Totally new to python-based web apps, so I'm somewhat lost. Here is my apache error:
[Wed May 08 22:41:47 2013] [error] [client 64.56.91.45] mod_wsgi (pid=23704): Target WSGI script '/home/http/public/hello/hello.wsgi' cannot be loaded as Python module.
[Wed May 08 22:41:47 2013] [error] [client 64.56.91.45] mod_wsgi (pid=23704): Exception occurred processing WSGI script '/home/http/public/hello/hello.wsgi'.
[Wed May 08 22:41:47 2013] [error] [client 64.56.91.45] Traceback (most recent call last):
[Wed May 08 22:41:47 2013] [error] [client 64.56.91.45] File "/home/http/public/hello/hello.wsgi", line 3, in <module>
[Wed May 08 22:41:47 2013] [error] [client 64.56.91.45] from hello import app as application
[Wed May 08 22:41:47 2013] [error] [client 64.56.91.45] File "/home/http/public/hello/hello.py", line 1, in <module>
[Wed May 08 22:41:47 2013] [error] [client 64.56.91.45] from flask import Flask
[Wed May 08 22:41:47 2013] [error] [client 64.56.91.45] ImportError: No module named 'flask'
[Wed May 08 22:41:47 2013] [error] [client 64.56.91.45] File does not exist: /home/http/public/favicon.ico
Apparently, it cannot find the flask module. I've looked this up, and it seems that most people get it to work by appending the project directory to the path, like so: (hello.wsgi)
import sys
sys.path.insert(0, "/home/http/public/hello")
from hello import app as application
And here is hello.py:
from flask import Flask
app = Flask(__name__)
#app.route('/')
def hello_world():
return 'Hello World!'
if __name__ == '__main__':
app.run(host='0.0.0.0')
Works great when ran as python hello.py, however, throws a 500 error when browsing to host/hello. Here's the Apache configuration:
WSGIDaemonProcess hello user=http group=http threads=5
WSGIScriptAlias /hello "/home/http/public/hello/hello.wsgi"
<Directory /home/http/public/hello/>
WSGIProcessGroup hello
WSGIApplicationGroup %{GLOBAL}
Order deny,allow
Allow from all
</Directory>
I'm somewhat lost.
The mod_wsgi module is built against a specific Python version and can only work with that version. You cannot force it to use a different version. Thus if you have multiple versions installed, you need to make sure that you are installing your packages and running your code in development against the same version.
You can determine which Python version/installation mod_wsgi is using by running the test:
http://code.google.com/p/modwsgi/wiki/CheckingYourInstallation#Python_Installation_In_Use
Related
I have a simple flask app that i want to be accessible from internet.
OS is debian7, and unfortunately it can't be changed.
What I did:
- downloaded and installed Python3.4 into /usr/local/opt/python3.4.3
- installed wsgi lib for py3
- installed virtualenv and created new env in my flask project folder
- installed flask together with some other packages that I need within this env
- created VirtualHost as follows:
cat /etc/apache2/sites-available/Monitor
Listen 8080
<VirtualHost *:8080>
ServerName {ip address}
ServerAdmin {my email}
WSGIScriptAlias / /var/www/Monitor/monitor.wsgi
<Directory /var/www/Monitor/Monitor/>
Order allow,deny
Allow from all
</Directory>
Alias /static /var/www/Monitor/Monitor/static
<Directory /var/www/Monitor/Monitor/static/>
Order allow,deny
Allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/error.log
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
now when i try to access the app from the internet I see these errors in error.log
[Sat Nov 14 22:16:04 2015] [error] /usr/local/bin/python3
[Sat Nov 14 22:16:04 2015] [error] [client ip] mod_wsgi (pid=13450): Target WSGI script '/var/www/Monitor/monitor.wsgi' cannot be loaded as Python module.
[Sat Nov 14 22:16:04 2015] [error] [client ip] mod_wsgi (pid=13450): Exception occurred processing WSGI script '/var/www/Monitor/monitor.wsgi'.
