Changes between Version 2 and Version 3 of TracModPython


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Timestamp:
May 30, 2012, 7:12:16 PM (12 years ago)
Author:
trac
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  • TracModPython

    v2 v3  
    44Trac supports [http://www.modpython.org/ mod_python], which speeds up Trac's response times considerably, especially compared to [TracCgi CGI], and permits use of many Apache features not possible with [wiki:TracStandalone tracd]/mod_proxy.
    55
    6 These instructions are for Apache 2; if you are still using Apache 1.3, you may have some luck with [wiki:TracModPython2.7 TracModPython2.7].
     6These instructions are for Apache 2; if you are still using Apache 1.3, you may have some luck with [trac:wiki:TracModPython2.7 TracModPython2.7].
     7
     8== A Word of Warning ==
     9
     10As of 16^th^ June 2010, the mod_python project is officially dead.  If you are considering using mod_python for a new installation, '''please don't'''!  There are known issues which will not be fixed and there are now better alternatives.  Check out the main TracInstall pages for your target version for more information.
    711
    812== Simple configuration ==
    … …  
    2125(Still on Debian) after you have installed mod_python, you must enable the modules in apache2 (equivalent of the above Load Module directive):
    2226{{{
    23 a2enmod mod_python
     27a2enmod python
    2428}}}
    2529On Fedora use, using yum:
    … …  
    3438   PythonInterpreter main_interpreter
    3539   PythonHandler mod_python.testhandler
     40   Order allow,deny
     41   Allow from all
    3642</Location>
    3743}}}
    … …  
    4652   PythonOption TracEnv /var/trac/myproject
    4753   PythonOption TracUriRoot /projects/myproject
     54   Order allow,deny
     55   Allow from all
    4856</Location>
    4957}}}
    … …  
    7482}}}
    7583
     84or you can uncompress the Genshi egg to resolve problems extracting from it.
    7685=== Configuring Authentication ===
    7786
    … …  
    149158
    150159
     160=== Setting the Python Egg Cache ===
     161
     162If the Egg Cache isn't writeable by your Web server, you'll either have to change the permissions, or point Python to a location where Apache can write. This can manifest itself as a ''500 internal server error'' and/or a complaint in the syslog.
     163
     164{{{
     165#!xml
     166<Location /projects/myproject>
     167  ...
     168  PythonOption PYTHON_EGG_CACHE /tmp
     169  ...
     170</Location>
     171}}}
     172
    151173
    152174=== Setting the !PythonPath ===
    … …  
    228250 * Try using `<LocationMatch>` instead of `<Location>`
    229251 * <Location /> may, in your server setup, refer to the complete host instead of simple the root of the server. This means that everything (including the login directory referenced below) will be sent to python and authentication does not work (i.e. you get the infamous Authentication information missing error). If this applies to you, try using a sub-directory for trac instead of the root (i.e. /web/ and /web/login instead of / and /login).
     252 * Depending on apache's `NameVirtualHost` configuration, you may need to use `<VirtualHost *:80>` instead of `<VirtualHost *>`.
    230253
    231254For a virtual host that supports multiple projects replace "`TracEnv`" /var/trac/myproject with "`TracEnvParentDir`" /var/trac/
    … …  
    266289Using <Location /> together with `SetHandler` resulted in having everything handled by mod_python, which leads to not being able download any CSS or images/icons. I used <Location /trac> `SetHandler None` </Location> to circumvent the problem, though I do not know if this is the most elegant solution.
