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From Paras Fadte <plf...@gmail.com>
Subject Re: Using gzip and CustomLog
Date Wed, 21 Jan 2009 14:45:12 GMT
Thanks for the response.

Noticed that graceful apache restart tends to flush the buffer to log
when gzip is used . Can you please shed some light on combining/using
gzip and rotatelogs utility together ?

-Paras

On Wed, Jan 21, 2009 at 7:46 PM, Rainer Jung <rainer.jung@kippdata.de> wrote:
> On 21.01.2009 13:01, Paras Fadte wrote:
>>
>> I tried this and It creates "mydomain.com-access_log.gz" but doesn't
>> seem to update it.
>
> That's the buffering of gzip I mentioned.
>
> Run /path/to/httpd/bin/ab -n 50000 -c 10 -k http://myserver:myport/
>
> and you'll see data arriving.
>
> Regards,
>
> Rainer
>
>> On Wed, Jan 21, 2009 at 4:27 PM, Rainer Jung<rainer.jung@kippdata.de>
>>  wrote:
>>>
>>> On 21.01.2009 07:09, Paras Fadte wrote:
>>>>
>>>> Hi ,
>>>>
>>>> Does something like following work in Apache/2.0.55 ?
>>>>
>>>> CustomLog "|/bin/gzip  -c
>>>>>>
>>>>>> /home/mydir/apache/logs/mydomain.com-access_log.gz" combined
>>>>
>>>> In errorlog it says :
>>>>
>>>> piped log program '/bin/gzip  -c
>>>>>>
>>>>>> /home/mydir/apache/logs/mydomain.com-access_log.gz' failed
>>>>
>>>> unexpectedly
>>>> gzip:>>/home/mydir/apache/logs/mydomain.com-access_log.gz: No such
>>>> file or directory
>>>>
>>>>
>>>> What could be the issue here ?
>>>
>>> It does work for me with Apache 2.2.x. Be sure to add whitespace before
>>> and
>>> after ">>" (although that wasn't necessary for 2.2.x).
>>>
>>> If it doesn't work for 2.0, you can use the following workaround, that
>>> should do it: create gzip.sh (executable shell script) with the content:
>>>
>>> #!/bin/sh
>>> gzip -c>>  $1
>>>
>>> and use "|/path/to/gzip.sh mylogfile" in the CustomLog.
>>>
>>> Caution: it's possible to loose log lines when restarting or stopping the
>>> web server, because gzip buffers data and it might be implementation
>>> dependent, whether gzip flushes them when signaled to stop. My tests
>>> show,
>>> that there will be some information lost.
>>>
>>> I think this discussion belongs to the users list. When proceeding the
>>> discussion there, also mention which OS you are using.
>>>
>>> Regards,
>>>
>>> Rainer
>

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