Add the following to your Gemfile then refresh your dependencies by executing "bundle install" (or just simple "bundle"):

gem "mongodb_logger"

or install by rubygems

gem install mongodb_logger

Add adapter in Gemfile. Supported mongo and moped (mongoid). For example:

gem "mongo"

gem "bson_ext" # for MRI

or

gem "moped"

Add the following line to your ApplicationController:

include MongodbLogger::Base

Add MongodbLogger settings to database.yml for each environment in which you want to use the MongodbLogger. The MongodbLogger will also look for a separate mongodb_logger.yml or mongoid.yml (if you are using mongoid) before looking in database.yml. In the mongodb_logger.yml and mongoid.yml case, the settings should be defined without the 'mongodb_logger' subkey. Example mongodb_logger.yml:

production:
  database: my_app
  capsize: <%= 500.megabytes %>
  host: localhost
  port: 27017
  replica_set: true

To setup web interface in you Rails application, first of all create autoload file in you Rails application (create file in "config/initializers/" directory):

require 'mongodb_logger/server' # required
# this secure you web interface by basic auth, but you can skip this, if you no need this
MongodbLogger::Server.use Rack::Auth::Basic do |username, password|
  [username, password] == ['admin', 'password']
end

and mount web in Rails routes:

mount MongodbLogger::Server.new, :at => "/mongodb"