Once you have MySQL running nicely, you can set up the database server to start at boot time by switching to the install directory, copying the startup script to the init directory and then installing it at the correct run levels:
cd /rpm/MySQL/mysql-m.n.xx or cd /rpm/MySQL/mysql-m.n.xx/bldprod su cp support-files/mysql.server /etc/rc.d/init.d/mysql chmod ugo+x /etc/rc.d/init.d/mysql /sbin/chkconfig --add mysql /sbin/chkconfig mysql on
After that, if you wish, you start the MySQL daemon do this:
/etc/rc.d/init.d/mysql start
It should start/stop automatically when the system is brought up/down.