[Qgis-developer] Use Nginx to serve QGIS Server ?

[kimaidou]

Hi all,

Thanks a lot Larry for this detailed answer ! I will give uWSGI a try to
spawn QGIS Server, and use php-fpm to boost Lizmap php proxy scripts.
I will report my progress here as soon as I can

Cheers,

Michael

2014-11-26 19:48 GMT+01:00 Larry Shaffer <larrys at dakotacarto.com>:

> Hi Michael,
>
> On Wed, Nov 26, 2014 at 8:30 AM, kimaidou <kimaidou at gmail.com> wrote:
>
>> Hi list,
>>
>> I would like to try Nginx / php-fpm as a replacement of Apache /
>> mod_fcgid for Lizmap Web Client. I have googled a bit and found that it
>> shall be possible to do so. Cf links [1] and [2] below
>>
>> In [2], it seems that Larry would like to publish a recipe to achieve
>> this.
>>
>> Larry, or anyone else, could point me toward the right direction ?
>>
>
> Yes, I can help with generating some recipes for serving QGIS Server,
> beyond Apache. I would like to see recipes for nginx and lighttpd included.
> Both require independent spawning of the FCGI binary as a separate process,
> and lighttpd has good FastCGI support via its internal (or exernal)
> spawn-fcgi utility. See links [0, 1, 2].
>
> It is important to offer a solid, thoroughly tested nginx recipe as it is
> a commonly available Web server nowadays, and it uses very little in the
> way of resources (so good for low-RAM VPS setups). I personally don't serve
> any maps to enough users to properly test heavy loads. Will need help from
> other devs with load testing the recipes.
>
> For nginx, you can also use spawn-fcgi (or fcgiwrap, etc.) but I have
> found the uWSGI [3] process manager to work very well with nginx. uWSGI
> also is beneficial for deploying the Python-based search functionality
> offered in the QGIS Web Client. While there are only a few examples of
> serving/spawning FastCGI under uWSGI (here's a simple one [4]), it is fully
> supported like many of the other protocols in uWSGI.
>
> IMO, uWSGI offers the most configurable and flexible process manager, and
> can work well as a QGIS Server backend manager to almost any Web server
> frontend, e.g. nginx, lighttpd, Cherokee, Apache, etc, and on all platforms.
>
> Of note: I used a lighttpd/spawn-fcgi setup for doing the labeling tests
> for Server. See [5, 6] (has some lightweight, non-production spawning
> script samples for Debian and Mac). One reason for this setup choice is
> that both tools now have a CMake build and could conceivably be a
> dependency for embedding a Server instance *inside* of the QGIS desktop
> application (for previewing Server output, without the need for any server
> setup on the part of the user).
>
> Concerning php-fpm, I believe that is only for managing a PHP FastCGI
> implementation and is now part of PHP source. I don't think it can be used
> to manage a QGIS Server process. It seems like a good fit for LizMap
> server-side PHP scripting, though.
>
> I also think it would be good to offer a tutorial on combining QGIS Server
> with other tools, like MapProxy [7], which is readily installable alongside
> OSGeo4W [8].
>
> [0] http://wiki.nginx.org/FcgiExample
> [1] http://chriswu.me/blog/writing-hello-world-in-fcgi-with-c-plus-plus/
> [2] http://redmine.lighttpd.net/projects/spawn-fcgi/wiki
> [3] https://uwsgi-docs.readthedocs.org/en/latest/
> [4] http://stackoverflow.com/a/24380105/2865523
>
> [5]
> https://github.com/qgis/QGIS/tree/master/tests/testdata/qgis_local_server
> [6]
> https://github.com/qgis/QGIS/blob/master/tests/src/python/qgis_local_server.py
>
> [7] http://mapproxy.org/
> [8] http://mapproxy.org/docs/1.6.0/install_osgeo4w.html
>
> Regards,
>
> Larry Shaffer
> Dakota Cartography
> Black Hills, South Dakota
>
>
>>
>> [1] https://github.com/cccs-web/core/wiki/Install-QGIS-Server-under-Nginx
>> [2] http://lists.osgeo.org/pipermail/qgis-user/2014-July/028267.html
>>
>> Thanks in advance,
>>
>> Michael
>>
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>
>
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