    267290
     291=== Problem with zipped egg ===
     292
     293It's possible that your version of mod_python will not import modules from zipped eggs. If you encounter an `ImportError: No module named trac` in your Apache logs but you think everything is where it should be, this might be your problem. Look in your site-packages directory; if the Trac module appears as a ''file'' rather than a ''directory'', then this might be your problem. To rectify, try installing Trac using the `--always-unzip` option, like this:
     294
     295{{{
     296easy_install --always-unzip Trac-0.12b1.zip
     297}}}
     298
    268299=== Using .htaccess ===
    269300
    … …  
    286317}}}
    287318
    288 The TracUriRoot is obviously the path you need to enter to the browser to get to the trac (e.g. domain.tld/projects/trac)
     319The `TracUriRoot` is obviously the path you need to enter to the browser to get to the trac (e.g. domain.tld/projects/trac)
     320
     321=== Additional .htaccess help ===
     322
     323If you are using the .htaccess method you may have additional problems if your trac directory is inheriting .htaccess directives from another.  This may also help to add to your .htaccess file:
     324
     325{{{
     326<IfModule mod_rewrite.c>
     327  RewriteEngine Off
     328</IfModule>
     329}}}
     330
    289331
    290332=== Win32 Issues ===
    … …  
    305347}}}
    306348
    307 See also [[http://subversion.tigris.org/faq.html#reposperms]]
     349See also [http://subversion.tigris.org/faq.html#reposperms]
    308350
    309351=== FreeBSD issues ===
    … …  
    311353
    312354If you compiled and installed apache2, apache wouldn´t support threads (cause it doesn´t work very well on FreeBSD). You could force thread support when running ./configure for apache, using --enable-threads, but this isn´t recommendable.
    313 The best option [[http://modpython.org/pipermail/mod_python/2006-September/021983.html seems to be]] adding to /usr/local/apache2/bin/ennvars the line
     355The best option [http://modpython.org/pipermail/mod_python/2006-September/021983.html seems to be] adding to /usr/local/apache2/bin/ennvars the line
    314356
    315357{{{
    … …  
    323365If this is not the case, it's possible that you're using Subversion libraries that are binary incompatible with the apache ones (an incompatibility of the `apr` libraries is usually the cause). In that case, you also won't be able to use the svn modules for Apache (`mod_dav_svn`).
    324366
    325 You also need a recent version of `mod_python` in order to avoid a runtime error ({{{argument number 2: a 'apr_pool_t *' is expected}}}) due to the default usage of multiple sub-interpreters. 3.2.8 ''should'' work, though it's probably better to use the workaround described in #3371, in order to force the use of the main interpreter:
     367You also need a recent version of `mod_python` in order to avoid a runtime error ({{{argument number 2: a 'apr_pool_t *' is expected}}}) due to the default usage of multiple sub-interpreters. 3.2.8 ''should'' work, though it's probably better to use the workaround described in [trac:#3371 #3371], in order to force the use of the main interpreter:
    326368{{{
    327369PythonInterpreter main_interpreter
    328370}}}
    329 This is anyway the recommended workaround for other well-known issues seen when using the Python bindings for Subversion within mod_python (#2611, #3455). See in particular Graham Dumpleton's comment in [comment:ticket:3455:9 #3455] explaining the issue.
     371This is anyway the recommended workaround for other well-known issues seen when using the Python bindings for Subversion within mod_python ([trac:#2611 #2611], [trac:#3455 #3455]). See in particular Graham Dumpleton's comment in [trac:comment:9:ticket:3455 #3455] explaining the issue.
    330372
    331373=== Page layout issues ===
    … …  
    341383
    342384Note: For the above configuration to have any effect it must be put after the configuration of your project root location, i.e. {{{<Location /myproject />}}}.
     385
     386Also, setting `PythonOptimize On` seems to mess up the page headers and footers, in addition to hiding the documentation for macros and plugins (see #Trac8956). Considering how little effect the option has, it is probably a good idea to leave it `Off`.
    343387
    344388=== HTTPS issues ===
    … …  
    360404
    361405=== Segmentation fault with php5-mhash or other php5 modules ===
    362 You may encounter segfaults (reported on debian etch) if php5-mhash module is installed. Try to remove it to see if this solves the problem. See debian bug report [[http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=411487]]
    363 
    364 Some people also have troubles when using php5 compiled with its own 3rd party libraries instead of system libraries. Check here [[http://www.djangoproject.com/documentation/modpython/#if-you-get-a-segmentation-fault]]
     406You may encounter segfaults (reported on debian etch) if php5-mhash module is installed. Try to remove it to see if this solves the problem. See debian bug report [http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=411487]
     407
     408Some people also have troubles when using php5 compiled with its own 3rd party libraries instead of system libraries. Check here [http://www.djangoproject.com/documentation/modpython/#if-you-get-a-segmentation-fault]
    365409
    366410----
    367 See also TracGuide, TracInstall, TracCgi, TracFastCgi
     411See also:  TracGuide, TracInstall, [wiki:TracModWSGI ModWSGI], [wiki:TracFastCgi FastCGI],  [trac:TracNginxRecipe TracNginxRecipe]