I finally got this working.
There is good discussion on this error
here: https://bugzilla.redhat.com/show_bug.cgi?id=645193
"the problem can be bypassed by telling SELinux to allow httpd to execute
code from the tmp directory, for which there's apparently now a special
flag. I haven't tried myself, but it looks like the command
setsebool httpd_tmp_exec on"
allowing httpd to execute code on tmp directory, in addition to other things
I've tried, solved my problem. Now I can import numpy and cv2 both.
On Saturday, October 12, 2013 11:08:10 AM UTC-4, Bhaarat Sharma wrote:
>
> Sorry for so many messages but I'm trying to share as much info as
> possible to get over this hurdle.
>
> I have been able to resolve the "Unable to change working directory to
> '/home/bhaarat'." error in error_log by specifying a home directory in
> WSGIDaemonProcess like this:
>
> WSGIDaemonProcess /processimages user=bhaarat group=bhaarat processes=2
> threads=3 home=/var/www/webpy-app/ display-name=%{GROUP}
>
> However, when I access the url: curl --insecure "
> https://localhost/processimages?color=red&shade=dark"; I still get
> internal server error and the error I posted earlier in ssl_error_log:
>
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] mod_wsgi
> (pid=10910): Target WSGI script '/var/www/webpy-app/service.py' cannot be
> loaded as Python module.
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] mod_wsgi
> (pid=10910): Exception occurred processing WSGI script
> '/var/www/webpy-app/service.py'.
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] Traceback (most
> recent call last):
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] File
> "/var/www/webpy-app/service.py", line 11, in <module>
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] import numpy
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] File
> "/usr/local/lib/python2.7/site-packages/numpy-1.7.1-py2.7-linux-x86_64.egg/numpy/__init__.py",
>
> line 155, in <module>
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] import
> ctypeslib
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] File
> "/usr/local/lib/python2.7/site-packages/numpy-1.7.1-py2.7-linux-x86_64.egg/numpy/ctypeslib.py",
>
> line 60, in <module>
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] import ctypes
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] File
> "/usr/local/lib/python2.7/ctypes/__init__.py", line 555, in <module>
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] _reset_cache()
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] File
> "/usr/local/lib/python2.7/ctypes/__init__.py", line 279, in _reset_cache
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128]
> CFUNCTYPE(c_int)(lambda: None)
> [Sat Oct 12 15:00:54 2013] [error] [client 10.10.41.128] MemoryError
>
> On Saturday, October 12, 2013 9:51:13 AM UTC-4, Bhaarat Sharma wrote:
>>
>> So I've even started WSGI as daemon process. I got over the "Service
>> temporary unavailable" hurdle by going over the documentation.
>>
>> Finally I have the following in my httpd.conf
>>
>> WSGISocketPrefix run/wsgi
>> WSGIDaemonProcess /processimages user=bhaarat group=bhaarat processes=20
>> threads=30 display-name=%{GROUP}
>> WSGIProcessGroup /processimages
>> WSGIPythonHome /usr/local
>> WSGIPythonPath /usr/local/lib/python2.7/site-packages/
>> WSGIScriptAlias /processimages /var/www/webpy-app/service.py
>> #Alias /processimages/static /var/www/webpy-app/static
>>
>> ....
>> <Directory /var/www/webpy-app/>
>> WSGIApplicationGroup %{GLOBAL}
>> Order deny,allow
>> Allow from all
>> </Directory>
>>
>> Now, putting "import numpy" results in the following errors:
>>
>> In error_log:
>>
>> [alert] (13)Permission denied: mod_wsgi (pid=8396): Unable to change
>> working directory to '/home/bhaarat'.
>>
>> In ssl_error_log:
>>
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128] mod_wsgi
>> (pid=8380): Target WSGI script '/var/www/webpy-app/service.py' cannot be
>> loaded as Python module.
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128] mod_wsgi
>> (pid=8380): Exception occurred processing WSGI script
>> '/var/www/webpy-app/service.py'.
