# File lib/fog/rackspace/load_balancers.rb, line 148
        def authenticate
          options = {
            :rackspace_api_key  => @rackspace_api_key,
            :rackspace_username => @rackspace_username,
            :rackspace_auth_url => @rackspace_auth_url
          }
          credentials = Fog::Rackspace.authenticate(options, @connection_options)
          @auth_token = credentials['X-Auth-Token']
          account_id = credentials['X-Server-Management-Url'].match(/.*\/([\d]+)$/)[1]
          @path = "#{@path}/#{account_id}"
        end