Changes between Version 36 and Version 37 of DjangoOnWindowsWithIISAndSQLServer


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Timestamp:
05/11/2008 02:31:06 AM (7 years ago)
Author:
mrtwice99
Comment:

modified information related to PyISAPIe

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  • DjangoOnWindowsWithIISAndSQLServer

    v36 v37  
    2020
    2121== Install PyISAPIe - an ISAPI extension for IIS ==
    22 There is no installer for this, so there are quite a few steps, but they aren't very complicated.
    2322
    24 Breifly, this is an IIS extension that loads the Python interpreter into memory while IIS is running, and uses it to serve page requests - it avoids the CGI overhead of restarting Python for every request. It does mean that some Django files will be cached and you wont see changes while testing your Django site until you restart the Python process. With IIS 6 you have to right-click on the application pool running your services and select 'recycle' for changes to take. Previous versions of IIS might need the whole IIS service to be restarted.
     23PyISAPIe is an IIS extension that loads the Python interpreter into memory while IIS is running, and uses it to serve page requests - it avoids the CGI overhead of restarting Python for every request. It does mean that some Django files will be cached and you wont see changes while testing your Django site until you restart the Python process. With IIS 6 you have to right-click on the application pool running your services and select 'recycle' for changes to take. Previous versions of IIS will need the whole IIS service to be restarted.
    2524
    26 Now on with the setup: Go to http://pyisapie.sourceforge.net/ and download it (look in the menu on the right, under "Links" for a download link). Unzip the archive so you can copy files out of it.
     25I will assume you are using c:\python25 as the folder where Python is installed, but please change these where necessary for your setup.
    2726
    28 I will assume you've extracted it to c:\pyisapie, and are using c:\python25 as the folder where Python is installed, but please change these where necessary for your setup.
    29 
    30 There is documentation in the readme files, but at the time of writing the install consists of:
     27If you have problems with PyISAPIe, check out the [http://groups.google.com/group/pyisapie?hl=en PyISAPIe Google Group] for support.
    3128
    3229=== Setting up Files ===
    33  * Copy c:\pyisapie\PyISAPIe.dll to c:\python25\
    34  * Edit the properties -> security settings on that file, add "Network Service" and tick "read" permission. (So IIS can use it).
     30 * Go to http://pyisapie.sourceforge.net/ and download it (look in the menu on the right, under "Links" for a download link). Unzip the archive to c:\pyisapie.
     31 * Edit the properties -> security settings of c:\pyisapie\PyISAPIe.dll, add "Network Service" and tick "read" permission. (So IIS can use it).
    3532 * Go to c:\pyisapie\source\PyISAPIe\Python\ and copy the entire Http folder to c:\python25\lib\site-packages. '''''Note:''' the Http folder is case sensitive.  Saving in 'http' (or any other variation) will not work [SF]''.
    3633
     
    3936
    4037 * Open the IIS Management Console, and create a new virtual directory, and allow executing ISAPI extensions when prompted by the wizard.
     38
     39==== Multiple Django Installations on IIS ====
     40
     41You can only run multiple instances of Django on IIS 6.0 if you use a separate instance of PyISAPIe for each Django instance.  This is accomplished by setting up an IIS Application Pool for each PyISAPIe/Django instance that needs to be run.  It would be great if multiple instances of Django could run under a single PyISAPIe instance.  Please encourage the Django developers to work on this issue and/or contribute a fix yourself.  You can find more information about this issue here:
     42
     43 * [http://code.djangoproject.com/ticket/2039 Trac Ticket: Provide a way to use django under IIS]
     44 * [http://groups.google.com/group/pyisapie/browse_thread/thread/b67e861c85e1b26a?hl=en  PyISAPIe Group: Multiple PyISAPIe Instances (for Django)]
     45 * [http://groups.google.com/group/django-developers/browse_thread/thread/dfd69014daa36672  Developers Group: IIS, pyisapie, and DJANGO_SETTINGS_MODULE]
     46
     47Multiple instances of Django on IIS 5.1 is not currently possible.
     48
    4149
    4250==== IIS 6 ====
     
    6169 
    6270That's it installed. In c:\pyisapie\source\PyISAPIe\Python\examples folder is a file called Info.py. Copy this to your new virtual directory folder, and then try and view http://site/Info.py to test it. It should work. If it doesn't, when you find out why, please come back and explain what happened and how you fixed it. ;)
    63   * ''I got an error "Import Error: couldn't locate module Http.Isapi"; I resolved it by adding IUSR_machine read and execute access to the directory Http in site-packages [rnm]''
    64   * ''I also got "Import Error: couldn't locate module Http.Isapi", but was unable to fix it with the above solution. The only thing I can find, for now, is moving Http from site-packages to Lib. This seems like a potentially bad idea, however. [mao]''
     71
     72==== IIS Troubleshooting ====
     73  * "Import Error: couldn't locate module Http.Isapi" -- see [http://groups.google.com/group/django-users/browse_thread/thread/1d2cbd681f2b6f7f Users Group: IIS 6 PyISAPIe problems]
     74
    6575
    6676== Django ==
     
    114124
    115125 * Put pyisapie.py in c:\python25\lib\site-packages\Django-xyz-123.egg\django\core\handlers folder.
    116  * It doesn't seem that ''IIS+Python+PyISAPIe'' support multiple Django sites.
    117    * ''This is related to the impossibility of having multiple values for DJANGO_SETTINGS_MODULE in os.environ within a single IIS worker process. Can said value be specified in the request env? [pjs]''
    118126
    119127=== Serving Django with IIS ===
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