Rack::Monitor

Rack::Monitor is Rack middleware collecting run-time information for monitoring tools like Munin.

Installation

$ sudo gem install rack-monitor

Basic Usage

Rack::Monitor is implemented as a piece of Rack middleware and can be used with any Rack-based application. If your application includes a rackup (‘.ru`) file or uses Rack::Builder to construct the application pipeline, simply require and use as follows:

require 'rack/monitor'

use Rack::Monitor if ENV['RACK_ENV'] == 'production'

run app

Using with Rails

Add this to your ‘config/environments/production.rb`:

config.gem "rack-monitor", :lib => "rack/monitor"

require 'rack/monitor' #Rails bug?
config.middleware.use Rack::Monitor

You should now see ‘Rack::Monitor` listed in the middleware pipeline:

RAILS_ENV=production rake middleware

Monitoring with Munin

Copy plugin files from github.com/pka/rack-monitor/tree/master/munin/ to /etc/munin/plugins/

Setup a configuration in /etc/munin/plugin-conf.d/ like github.com/pka/rack-monitor/tree/master/muninplugin-conf.d/rack

/etc/init.d/munin-node restart

Rack::Monitor

Installation

Basic Usage

Using with Rails

Monitoring with Munin

Links

Copyright