ConfD 8.0.6 Crash & Closed Sockets – How to Decode Error Logs?

General
1

Hello DMAP community,

we recently updated our ConfD from version 7.2.6 to 8.0.6, and since then, we have been experiencing some failures in our equipment due to ConfD crashing or its sockets closing. We have not yet been able to identify the cause of this failure. All we see is that all processes communicating with ConfD complain that the worker socket was closed. Then, we notice that one of the processes started by ConfD crashes and generates a core dump, usually dirt_cpu_sch.

The issue is that, in one of the occurrences, we noticed that a binary error log was generated right when the processes started reporting the closed socket: confd_error-2025-02-22_22-23-51.tar.gz. Our expectation is to get more answers about what might have happened by decoding this log. However, we don’t know how to do that.

Could you guide us on how to decode it, or should we forward it to you?

2

Hi Fabio, normally confd produces confderr.log.* artifacts.
In order to decode these files you can:

cd $FOLDER/logs ( Wherever you find the confderr.log-files )
confd --printlog confderr.log

That will read the binary compacted files and make it readable, please add the output here?

Kind regards,

Fabian

3

Thank you very much for the response.

I decoded the file, and the result was as follows:

21-Feb-2025::13:15:22.715 <0.47.0> <0.74.0> confd_log_handler:528: log failed badarg
[{io_lib,format,
[“failed generating response message: ~nPDU: ~w~n~w”,
[{pdu,‘get-response’,1426607292,noError,0,
[48,“(”,
[[6,[14],43,[6,1,2,1,31,1,1,1,1,[152,194,128,1]]],
[4,[22],“gigabit-ethernet-1/1/1”]],
48,“(”,
[[6,[14],43,[6,1,2,1,31,1,1,1,1,[152,194,128,2]]],
[4,[22],“gigabit-ethernet-1/1/2”]],
48,“(”,
[[6,[14],43,[6,1,2,1,31,1,1,1,1,[152,194,128,3]]],
[4,[22],“gigabit-ethernet-1/1/3”]],
48,“(”,
[[6,[14],43,[6,1,2,1,31,1,1,1,1,[152,194,128,4]]],
[4,[22],“gigabit-ethernet-1/1/4”]],
48,“(”,
[[6,[14],43,[6,1,2,1,31,1,1,1,1,[152,194,128,5]]],
[4,[22],“gigabit-ethernet-1/1/5”]],
48,“(”,
[[6,[14],43,[6,1,2,1,31,1,1,1,1,[152,194,128,6]]],
[4,[22],“gigabit-ethernet-1/1/6”]],
48,“(”,
[[6,[14],43,[6,1,2,1,31,1,1,1,1,[152,194,128,7]]],
[4,[22],“gigabit-ethernet-1/1/7”]],
48,“(”,
[[6,[14],43,[6,1,2,1,31,1,1,1,1,[152,194,128,8]]],
[4,[22],“gigabit-ethernet-1/1/8”]],
48,“,”,
[[6,[14],43,[6,1,2,1,31,1,1,1,1,[160,194,128,1]]],
[4,[26],“ten-gigabit-ethernet-1/1/1”]],
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[4,[26],“ten-gigabit-ethernet-1/1/2”]],
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[4,[26],“ten-gigabit-ethernet-1/1/3”]],
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[4,[26],“ten-gigabit-ethernet-1/1/4”]],
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[21],
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[{varbind,[1,3,6,1,2,1,31,1,1,1,1,51412993],
‘OCTET STRING’,“gigabit-ethernet-1/1/1”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,1,51412994],
‘OCTET STRING’,“gigabit-ethernet-1/1/2”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,1,51412995],
‘OCTET STRING’,“gigabit-ethernet-1/1/3”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,1,51412996],
‘OCTET STRING’,“gigabit-ethernet-1/1/4”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,1,51412997],
‘OCTET STRING’,“gigabit-ethernet-1/1/5”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,1,51412998],
‘OCTET STRING’,“gigabit-ethernet-1/1/6”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,1,51412999],
‘OCTET STRING’,“gigabit-ethernet-1/1/7”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,1,51413000],
‘OCTET STRING’,“gigabit-ethernet-1/1/8”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,1,68190209],
‘OCTET STRING’,“ten-gigabit-ethernet-1/1/1”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,1,68190210],
‘OCTET STRING’,“ten-gigabit-ethernet-1/1/2”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,1,68190211],
‘OCTET STRING’,“ten-gigabit-ethernet-1/1/3”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,1,68190212],
‘OCTET STRING’,“ten-gigabit-ethernet-1/1/4”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,1,83886081],
‘OCTET STRING’,“lag-1”,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,51412993],
‘Counter32’,46086,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,51412994],
‘Counter32’,6069171,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,51412995],
‘Counter32’,6484686,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,51412996],
‘Counter32’,302059,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,51412997],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,51412998],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,51412999],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,51413000],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,68190209],
‘Counter32’,324226,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,68190210],
‘Counter32’,445345,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,68190211],
‘Counter32’,1753047,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,68190212],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,2,83886081],
‘Counter32’,348145,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,51412993],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,51412994],‘Counter32’,248,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,51412995],
‘Counter32’,45392,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,51412996],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,51412997],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,51412998],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,51412999],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,51413000],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,68190209],‘Counter32’,1,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,68190210],‘Counter32’,4,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,68190211],
‘Counter32’,317904,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,68190212],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,3,83886081],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,51412993],
‘Counter32’,331975,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,51412994],
‘Counter32’,6496818,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,51412995],
‘Counter32’,6069171,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,51412996],
