http://www.linuxquestions.org/questions/answers/438
http://www.sebszhost.com/mandraketutorial.html
Install MySQL: “urpmi mysql”, then choose “1”, then choose “1”, and then choose “y”. This will install a lot of things, be patient.
ERROR: 1062 Duplicate entry ‘localhost-root’ for key 1
ERROR: 1062 Duplicate entry ‘localhost-‘ for key 1
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More information on package MySQL-4.1.11-1mdk.i586
As a security measure networking in the mysql server has been disabled per
default, only localhost connections will work. This is because the mysql
root user has no password in a default install and that leaves the MySQL
server open for anyone to use.
To enable networking the user has to edit or delete the
/etc/sysconfig/mysqld file.
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[root@localhost ~]#