CODEWITHSUNDEEP
pythonflaskjinja2paasopenshift
punkdata
punkdata

Reputation: 885

Flask framework on Openshift unable to load module

So I have created a flask application in OS from the OS quickstart on github. The app works great on my local system. when i push the app to OS it builds but I get an error 500 in the browser.

Any ideas or assistance would be appreciated.

Here is the source code from the application file:

#!/usr/bin/python import os

virtenv = os.environ['APPDIR'] + '/virtenv/'
os.environ['PYTHON_EGG_CACHE'] = os.path.join(virtenv, 'lib/python2.6/site-packages')
virtualenv = os.path.join(virtenv, 'bin/activate_this.py')
try:
    execfile(virtualenv, dict(__file__=virtualenv))
except IOError:
    pass

from run import app as application

Here is the source from the run.py file

from app import app 
app.run(debug = True)

Here are the errors from the logs (Stripped the HASH ID for my site):

[Sun Aug 05 15:46:08 2012] [error] * Running on http://127.0.0.1:5000/
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] mod_wsgi (pid=28484): Target WSGI script '/var/lib/stickshift/HASH-ID-HERE/app-root/runtime/repo/wsgi/application' cannot be loaded as Python module. 
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] mod_wsgi (pid=28484): Exception occurred processing WSGI script '/var/lib/stickshift/HASH-ID-HERE/app-root/runtime/repo/wsgi/application'. 
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] Traceback (most recent call last): 
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] File "/var/lib/stickshift/HASH-ID-HERE/app-root/runtime/repo/wsgi/application", line 13, in <module> 
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] from run import app as application 
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] File "/var/lib/stickshift/HASH-ID-HERE/app-root/runtime/repo/wsgi/run.py", line 2, in <module> 
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] app.run(debug = True) 
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] File "/var/lib/stickshift/HASH-ID-HERE/ws/virtenv/lib/python2.6/site-packages/Flask-0.9-py2.6.egg/flask/app.py", line 739, in run 
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] run_simple(host, port, self, **options) 
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] File "/var/lib/stickshift/HASH-ID-HERE/ws/virtenv/lib/python2.6/site-packages/Werkzeug-0.8.3-py2.6.egg/werkzeug/serving.py", line 613, in run_simple 
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] test_socket.bind((hostname, port)) 
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] File "<string>", line 1, in bind 
[Sun Aug 05 15:46:08 2012] [error] [client 127.3.153.129] error: [Errno 13] Permission denied 
[Sun Aug 05 15:46:09 2012] [error] * Running on http://127.0.0.1:5000/
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] mod_wsgi (pid=31302): Target WSGI script '/var/lib/stickshift/HASH-ID-HERE/app-root/runtime/repo/wsgi/application' cannot be loaded as Python module. 
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] mod_wsgi (pid=31302): Exception occurred processing WSGI script '/var/lib/stickshift/HASH-ID-HERE/app-root/runtime/repo/wsgi/application'. 
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] Traceback (most recent call last): 
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] File "/var/lib/stickshift/HASH-ID-HERE/app-root/runtime/repo/wsgi/application", line 13, in <module> 
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] from run import app as application 
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] File "/var/lib/stickshift/HASH-ID-HERE/app-root/runtime/repo/wsgi/run.py", line 2, in <module> 
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] app.run(debug = True) 
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] File "/var/lib/stickshift/HASH-ID-HERE/ws/virtenv/lib/python2.6/site-packages/Flask-0.9-py2.6.egg/flask/app.py", line 739, in run
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] run_simple(host, port, self, **options) 
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] File "/var/lib/stickshift/HASH-ID-HERE/ws/virtenv/lib/python2.6/site-packages/Werkzeug-0.8.3-py2.6.egg/werkzeug/serving.py", line 613, in run_simple 
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] test_socket.bind((hostname, port)) 
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] File "<string>", line 1, in bind 
[Sun Aug 05 15:46:09 2012] [error] [client 127.3.153.129] error: [Errno 13] Permission denied

Upvotes: 1

Views: 1877

Answers (3)

punkdata
punkdata

Reputation: 885

So I have finally figured out what was wrong with my code. I was missing a line in my run.py file so the incorrect file looked like this:

Incorrect file:

from app import app
app.run()

This is the corrected working file:

from app import app
if __name__ == "__main__": #Need this line for Openshift
    app.run()

The if statement is apparently needed when deployed to production servers like Apache

Upvotes: 2

codegeek
codegeek

Reputation: 33299

Have you checked the following description from flask website at: http://flask.pocoo.org/docs/deploying/mod_wsgi/#working-with-virtual-environments

Problem: application gives permission errors Probably caused by your application running as the wrong user. Make sure the folders the application needs access to have the proper privileges set and the application runs as the correct user (user and group parameter to the WSGIDaemonProcess directive)

Upvotes: 1

Graham Dumpleton
Graham Dumpleton

Reputation: 58523

You should not be trying to run the Flask built in development server when hosting under mod_wsgi. Go back and check the mod_wsgi documentation in Flask as to what you are meant to be doing.

http://flask.pocoo.org/docs/deploying/mod_wsgi/

Upvotes: 2

Related Questions