[Qgis-user] QGIS-Server write log on stdoutput ?

[Andrea Peri]

Hi, Larry.

Thx for hint.

I set the two variables and the log file is create.
:)

But unfortunately it is absolutely empty.
:(

It seem the qgis-server will crash quite istantaneously.

As I report before , I Guess this is something due to the qgis project
because another project will work without any problem.

So I set a local environment and run the qgis-server from a shell with
a gdb debug to see effectively what it send to stdout.

This is what it report:

...................
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Warning 1: Unable to find driver ECW to unload from GDAL_SKIP
environment variable.
Warning 1: Unable to find driver ECW to unload from GDAL_SKIP
environment variable.
Warning 1: Unable to find driver JP2ECW to unload from GDAL_SKIP
environment variable.
Warning 1: Unable to find driver ECW to unload from GDAL_SKIP
environment variable.
Warning 1: Unable to find driver JP2ECW to unload from GDAL_SKIP
environment variable.
[New Thread 0x7fffe307c700 (LWP 823)]
[New Thread 0x7fffe27ea700 (LWP 824)]

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff0e50421 in __dynamic_cast ()
   from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
(gdb)
..................

I see the version my linux run is the
        libstdc++.so.6 (libc6,x86-64) =>
/usr/lib/x86_64-linux-gnu/libstdc++.so.6

There is some know issue of qgis-server with the libstdc++.so.6
?

2014-06-21 20:53 GMT+02:00 Larry Shaffer <larrys at dakotacarto.com>:
> Hi Andrea,
>
> You can set the QGIS_LOG_FILE environment variable to have the
> qgis_mapserv.fcgi process log to a file. It needs to be set within the
> server process environment (if it has a loadable FCGI module) or within the
> FCGI-spawning process environment, e.g. uWSGI or spawn-fcgi.
>
> For Apache:
>
> <IfModule mod_fastcgi.c>  (or mod_fcgid.c)
>   ...
>   SetEnv QGIS_LOG_FILE /path/to/qgis_server.log
> </IfModule>
>
> Of course, the log needs to be writable by your Apache or FCGI-spawning
> process user.
>
> NOTE: if using latest master builds (or upcoming 2.4 release), the env var
> is now QGIS_SERVER_LOG_FILE, with the new env var QGIS_SERVER_LOG_LEVEL to
> define verbose level [0,1].
>
> I haven't tested this, but the amount of debug output is usually relative to
> the CMake build type, e.g. Release vs. RelWithDebInfo or Debug, like is the
> case for the QGIS desktop output. Pretty sure that is always a compile-time
> choice, and can't be be overridden at run-time. Your qgis_mapserv.fcgi
> binary may need to be (re)built as RelWithDebInfo or Debug to trigger enough
> output to debug your issue.
>
> [0]
> https://github.com/qgis/QGIS/commit/29c39b9f0209ddedd0d51eda1dc926e6e0f2ea9e
> [1]
> https://github.com/qgis/QGIS/commit/bdf1ac8d46d89869e58884c5f55ff711a1f5f76d
>
> Regards,
>
> Larry Shaffer
> Dakota Cartography
> Black Hills, South Dakota
>
>
> On Sat, Jun 21, 2014 at 9:25 AM, Andrea Peri <aperi2007 at gmail.com> wrote:
>>
>> Hi,
>>
>> Our qgis-server is crashing on a project .
>> This is quite strange because on the same project on a qi-desktop (on
>> another machine) it run without any problem.
>> And also the qgis-server run without any problem with another different
>> project.
>>
>> I try to read from the log of server web to see any useful information
>> but the log none report of qgis.
>> The web server ,og come from the stdout so perhaps there is some
>> specific setting to say to QS to output to stdout log ?
>>
>> Thx,
>>
>>
>> --
>> -----------------
>> Andrea Peri
>> . . . . . . . . .
>> qwerty àèìòù
>> -----------------
>> _______________________________________________
>> Qgis-user mailing list
>> Qgis-user at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>
>



-- 
-----------------
Andrea Peri
. . . . . . . . .
qwerty àèìòù
-----------------