anchor.diff:                    {<<"grp_level_2">>,      leo_misc:any_to_binary(GrpLevel2)},
                     {<<"rack_id">>,          leo_misc:any_to_binary(GrpLevel2)},
                     {<<"log_dir">>,          leo_misc:any_to_binary(leo_misc:get_value('log', Directories, []))},
  +                  {<<"log_level">>,        leo_misc:any_to_binary(LogLevel)},
                     {<<"ring_cur">>,         leo_misc:any_to_binary(leo_hex:integer_to_hex(leo_misc:get_value('ring_cur',  RingHashes, 0), 8))},
                     {<<"ring_prev">>,        leo_misc:any_to_binary(leo_hex:integer_to_hex(leo_misc:get_value('ring_prev', RingHashes, 0), 8))},
                     {<<"vm_version">>,       leo_misc:any_to_binary(leo_misc:get_value('vm_version', Statistics, []))},
  
positive.code: node_stat(?SERVER_TYPE_GATEWAY, State) ->
      Version      = leo_misc:get_value('version',       State, []),
      Directories  = leo_misc:get_value('dirs',          State, []),
      HttpConf     = leo_misc:get_value('http_conf',     State, []),
      RingHashes   = leo_misc:get_value('ring_checksum', State, []),
      Statistics   = leo_misc:get_value('statistics',    State, []),
  
negative.code:     NumOfVNodes = leo_misc:get_value('num_of_vnodes', State, -1),
      GrpLevel2   = leo_misc:get_value('grp_level_2',   State, []),
      Directories = leo_misc:get_value('dirs',          State, []),
      LogLevel    = leo_misc:get_value('log_level',     State, []),
      RingHashes  = leo_misc:get_value('ring_checksum', State, []),
      Statistics  = leo_misc:get_value('statistics',    State, []),
      MsgQueue    = leo_misc:get_value('storage', Statistics, []),
  