[squid-users] squid writes to /var/log/messages

[sampei02 at tiscali.it]

I solved disabling ‘-s' option in squid startup script.
Thanks



> On 21 Dec 2020, at 15:36, Alex Rousskov <rousskov at measurement-factory.com> wrote:
> 
> On 12/21/20 8:29 AM, sampei02 at tiscali.it <mailto:sampei02 at tiscali.it> wrote:
> 
>> My distro is Centos7 and rsyslog is enabled and It’s  configured to
>> write to /var/log/messages; it’s the default behaviour. But how can I
>> avoid Squid writes into this file? I chose the Squid default log
>> files which are contained into /var/log/squid/ folder.
> 
> You already know from other responses that removing "-s" from your Squid
> command line options is the primary solution for stopping Squid from
> logging to syslog, but I wanted to add a caveat:
> 
> * Some Squid messages are only logged to syslog.
>  Those messages are logged to syslog regardless of the "-s" presence.
>  I suspect they may also disregard the "-l facility" setting.
> 
> ... where "logged to syslog" should be interpreted as "sent to the
> syslog daemon", of course.
> 
> IMO, this caveat is essentially a Squid bug.
> 
> You can prevent all Squid messages from appearing in system log files by
> configuring your syslog daemon accordingly.
> 
> 
> HTH,
> 
> Alex.
> 
> 
>>> On 21 Dec 2020, at 11:31, Ambrose Li wrote:
>>> 
>>> On Mon, Dec 21, 2020 at 11:01:07PM +1300, Amos Jeffries wrote:
>>>> On 21/12/20 9:55 pm, sampei02 at tiscali.it <mailto:sampei02 at tiscali.it> wrote:
>>>>> Ok, I noted these 2 squid processes:
>>>>> 
>>>>> root		/usr/sbin/squid -sYC
>>>>> squid       (squid-1) --kid squid-1 -sYC
>>>>> 
>>>>> -s means "Enable logging to syslog”
>>>>> 
>>>>> This option ‘-s’ could explain writing to messages ?
>>>> 
>>>> Squid does not write to /var/log/messages. On startup before Squid reads any
>>>> configuration about whether cache.log or syslog is to be used it logs to
>>>> stderr.
>>>> 
>>>> That stderr channel is handled by whatever init system or shell is starting
>>>> Squid. /var/log/messages is the init system log file.
>>> 
>>> Actually no, /var/log/messages is not an init system log file; on some Linux
>>> distros it is a default log location for syslog.
>>> 
>>> I can confirm that squid will write to /var/log/messages if syslog logging is
>>> enabled AND syslog is configured to write to /var/log/messages (this is the
>>> default behaviour on some Linux distributions, such as Debian, but not Ubuntu).
>>> 
>>> 
>>> -- 
>>> Ambrose Li <ambrose.li at gmail.com> | Time zone: GMT-5 (Eastern)
>>> ambroseli.ca
>>> 
>>> “Any organization which designs a system… will inevitably produce a
>>> design whose structure is a copy of the organization’s communication
>>> structure.” — Conway’s Law
>>> 
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>> 
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