Improvements to mod_wsgi setup documentation.

docs/setup.rst

@@ -1,573 +1,601 b''
 .. _setup:
 
 Setup
 =====
 
 
 Setting up RhodeCode
 --------------------
 
 First, you will need to create a RhodeCode configuration file. Run the 
 following command to do this::
  
     paster make-config RhodeCode production.ini
 
 - This will create the file `production.ini` in the current directory. This
   configuration file contains the various settings for RhodeCode, e.g proxy 
   port, email settings, usage of static files, cache, celery settings and 
   logging.
 
 
 Next, you need to create the databases used by RhodeCode. I recommend that you
 use sqlite (default) or postgresql. If you choose a database other than the
 default ensure you properly adjust the db url in your production.ini
 configuration file to use this other database. Create the databases by running
 the following command::
 
     paster setup-app production.ini
 
 This will prompt you for a "root" path. This "root" path is the location where
 RhodeCode will store all of its repositories on the current machine. After
 entering this "root" path ``setup-app`` will also prompt you for a username 
 and password for the initial admin account which ``setup-app`` sets up for you.
 
 - The ``setup-app`` command will create all of the needed tables and an admin
   account. When choosing a root path you can either use a new empty location, 
   or a location which already contains existing repositories. If you choose a 
   location which contains existing repositories RhodeCode will simply add all 
   of the repositories at the chosen location to it's database. (Note: make 
   sure you specify the correct path to the root).
 - Note: the given path for mercurial_ repositories **must** be write accessible
   for the application. It's very important since the RhodeCode web interface 
   will work without write access, but when trying to do a push it will 
   eventually fail with permission denied errors unless it has write access.
 
 You are now ready to use RhodeCode, to run it simply execute::
  
     paster serve production.ini
  
 - This command runs the RhodeCode server. The web app should be available at the 
   127.0.0.1:5000. This ip and port is configurable via the production.ini 
   file created in previous step
 - Use the admin account you created above when running ``setup-app`` to login 
   to the web app.
 - The default permissions on each repository is read, and the owner is admin. 
   Remember to update these if needed.
 - In the admin panel you can toggle ldap, anonymous, permissions settings. As
   well as edit more advanced options on users and repositories
 
 Try copying your own mercurial repository into the "root" directory you are
 using, then from within the RhodeCode web application choose Admin >
 repositories. Then choose Add New Repository. Add the repository you copied 
 into the root. Test that you can browse your repository from within RhodeCode 
 and then try cloning your repository from RhodeCode with::
 
     hg clone http://127.0.0.1:5000/<repository name>
 
 where *repository name* is replaced by the name of your repository.
 
 Using RhodeCode with SSH
 ------------------------
 
 RhodeCode currently only hosts repositories using http and https. (The addition
 of ssh hosting is a planned future feature.) However you can easily use ssh in
 parallel with RhodeCode. (Repository access via ssh is a standard "out of
 the box" feature of mercurial_ and you can use this to access any of the
 repositories that RhodeCode is hosting. See PublishingRepositories_)
 
 RhodeCode repository structures are kept in directories with the same name 
 as the project. When using repository groups, each group is a subdirectory.
 This allows you to easily use ssh for accessing repositories.
 
 In order to use ssh you need to make sure that your web-server and the users 
 login accounts have the correct permissions set on the appropriate directories.
 (Note that these permissions are independent of any permissions you have set up
 using the RhodeCode web interface.)
 
 If your main directory (the same as set in RhodeCode settings) is for example
 set to **/home/hg** and the repository you are using is named `rhodecode`, then
 to clone via ssh you should run::
 
     hg clone ssh://[e-mail]/home/hg/rhodecode
 
 Using other external tools such as mercurial-server_ or using ssh key based
 authentication is fully supported.
 
 Note: In an advanced setup, in order for your ssh access to use the same
 permissions as set up via the RhodeCode web interface, you can create an
 authentication hook to connect to the rhodecode db and runs check functions for
 permissions against that.
     
