Sabayon 16 - MySQL Server unable to start

After installing Sabayon 16, I needed to install MySQL Server. I have followed two tutorials, but both of them fails to me. The first tutorial says to install dev-db/mysql and then execute sudo /usr/bin/mysql_install_db –basedir=/usr but an error saying the command was not found appears. I found out that the command above is an script located at usr/share/mysql/scrips. I have executed it, trillions of messages appeared but now I cannot start mysql or mariadb. The error is >unable to execute /etc/init.d/mysql: No such file or directory but listing /usr/init.d shows me mysql. What to do?