|  | 1 | = Installing Trac as CGI | 
                          |  | 2 | [[TracGuideToc]] | 
                          |  | 3 | [[PageOutline]] | 
                          |  | 4 |  | 
                          |  | 5 | {{{#!div class=important | 
                          |  | 6 | ''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.'' | 
                          |  | 7 | }}} | 
                          |  | 8 |  | 
                          |  | 9 | 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. | 
                          |  | 10 |  | 
                          |  | 11 | == Apache web-server configuration | 
                          |  | 12 |  | 
                          |  | 13 | In [http://httpd.apache.org/ Apache] there are two ways to run Trac as CGI: | 
                          |  | 14 |  | 
                          |  | 15 | 1. Use a `ScriptAlias` directive that maps an URL to the `trac.cgi` script (recommended) | 
                          |  | 16 | 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. | 
                          |  | 17 |  | 
                          |  | 18 | 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: | 
                          |  | 19 | {{{#!apache | 
                          |  | 20 | ScriptAlias /trac /path/to/www/trac/cgi-bin/trac.cgi | 
                          |  | 21 | }}} | 
                          |  | 22 |  | 
                          |  | 23 | ''Note that this directive requires enabled `mod_alias` module.'' | 
                          |  | 24 |  | 
                          |  | 25 | If you're using Trac with a single project you need to set its location using the `TRAC_ENV` environment variable: | 
                          |  | 26 | {{{#!apache | 
                          |  | 27 | <Location "/trac"> | 
                          |  | 28 | SetEnv TRAC_ENV "/path/to/projectenv" | 
                          |  | 29 | </Location> | 
                          |  | 30 | }}} | 
                          |  | 31 |  | 
                          |  | 32 | Or to use multiple projects you can specify their common parent directory using the `TRAC_ENV_PARENT_DIR` variable: | 
                          |  | 33 | {{{#!apache | 
                          |  | 34 | <Location "/trac"> | 
                          |  | 35 | SetEnv TRAC_ENV_PARENT_DIR "/path/to/project/parent/dir" | 
                          |  | 36 | </Location> | 
                          |  | 37 | }}} | 
                          |  | 38 |  | 
                          |  | 39 | ''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 ...":'' | 
                          |  | 40 |  | 
                          |  | 41 | {{{#!python | 
                          |  | 42 | import os | 
                          |  | 43 | os.environ['TRAC_ENV'] = "/path/to/projectenv" | 
                          |  | 44 | }}} | 
                          |  | 45 |  | 
                          |  | 46 | '' Or for TRAC_ENV_PARENT_DIR: '' | 
                          |  | 47 |  | 
                          |  | 48 | {{{#!python | 
                          |  | 49 | import os | 
                          |  | 50 | os.environ['TRAC_ENV_PARENT_DIR'] = "/path/to/project/parent/dir" | 
                          |  | 51 | }}} | 
                          |  | 52 |  | 
                          |  | 53 | If you are using the [http://httpd.apache.org/docs/suexec.html Apache suEXEC] feature please see [trac:ApacheSuexec]. | 
                          |  | 54 |  | 
                          |  | 55 | 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). | 
                          |  | 56 |  | 
                          |  | 57 | === Using WSGI | 
                          |  | 58 |  | 
                          |  | 59 | 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. | 
                          |  | 60 |  | 
                          |  | 61 | == Mapping Static Resources | 
                          |  | 62 |  | 
                          |  | 63 | See TracInstall#MappingStaticResources. | 
                          |  | 64 |  | 
                          |  | 65 | == Adding Authentication | 
                          |  | 66 |  | 
                          |  | 67 | See TracInstall#ConfiguringAuthentication. | 
                          |  | 68 |  | 
                          |  | 69 | ---- | 
                          |  | 70 | See also:  TracGuide, TracInstall, [wiki:TracModWSGI], TracFastCgi, TracModPython |