Manual:Installing MediaWiki/ca

Guia d'instal·lació | Què és Mediawiki

Llistat de funcions (en) | Requisits

Instal·lació | Configuració

MediaWiki s'instal·la utilitzant un script d'instal·lació interactiu amb una interfície web. Abans d'executar l'script, heu d'efectuar algunes operacions. Primer assegureu-vos que heu instal·lat els requisits Apache, PHP i MySQL. Llavors heu d'obtenir una còpia del programari i baixar-la sobre el vostre servidor. Podrieu necessitar crear una base de dades per al wiki. En cas necessari, creeu un compte sobre el vostre servidor web seguint les instruccions donades al Manual:Installation/Creating system accounts.

MediaWiki pot ser difícil d'instal·lar per a l'usuari mitjà que no té experiència amb Apache, PHP i MySQL. La majoria dels usuaris que desitgin utilitzar programari wiki es poden beneficiar d'utilitzar multitud de wiki lliure (vegeu una llista a Wikibooks) o mitjançant software appliance.

Nota: Per a les informacions de reparació, veieu Manual:Errors and Symptoms#Installation Errors.

Download MediaWiki Software

Download MediaWiki from the official download page or from subversion.

The downloaded files are in .tar.gz format, so will need to be uncompressed before use. This can be done locally (and then uploaded via FTP) or directly on your server. This is usually done with software such as 7-Zip (free), WinZip, WinRAR or IZArc (free) on Windows. On Linux and Mac OS X, you can untar the file using this command:

tar xvzf mediawiki-*.tar.gz

If you have not already uploaded the files to your web server, do so now. Upload the files to your web server's web directory either by directly copying the unzipped folder or by using an FTP client such as FileZilla (Open Source Software, Windows) or Cyberduck (OSX). If you installed Apache, the correct directory is specified in your httpd.conf file (its typically <apache-folder>/htdocs). If you are using a Linux or Unix you can instead copy the files to any directory on your server and then make a symbolic link to that folder from your web server's web directory.

Rename the uploaded folder to whatever you would like to have in the URL. If your web server is running as http://localhost for example, uploading MediaWiki to /testwiki/ directory would mean you would access your wiki at http://localhost/testwiki/index.php.

This (renamed) folder will now be referred as <MediaWiki-folder>.

Prepare the Directories

MediaWiki needs to be able to write to the <MediaWiki-folder>/config directory when it runs its installation script. If you haven't done so already, you need to change the permission settings for the config subdirectory so that it is writable by the webserver. If you are using FileZilla, right-click on the config directory, select "attributes...", and check "Write" under "Owner". If it prompts you for a number instead or if you are using a command-line interface, use 755 (Use 777 on Linux except for RedHat Linux). Alternately, you may be able to change permissions using a "control panel" provided by your web host.

Depending on the server configuration, in some cases you have to check all boxes (777) in FileZilla, to be able to run the install-script of MediaWiki.

On Unix or Linux, if you have admin rights, you can run the command chmod 755 config in your wiki directory.

Nota: MediaWiki should be installed into a subdirectory of your document root, not in the document root itself. That is, if your domain my.domain.org is for instance mapped to the document root /home/mysqld/public_html, then mediawiki should be installed into /home/mysqld/public_html/w or similar. MediaWiki will then become available under http://my.domain.org/w. This is particularly important if you are going to use short URLs.

Create a database

If you know the root password on your database, the MediaWiki installation script can create a new database for you. If this is the case, you can skip to the Run the installation script section below. If you don't know the root password, for example if you are on a hosted server, you will have to create a new database now. Currently, you must use either MySQL or Postgres to store the actual contents of your wiki.

MySQL

• You need to create a MySQL database and a user before installing MediaWiki. You can do this using various control panels such as PhpMyAdmin, which are often available from shared hosts, or you may be able to use ssh to login to your host and type the commands into a MySQL prompt. See the corresponding documentation. Alternatively, contact your host provider to have them create an account for you
  1. Download and install MySQL 5.0. It should put itself in /usr/local/mysql
     
  2. Check and see if the database server is running ("/usr/local/mysql/bin/mysqladmin status"), If not, sudo /usr/local/mysql/bin/safe_mysqld &.
     (For Fedora Core 5, use /usr/bin/mysqld_safe)
     
     1. Another way to start initially the MySQL server is to run the configure script available at the root of the installation. It creates the initial tables and automatically starts the mysql daemon
  3. Set a password for the "root" account on your database server. /usr/local/mysql/bin/mysqladmin -u root password yourpassword
     
