Re: [gwml] [Performance] Mail server log is too verbose due to debug log

[Ammar Faizi <ammarfaizi2@gnuweeb.org>]

Thank you so much. I will verify it.

On 5/26/21 9:28 PM, Sprite wrote:
> I have fixed the problem, it was "auth_debug = yes" and 
> "auth_debug_passwords = yes" on the /etc/dovecot/conf.d/10-auth.conf 
> file.
>
> On 26/05/21 21.24, Sprite wrote:
>> It looks like, I forgot to turn off the password debug log, when I 
>> was trying to find out why the server's virtual mails doesn't work. 
>> I'll check on this.
>>
>> On 26/05/21 17.27, Ammar Faizi wrote:
>>> Hi Sprite,
>>>
>>> I found that the mail server is yielding very large amount of debug
>>> log in journalctl for every simple action we do in our mail service.
>>>
>>> There are plenty of debug log like this:
>>> May 26 10:20:29 gnuweeb dovecot[88910]: auth-worker(112967): Debug: 
>>> sql(admin@gnuweeb.org,xxx.xxx.184.174,<8a/+/DjD6qJEt7iu>): 
>>> CRYPT(xxxxxxxxxx) != '$2y$05$xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
>>> May 26 10:20:29 gnuweeb dovecot[88910]: auth: Debug: 
>>> sql(admin@gnuweeb.org,xxx.xxx.184.174,<8a/+/DjD6qJEt7iu>): Finished 
>>> passdb lookup
>>> May 26 10:20:29 gnuweeb dovecot[88910]: auth: Debug: 
>>> auth(admin@gnuweeb.org,xxx.xxx.184.174,<8a/+/DjD6qJEt7iu>): Auth 
>>> request finished
>>> May 26 10:20:29 gnuweeb dovecot[88910]: auth-worker(112967): Debug: 
>>> sql(admin@gnuweeb.org,xxx.xxx.184.174,<8a/+/DjD6qJEt7iu>): Finished 
>>> passdb lookup
>>> May 26 10:20:29 gnuweeb dovecot[88910]: auth-worker(112967): Debug: 
>>> conn unix:auth-worker (pid=112966,uid=113): auth-worker<8>: Finished
>>> May 26 10:20:31 gnuweeb dovecot[88910]: auth: Debug: client passdb 
>>> out: FAIL        3        user=admin@gnuweeb.org
>>> ```
>>>
>>> We probably can improve the server performance if we can turn off this
>>> debug log. Also, as we know this log is written to disk. We can save
>>> a lot of I/O operations if we turn off the debug mode.
>>>
>>> Regards,
>>>   Ammar Faizi
>>>
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