[Sat Nov 14 22:16:04 2015] [error] [client ip] Traceback (most recent call last):
[Sat Nov 14 22:16:04 2015] [error] [client ip] File "/var/www/Monitor/monitor.wsgi", line 21, in <module>
[Sat Nov 14 22:16:04 2015] [error] [client ip] from Monitor import app as application
[Sat Nov 14 22:16:04 2015] [error] [client ip] File "/var/www/Monitor/Monitor/__init__.py", line 4, in <module>
[Sat Nov 14 22:16:04 2015] [error] [client ip] from flask import Flask, render_template, url_for
[Sat Nov 14 22:16:04 2015] [error] [client ip] File "/var/www/Monitor/Monitor/venv/lib/python3.4/site-packages/flask/__init__.py", line 17, in <module>
[Sat Nov 14 22:16:04 2015] [error] [client ip] from werkzeug.exceptions import abort
[Sat Nov 14 22:16:04 2015] [error] [client ip] File "/var/www/Monitor/Monitor/venv/lib/python3.4/site-packages/werkzeug/__init__.py", line 152, in <module>
[Sat Nov 14 22:16:04 2015] [error] [client ip] __import__('werkzeug.exceptions')
[Sat Nov 14 22:16:04 2015] [error] [client ip] File "/var/www/Monitor/Monitor/venv/lib/python3.4/site-packages/werkzeug/exceptions.py", line 113
[Sat Nov 14 22:16:04 2015] [error] [client ip] return u'<p>%s</p>' % escape(self.description)
[Sat Nov 14 22:16:04 2015] [error] [client ip] ^
[Sat Nov 14 22:16:04 2015] [error] [client ip] SyntaxError: invalid syntax
From what I could find in the internet, such errors appear when trying to start flask app with python version <= 3.3, which is not my case I think (how do i check?)
here is my wsgi that starts the app
#!/usr/bin/env python3
import os
import sys
import logging
logging.basicConfig(stream=sys.stderr)
PROJECT_DIR = '/var/www/Monitor/'
sys.path.insert(0, PROJECT_DIR)
def execfile(filename):
globals = dict(__file__ = filename)
exec(open(filename).read(), globals)
activate_this = '/var/www/Monitor/Monitor/venv/bin/activate_this.py'
execfile(activate_this)
from Monitor import app as application
Any help would be very much appreciated. Any additional information will be supplied if necessary.
Default Python3 on Debian 7 is 3.2.3, libapache2-mod-wsgi is in version 3.3.
You Apache run Your app with default Python because mod-wsgi has to be compiled against one and only one python version (in this case python 3.3).
mod-wsgi 3.3
If You want to run only one app (or many apps) with Python 3.4, try to recompile mod-wsgi with python 3.4
mod-wsgi 4.1.x or newer
This newer version of mod_wsgi provides a way of installing mod_wsgi against multiple Python versions and running up an Apache instance for each using a provided script. The script takes over all the setup of the Apache configuration so you do not need to worry about it.
https://pypi.python.org/pypi/mod_wsgi
old answer
To change Python version, set in Apache conf:
WSGIPythonHome /usr/local/opt/python3.4.3/
WSGIPythonPath /var/www/Monitor:/var/www/Monitor/Monitor/venv/lib/python3.4/site-packages:/usr/local/opt/python3.4.3/lib/site-packages
for details read https://code.google.com/p/modwsgi/wiki/ConfigurationDirectives#WSGIPythonHome
I cannot, for the life of me, find a simple way to configure a (Linode Debian 6) server correctly with Django 1.8, Python 2.7.3, and virtualenv. Here's the steps I took:
mkvirtualenv --python=/usr/bin/python2.7 curator
This creates a VirtualEnv for me under /srv/ve/.virtualenvs/curator
Now I run:
pip install django
And Django 1.8 is successfully installed. Then, I switch to /srv/www/curator and run:
django-admin startproject cmscore
I then follow the Django Apache mod_wsgi instructions and end up with an Apache conf file under my sites-available directory looking like this:
<VirtualHost *:80>
ServerName cms.example.com
ServerAlias cms.example.com cms.example2.com
ServerAdmin errors#example.com
DocumentRoot /srv/www/curator/public_html
WSGIDaemonProcess cms.example.com python-path=/srv/ve/.virtualenvs/curator/bin/python:/srv/ve/.virtualenvs/curator/lib/python2.7/site-packages
WSGIProcessGroup cms.example.com
WSGIScriptAlias / /srv/www/curator/cmscore/cmscore/wsgi.py
<Directory /srv/www/curator/cmscore/cmscore>
<Files wsgi.py>
Order deny,allow
Allow from all
</Files>
</Directory>
Alias /robots.txt /srv/www/curator/public_html/robots.txt
Alias /favicon.ico /srv/www/curator/public_html/favicon.ico
Alias /css /srv/www/curator/public_html/css
Alias /js /srv/www/curator/public_html/js
Alias /img /srv/www/curator/public_html/img
Alias /static/admin /srv/www/curator/public_html/admin
Alias /static /srv/www/curator/public_html/static
Alias /media /srv/www/curator/public_html/media
ErrorLog /srv/www/curator/logs/error.log
CustomLog /srv/www/curator/logs/access.log combined
</VirtualHost>
The Django docs mention an WSGIPythonPath directive, but I get an error that WSGIPythonPath cannot occur within <VirtualHost> section when I use this.
