Manual:Running MediaWiki on Ubuntu
|It has been suggested that this page or section be merged with Manual:Installing MediaWiki. (Discuss)|
This page explains how to install MediaWiki on an Ubuntu linux.
This installation procedure requires knowledge of issuing commands from a terminal (e.g. installing applications) and using a text editor (e.g. graphical: gedit, kate; text: nano, emacs, vi).
When text editing is required it can be carried out on the graphical desktop by pressing Alt-F2 and typing
gksudo gedit filename
Alternatively, editing can be done from a terminal
sudo nano filename
Of course, kate could be used instead of gedit or vi instead of nano.
- 1 Step-By-Step
- 2 Additional wiki configuration
- 3 See also
Double check that Ubuntu is up-to-date by running:
sudo apt-get update sudo apt-get upgrade
Install LAMP Stack
Ubuntu Server Edition makes LAMP (Apache, PHP, and MySQL) available for installation during the install process. During the installation step, make sure you choose to install a LAMP server. Alternately, you can install all of these packages from a normal Ubuntu installation using these commands:
sudo apt-get install apache2 mysql-server php5 php5-mysql libapache2-mod-php5
Opt. Useful Packages
These packages are not necessary but may be useful, depending on the installation:
|php-apc||Alternative PHP Cache.|
|inkscape||Alternative means of SVG thumbnailing, than ImageMagick. Sometimes it can better render SVGs originally created in Inkscape.|
|GD Library||Alternative to ImageMagick. Install libgd2-xpm libgd2-xpm-dev php5-gd.|
|phpmyadmin||MySQL administration tool.|
|vsftpd||FTP Server. (How To)|
|php5-cli||Ability to run PHP commands from the command line, which is useful for debugging and running maintenance scripts.|
sudo apt-get install php-apc php5-intl imagemagick phpmyadmin vsftpd php5-cli
|Warning:||The latest release of Ubuntu, 16.04, no longer packages MediaWiki. MediaWiki has to be manually installed. Previous versions of Ubuntu include a MediaWiki package, but it's MediaWiki version 1.19.x, for which support ended in May 2015. It is strongly recommended that MediaWiki be downloaded directly from download.|
This can be done from a browser or by
cd Downloads wget https://releases.wikimedia.org/mediawiki/1.26/mediawiki-1.26.2.tar.gz
- extract in your Web directory
- Ubuntu 14+: /var/lib/mediawiki
tar -xvzf /pathtofile/mediawiki-*.tar.gz sudo mkdir /var/lib/mediawiki sudo mv mediawiki-*/* /var/lib/mediawiki
- Ubuntu < 14: /var/www/html
tar -xvzf /pathtofile/mediawiki-*.tar.gz sudo mv mediawiki-*/* /var/www/html
Note: This step is not necessary if you were prompted to create a mysql root password during MySQL installation.
First, set up a mysql root password. Remember not to use same password for system root and mysql root. This will also clear your command history so that other users cannot get to your password.
mysqladmin -u root password "<enter the new password here>" history -c
|Warning:||Remember this user (root) and password because you will need them when you configure MediaWiki.|
Consider running mysql_secure_installation .
- from main page:
|This program enables you to improve the security of your MySQL installation in the following ways:
Optional: Configure PHP
Edit your PHP configuration file, php.ini. For Ubuntu 14.x it is at
/etc/php5/apache2/php.ini. Depending on Ubuntu version it may be located at
sudo nano /etc/php5/apache2/php.ini
Maximum upload file size
Assuming that various files are going to be uploaded to the Wiki as content, the limit on the maximum size of an upload has to be adjusted. About one-half way down is the File Uploads section. Change:
upload_max_filesize = 2M
to at least 20M. You may have to adjust this again in the future if you want bigger uploads.