‘Counter32’,6631,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,51412997],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,51412998],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,51412999],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,51413000],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,68190209],
‘Counter32’,324318,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,68190210],
‘Counter32’,327700,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,68190211],
‘Counter32’,116723,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,68190212],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,4,83886081],
‘Counter32’,338606,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,51412993],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,51412994],
‘Counter32’,91784,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,51412995],‘Counter32’,248,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,51412996],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,51412997],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,51412998],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,51412999],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,51413000],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,68190209],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,68190210],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,68190211],
‘Counter32’,292585,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,68190212],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,5,83886081],‘Counter32’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,51412993],
‘Counter64’,4181644,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,51412994],
‘Counter64’,82807722389,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,51412995],
‘Counter64’,252706049869,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,51412996],
‘Counter64’,73527536,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,51412997],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,51412998],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,51412999],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,51413000],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,68190209],
‘Counter64’,5752842229162,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,68190210],
‘Counter64’,2195111840972,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,68190211],
‘Counter64’,276051530625,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,68190212],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,6,83886081],
‘Counter64’,77709180,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,51412993],‘Counter64’,274,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,51412994],
‘Counter64’,328540084,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,51412995],
‘Counter64’,393668380,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,51412996],
‘Counter64’,188633,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,51412997],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,51412998],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,51412999],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,51413000],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,68190209],
‘Counter64’,4699663149,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,68190210],
‘Counter64’,1887201011,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,68190211],
‘Counter64’,728621642,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,68190212],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,7,83886081],
‘Counter64’,188907,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,51412993],
‘Counter64’,46086,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,51412994],
‘Counter64’,6069171,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,51412995],
‘Counter64’,6484686,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,51412996],
‘Counter64’,302059,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,51412997],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,51412998],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,51412999],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,51413000],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,68190209],
‘Counter64’,324226,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,68190210],
‘Counter64’,445345,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,68190211],
‘Counter64’,1753047,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,68190212],‘Counter64’,0,1},
{varbind,[1,3,6,1,2,1,31,1,1,1,8,83886081],
‘Counter64’,348145,1}]},
{badarg,[{erlang,‘–’,
[[1,3,6,1,2,1,31,1,1,1,6,83886081],
[1,3,6,1,2,1,31,1,1,1,6]],
},
{confd_snmpa_lib,str_fmt_oid,2,
[{file,“confd_snmpa_lib.erl”},
{line,1581}]},
{confd_snmpa_lib,‘-fmt_vbinds/2-fun-0-’,2,
[{file,“confd_snmpa_lib.erl”},
{line,1514}]},
{lists,filtermap,2,[{file,“lists.erl”},{line,1317}]},
{lists,filtermap,2,[{file,“lists.erl”},{line,1321}]},
{confd_snmpa_lib,fmt_vbinds1,1,
[{file,“confd_snmpa_lib.erl”},
{line,1506}]},
{confd_snmpa_lib,format_msg,1,
[{file,“confd_snmpa_lib.erl”},
{line,1460}]},
{confd_log,snmpa_log,1,
[{file,“confd_log.erl”},{line,240}]},
{snmpa_mpd,generate_response_msg,7,
[{file,“snmpa_mpd.erl”},{line,571}]},
{snmpa_net_if,handle_reply_pdu,7,
[{file,“snmpa_net_if.erl”},{line,760}]},
{snmpa_net_if,maybe_handle_reply_pdu,7,
[{file,“snmpa_net_if.erl”},{line,751}]},
{snmpa_net_if,loop,1,
[{file,“snmpa_net_if.erl”},{line,348}]},
{proc_lib,init_p_do_apply,3,
[{file,“proc_lib.erl”},{line,249}]}]}]],
[{file,“io_lib.erl”},{line,187}]},
{confd_log_handler,format_message,1,
[{file,“confd_log_handler.erl”},{line,630}]},
{confd_log_handler,do_log,3,[{file,“confd_log_handler.erl”},{line,539}]},
{confd_log_handler,try_do_log,3,[{file,“confd_log_handler.erl”},{line,525}]},
{confd_log_handler,handle_log,2,[{file,“confd_log_handler.erl”},{line,520}]},
{confd_log_handler,handle_call,3,[{file,“confd_log_handler.erl”},{line,273}]},
{gen_server,try_handle_call,4,[{file,“gen_server.erl”},{line,677}]},
{gen_server,handle_msg,6,[{file,“gen_server.erl”},{line,706}]},
{proc_lib,init_p_do_apply,3,[{file,“proc_lib.erl”},{line,249}]}]
21-Feb-2025::13:15:22.793 <0.625.0> <0.1694.0> bad arg to log function: badarg
Program counter: 0x00e62930 (unknown function)
CP: 0xb5ec3564 (confd_log:devel_log/5 + 216)