  4. Set up a user in MySQL for your Wiki--do this in your terminal: /usr/local/mysql/bin/mysql -u root -p mysql
     
  5. This starts up the MySQL command line client. Now, do this in the client:

 create database wikidb;
 grant create, select, insert, update, delete, alter, lock tables on wikidb.* to 'wikiuser'@'localhost' identified by 'password';

If your database is not running on the same server as your web server, you need to give the appropriate web server hostname -- mediawiki.example.com in my example -- as follows:

 grant create, select, insert, update, delete, alter, lock tables on wikidb.* to
 'wikiuser'@'mediawiki.example.com' identified by 'password';

Postgres

If you are using Postgres, you will need to either have a database and user created for you, or simply supply the name of a Postgres user with "superuser" privileges to the configuration form. Often, this is the database user named postgres.

The database that MediaWiki will use needs to have both plpgsql and tsearch2 installed. The installer script will try to install plpgsql, but you may need to install tsearch2 yourself. (tsearch2 is used for searching the text of your wiki). Here's one way to do most of the setup. This is for a Unix-like system, and assumes that you have already installed the plpgsql and tsearch2 modules. In this example, we'll create a database named wikidb, owned by a user named wikiuser. From the command-line, as the postgres user, perform the following steps.

 createuser -S -D -R -P -E wikiuser (then enter the password)
 createdb -O wikiuser wikidb
 createlang plpgsql wikidb

NOTE If you're using PostgreSQL 8.3.x, you don't need to perform the following steps to install tsearch2 since it has been integrated into the core.

Adding tsearch2 to the database is not a simple step, but hopefully it will already be done for you by whatever packaging process installed the tsearch2 module. In any case, the installer will let you know right away if it cannot find tsearch2.

The above steps are not all necessary, as the installer will try and do some of them for you if supplied with a superuser name and password.

For installing tsearch2 to the wikidb database under Windows, do the following steps:

1. find tsearch2.sql (probably under .\PostgreSQL\8.x\share\contrib) and copy it to the postgresql\8.x\bin directory;
2. from a command prompt at the postgresql\8.x\bin directory, type "psql wikidb < tsearch2.sql -U wikiuser";
3. it will prompt you for the password for wikiuser;

That's it!

Point (2) seems only to work on windows, cause on debian linux 4.0 (etch) only user postgres is allowed to use language c. so there it must be called by:

su - postgres -c psql wikidb < tsearch2.sql

Afterwards you must grant select rights to wikiuser to the tsearch tables and insert the correct locale.

Warning If you use PostgreSQL 8.2 or early, you must replace “pg_ts_config” to “pg_ts_cfg” and "pg_ts_config_map" to "pg_ts_cfgmap" in the next commands.

su - postgres
psql -d wikidb -c "grant select on pg_ts_config to wikiuser;"
psql -d wikidb -c "grant select on pg_ts_config_map to wikiuser;"
psql -d wikidb -c "grant select on pg_ts_dict to wikiuser;"
psql -d wikidb -c "grant select on pg_ts_parser to wikiuser;"
psql -d wikidb -c "update pg_ts_cfg set locale = current_setting('lc_collate') where ts_name = 'default' and prs_name='default';"

Warning Last command does not work in PostgreSQL 8.3.

If you receive an error similar to "ERROR: relation "pg_ts_cfg" does not exist" when executing the above statements, try installing tsearch2 to the wikidb database again, but instead use these two separate steps (and then try the grant statements again):

1) su - postgres
2) psql wikidb -f tsearch2.sql

Run the installation script

Once all of the above steps are complete, you can complete the installation through web browser by following instructions mentioned there on Manual:Config script page.

Keep up to date!

Subscribe to our release announcements mailing list

Once installed, make sure you stay up to date with releases, and keep your server secure!

Installation assistance

• FAQ: FAQ#Installation_and_configuration
• mediawiki-l (Mailing List) is the high-traffic mailing list to ask for support.
• MediaWiki Users (Forum) is a user to user Mediawiki support forum

See also

• Manual:$wgEnableUploads to enable image/files upload.
• Manual:Timezone to set default timezone of your wiki from UTC/GMT to your timezone. This reflects in History tab and other places.
• Extension:Cite/Cite.php, install this extension so that <ref> and </ref> tags work as expected.
• Manual:Configuring MediaWiki for links to more advanced configuration.
• Manual:Short URL for having more user friendly url to article pages.
• Manual:Wiki family to setup multiple instances of MediaWiki with single set of MediaWiki files.