How to debug BIND

Kaouthar Chetioui kaoutharchetioui at gmail.com
Mon Dec 1 10:31:16 UTC 2014


thank very much for your answer,

I have done it, and when I look at log file, I found a lot of information
like this:

29-Nov-2014 18:09:58.121 general: debug 60: sockmgr 0xb77d7008: watcher got
message -3 for socket 514
29-Nov-2014 18:09:58.121 general: debug 60: sockmgr 0xb77d7008: watcher got
message -2 for socket -1
29-Nov-2014 18:09:58.121 general: debug 50: socket 0xb558ce18: socket_recv:
event 0xb558d008 -> task 0xb7807550
29-Nov-2014 18:09:58.121 resolver: debug 3: resquery 0xb5103280 (fctx
0xb50fc008(C0010/A)): sent
29-Nov-2014 18:09:58.121 resolver: debug 3: resquery 0xb5103008 (fctx
0xb50fc008(C0010/A)): senddone
29-Nov-2014 18:09:58.121 resolver: debug 3: resquery 0xb5103280 (fctx
0xb50fc008(C0010/A)): udpconnected
29-Nov-2014 18:09:58.121 resolver: debug 3: fctx 0xb50fc008(C0010/A'):
add_bad
29-Nov-2014 18:09:58.121 lame-servers: info: network unreachable resolving
'C0010/A/IN': 192.228.79.201#53
29-Nov-2014 18:09:58.121 resolver: debug 3: fctx 0xb50fc008(C0010/A'):
cancelquery
29-Nov-2014 18:09:58.121 dispatch: debug 90: dispatch 0xb78037f8 response
0xb5591638 192.228.79.201#53: detaching from task 0xb7809ca0

I don't find any name of source file (like message.c or name.c) or name of
function in this log file, so I can't understand excatly the process of
resolution for dig command.
So, I'm asking if we can have more details in log files about BND  source
files and functions involved in dns resolution?

Thanks.

2014-11-30 14:32 GMT+00:00 Tony Finch <dot at dotat.at>:

> Kaouthar Chetioui <kaoutharchetioui at gmail.com> wrote:
> > I want to know the exact path that follows bind to resolve a DNS query
>
> Try running
>
> $ rndc flush
> $ rndc trace 11
> $ dig www.example.ma
>
> Then look at named's logs which will give you lots of details about
> queries, responses, and the parts of BIND involved in the process.
>
> Tony.
> --
> f.anthony.n.finch  <dot at dotat.at>  http://dotat.at/
> South Fitzroy: Northerly 5 to 7, occasionally gale 8 at first. Rough,
> occasionally very rough at first. Showers. Good, occasionally moderate.
>



-- 
Kaouthar CHETIOUI
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