Some PHP scripts require a lot of memory to run. To increase the maximum amount of memory a script can use, page down to about 21%, and change the following entry, if found, from
memory_limit = 8M
memory_limit = 128M
If it is already 128M or more, leave it as is.
|Warning:||This section only applies if you installed MediaWiki using apt-get or aptitude, which is not recommended.|
- Edit apache.conf file at /etc/mediawiki/apache.conf
sudo nano /etc/mediawiki/apache.conf
and un-comment this line:
Alias /mediawiki /var/lib/mediawiki
Save and exit out of the editor.
- Verify that the Mediawiki configuration is in Apache. Edit the Apache2 configuration file
sudo nano /etc/apache2.conf
sudo nano /etc/apache2/apache2.conf
according to appropriate location.
Look for this line. Add it if is not present:
- Restart Apache:
sudo apache2ctl restart
sudo service apache2 restart
Navigate your browser to http://localhost/mediawiki (for certain installations it may be http://localhost/mediawiki/config or http://wiki.hostname.com/config instead) and following the procedure given.
If this gives a 404 error then this technique may work:
sudo ln -s /var/lib/mediawiki mediawiki
- Pay close attention for "Checking environment..." in MediaWiki installation script.
This can solve a lot of problems by specifically identifying the source of any errors. Fill out the configuration form and continue.
Under Database Config, you may change the database name and DB username to new values, but you must turn on "Use superuser account", name:
giving the mysql root password you configured earlier.
The configuration process creates a custom LocalSettings.php that must be moved to the parent directory of the new wiki. The configuration page will give the exact directory/filename that must be moved:
sudo mv /var/lib/mediawiki/config/LocalSettings.php /var/lib/mediawiki
For added safety you can then remove the config subdirectory entirely:
sudo rm -rf config
And navigate your browser to http://localhost/mediawiki (or http://server_ip_address/mediawiki or http://server_ip_address/mediawiki/index.php) to see your new wiki.
Done! You now have a working Wiki
Additional wiki configuration
Mediawiki is configured by the LocalSettings.php file, usually found in
/var/www/wiki. Manual:LocalSettings.php has detailed information that may be useful. The following are changes that appear to be universally helpful
To edit LocalSettings.php use
gksudo gedit /etc/mediawiki/LocalSettings.php
or from a terminal
sudo nano /etc/mediawiki/LocalSettings.php
By default, the Wiki will not permit images to be uploaded. To change this find $wgEnableUploads and change it from false to true.
Specifying uploadable file types
You may want to modify the list of accepted extensions, which is stored within the $wgFileExtensions array. For example, you will not be able to upload PDF files without making this change.
If $wgFileExtensions is not already in LocalSettings.php add it at the end (before the ?> line, if one exists in your LocalSettings.php file):
$wgFileExtensions = array('pdf','png','jpg','jpeg','ogg','doc','xls','ppt','mp3','sxc','nse');
In addition to the $wgFileExtensions option, the following settings may cause files to be rejected (even if $wgStrictFileExtensions = false; is set):
- $wgFileBlacklist, a list of file extensions that are not uploadable
- $wgMimeTypeBlacklist, a list of forbidden MIME types.
If problems are still encountered with uploads, check the includes/DefaultSettings.php file.
Image file uploads
The images directory must be writable: For Ubuntu 9.04 and newer, the command is:
sudo chmod a+w /var/lib/mediawiki/images
For older Ubuntu:
sudo chmod a+w /var/www/wiki/images
|thumb option added to an
image: tag will automatically generate a thumbnail version of a picture — if support has been enabled, as follows:
- As mentioned above in options, the ImageMagick package must be installed:
sudo apt-get install imagemagick
- In LocalSettings.php, make sure the following settings are in place and not commented out.
They are normally about 80 lines down in the file marked "To enable image uploads":
$wgUseImageResize = true; $wgUseImageMagick = true; $wgImageMagickConvertCommand = "/usr/bin/convert";
Changing the logo
The $wgLogo variable specifies the graphical logo that gets displayed on the top left corner by default. However, the $wgLogo variable may not be present in LocalSettings.php by default - it must be added in manually to the bottom.
