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From Alan Carroll <>
Subject Re: No traffic.out file
Date Wed, 06 Mar 2019 20:46:48 GMT
It's a bit obscure. The log messages are actually always sent to stdout.
Usually this is the console, but command arguments can cause traffic_server
to reset stdout (file descriptor 1) to a file (normally traffic.out). These
are the `--bind_stdout` and `--bind_stderr` command line options (which,
sadly, are not documented. Should fix that...). If you want to see them
being used, use `trafficserver start` and then use "ps aux" to look at the
command line for "traffic_server" - you should see them there.

On Wed, Mar 6, 2019 at 8:55 AM Eric Chaves <> wrote:

> Hi Jason, you are correct, the DEBUG messages are being sent to console,
> thanks! Just for the record, I've checked diags.log but there was no
> message from ts.debug there either.  I'm actually running traffic_manager
> which I assume starts traffic_server. Since I'm running it inside a docker
> container grabbing the output was easy using docker logs =). Ayway would be
> nice to learn why the traffic.out is not being produced? Is this something
> ATS changed recently or does it require a special build/config?
> Once again, thanks for the tip. =)
> Em qua, 6 de mar de 2019 às 11:33, Jason Yang <>
> escreveu:
>> I am also new to ATS, so the answer might not be correct.
>> Have you checked var/log/trafficserver/diags.log? Also I think when you
>> run traffic_server instead trafficserver, it will print to console.
>> Jason
>> On Mar 6, 2019, 09:28 -0500, Eric Chaves <>, wrote:
>> Hi community,
>> I once again reach out for with another newbie question =) I'm playing
>> around with lua scripts but for some reason my ATS does not output ts.debug
>> messages to the traffic.out (which by the way is missing and not being
>> created automatically).
>> I've checked that proxy.config.diags.debug.enabled is enabled (set to 1)
>> and I've also added some extras tag to proxy.config.diags.debug.tags
>> (currently setted as my_lua|ts_lua|http|dns).
>> Apart from those settings is there any other settings I should set in
>> order to have debug messages sent  to traffic.out file?
>> Best regards,

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