Example of separate metrics exporter process for Yabeda with Prometheus (Ruby)

yabeda-prometheus-metrics-exporter.rb

#!/usr/bin/env ruby

# Example of how to launch separate process to export all metrics from Ruby processes on the same host/container.

# IMPORTANT:
# You MUST configure Direct File store in official Prometheus Ruby client for this to work.
# See https://github.com/yabeda-rb/yabeda-prometheus#multi-process-server-support

# Example of configuration that should be made for additional process to export all metrics
# Here: export Sidekiq metrics from not worker process. See https://github.com/yabeda-rb/yabeda-sidekiq#configuration
ENV["YABEDA_SIDEKIQ_COLLECT_CLUSTER_METRICS"] = 'true'
ENV["YABEDA_SIDEKIQ_DECLARE_PROCESS_METRICS"] = 'true'

# Boot Rails application
APP_PATH = File.expand_path('../config/application', __dir__)
require_relative '../config/boot'
require_relative '../config/environment'

# Run exporter
default_port = ENV.fetch('PORT', 9394)
::Rack::Handler::WEBrick.run(
  Yabeda::Prometheus::Exporter.rack_app,
  Host: ENV['PROMETHEUS_EXPORTER_BIND'] || '0.0.0.0',
  Port: ENV.fetch('PROMETHEUS_EXPORTER_PORT', default_port),
  AccessLog: []
)