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128] Traceback (most
>> recent call last):
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128] File
>> "/var/www/webpy-app/service.py", line 11, in <module>
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128] import numpy
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128] File
>> "/usr/local/lib/python2.7/site-packages/numpy-1.7.1-py2.7-linux-x86_64.egg/numpy/__init__.py",
>>
>> line 155, in <module>
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128] import
>> ctypeslib
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128] File
>> "/usr/local/lib/python2.7/site-packages/numpy-1.7.1-py2.7-linux-x86_64.egg/numpy/ctypeslib.py",
>>
>> line 60, in <module>
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128] import ctypes
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128] File
>> "/usr/local/lib/python2.7/ctypes/__init__.py", line 555, in <module>
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128]
>> _reset_cache()
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128] File
>> "/usr/local/lib/python2.7/ctypes/__init__.py", line 279, in _reset_cache
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128]
>> CFUNCTYPE(c_int)(lambda: None)
>> [Sat Oct 12 13:44:49 2013] [error] [client 10.10.41.128] MemoryError
>>
>>
>> I'm starting httpd as "sudo service httpd start"
>>
>>
>>
>>
>> On Saturday, October 12, 2013 8:20:24 AM UTC-4, Bhaarat Sharma wrote:
>>>
>>> I found that WSGIApplicationGroup should be under the <Directory tag. So
>>> now I have this in my httpd.conf
>>>
>>> WSGIPythonHome /usr/local
>>> WSGIPythonPath /usr/local/lib/python2.7/site-packages/
>>> #WSGIDaemonProcess /processimages user=bhaarat group=bhaarat processes=2
>>> threads=3 display-name=%{GROUP}
>>> #WSGIProcessGroup /processimages
>>> WSGIScriptAlias /processimages /var/www/webpy-app/service.py
>>> Alias /processimages/static /var/www/webpy-app/static
>>>
>>> <Directory /var/www/webpy-app/>
>>> WSGIApplicationGroup %{GLOBAL}
>>> Order deny,allow
>>> Allow from all
>>> </Directory>
>>>
>>> But this change did not help either ;(
>>>
>>>
>>>
>>> On Saturday, October 12, 2013 8:07:42 AM UTC-4, Bhaarat Sharma wrote:
>>>>
>>>> Thanks for the reply. However, that did not work. I added the
>>>> WSGIAplicationGroup to my httpd.conf like this:
>>>>
>>>> WSGIPythonHome /usr/local
>>>> WSGIPythonPath /usr/local/lib/python2.7/site-packages/
>>>> WSGIApplicationGroup %{GLOBAL}
>>>> WSGIScriptAlias /processimages /var/www/webpy-app/service.py
>>>>
>>>> However, the Internal server error is still there when I add "import
>>>> numpy". Additionally, when I comment out "import numpy" and instead add
>>>> "import cv2" I see an error in error_log that says "[error] ImportError:
>>>> numpy.core.multiarray failed to import"
>>>>
>>>> As a daemon service. I tried adding the following to my httpd.conf
>>>>
>>>> WSGIPythonHome /usr/local
>>>> WSGIPythonPath /usr/local/lib/python2.7/site-packages/
>>>> WSGIApplicationGroup %{GLOBAL}
>>>> WSGIDaemonProcess /processimages user=bhaarat group=bhaarat processes=2
>>>> threads=25
>>>> WSGIProcessGroup /processimages
>>>> WSGIScriptAlias /processimages /var/www/webpy-app/service.py
>>>>
>>>> However, after restarting the httpd service and trying to visit that
>>>> page I got this error: "Service Temporarily Unavailable"
>>>>
>>>> Thanks for help again
>>>>
>>>>
>>>>
>>>> On Friday, October 11, 2013 10:31:00 PM UTC-4, Graham Dumpleton wrote:
>>>>>
>>>>> Try adding to the Apache configuration:
>>>>>
>>>>> WSGIApplicationGroup %{GLOBAL}
>>>>>
>>>>> The bumpy module is from memory one which will not work in sub
>>>>> interpreters, so you need to force it to run in the main global
>>>>> interpreter, which is what the directive does.
>>>>>
>>>>> I would also suggest you look into using daemon mode of mod_wsgi if
>>>>> you aren't already.
>>>>>
>>>>> Graham
>>>>>
>>>>> On 12/10/2013, at 4:34 AM, Bhaarat Sharma <bhaa...@gmail.com> wrote:
>>>>>
>>>>> Additionally, Initially i did not install python with --enable-shared
>>>>> but later I did the following:
>>>>>
>>>>> sudo make distclean
>>>>> ./configure --prefix=/usr/local --enable-shared
>>>>> make && make altinstall
>>>>>
>>>>> However still no good.
>>>>>
>>>>> Some more information:
>>>>>
>>>>> >>> numpy.version.version
>>>>> '1.7.1'
>>>>> >>> import cv2
>>>>> >>> cv2.__version__
>>>>> '2.4.4'
>>>>>
>>>>>
>>>>> On Friday, October 11, 2013 11:47:39 AM UTC-4, Bhaarat Sharma wrote:
>>>>>>
>>>>>> I am trying to use numpy in a web.py script being used in mod_wsgi.
>>>>>> However, if I try to "import numpy" I get an "Internal Server Error"
>>>>>> with
>>>>>> nothing in the error_log. I'm out of ideas of how to resolve this
>>>>>> problem.
>>>>>> I've following the installations instructions and ensured everything.
