Snipped of how Logstash is setup

logstash.rb

require "logstash-logger"

# Sensible configuration options that we want to share accross ENVs
Rails.application.configure do
  # Logstash has a bunch more config options that have sensible defaults.
  config.logstash.uri = ENV["LOG_SERVER"]
  # Use the lowest log level to ensure availability of diagnostic information
  # when problems arise.
  config.log_level = ENV["LOG_LEVEL"] || :info

  # Optional, Rails 4 defaults to true in development and false in production
  config.autoflush_log = false

  # not needed since the logging instance is on the same network
  config.logstash.ssl_enable = false
end