old_contents: graphite_url = 'http://dori.intra.douban.com:8800'
  listen_host = '0.0.0.0'
  listen_port = 8809
  debug = True
  
new_contents: graphite_url = 'http://dori.intra.douban.com:8800'
  listen_host = '0.0.0.0'
  listen_port = 8808
  debug = False
  
subject: rollback config