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Re: Fine tuning of Squid and OS configuration for handling more loads

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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
> ------------------------------------------------------
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