trying to use mod_wsgi for the first time for my pyramid app, but I keep getting an ImportError: No module named deploy when I try to access the site
in my /etc/apache2/sites-available/domain.com
<VirtualHost *:80>
ServerName domain.com
ServerAlias www.domain.com
ServerAdmin admin@domain.com
DocumentRoot /data/app
ErrorLog /data/app/apache_error.log
WSGIApplicationGroup %{GLOBAL}
WSGIPassAuthorization On
WSGIDaemonProcess pyramid user=www-data group=www-data \
processes=2 threads=4 \
python-path=/data/app/lib/python2.6/site-packages/
WSGIScriptAlias / /data/app/pyramid.wsgi
<Directory /data/app>
WSGIProcessGroup pyramid
Order allow,deny
Allow from all
</Directory>
</VirtualHost>
in /data/app/pyramid.wsgi
venv = '/data/app/bin/activate_this.py'
execfile(venv, dict(__file__=venv))
ALLDIRS = ['/data/app/lib/python2.6/site-packages']
import sys, site, os
site.addsitedir('/data/app/lib/python2.6/site-packages')
sys.path.append('/data/app/app')
os.environ['PYTHON_EGG_CACHE'] = '/data/app/python-eggs'
from pyramid.paster import get_app, setup_logging
ini_path = '/data/app/app/development.ini'
setup_logging(ini_path)
application = get_app(ini_path, 'main')
when I try to access domain.com in my browser, I get the The server encountered an internal error or misconfiguration and was unable to complete your request error. Here's the print out of my error log
[Mon Apr 22 20:43:13 2013] [error] test
[Mon Apr 22 20:43:13 2013] [error] mod_wsgi (pid=6795): Target WSGI script '/data/app/pyramid.wsgi' cannot be loaded as Python module.
[Mon Apr 22 20:43:13 2013] [error] mod_wsgi (pid=6795): Exception occurred processing WSGI script '/data/app/pyramid.wsgi'.
[Mon Apr 22 20:43:13 2013] [error] Traceback (most recent call last):
[Mon Apr 22 20:43:13 2013] [error] File "/data/app/pyramid.wsgi", line 30, in <module>
[Mon Apr 22 20:43:13 2013] [error] from pyramid.paster import get_app, setup_logging
[Mon Apr 22 20:43:13 2013] [error] File "/data/app/lib/python2.6/site-packages/pyramid-1.4-py2.6.egg/pyramid/paster.py", line 3, in <module>
[Mon Apr 22 20:43:13 2013] [error] from paste.deploy import (
[Mon Apr 22 20:43:13 2013] [error] ImportError: No module named deploy
Note that the print of test on the first line is from my manually-added print 'test' at the top of /data/app/lib/python2.6/site-packages/pyramid-1.4-py2.6.egg/pyramid/paster.py to make sure it is loading from the file that I expected...
now if I start the app from pserve
$ /bin/pserve app/development.ini --reload
the app is started successfully, console log below
test
Starting subprocess with file monitor
test
Starting server in PID 9132.
serving on http://0.0.0.0:6543
I also tried going into python directly to import paster.py, no problem as well
$ cd /data/app/lib/python2.6/site-packages/pyramid-1.4-py2.6.egg/pyramid/
$ /data/app/bin/python
Python 2.6.5 (r265:79063, Oct 1 2012, 22:04:36)
[GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyramid.paster as p
test
>>> print p.__file__
/data/app/lib/python2.6/site-packages/pyramid-1.4-py2.6.egg/pyramid/paster.pyc
>>>
permissions should be fine as well
$ ls /data/app -l
-rw-rw-r-- 1 root www-data 4148 2013-04-22 21:06 apache_error.log
drwxrwsr-x 4 root www-data 4096 2013-04-22 12:05 app
drwxrwsr-x 2 root www-data 4096 2013-04-22 12:04 bin
drwxrwsr-x 2 root www-data 4096 2013-04-22 11:58 include
drwxrwsr-x 3 root www-data 4096 2013-04-22 11:58 lib
-rwxrwxr-x 1 root www-data 893 2013-04-22 12:23 pyramid.wsgi
drwxrwsr-x 2 root www-data 4096 2013-04-22 12:07 python-eggs
what am I missing? thanks!
Edit
www-data is the correct user as well
$ ps aux | grep apache2
root 2599 0.0 1.4 185200 14552 ? Ss 10:00 0:02 /usr/sbin/apache2 -k start
www-data 9064 0.0 0.8 185664 8940 ? Sl 21:06 0:00 /usr/sbin/apache2 -k start
www-data 9065 0.0 0.8 185664 8940 ? Sl 21:06 0:00 /usr/sbin/apache2 -k start
www-data 9095 0.0 1.1 187292 11388 ? S 21:06 0:00 /usr/sbin/apache2 -k start
www-data 9096 0.0 1.1 187292 11388 ? S 21:06 0:00 /usr/sbin/apache2 -k start
www-data 9097 0.0 1.0 186768 10472 ? S 21:06 0:00 /usr/sbin/apache2 -k start
www-data 9098 0.0 1.0 186768 10472 ? S 21:06 0:00 /usr/sbin/apache2 -k start
www-data 9099 0.0 1.0 186768 10472 ? S 21:06 0:00 /usr/sbin/apache2 -k start
root 9189 0.0 0.0 7624 912 pts/0 S+ 21:42 0:00 grep apache2
Edit per Graham's suggestion, i replaced print 'test' in the paste.py with
import paste as p
print p.__path__
the printout when accessing the site through apache was /usr/local/lib/python2.6/dist-packages/paste, not the virtualenv. I have added all the examples that I could fine online to point to my virtualenv in pyramid.wsgi as well as the pythonpath in the apache config file, but clearly I am still not getting it right. Where else do I try?
Solved it finally. From the console log it's obvious that my main python installation in /usr/local/lib has a paste module installed that does not have deploy handler defined.
RedBaron's comment to set WSGIPythonHome worked, but the problem is I have multiple apps so I cannot just point WSGIPythonHome globally to a specific app's virtualenv.
Anyhow, I went through mod_wsgi docs on virtualenv again (https://code.google.com/p/modwsgi/wiki/VirtualEnvironments#Baseline_Environment) and saw that WSGIPythonHome should be pointing to a "virgin environment". literally
$ virtualenv --no-site-packages BASELINE
and then pointing WSGIPythonHome
WSGIPythonHome /usr/local/pythonenv/BASELINE
and point WSGIDaemonProcess to my app's specific virtualenv (which I already did at the beginning)
LESSON LEARNT: Pay more attention to the docs...
Finally, my pyramid.wsgi can be greatly simplified to only the following
import os
os.environ['PYTHON_EGG_CACHE'] = '/data/app/python-eggs'
from pyramid.paster import get_app, setup_logging
ini_path = '/data/app/app/development.ini'
setup_logging(ini_path)
application = get_app(ini_path, 'main')
In my case reinstalling PasteDeploy in the virtual environment fixed the problem, not sure why though.
The error would indicate that the PasteDeploy package is not installed.
来源：https://stackoverflow.com/questions/16160999/no-module-named-deploy-when-trying-to-start-pyramid-app-with-mod-wsgi