With this configuration I get a 500 error (well obviously, there's a lot of settings I haven't added yet for example) but not one that I would expect. I get this (IPs blanked by me):
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] mod_wsgi (pid=21802): Target WSGI script '/srv/www/curator/cmscore/cmscore/wsgi.py' cannot be loaded as Python module.
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] mod_wsgi (pid=21802): Exception occurred processing WSGI script '/srv/www/curator/cmscore/cmscore/wsgi.py'.
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] Traceback (most recent call last):
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] File "/srv/www/curator/cmscore/cmscore/wsgi.py", line 15, in <module>
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] from django.core.wsgi import get_wsgi_application
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] File "/srv/ve/.virtualenvs/curator/lib/python2.7/site-packages/django/__init__.py", line 1, in <module>
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] from django.utils.version import get_version
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] File "/srv/ve/.virtualenvs/curator/lib/python2.7/site-packages/django/utils/version.py", line 7, in <module>
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] from django.utils.lru_cache import lru_cache
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] File "/srv/ve/.virtualenvs/curator/lib/python2.7/site-packages/django/utils/lru_cache.py", line 28
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] fasttypes = {int, str, frozenset, type(None)},
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] ^
[Thu May 21 14:55:16 2015] [error] [client xxx.xxx.xxx.xxx] SyntaxError: invalid syntax
So, this appears to be an error which occurs when Django 1.8 is being using by an earlier version of Python than 2.7. To debug, I threw this into the top of my wsgi.py file:
import sys
activate_this = '/srv/ve/.virtualenvs/curator/bin/activate_this.py'
execfile(activate_this, dict(__file__=activate_this))
sys.stderr.write(sys.version)
And in my Apache error log, I see:
2.6.6 (r266:84292, Dec 27 2010, 00:18:12)
I've tried every trick that I can think of (tricks that worked with existing virtualenvs of Django 1.6 and Python 2.7 on the exact same server!) including shebangs pointing to the correct Python install in my manage.py file, but I cannot find any way to get this to work.
I know I'm missing something really obvious here, but I am blind to it, can anyone help?
I have a django (1.7) app that works pretty well on a Centos7 server. Now i moving to production server RHEL 6 and still have some issues.
The problem is the mod_wsgi.
The server config:
RHEL6
Apache 2.2
Django 1.7
Python 2.6
the apache error log
[Fri Feb 20 11:18:39 2015] [error] [client 127.0.0.1] mod_wsgi (pid=12827): Target WSGI script '/home/evtdb/FLWeb/FLWeb/wsgi.py' cannot be loaded as Python module.
[Fri Feb 20 11:18:39 2015] [error] [client 127.0.0.1] mod_wsgi (pid=12827): Exception occurred processing WSGI script '/home/evtdb/FLWeb/FLWeb/wsgi.py'.
[Fri Feb 20 11:18:39 2015] [error] [client 127.0.0.1] Traceback (most recent call last):
[Fri Feb 20 11:18:39 2015] [error] [client 127.0.0.1] File "/home/evtdb/FLWeb/FLWeb/wsgi.py", line 21, in <module>
[Fri Feb 20 11:18:39 2015] [error] [client 127.0.0.1] from django.core.wsgi import get_wsgi_application
[Fri Feb 20 11:18:39 2015] [error] [client 127.0.0.1] ImportError: No module named django.core.wsgi
[Fri Feb 20 11:18:39 2015] [error] [client 127.0.0.1] mod_wsgi (pid=12827): Target WSGI script '/home/evtdb/FLWeb/FLWeb/wsgi.py' cannot be loaded as Python module.
