app.rb

 #logging
    config.log_tags = [ :uuid ]
    config.log_level = :info
    config.lograge.enabled = true
    config.lograge.formatter = ->(data) { 
      "#{data.delete(:server_protocol)} #{data.delete(:method)} #{data.delete(:path)} #{data.delete(:status)} action=#{data.delete(:controller)}##{data.delete(:action)} #{data.map{|k,v| "#{k}=#{v}"}.join(' ')}" 
    } 

app_controller.rb

class ApplicationController < ActionController::Base
  def append_info_to_payload(payload)
    super
    payload[:server_protocol] = request.env['SERVER_PROTOCOL']
    payload[:remote_ip] = request.remote_ip
    payload[:session_id] = request.env['rack.session.record'].try(:session_id)
    payload[:user_id] = request.env['rack.session']['user_id']
    payload[:pid] = Process.pid
    #payload[:euid] = Process.euid
    payload[:ruby_heap_max_mb] = (GC.stat[:heap_length] *(2 << 13)).to_f / (2 << 19)
    
    #payload[:user_agent] = request.user_agent
    #payload[:accept] = request.accept
    #payload[:accept_language] = request.accept_language
    #payload[:accept_encoding] = request.accept_encoding
  end
end

Gemfile

gem 'lograge'