[ckan-dev] Premature end of script headers when using ckanext-spatial

[Vitor Baptista]

Hi,

I figured out that SELinux is the culprit. If I disable it, everything goes
on fine. I tried following the instructions at
https://github.com/okfn/ckan/wiki/How-to-Install-CKAN-2.0-on-CentOS-6.3#adjust-the-selinux-file-contexts,
but that didn't work.

Looking at dmesg, I got:

type=1400 audit(1382056990.260:30750): avc:  denied  { execmem } for
>  pid=13011 comm="httpd" scontext=unconfined_u:system_r:httpd_t:s0
> tcontext=unconfined_u:system_r:httpd_t:s0 tclass=process
> httpd[13011] general protection ip:7fb21cca3bbd sp:7fb229fd4320 error:0 in
> _ctypes.so[7fb21cc95000+1a000]


So there was an execmem that was denied. But what now? How to give httpd
permissions?

Cheers,


2013/10/11 Vitor Baptista <vitor at vitorbaptista.com>

> Hi Adrià,
>
> That runs without problems, and if I'm able to run the server with paster
> as well, so the extension should be installed correctly. It's only when I
> try with Apache that I get that error.
>
> Do you have any other ideas of the possible culprit?
>
> Cheers,
>
>
> 2013/10/11 Adrià Mercader <adria.mercader at okfn.org>
>
>> Hi Vitor,
>>
>> I've never use the spatial extension on RHEL so not sure what might be
>> wrong. Have you tried running a command on paster (not via Apache)?
>>
>> Something like this on your virtualenv for instance:
>>
>> (pyenv) $ paster --plugin=ckanext-spatial spatial initdb
>> --config=/etc/ckan/default.ini
>>
>> Perhaps that gives us more clues
>>
>> Adrià
>>
>> On 11 October 2013 00:09, Vitor Baptista <vitor at vitorbaptista.com> wrote:
>> > Hi all,
>> >
>> > I'm trying to install ckanext-spatial on a RHEL6, but I'm getting some
>> > strange errors.
>> >
>> > I was able to configure PostGIS and it seems to be working fine on the
>> DB
>> > server. I've also installed ckanext-spatial and all of its dependencies
>> on
>> > the app server just fine, but whenever I add spatial_metadata or
>> > spatial_query to the plugins list, I get:
>> >
>> >> ==> /var/log/httpd/ckan_default.error.log <==
>> >> [Fri Oct 11 00:00:02 2013] [error]
>> >> /usr/lib/python2.6/site-packages/tw/core/view.py:223:
>> DeprecationWarning:
>> >> object.__new__() takes no parameters
>> >> [Fri Oct 11 00:00:02 2013] [error]   obj = object.__new__(cls, *args,
>> >> **kw)
>> >> [Fri Oct 11 00:00:03 2013] [error] [client 187.114.201.223] Premature
>> end
>> >> of script headers: apache.wsgi
>> >
>> >
>> >> ==> /var/log/httpd/error_log <==
>> >> [Fri Oct 11 00:00:04 2013] [notice] child pid 4135 exit signal
>> >> Segmentation fault (11)
>> >
>> >
>> > Googling around, it seems that it happens when somehow Apache is
>> running one
>> > version of a library, and your Python code is running another. I tried
>> > looking for possible culprits, but couldn't find any. The closest I
>> thought
>> > was geos that, as I installed this version:
>> >
>> >> geos.x86_64                        3.3.2-1.el6             @epel
>> >
>> >
>> > Running just geojson_preview works fine.
>> >
>> > Any ideas?
>> >
>> > Cheers,
>> >
>> > --
>> >
>> > Vítor Baptista
>> >
>> > Developer  |  http://vitorbaptista.com | LinkedIn | @vitorbaptista
>> >
>> > The Open Knowledge Foundation
>> >
>> > Empowering through Open Knowledge
>> >
>> > http://okfn.org/  |  @okfn  |  OKF on Facebook  |  Blog  |  Newsletter
>> >
>> >
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>>
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>
>
>
> --
>
> Vítor Baptista
>
> Developer  |  http://vitorbaptista.com | LinkedIn<http://www.linkedin.com/in/vitorbaptista>|
> @vitorbaptista <http://twitter.com/vitorbaptista>
>
> The Open Knowledge Foundation <http://okfn.org>
>
> *Empowering through Open Knowledge*
>
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>


-- 

Vítor Baptista

Developer  |  http://vitorbaptista.com |
LinkedIn<http://www.linkedin.com/in/vitorbaptista>|
@vitorbaptista <http://twitter.com/vitorbaptista>

The Open Knowledge Foundation <http://okfn.org>

*Empowering through Open Knowledge*

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