changeset 4316:37882d4d7a2f

Add a first overhaul of http://moinmo.in/HelpOnInstalling/ApacheOnLinux as install documentation
author Florian Krupicka <florian.krupicka@googlemail.com>
date Sun, 17 Aug 2008 23:40:09 +0200
parents b75bbed31b67
children 371bf2615ea1
files docs/INSTALL.wsgi
diffstat 1 files changed, 144 insertions(+), 0 deletions(-) [+]
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+MoinMoin - setting up the WSGI application
+==========================================
+
+This manual describes how to setup a MoinMoin instance to run under
+various webservers and gateway interfaces. We assume, that you already
+followed through the basic installation and set up a wiki instance,
+either system wide or as a user:
+
+ * http://moinmo.in/HelpOnInstalling/BasicInstallation
+ * http://moinmo.in/HelpOnInstalling/WikiInstanceCreation
+
+In the following the install prefix of where you installed MoinMoin will
+be called $PREFIX, and your wiki instance will be called $INSTANCE.
+
+= Running the application =
+
+There are several ways to run MoinMoin, with varying complexity and
+performance. The most common ways are:
+
+ * CGI: the classic among web application serving, awfully slow but
+    works (almost) everywhere.
+ * FastCGI (and other modern gateway interfaces): very fast, leaves
+    static fileserving and HTTP protocol to the webserver
+ * Standalone server: reasonably fast, but static file serving can be
+    improved with a standard webserver in front.
+ * mod_wsgi: Apache can embed a python process into the webserver, that
+    speaks directly with the MoinMoin WSGI application. Very fast and
+    for the future the preferred method of deployment.
+
+== Running as CGI ==
+Almost every webserver supports running CGI scripts. To serve MoinMoin
+wiki pages, the `moin.cgi` script needs to be made accessable and
+executable by the server. Usually the webserver runs not as user `root`,
+but as some other user and group for security reasons. in the following
+the user the webserver runs as will be called $USER and the group will
+be called $GROUP.
+
+  > cd $INSTANCE
+  > mkdir cgi-bin
+  > cp $PREFIX/share/moin/server/moin.cgi cgi-bin/
+  > chown -R $USER:$GROUP cgi-bin
+  > chmod -R ug+rx cgi-bin
+  > chmod -R o-rwx cgi-bin
+
+In this scenario we create the directory `cgi-bin` directly in the
+instance directory of the wiki. If you already have another designated
+directory for CGI files, you may just copy `moin.cgi` there. Since the
+paths for your particular wiki instance are configurable, the location
+does not really matter in relation to where your instance directory is.
+
+=== Configure the webserver ===
+To make Apache run your wiki instance correctly, it still needs to know
+about your CGI script and the location of the static files of MoinMoin
+(like images, stylesheets, etc.). Also it should not make the instance
+directory accessable over the web. Add the following to your Apache
+configuration, either global or inside the desired virtual host.
+
+  Alias /moin_static180 $PREFIX/share/moin/htdocs/
+  ScriptAlias /wiki $INSTANCE/cgi-bin/moin.cgi
+
+If you plan an running several instances on the server, either in
+different vhosts or under different URLs, you may add the `Alias`-line
+to the global server config once and omit it for the different instances
+altogether.
+
+If you placed `moin.cgi` in a different, already configured directory,
+as mentioned above, just omit the `ScriptAlias`-line.
+
+=== Configure moin.cgi ===
+When `moin.cgi` is launched, the python interpreter imports the modules
+needed to run MoinMoin and those in turn import the wiki configuration
+(which is itself a python module). While the MoinMoin modules should
+always be found in a properly configured system (as described in
+http://moinmo.in/HelpOnInstalling/BasicInstallation), it is likely that
+the configuration file will not be found. Edit the `moin.cgi` script to
+correct that. You will find a section labelled `a2)`, which is
+commented out. Change it, so that it points to your instance directory.
+
+sys.path.insert(0, '$INSTANCE')
+
+/!\ Attention here, the comment mark `#` has to be removed. /!\
+
+=== Check wikiconfig.py again ===
+Finally, check that the `wikiconfig.py` file in the instance directory
+contains correct paths for:
+
+ * `url_prefix_static` (static stuff like css/img/js)
+ * `data_dir` (the instance data directory) and
+ * `data_underlay_dir` (the instance underlay directory).
+
+/!\ You could use relative paths for those directories (relative to the
+location of `moin.cgi`), but to save yourself some headaches just use
+absolute paths.
+
+When following this guide the paths look like this:
+
+    data_dir = '$INSTANCE/data/'
+    data_underlay_dir = '$INSTANCE/underlay/'
+    url_prefix_static = '/moin_static180' # depends on moin version
+
+There are other settings you will likely want to alter, look at the
+bottom of http://moinmo.in/HelpOnInstalling/WikiInstanceCreation for
+more details about them.
+
+== Running as FastCGI (or similar) ==
+[...] # TODO: write this
+
+== Running as Standalone server ==
+[...] # TODO: write this
+
+== Running with mod_wsgi ==
+[...] # TODO: write this
+
+== Test the wiki ==
+Everything should work fine now. It is time to restart the Apache server
+(usually with `/etc/init.d/apache restart`, sometimes with
+`apachectl restart`) and perform the following steps:
+
+ * Access your new wiki with the URL `http://127.0.0.1/wiki/` (or the
+   name and port you have defined in the Apache configuration file). You
+   should see some wiki page - read it.
+ * Then go to the WikiSandBox page.
+ * Try to edit it and save your changes.
+ * If that works, see if your edit is shown on the RecentChanges page.
+ * If you see them, congratulations, your new wiki works! :)
+
+/!\ In case something goes wrong, have a look at the generic
+troubleshooting guide at:
+
+http://moinmo.in/HelpOnInstalling/TroubleShooting
+
+A common problem is the inability of the webserver to access your CGI
+script or static files. In case of the Apache webserver, you can check
+and augment your Apache config file for the following directives:
+
+  <Directory "$PREFIX/moin/htdocs/">
+     Order deny,allow
+     Allow from all
+  </Directory>
+
+  <Directory "$INSTANCE/cgi-bin">
+     Order deny,allow
+     Allow from all
+  </Directory>