I've used mod_wsgi for several years and had to install via a bash script (so 
that puppet could do it) to get current versions, but now one can install using 
pip.  The only issue I found was that the pip install does not create 
mod_wsgi.load or mod_wsgi_conf, but those were simple enough to supply myself.


Charles Yeomans


> On Dec 16, 2014, at 6:59 PM, Graham Dumpleton <[email protected]> 
> wrote:
> 
> You will unfortunately not find a binary OS supplied Ubuntu 10.4 package for 
> mod_wsgi which is newer.
> 
> Your only choice would be to compile from source code.
> 
> Graham
> 
> On 17/12/2014, at 10:54 AM, Jennifer Mehl <[email protected]> wrote:
> 
>> Thanks for this info. I’ll try a newer mod_wsgi.
>> 
>> It’s very odd to me that the app works fine in mod_wsgi/Apache with no SSL 
>> but parts become broken in certain browsers once SSL is enabled.
>> 
>> At any rate, thanks for the guidance and I’ll report back if I find a fix!
>> 
>> —Jennifer
>> 
>>> On Dec 16, 2014, at 3:46 PM, Graham Dumpleton <[email protected]> 
>>> wrote:
>>> 
>>> If you are using mod_wsgi 3.4 that could be a problem in itself.
>>> 
>>> Recent versions of Ubuntu as I understand it use Apache 2.4, but such an 
>>> old version of mod_wsgi may have issues on Apache 2.4. At the minimum would 
>>> need to have mod_wsgi 3.5 from memory as some Apache 2.4 fixes were back 
>>> ported to 3.5. It is unlikely they back ported those themselves to 3.4 for 
>>> 14.04.
>>> 
>>> Either way, mod_wsgi itself shouldn't be causing any problems with HTTPS as 
>>> it is Apache that deals with all that and mod_wsgi has nothing to do with 
>>> the handling of secure connections. When mod_wsgi sees a request that came 
>>> via HTTPS it sees it as being no different to a HTTP request with the 
>>> exception of what the wsgi.url_scheme attribute is set to. It is therefore 
>>> more likely to be an Apache configuration issue or issue with the code of 
>>> Apache itself.
>>> 
>>> FWIW, mod_wsgi 3.4 means that Ubuntu version is almost 20 versions behind. 
>>> Even Ubuntu 14.10 has only mod_wsgi 3.5. It is quite frustrating that they 
>>> haven't been bothered to update their packages to more recent versions even 
>>> if only for the most recent 14.10.
>>> 
>>> About the only thing I can suggest if it is readily reproducible, is to use 
>>> request logging such as described in:
>>> 
>>> http://code.google.com/p/modwsgi/wiki/DebuggingTechniques#Tracking_Request_and_Response
>>> 
>>> to see if when a request has issues, that the WSGI application actually 
>>> returned the requests properly.
>>> 
>>> If it isn't, then use something like:
>>> 
>>> http://code.google.com/p/modwsgi/wiki/DebuggingTechniques#Extracting_Python_Stack_Traces
>>> 
>>> to get out Python stack traces for where a request handler may be stuck.
>>> 
>>> Both can be fiddly so sounds like you aren't going to have time to do that.
>>> 
>>> Graham
>>> 
>>> On 17/12/2014, at 10:04 AM, Jennifer Mehl <[email protected]> wrote:
>>> 
>>>> I’m on the latest for Ubuntu 14.04LTS - 2.4.7-1ubuntu4.1.  I have been 
>>>> using the updated mod_wsgi3.4 from Ubuntu. 
>>>> 
>>>> At this point I was thinking about trying my Django application in a 
>>>> different WSGI server to see if I can narrow down if the problem is with 
>>>> the Django code or something with mod_wsgi.  I was thinking about uwsgi 
>>>> (trying to find something quick and easy to test) or nginx.
>>>> 
>>>> Again, the weird browser behavior I describe below only happens when using 
>>>> Apache/HTTPS, port 443, in mod_wsgi (not Apache/HTTP in mod_wsgi or the 
>>>> Django development server in port 80).
>>>> 
>>>> I’m kind of at my wit’s end trying to narrow down *where* the problem is 
>>>> (if it’s something in the Django code, I only have one more day until my 
>>>> developer leaves for a few weeks for winter break…) Do you think there any 
>>>> debugging I can do by looking at the developer console in the affected 
>>>> browsers - for instance comparing the affected pages on a working port 80 
>>>> vs the same pages on the non-working SSL/port 443 connection?
>>>> 
>>>> thank you,
>>>> Jennifer
>>>> 
>>>> 
>>>> 
>>>>> On Dec 16, 2014, at 2:55 PM, Graham Dumpleton 
>>>>> <[email protected]> wrote:
>>>>> 
>>>>> One more question. What version of Apache are you using?
>>>>> 
>>>>> If you are stuck on a quite old Apache 2.2.X version that would be a 
>>>>> concern as there were various SSL related issues patched during the life 
>>>>> of Apache 2.2.X.
>>>>> 
>>>>> Graham
>>>>> 
>>>>> On 16/12/2014, at 11:40 AM, Graham Dumpleton <[email protected]> 
>>>>> wrote:
>>>>> 
>>>>>> I'll go through the description you gave me and see if can suggest 
>>>>>> anything, but first up, what version of mod_wsgi are you using?
>>>>>> 
>>>>>> If you are using mod_wsgi 4.4.0 make sure you update to 4.4.1. The newer 
>>>>>> version resolves a potential for process crashing introduced in 4.4.0.