There is no standard for the size of the logo image, but 135x135 pixels will fit most skins. If the logo it is oversized for a specific skin it will show from the top left corner and clip the bottom/right of the image.
The logo file can be placed anywhere, but putting it in the top-level directory of the wiki is convenient. Fortunately, the variable $wgScriptPath contains the top directory of the wiki, so simply adding the following works well:
$wgLogo = "$wgScriptPath/wiki.jpg";
|Warning:||Do not simply change the default logo installed with MediaWiki (/skins/common/images/wiki.png); this file will be overwritten when you upgrade.|
The current installer for mediawiki comes with a package of 15 or so of the most popular extensions, but there are literally hundreds more. Go to http://www.mediawiki.org/wiki/Category:Extensions for a complete list.
A list of the other "standard" extensions included with Ubuntu can be found by just running this command:
Standard extensions can be installed with the mwenext command
sudo mwenext extensionname.php
- Example: installing ParserFunctions
sudo mwenext ParserFunctions.php
(If this fails the standard extension package needs to be installed with
sudo apt-get install mediawiki-extensions
Once enabled, it should be listed as a symbolic link in /etc/mediawiki-extensions/extensions-enabled. You should now be able to go to http://localhost/mediawiki/index.php/Special:Version and see ParserFunctions listed there as an installed extension to your mediawiki. Confirm it's functioning by putting
on a wiki page and saving.
Most MediaWiki extensions that are not available in the Ubuntu package system are downloaded in tarball (tar.gz) format and installed manually by putting the files into new subdirectory under extensions. The list of extensions is available here: Category:Extensions in Wikimedia version control
- Download the tarball, unpack it to the "extensions" directory (on Ubuntu: "/var/lib/mediawiki/extensions")
- Edit the "LocalSettings.php" (see above) to add a line reading
Confirm you have installed it properly, by going to the Special pages in your wiki (link on left side) and choosing Version. All installed extensions are listed with versions, authors, and links to their home pages.
- Example: installing MiniDonation
For an example, let's take the relatively simple extension called MiniDonation. This extension lets you put a <donationform> tag in your wiki code, and it will display a link to paypal on the page. The site for MiniDonation is here: Extension:MiniDonation
Download the tarball (save it to ~/Desktop), then unpack the files to the extensions directory:
cd /var/lib/mediawiki/extensions sudo tar -zxvf ~/Desktop/MiniDonation
Next, modify LocalSettings with the Include directive specified in the instructions
sudo nano /etc/mediawiki/LocalSettings.php
Finally, check http://localhost/mediawiki/index.php/Special:Version - it should now list MiniDonation there. Edit a wikipage and add a <donationform> tag to it, save the page and a functional paypal button should be available.
- Standard MediaWiki extensions (such as Cite.php) included in the mediawiki-exstensions package can be upgraded to a newer version.
The extension must be disabled using the command
before installing the files from the new version into the correct directory in /var/lib/mediawiki/extensions.
- Manually installed extensions are upgraded by simply repeating the instructions, above, for installing other exstensions.
|Warning:||Some versions of extensions will not work with certain versions of MediaWiki (or with other versions of other extensions that they depend upon). A "fatal error" will display when on certain MediaWiki pages (even including "Special:Version" page), or the wiki will not display any content at all.
Review the errors stored in /var/log/apache2/errors.log for a hint as to what is wrong.
To use /wiki/* instead of /wiki/index.php/* on Ubuntu, follow the recommended short URL guide using
'/mediawiki' as the script path instead of
'/w' and placing the rewrites in /etc/apache2/conf.d/mediawiki.conf.
- Canonical maintains a MediaWiki page with more information
- Debian MediaWiki page
- Ubuntuguide.org provides detailed instructions for setting up MediaWiki on Ubuntu and Kubuntu, including multiple wikis and nested subwikis.
- Start to end Mediawiki Setup Guide at ofswiki.org, closely referencing official docs, support for multiple distros including Debian/Ubuntu, automation and a minimal style