From LQWiki

To set up mediawiki with a SuSE Linux distribution, issue the commands

yast2 -i apache2
yast2 -i mysql
yast2 -i mediawiki
/etc/init.d/apache2 start
/etc/init.d/mysql start

Then, point your browser to http://localhost/mediawiki and continue as instructed. Your root database password is blank ("").