[squid-users] Fine tuning of Squid and OS configuration for handling more loads

[pvs]

Hi Alex,

cache.log file is attached with contents narrowed down to the time just 
before squid process oscillating (going up and down), ultimately dying.


Regards,

Vishnu


On 08-04-2022 19:09, Alex Rousskov wrote:
> On 4/8/22 05:56, pvs wrote:
>
> > sudo /usr/squid/5.2/sbin/squid -f /etc/squid/squid.conf
>
> Next time, try starting Squid from the console/terminal using the 
> following command:
>
>     sudo /usr/squid/5.2/sbin/squid -Nd1 -f /etc/squid/squid.conf
>
> This is _not_ the right way to start Squid in production, but it is a 
> good way to test whether you can get some error messages on the 
> console after Squid dies during this _test_ run.
>
>
> > I wanted to share cache.log file, but the size is too big.
>
> You can always share a link to a (compressed) log file or at least 
> copy-paste the last ~100 lines written just _before Squid exited_. The 
> exiting lines, if any, would be printed above the Squid startup lines 
> similar to these:
>
> > 2022/04/07 18:43:38.457| Created PID file (.../squid.pid)
> > 2022/04/07 18:43:38.459| Set Current Directory to /usr/local/squid/var
> > 2022/04/07 18:43:38.459| Starting Squid Cache version ...
>
> The other information you have provided was useful but not sufficient.
>
>
> Please keep this conversation on the squid-users list instead of 
> responding to me personally.
>
>
> Thank you,
>
> Alex.
>
>
> > On 07-04-2022 19:09, Alex Rousskov wrote:
> >> On 4/7/22 00:15, pvs wrote:
> >>
> >>> On the 3rd day morning all of a sudden squid process stopped, after
> >>> restarting it worked 10 minutes and again stopped, this process
> >>> repeated and finally we removed this squid from production network.
> >>
> >>> We tried to analyze the syslog file, squid access/cache log files,
> >>> not got any concrete clues.
> >>>
> >>> Any clues/ideas where i can look for additional info for the squid
> >>> process all of a sudden dying.
> >>
> >> How do you start Squid?
> >>
> >> How many "sbin/squid" or equivalent processes are running when
> >> everything is working OK?
> >>
> >> You may want to share "ps aux | fgrep squid" or similar output after
> >> starting Squid the usual way.
> >>
> >>
> >> If Squid knows that it is dying, then cache.log usually has a record
> >> of the cause of death. Squid will often known that it is dying, but
> >> there are exceptions. Squid will know less if you start it with a -C
> >> command line option.
> >>
> >> If Squid does not know that it is dying, then whatever scripts/system
> >> you used to start Squid may have a record of it. Usually, those
> >> messages go into syslog.
> >>
> >> I know you said you looked in cache.log and syslog, but perhaps there
> >> are some clues there that you consider unimportant. If anything is
> >> logged at the time of death, consider sharing those records.
> >>
> >>
> >> If there are really no traces anywhere, then you are doing something
> >> very unusual, but you should still be able to triage the issue if you
> >> start Squid by hand from the terminal (add "-d1" if you are not using
> >> that option already) and watch the console output at the time of
> >> death. You will also be able to collect the exit code of the top-level
> >> squid process this way -- another potential clue.
> >>
> >>
> >> HTH,
> >>
> >> Alex.
> >
> > --
> > Regards,
> >
> > पं. विष्णु शंकर        P. Vishnu Sankar
> > टीम लीडर                Team Leader-Network Operations
> > सी-डॉट                  C-DOT
> > इलैक्ट्रॉनिक्स सिटी फेज़ I    Electronics City Phase I
> > होसूर रोड बेंगलूरु          Hosur Road Bengaluru – 560100
> > फोन  Ph                91 80 25119466
> > ------------------------------------------------------

-- 
Regards,

पं. विष्णु शंकर		P. Vishnu Sankar
टीम लीडर                Team Leader-Network Operations
सी-डॉट                  C-DOT
इलैक्ट्रॉनिक्स सिटी फेज़ I    Electronics City Phase I
होसूर रोड बेंगलूरु          Hosur Road Bengaluru – 560100
फोन  Ph                91 80 25119466
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