>>>>>> 
>>>>>> Graham
>>>>>> 
>>>>>> On 16/12/2014, at 11:33 AM, Jennifer Mehl <[email protected]> 
>>>>>> wrote:
>>>>>> 
>>>>>>> Hi there,
>>>>>>> 
>>>>>>> I am backpedalling a bit from my previous attempt to chroot mod_wsgi - 
>>>>>>> instead, for now, just to get this Django application running, for 
>>>>>>> simplicity, I am going to start out with just running it as a daemon as 
>>>>>>> a restricted user.
>>>>>>> 
>>>>>>> In doing the final testing of my application on various browsers, I 
>>>>>>> have noticed some strange problems.  
>>>>>>> 
>>>>>>> When I run Django/mod_wsgi/Apache on port 80 (same config as below, 
>>>>>>> minus the mod_ssl stuff)  or use the django development runserver 
>>>>>>> 0.0.0.0:80, and disable the following settings in settings.py 
>>>>>>> (#SESSION_COOKIE_SECURE = True #CSRF_COOKIE_SECURE = True) these 
>>>>>>> browsers work correctly in the app.
>>>>>>> 
>>>>>>> However, when running Django application running through mod_wsgi and 
>>>>>>> HTTPS/port 443 in Apache, I see problems with both IE and Safari 
>>>>>>> browsers.  After login on Internet Explorer, page timeouts occur in 
>>>>>>> various locations, reporting "This page can't be displayed".  On 
>>>>>>> Safari, the app won't get past the secondary Duo MFA authentication 
>>>>>>> step, saying "Server unexpectedly dropped the connection." It is not a 
>>>>>>> consistent behavior - seems to happen more frequently if I click 
>>>>>>> quickly through links.   Sometimes if I wait long enough to click, it 
>>>>>>> might work momentarily, but then not again a moment later.  This 
>>>>>>> behavior does NOT happen using Chrome or Firefox browsers on any OS.
>>>>>>> 
>>>>>>> Apache config:
>>>>>>> 
>>>>>>> 
>>>>>>> <IfModule mod_ssl.c>
>>>>>>> 
>>>>>>> <VirtualHost *:443>
>>>>>>> 
>>>>>>> ServerName **redacted**
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> #Django WSGI - Daemon
>>>>>>> 
>>>>>>>     WSGIScriptAlias / /var/www/transfergateway/myproject/apache/wsgi.py
>>>>>>> 
>>>>>>>     WSGIProcessGroup file-xfer 
>>>>>>> 
>>>>>>>     WSGIDaemonProcess file-xfer user=mod_wsgi group=mod_wsgi 
>>>>>>> processes=2 threads=25 python-path=/var/www/transfergateway
>>>>>>> 
>>>>>>> 
>>>>>>> <Directory /var/www/transfergateway/myproject/apache>
>>>>>>> 
>>>>>>> <Files wsgi.py>
>>>>>>> 
>>>>>>> Order deny,allow
>>>>>>> 
>>>>>>> Allow from all
>>>>>>> 
>>>>>>> </Files>
>>>>>>> 
>>>>>>> </Directory>
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> Alias /robots.txt 
>>>>>>> /var/www/transfergateway/myproject/myapp/static/robots.txt
>>>>>>> 
>>>>>>> Alias /favicon.ico 
>>>>>>> /var/www/transfergateway/myproject/myapp/static/favicon.ico
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> AliasMatch ^/([^/]*\.css) 
>>>>>>> /var/www/transfergateway/myproject/myapp/static/styles/$1
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> Alias /media/ /var/www/transfergateway/myproject/myapp/media/
>>>>>>> 
>>>>>>> Alias /static/ /var/www/transfergateway/myproject/myapp/static/
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> <Directory /var/www/transfergateway/myproject/myapp/static>
>>>>>>> 
>>>>>>> Order deny,allow
>>>>>>> 
>>>>>>> Allow from all
>>>>>>> 
>>>>>>> </Directory>
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> <Directory /var/www/transfergateway/myproject/myapp/media>
>>>>>>> 
>>>>>>> Order deny,allow
>>>>>>> 
>>>>>>> Allow from all
>>>>>>> 
>>>>>>> </Directory>
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> ErrorLog ${APACHE_LOG_DIR}/error.log
>>>>>>> 
>>>>>>> CustomLog ${APACHE_LOG_DIR}/access.log combined
>>>>>>> 
>>>>>>> SSLEngine on
>>>>>>> 
>>>>>>> SSLCertificateFile      /etc/ssl/certs/***
>>>>>>> 
>>>>>>> SSLCertificateKeyFile /etc/ssl/private/**
>>>>>>> 
>>>>>>> SSLCertificateChainFile /etc/ssl/certs/**
>>>>>>> 
>>>>>>> SSLCipherSuite HIGH:!aNULL:!MD5
>>>>>>> 
>>>>>>> </VirtualHost>
>>>>>>> 
>>>>>>> 
>>>>>>> </IfModule>
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> So, I'm concluding that the HTTPS problem is one of two things: how I 
>>>>>>> am configuring mod_wsgi with HTTPS, or some issue inside the Django 
>>>>>>> code (but HTTPS works on some browsers with no issues, so I'm 
>>>>>>> stumped...)
>>>>>>> 
>>>>>>> Is there anything special that I need to do in mod_wsgi or the Django 
>>>>>>> application itself, in order to make the application HTTPS only?  (I am 
>>>>>>> not a Python or Django developer, so I would be passing info on to the 
>>>>>>> actual application developer for resolution.)  Any ideas?
>>>>>>> 
>>>>>>> thank you,
>>>>>>> Jennifer
>>>>>>> 
>>>>>>> 
>>>>>>> 
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>>>>>> 
>>>>> 
>>>>> 
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