 Setting up Whoosh full text search
 ----------------------------------
 
 Starting from version 1.1 the whoosh index can be build by using the paster
 command ``make-index``. To use ``make-index`` you must specify the configuration
 file that stores the location of the index. You may specify the location of the 
 repositories (`--repo-location`).  If not specified, this value is retrieved 
 from the RhodeCode database.  This was required prior to 1.2.  Starting from 
 version 1.2 it is also possible to specify a comma separated list of 
 repositories (`--index-only`) to build index only on chooses repositories 
 skipping any other found in repos location
 
 You may optionally pass the option `-f` to enable a full index rebuild. Without
 the `-f` option, indexing will run always in "incremental" mode.
 
 For an incremental index build use::
 
 	paster make-index production.ini 
 
 For a full index rebuild use::
 
 	paster make-index production.ini -f 
 
 
 building index just for chosen repositories is possible with such command::
  
  paster make-index production.ini --index-only=vcs,rhodecode
 
 
 In order to do periodical index builds and keep your index always up to date.
 It's recommended to do a crontab entry for incremental indexing. 
 An example entry might look like this::
  
     /path/to/python/bin/paster make-index /path/to/rhodecode/production.ini 
   
 When using incremental mode (the default) whoosh will check the last
 modification date of each file and add it to be reindexed if a newer file is
 available. The indexing daemon checks for any removed files and removes them
 from index.
 
 If you want to rebuild index from scratch, you can use the `-f` flag as above,
 or in the admin panel you can check `build from scratch` flag.
 
 
 Setting up LDAP support
 -----------------------
 
 RhodeCode starting from version 1.1 supports ldap authentication. In order
 to use LDAP, you have to install the python-ldap_ package. This package is 
 available via pypi, so you can install it by running
 
 using easy_install::
 
     easy_install python-ldap
  
 using pip::
 
     pip install python-ldap
 
 .. note::
    python-ldap requires some certain libs on your system, so before installing 
    it check that you have at least `openldap`, and `sasl` libraries.
 
 LDAP settings are located in admin->ldap section,
 
 Here's a typical ldap setup::
 
  Connection settings
  Enable LDAP          = checked
  Host                 = host.example.org
  Port                 = 389
  Account              = <account>
  Password             = <password>
  Connection Security  = LDAPS connection
  Certificate Checks   = DEMAND
 
  Search settings
  Base DN              = CN=users,DC=host,DC=example,DC=org
  LDAP Filter          = (&(objectClass=user)(!(objectClass=computer)))
  LDAP Search Scope    = SUBTREE
 
  Attribute mappings
  Login Attribute      = uid
  First Name Attribute = firstName
  Last Name Attribute  = lastName
  E-mail Attribute     = mail
 
 .. _enable_ldap:
 
 Enable LDAP : required
     Whether to use LDAP for authenticating users.
 
 .. _ldap_host:
 
 Host : required
     LDAP server hostname or IP address.
 
 .. _Port:
 
 Port : required
     389 for un-encrypted LDAP, 636 for SSL-encrypted LDAP.
 
 .. _ldap_account:
 
 Account : optional
     Only required if the LDAP server does not allow anonymous browsing of
     records.  This should be a special account for record browsing.  This
     will require `LDAP Password`_ below.
 
 .. _LDAP Password:
 
 Password : optional
     Only required if the LDAP server does not allow anonymous browsing of
     records.
 
 .. _Enable LDAPS:
 
 Connection Security : required
     Defines the connection to LDAP server
 
     No encryption
         Plain non encrypted connection
         
     LDAPS connection
         Enable ldaps connection. It will likely require `Port`_ to be set to 
         a different value (standard LDAPS port is 636). When LDAPS is enabled 
         then `Certificate Checks`_ is required.
         
     START_TLS on LDAP connection
         START TLS connection
 
 .. _Certificate Checks:
 
 Certificate Checks : optional
     How SSL certificates verification is handled - this is only useful when
     `Enable LDAPS`_ is enabled.  Only DEMAND or HARD offer full SSL security 
     while the other options are susceptible to man-in-the-middle attacks.  SSL
     certificates can be installed to /etc/openldap/cacerts so that the
     DEMAND or HARD options can be used with self-signed certificates or
     certificates that do not have traceable certificates of authority.
 