[Fri Feb 20 11:18:39 2015] [error] [client 127.0.0.1] mod_wsgi (pid=12827): Exception occurred processing WSGI script '/home/evtdb/FLWeb/FLWeb/wsgi.py'.
[Fri Feb 20 11:18:39 2015] [error] [client 127.0.0.1] Traceback (most recent call last):
[Fri Feb 20 11:18:39 2015] [error] [client 127.0.0.1] File "/home/evtdb/FLWeb/FLWeb/wsgi.py", line 21, in <module>
[Fri Feb 20 11:18:39 2015] [error] [client 127.0.0.1] from django.core.wsgi import get_wsgi_application
[Fri Feb 20 11:18:39 2015] [error] [client 127.0.0.1] ImportError: No module named django.core.wsgi
the rest of the important files
flweb.conf
WSGIScriptAlias / /home/evtdb/FLWeb/FLWeb/wsgi.py
WSGIDaemonProcess localhost python-path=/home/evtdb/FLWeb:/usr/lib/python2.6/site-packages
WSGIProcessGroup localhost
<VirtualHost 127.0.0.1:8080>
<Directory /home/evtdb/FLWeb/FLWeb>
<Files wsgi.py>
Order allow,deny
Allow from all
</Files>
</Directory>
</VirtualHost>
wsgi.py
"""
WSGI config for FLWeb project.
It exposes the WSGI callable as a module-level variable named ``application``.
For more information on this file, see
https://docs.djangoproject.com/en/1.7/howto/deployment/wsgi/
"""
import os
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "FLWeb.settings")
from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()
ldd modules/mod_wsgi.so
linux-vdso.so.1 => (0x00007fff6afff000)
libpython2.6.so.1.0 => /usr/lib64/libpython2.6.so.1.0 (0x00007fd69fc02000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fd69f9e5000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007fd69f7e0000)
libutil.so.1 => /lib64/libutil.so.1 (0x00007fd69f5dd000)
libm.so.6 => /lib64/libm.so.6 (0x00007fd69f359000)
libc.so.6 => /lib64/libc.so.6 (0x00007fd69efc4000)
/lib64/ld-linux-x86-64.so.2 (0x000000330aa00000)
I thought that a problem could be that mod_wsgi seems compiled with lib64, so I changed the python path on the flweb.conf to lib64 but it didn't worked
EDIT:
I realize the server has python 2.7 in /user/local/lib and that is the python version where django is installed. I changed the path in the conf file, but now I guess I need to rebuild the mod_wsgi
EDIT2:
Trying to rebuild mod_wsgi, have this problem
/usr/bin/ld: /usr/local/lib/libpython2.7.a(abstract.o): relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a shared object; recompile with -fPIC
according to https://code.google.com/p/modwsgi/wiki/InstallationIssues is a conflict between python that was compiled to 32 bit and mod_wsgi to 64
I created a website using django and am trying to set up mod_wsgi with my apache server.
When I go to my website I get this error:
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, root#localhost and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
This is the error log file I get when I try setting up mod_wsgi:
[Wed Jan 07 16:08:01 2015] [error] [client 108.200.246.4] mod_wsgi (pid=18513): Target WSGI script '/var/www/firstweb/firstweb/wsgi.py' cannot be loaded as Python module.
[Wed Jan 07 16:08:01 2015] [error] [client 108.200.246.4] mod_wsgi (pid=18513): Exception occurred processing WSGI script '/var/www/firstweb/firstweb/wsgi.py'.
[Wed Jan 07 16:08:01 2015] [error] [client 108.200.246.4] Traceback (most recent call last):
[Wed Jan 07 16:08:01 2015] [error] [client 108.200.246.4] File "/var/www/firstweb/firstweb/wsgi.py", line 13, in <module>
[Wed Jan 07 16:08:01 2015] [error] [client 108.200.246.4] from django.core.wsgi import get_wsgi_application
[Wed Jan 07 16:08:01 2015] [error] [client 108.200.246.4] ImportError: No module named django.core.wsgi
Below is my httpd.conf file:
WSGIScriptAlias /mahi/ /var/www/firstweb/firstweb/wsgi.py
WSGIPythonPath /var/www/firstweb/
<Directory "/var/www/firstweb/firstweb">
<Files wsgi.py>
Order allow,deny
Allow from all
</Files>
</Directory>
Please help me. I have no direction on where to go.
