Changes between Version 3 and Version 4 of TracCgi

Timestamp:

Jul 17, 2018, 2:10:59 PM (6 years ago)

Author:

trac

Comment:

--

TracCgi

@@ -1 @@
-= Installing Trac as CGI =
+= Installing Trac as CGI
+[[TracGuideToc]]
+[[PageOutline]]
 
-{{{
-#!div class=important
-  ''Please note that using Trac via CGI is the slowest deployment method available. It is slower than [TracModPython mod_python], [TracFastCgi FastCGI] and even [trac:TracOnWindowsIisAjp IIS/AJP] on Windows.''
+{{{#!div class=important
+ ''Please note that using Trac via CGI is the slowest deployment method available. It is slower than [wiki:TracModWSGI mod_wsgi], [TracModPython mod_python], [TracFastCgi FastCGI] and even [trac:TracOnWindowsIisAjp IIS/AJP] on Windows.''
 }}}
 
-CGI script is the entrypoint that web-server calls when a web-request to an application is made. To generate the `trac.cgi` script run:
-{{{
-trac-admin /path/to/env deploy /path/to/www/trac
-}}}
-`trac.cgi` will be in the `cgi-bin` folder inside the given path. ''Make sure it is executable by your web server''. This command also copies `static resource` files to a `htdocs` directory of a given destination.
+CGI script is the entrypoint that web-server calls when a web-request to an application is made. The `trac.cgi` script can be created using the `trac-admin <env> deploy <dir>` command which automatically substitutes the required paths, see TracInstall#cgi-bin. Make sure the script is executable by your web server.
 
-== Apache web-server configuration ==
+== Apache web-server configuration
 
 In [http://httpd.apache.org/ Apache] there are two ways to run Trac as CGI:
 
- 1. Use a `ScriptAlias` directive that maps an URL to the `trac.cgi` script (recommended)
- 2. Copy the `trac.cgi` file into the directory for CGI executables used by your web server (commonly named `cgi-bin`). You can also create a symbolic link, but in that case make sure that the `FollowSymLinks` option is enabled for the `cgi-bin` directory.
+ 1. Use a `ScriptAlias` directive that maps a URL to the `trac.cgi` script (recommended)
+ 1. Copy the `trac.cgi` file into the directory for CGI executables used by your web server (commonly named `cgi-bin`). You can also create a symbolic link, but in that case make sure that the `FollowSymLinks` option is enabled for the `cgi-bin` directory.
 
 To make Trac available at `http://yourhost.example.org/trac` add `ScriptAlias` directive to Apache configuration file, changing `trac.cgi` path to match your installation:
-{{{
+{{{#!apache
 ScriptAlias /trac /path/to/www/trac/cgi-bin/trac.cgi
 }}}
 
- ''Note that this directive requires enabled `mod_alias` module.''
+ ''Note that this directive requires that the `mod_alias` module is enabled.''
 
 If you're using Trac with a single project you need to set its location using the `TRAC_ENV` environment variable:
-{{{
+{{{#!apache
 <Location "/trac">
   SetEnv TRAC_ENV "/path/to/projectenv"
@@ -34 +31 @@
 
 Or to use multiple projects you can specify their common parent directory using the `TRAC_ENV_PARENT_DIR` variable:
-{{{
+{{{#!apache
 <Location "/trac">
   SetEnv TRAC_ENV_PARENT_DIR "/path/to/project/parent/dir"
@@ -40 +37 @@
 }}}
 
- ''Note that the `SetEnv` directive requires enabled `mod_env` module. It is also possible to set TRAC_ENV in trac.cgi. Just add the following code between "try:" and "from trac.web ...":''
+  ''Note that the `SetEnv` directive requires that the `mod_env` module is enabled.''
 
-{{{
-    import os
+An alternative to `SetEnv` is editing `TRAC_ENV` or `TRAC_ENV_PARENT_DIR` in `trac.cgi`:
+
+{{{#!python
     os.environ['TRAC_ENV'] = "/path/to/projectenv"
 }}}
 
- '' Or for TRAC_ENV_PARENT_DIR: ''
-
-{{{
-    import os
-    os.environ['TRAC_ENV_PARENT_DIR'] = "/path/to/project/parent/dir"
+{{{#!python
+    os.environ['TRAC_ENV_PARENT_DIR'] = "/path/to/parent/dir"
 }}}
 
-If you are using the [http://httpd.apache.org/docs/suexec.html Apache suEXEC] feature please see [http://trac.edgewall.org/wiki/ApacheSuexec].
+If you are using the [http://httpd.apache.org/docs/suexec.html Apache suEXEC] feature please see [trac:ApacheSuexec].
 
-On some systems, you ''may'' need to edit the shebang line in the `trac.cgi` file to point to your real Python installation path. On a Windows system you may need to configure Windows to know how to execute a .cgi file (Explorer -> Tools -> Folder Options -> File Types -> CGI).
+On some systems, you ''may'' need to edit the shebang line in the `trac.cgi` file to point to your real Python installation path. On a Windows system you may need to configure Windows to know how to execute a `.cgi` file (Explorer -> Tools -> Folder Options -> File Types -> CGI).
 
-=== Using WSGI ===
+=== Python Egg Cache
+
+The [TracInstall#egg-cache egg-cache] can be configured using an `os.environ` statement in `trac.cgi`, as shown above.
+To do the same from the Apache configuration, use the `SetEnv` directive:
+{{{#!apache
+SetEnv PYTHON_EGG_CACHE /path/to/dir
+}}}
+
+Put this directive next to where you set the path to the [TracEnvironment Trac environment], i.e. in the same `<Location>` block.
+
+{{{#!apache
+ <Location /trac>
+   SetEnv TRAC_ENV /path/to/projenv
+   SetEnv PYTHON_EGG_CACHE /path/to/dir
+ </Location>
+}}}
+
+
+
+=== Using WSGI
 
 You can run a [http://henry.precheur.org/python/how_to_serve_cgi WSGI handler] [http://pythonweb.org/projects/webmodules/doc/0.5.3/html_multipage/lib/example-webserver-web-wsgi-simple-cgi.html under CGI].  You can [wiki:TracModWSGI#Thetrac.wsgiscript write your own application function], or use the deployed trac.wsgi's application.
 
-== Mapping Static Resources ==
+== Mapping Static Resources
 
 See TracInstall#MappingStaticResources.
 
-== Adding Authentication ==
+== Adding Authentication
 
 See TracInstall#ConfiguringAuthentication.
 
 ----
-See also:  TracGuide, TracInstall, [wiki:TracModWSGI], TracFastCgi, TracModPython
+See also:  TracInstall, [wiki:TracModWSGI], TracFastCgi, TracModPython