轉載：https://www.cnblogs.com/vickygu2007/p/5066409.html

#mysqldump -uroot -p --all-databases > databases.sql

#service mysqld stop

#yum remove mysql mysql-*

#rpm -qa ¦ grep mysql

#yum remove mysql mysql-server mysql-libs compat-mysql51

#yum list installed | grep mysql

#yum remove mysql-libs

#rpm -Uvh http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm

#yum install mysql-community-server

#mysql -V

#service mysqld start

centOS 6.5下升級mysql，從5.1升級到5.6