It seems that the python path is incomplete.
In ubuntu is something like this if you use the global Python installation.
WSGIPythonPath /var/www/firstweb/:/usr/local/lib/python3.4/dist-packages
You need to give
WSGIPythonPath /path/to/mysite.com
https://docs.djangoproject.com/en/1.7/howto/deployment/wsgi/modwsgi/#basic-configuration
I'm getting this in my error logs:
ImportError: No module named flask
It looks exactly like in Django + mod_wsgi + apache: ImportError at / No module named djproj.urls, but I tried that solution, and it doesn't seem to work... I am correctly inserting the app home and parent folder into the system path, but this error is still coming up.
Navigating to my page still brings up the 500 page.
More information: I'm using Amazon EC2 free tier, with Apache in the form of httpd. Everything is installed correctly, I'm pretty sure...
Here's my stuff (app name badassery and app home folder name hatemail - I change my mind a lot):
Error log
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] mod_wsgi (pid=28143): Target WSGI script '/home/ec2-user/hatemail/badassery.wsgi' cannot be loaded as Python module.
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] mod_wsgi (pid=28143): Exception occurred processing WSGI script '/home/ec2-user/hatemail/badassery.wsgi'.
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] Traceback (most recent call last):
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] File "/home/ec2-user/hatemail/badassery.wsgi", line 6, in <module>
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] from badassery import app as application
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] File "/home/ec2-user/hatemail/badassery.py", line 6, in <module>
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] from flask import Flask, request, session, url_for, redirect, render_template, abort, g, flash, _app_ctx_stack
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] ImportError: No module named flask
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] mod_wsgi (pid=28143): Target WSGI script '/home/ec2-user/hatemail/badassery.wsgi' cannot be loaded as Python module.
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] mod_wsgi (pid=28143): Exception occurred processing WSGI script '/home/ec2-user/hatemail/badassery.wsgi'.
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] Traceback (most recent call last):
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] File "/home/ec2-user/hatemail/badassery.wsgi", line 6, in <module>
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] from badassery import app as application
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] File "/home/ec2-user/hatemail/badassery.py", line 6, in <module>
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] from flask import Flask, request, session, url_for, redirect, render_template, abort, g, flash, _app_ctx_stack
[Sun Nov 11 07:14:45 2012] [error] [client 18.189.71.148] ImportError: No module named flask
badassery.wsgi
import sys
sys.path.insert(0,'/home/ec2-user/hatemail')
sys.path.insert(1,'/home/ec2-user')
from badassery import app as application
Additions to the httpd.conf file
WSGISocketPrefix /var/run/wsgi
<VirtualHost *:80>
ServerName 54.243.61.41
DocumentRoot "/home/ec2-user/hatemail"
WSGIDaemonProcess badassery user=apache group=apache processes=1 threads=5
WSGIScriptAlias / /home/ec2-user/hatemail/badassery.wsgi
WSGIScriptReloading On
<Directory /home/ec2-user/hatemail>
WSGIProcessGroup badassery
WSGIApplicationGroup %{GLOBAL}
Order deny,allow
Allow from all
</Directory>
</VirtualHost>
Directory structure
~
hatemail
badassery.py
badassery.wsgi
Procfile
README
requirements.txt
schema.sql
static/
templates/
venv/bin/activate
Yes, I am doing "if name == 'main': app.run()".
How can I fix this problem?
If you're deploying a virtualenv, you'll have to make sure to activate it first. You should update your wsgi file like this (updating the values to match your environment):
activate_this = '/path/to/virtualenv/bin/activate_this.py'
execfile(activate_this, dict(__file__=activate_this)
import sys
sys.path.insert(0, '/path/to/flask/appname')
sys.path.insert(0,'/home/ec2-user/hatemail')
sys.path.insert(1,'/home/ec2-user')
from badassery import app as application
If you aren't deploying a virtualenv, you probably just need to make sure that Flask is installed on your system. If you've already installed setuptools you can just:
easy_install flask
If you have any problems with importing when using wsgi_mod, make sure you try explicitly pointing to the import files that are causing problems:
sys.path.append('/home/foo/www/Forms')
then do your import!