just setup mysql on centos and forgot to set it to auto-start on boot - there the quick fix
sudo /sbin/chkconfig –level 2345 mysqld on
check that this worked as expected by running the chkconfig list
/sbin/chkconfig –list
should result in the below output
mysqld 0:off 1:off 2:on 3:on 4:on 5:on 6:off