     NEVER
         A serve certificate will never be requested or checked.
 
     ALLOW
         A server certificate is requested.  Failure to provide a
         certificate or providing a bad certificate will not terminate the
         session.
 
     TRY
         A server certificate is requested.  Failure to provide a
         certificate does not halt the session; providing a bad certificate
         halts the session.
 
     DEMAND
         A server certificate is requested and must be provided and
         authenticated for the session to proceed.
 
     HARD
         The same as DEMAND.
 
 .. _Base DN:
 
 Base DN : required
     The Distinguished Name (DN) where searches for users will be performed.
     Searches can be controlled by `LDAP Filter`_ and `LDAP Search Scope`_.
 
 .. _LDAP Filter:
 
 LDAP Filter : optional
     A LDAP filter defined by RFC 2254.  This is more useful when `LDAP
     Search Scope`_ is set to SUBTREE.  The filter is useful for limiting
     which LDAP objects are identified as representing Users for
     authentication.  The filter is augmented by `Login Attribute`_ below.
     This can commonly be left blank.
 
 .. _LDAP Search Scope:
 
 LDAP Search Scope : required
     This limits how far LDAP will search for a matching object.
 
     BASE
         Only allows searching of `Base DN`_ and is usually not what you
         want.
 
     ONELEVEL
         Searches all entries under `Base DN`_, but not Base DN itself.
 
     SUBTREE
         Searches all entries below `Base DN`_, but not Base DN itself.
         When using SUBTREE `LDAP Filter`_ is useful to limit object
         location.
 
 .. _Login Attribute:
 
 Login Attribute : required        
     The LDAP record attribute that will be matched as the USERNAME or
     ACCOUNT used to connect to RhodeCode.  This will be added to `LDAP
     Filter`_ for locating the User object.  If `LDAP Filter`_ is specified as
     "LDAPFILTER", `Login Attribute`_ is specified as "uid" and the user has
     connected as "jsmith" then the `LDAP Filter`_ will be augmented as below
     ::
 
         (&(LDAPFILTER)(uid=jsmith))
 
 .. _ldap_attr_firstname:
 
 First Name Attribute : required
     The LDAP record attribute which represents the user's first name.
 
 .. _ldap_attr_lastname:
 
 Last Name Attribute : required
     The LDAP record attribute which represents the user's last name.
 
 .. _ldap_attr_email:
 
 Email Attribute : required
     The LDAP record attribute which represents the user's email address.
 
 If all data are entered correctly, and python-ldap_ is properly installed
 users should be granted access to RhodeCode with ldap accounts.  At this
 time user information is copied from LDAP into the RhodeCode user database.
 This means that updates of an LDAP user object may not be reflected as a
 user update in RhodeCode.
 
 If You have problems with LDAP access and believe You entered correct
 information check out the RhodeCode logs, any error messages sent from LDAP
 will be saved there.
 
 Active Directory
 ''''''''''''''''
 
 RhodeCode can use Microsoft Active Directory for user authentication.  This
 is done through an LDAP or LDAPS connection to Active Directory.  The
 following LDAP configuration settings are typical for using Active
 Directory ::
 
  Base DN              = OU=SBSUsers,OU=Users,OU=MyBusiness,DC=v3sys,DC=local
  Login Attribute      = sAMAccountName
  First Name Attribute = givenName
  Last Name Attribute  = sn
  E-mail Attribute     = mail
 
 All other LDAP settings will likely be site-specific and should be
 appropriately configured.
 
 
 
 Hook management
 ---------------
 
 Hooks can be managed in similar way to this used in .hgrc files.
 To access hooks setting click `advanced setup` on Hooks section of Mercurial
 Settings in Admin. 
 
