters setting

require 'sidekiq/prometheus/exporter'

# Keep the default auto-detect behaviour
Sidekiq::Prometheus::Exporter.configure do |config|
  config.exporters = :auto_detect
end

# Keep only standard (by default) and cron metrics
Sidekiq::Prometheus::Exporter.configure do |config|
  config.exporters = %i(cron)
end

💡 if you did't find the contrib you would like to see, don't hesitate to open an issue and describe what do you think we should export.

Bug reports and pull requests to support earlier versions of Sidekiq are welcome on GitHub at https://github.com/Strech/sidekiq-prometheus-exporter/issues.

If you are missing your favourite Sidekiq contrib and want to contribute, please make sure that you are following naming conventions from Prometheus.

Please see LICENSE for licensing details.