>>>>>>
>>>>>> I've verified that a simple web.py script without the 'import numpy'
>>>>>> works perfectly fine.
>>>>>>
>>>>>> Here are the details of my setup:
>>>>>>
>>>>>> *Everything works fine from interpreter:*
>>>>>>
>>>>>> $ python
>>>>>> Python 2.7.3 (default, Oct 8 2013, 15:53:09)
>>>>>> [GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2
>>>>>> Type "help", "copyright", "credits" or "license" for more
>>>>>> information.
>>>>>> >>> import cv2
>>>>>> >>> import numpy
>>>>>> >>> import sys
>>>>>> >>> sys.prefix
>>>>>> '/usr/local'
>>>>>>
>>>>>> *I configured mod_wsgi like this:*
>>>>>>
>>>>>> ./configure --with-python=/usr/local/bin/python2.7 --with
>>>>>> -apxs=/usr/sbin/apxs
>>>>>> LD_RUN_PATH=/usr/local/lib/ make
>>>>>> sudo make install
>>>>>>
>>>>>> *Ensuring that mod_wsgi is configured properly:*
>>>>>>
>>>>>> $ ldd /usr/lib64/httpd/modules/mod_wsgi.so
>>>>>> linux-vdso.so.1 => (0x00007fff36dff000)
>>>>>> libpython2.7.so.1.0 => /usr/local/lib/libpython2.7.so.1.0 (
>>>>>> 0x00007f9462710000)
>>>>>> libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f94624e8000)
>>>>>> libdl.so.2 => /lib64/libdl.so.2 (0x00007f94622e4000)
>>>>>> libutil.so.1 => /lib64/libutil.so.1 (0x00007f94620e1000)
>>>>>> libm.so.6 => /lib64/libm.so.6 (0x00007f9461e5c000)
>>>>>> libc.so.6 => /lib64/libc.so.6 (0x00007f9461ac9000)
>>>>>> /lib64/ld-linux-x86-64.so.2 (0x00007f9462d15000)
>>>>>>
>>>>>> *Added the following to httpd.conf*
>>>>>>
>>>>>> WSGIPythonHome /usr/local
>>>>>> WSGIPythonPath /usr/local/lib/python2.7/site-packages/
>>>>>>
>>>>>> *Site-packages directory contains the following:*
>>>>>>
>>>>>> cv2.so
>>>>>> cv.py
>>>>>> distribute-0.6.35-py2.7.egg
>>>>>> easy-install.pth
>>>>>> numpy-1.7.1-py2.7-linux-x86_64.egg
>>>>>> README
>>>>>> setuptools-0.6c11-py2.7.egg-info
>>>>>> setuptools.pth
>>>>>> web.py-0.37-py2.7.egg
>>>>>>
>>>>>> *Here is my script:*
>>>>>>
>>>>>> import web
>>>>>> import json
>>>>>> import numpy as np
>>>>>>
>>>>>> urls = (
>>>>>> '.*', 'Sample'
>>>>>> )
>>>>>>
>>>>>> class Sample:
>>>>>> def GET(self):
>>>>>> user_data = web.input()
>>>>>> return json.dumps(self.perform(user_data.color,
>>>>>> user_data.shade))
>>>>>>
>>>>>> def perform (self,color, shade):
>>>>>> return {'color': color, 'shade': shade}
>>>>>>
>>>>>> application = web.application(urls, globals()).wsgifunc()
>>>>>>
>>>>>> *I have the following files:*
>>>>>>
>>>>>> $ sudo find / -name libpython2.7.a
>>>>>> /usr/local/lib/python2.7/config/libpython2.7.a
>>>>>> /usr/local/lib/libpython2.7.a
>>>>>>
>>>>>> $ sudo find / -name libpython2.7.so*
>>>>>> /usr/local/lib/libpython2.7.so
>>>>>> /usr/local/lib/libpython2.7.so.1.0
>>>>>> /usr/lib/libpython2.7.so
>>>>>> /usr/lib/libpython2.7.so.1.0
>>>>>>
>>>>>> *and my Python2.7 config directory has these files:*
>>>>>>
>>>>>> config.c
>>>>>> config.c.in
>>>>>> install-sh
>>>>>> libpython2.7.a
>>>>>> libpython2.7.so -> ../../libpython2.7.so
>>>>>> libpython2.7.so.1.0 -> ../../libpython2.7.so.1.0
>>>>>> Makefile
>>>>>> makesetup
>>>>>> python.o
>>>>>> Setup
>>>>>> Setup.config
>>>>>> Setup.local
>>>>>>
>>>>>> I'll appreciate any help
>>>>>>
>>>>>
>>>>> --
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>>>>>
>>>>>
>>>>>
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