 There are 4 built in hooks that cannot be changed (only enable/disable by
 checkboxes on previos section).
 To add another custom hook simply fill in first section with 
 <name>.<hook_type> and the second one with hook path. Example hooks
 can be found at *rhodecode.lib.hooks*. 
 
 
 Setting Up Celery
 -----------------
 
 Since version 1.1 celery is configured by the rhodecode ini configuration files.
 Simply set use_celery=true in the ini file then add / change the configuration 
 variables inside the ini file.
 
 Remember that the ini files use the format with '.' not with '_' like celery.
 So for example setting `BROKER_HOST` in celery means setting `broker.host` in
 the config file.
 
 In order to start using celery run::
 
  paster celeryd <configfile.ini>
 
 
 .. note::
    Make sure you run this command from the same virtualenv, and with the same 
    user that rhodecode runs.
    
 HTTPS support
 -------------
 
 There are two ways to enable https:
 
 - Set HTTP_X_URL_SCHEME in your http server headers, than rhodecode will
   recognize this headers and make proper https redirections
 - Alternatively, change the `force_https = true` flag in the ini configuration 
   to force using https, no headers are needed than to enable https
 
 
 Nginx virtual host example
 --------------------------
 
 Sample config for nginx using proxy::
 
     server {
        listen          80;
        server_name     hg.myserver.com;
        access_log      /var/log/nginx/rhodecode.access.log;
        error_log       /var/log/nginx/rhodecode.error.log;
        location / {
                root /var/www/rhodecode/rhodecode/public/;
                if (!-f $request_filename){
                    proxy_pass      http://127.0.0.1:5000;
                }
                #this is important if you want to use https !!!
                proxy_set_header X-Url-Scheme $scheme;
                include         /etc/nginx/proxy.conf;  
        }
     }  
   
 Here's the proxy.conf. It's tuned so it will not timeout on long
 pushes or large pushes::
 
     proxy_redirect              off;
     proxy_set_header            Host $host;
     proxy_set_header            X-Host $http_host;
     proxy_set_header            X-Real-IP $remote_addr;
     proxy_set_header            X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header            Proxy-host $proxy_host;
     client_max_body_size        400m;
     client_body_buffer_size     128k;
     proxy_buffering             off;
     proxy_connect_timeout       7200;
     proxy_send_timeout          7200;
     proxy_read_timeout          7200;
     proxy_buffers               8 32k;
  
 Also, when using root path with nginx you might set the static files to false
 in the production.ini file::
 
     [app:main]
       use = egg:rhodecode
       full_stack = true
       static_files = false
       lang=en
       cache_dir = %(here)s/data
 
 In order to not have the statics served by the application. This improves speed.
 
 
-Apache virtual host example
----------------------------
+Apache virtual host reverse proxy example
+-----------------------------------------
 
 Here is a sample configuration file for apache using proxy::
 
     <VirtualHost *:80>
             ServerName hg.myserver.com
             ServerAlias hg.myserver.com
     
             <Proxy *>
               Order allow,deny
               Allow from all
             </Proxy>
     
             #important !
             #Directive to properly generate url (clone url) for pylons
             ProxyPreserveHost On
     
             #rhodecode instance
             ProxyPass / http://127.0.0.1:5000/
             ProxyPassReverse / http://127.0.0.1:5000/
             
             #to enable https use line below
             #SetEnvIf X-Url-Scheme https HTTPS=1
             
     </VirtualHost> 
 
 
 Additional tutorial
 http://wiki.pylonshq.com/display/pylonscookbook/Apache+as+a+reverse+proxy+for+Pylons
 
 
 Apache as subdirectory
 ----------------------
 
 Apache subdirectory part::
 
     <Location /<someprefix> >
       ProxyPass http://127.0.0.1:5000/<someprefix>
       ProxyPassReverse http://127.0.0.1:5000/<someprefix>
       SetEnvIf X-Url-Scheme https HTTPS=1
     </Location> 
 
 Besides the regular apache setup you will need to add the following line
 into [app:main] section of your .ini file::
 
     filter-with = proxy-prefix
 
 Add the following at the end of the .ini file::
 