0xb0cac4f8 Return addr 0xb188aec8 (confd_snmpa_error:user_err/2 + 112)
y(0)
y(1)
y(2)
y(3)
y(4) {error,badarg}
y(5)

0xb0cac514 Return addr 0xb172c04c (snmpa_error:report_err/3 + 124)
y(0)
y(1)

0xb0cac520 Return addr 0xb0e1f9f0 (snmpa_net_if:maybe_handle_reply_pdu/7 + 552)
y(0)
y(1)
y(2)
y(3) Catch 0xb172c04c (snmpa_error:report_err/3 + 124)

0xb0cac534 Return addr 0xb0e1e438 (snmpa_net_if:loop/1 + 2936)
y(0) {state,<0.1671.0>,<0.1692.0>,<0.1691.0>,[{{{0,0,0,0},161,{netns,<<>>},{vrf,<<>>}},#Port<0.583>},{{{172,31,250,249},161,{netns,<<>>},{vrf,<<>>}},#Port<0.584>},{{{0,0,0,0,0,0,0,0},161,{netns,<<>>},{vrf,<<>>}},#Port<0.585>}],[binary,{reuseaddr,true},{recbuf,65536}],,[binary,{reuseaddr,true},{recbuf,65536}],{state,false,true,true,[128,0,14,125,3,112,205,145,229,81,164],50000},{undefined,},,false,32,,snmpa_net_if_filter,false,{0,{,}}}
y(1)
y(2)
y(3)
y(4)
y(5)
y(6)
y(7)
y(8)

0xb0cac55c Return addr 0xb6550efc (proc_lib:init_p_do_apply/3 + 36)

0xb0cac560 Return addr 0x00deb6d4 ()
y(0)
y(1)
y(2) Catch 0xb6550f0c (proc_lib:init_p_do_apply/3 + 52)

4

Morning Fabio, could you send me the error logs in a tar-file? :wink:

It can be the original files and I will decode them here.

Additionally, you mentioned another file confd_error-2025-02-22_22-23-51.tar.gz - is this file generated by your application?

If you have it please send it over.

Kind regards,

Fabian

5

Hi Fabian,

First, to answer your question about the .tar.gz file, yes, our system generates this file when ConfD shuts down with an error. We take the existing confd_error log file, compress it into a .tar.gz, and save it.

Regarding the logs, the issue I mentioned in my first comment in this topic occurred on four of our devices.

I decoded them and noticed that they contain multiple entries like the following message:

=ERROR REPORT==== 5-Mar-2025::11:15:49.19 === cli_cmd_io got {paginate,false}

Could this error have any serious impact? I ask because the memory of these devices was being monitored, and at the same intervals where we see this log, we also observe a drop in memory.

If you think this may be off-topic, I can create a new topic for it.

I tried to forward the files, but I am unable to do so due to format limitations. Is there another way I can send them?

(Attachment confd_logs.tar.gz is missing)