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

[Sprite <sprite@gnuweeb.org>]

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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