     [filter:proxy-prefix]
     use = egg:PasteDeploy#prefix
     prefix = /<someprefix> 
 
 
 then change <someprefix> into your choosen prefix
 
 Apache's WSGI config
 --------------------
 
+Alternatively, RhodeCode can be set up with Apache under mod_wsgi. For
+that, you'll need to:
+
+- Install mod_wsgi. If using a Debian-based distro, you can install
+  the package libapache2-mod-wsgi::
+    aptitude install libapache2-mod-wsgi
+- Enable mod_wsgi::
+    a2enmod wsgi
+- Create a wsgi dispatch script, like the one below. Make sure you
+  check the paths correctly point to where you installed RhodeCode
+  and its Python Virtual Environment.
+- Enable the WSGIScriptAlias directive for the wsgi dispatch script,
+  as in the following example. Once again, check the paths are
+  correctly specified.
+
+Here is a sample excerpt from an Apache Virtual Host configuration file::
+
+    WSGIDaemonProcess pylons user=www-data group=www-data processes=1 \
+        threads=4 \
+        python-path=/home/web/rhodecode/pyenv/lib/python2.6/site-packages
+    WSGIScriptAlias / /home/web/rhodecode/dispatch.wsgi
 
 Example wsgi dispatch script::
 
     import os
     os.environ["HGENCODING"] = "UTF-8"
     os.environ['PYTHON_EGG_CACHE'] = '/home/web/rhodecode/.egg-cache'
     
     # sometimes it's needed to set the curent dir
     os.chdir('/home/web/rhodecode/') 
     
+    import site
+    site.addsitedir("/home/web/rhodecode/pyenv/lib/python2.6/site-packages")
+    
     from paste.deploy import loadapp
     from paste.script.util.logging_config import fileConfig
 
     fileConfig('/home/web/rhodecode/production.ini')
     application = loadapp('config:/home/web/rhodecode/production.ini')
 
+Note: when using mod_wsgi you'll need to install the same version of
+Mercurial that's inside RhodeCode's virtualenv also on the system's Python
+environment.
+
 
 Other configuration files
 -------------------------
 
 Some example init.d scripts can be found here, for debian and gentoo:
 
 https://rhodecode.org/rhodecode/files/tip/init.d
 
 
 Troubleshooting
 ---------------
 
 :Q: **Missing static files?**
 :A: Make sure either to set the `static_files = true` in the .ini file or
    double check the root path for your http setup. It should point to 
    for example:
    /home/my-virtual-python/lib/python2.6/site-packages/rhodecode/public
    
 | 
 
 :Q: **Can't install celery/rabbitmq**
 :A: Don't worry RhodeCode works without them too. No extra setup is required.
 
 |
  
 :Q: **Long lasting push timeouts?**
 :A: Make sure you set a longer timeouts in your proxy/fcgi settings, timeouts
     are caused by https server and not RhodeCode.
     
 | 
 
 :Q: **Large pushes timeouts?**
 :A: Make sure you set a proper max_body_size for the http server.
 
 |
 
 :Q: **Apache doesn't pass basicAuth on pull/push?**
 :A: Make sure you added `WSGIPassAuthorization true`.
 
 For further questions search the `Issues tracker`_, or post a message in the 
 `google group rhodecode`_
 
 .. _virtualenv: http://pypi.python.org/pypi/virtualenv
 .. _python: http://www.python.org/
 .. _mercurial: http://mercurial.selenic.com/
 .. _celery: http://celeryproject.org/
 .. _rabbitmq: http://www.rabbitmq.com/
 .. _python-ldap: http://www.python-ldap.org/
 .. _mercurial-server: http://www.lshift.net/mercurial-server.html
 .. _PublishingRepositories: http://mercurial.selenic.com/wiki/PublishingRepositories
 .. _Issues tracker: https://bitbucket.org/marcinkuzminski/rhodecode/issues
 .. _google group rhodecode: http://groups.google.com/group/rhodecode