MySQL on OpenBSD

# pkg_add mysql-server-3.23.57p3.tgz

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You appear to already have a MySQL database directory in /var/mysql
The database directory has been preserved. If you want to start
from the default database setup, you should perform these steps
as root:
rm -rf /var/mysql
/usr/local/bin/mysql_install_db
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===> Using _mysql group for MySQL ===> Using _mysql user for MySQL
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WARNING!
This port has changed the user/group it uses. If you installed this port
before, ensure all permissions are set correctly.
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# /usr/local/mysql/bin/safe_mysqld --user=_mysql &
# /usr/local/mysql/bin/mysqladmin -u root shutdown