How to completely uninstall mysql in centos

Mysql installed in yum mode

1, yum remove mysql-server mysql-libs compat-mysql51
2. rm-rf/var/lib/mysql
3. rm/etc/my. cnf

Check whether there is any mysql software:
Rpm-qa | grep mysql

If yes, continue to delete it.

Mysql installed in rpm Mode

A) check whether mysql is installed with an rpm package in the system:

[Root @ localhost opt] # rpm-qa | grep-I mysql
MySQL-server-5.6.17-1.el6.i686
MySQL-client-5.6.17-1.el6.i686

B) uninstall mysql

[Root @ localhost local] # rpm-e MySQL-server-5.6.17-1.el6.i686
[Root @ localhost local] # rpm-e MySQL-client-5.6.17-1.el6.i686

C) delete the mysql service

[Root @ localhost local] # chkconfig -- list | grep-I mysql
[Root @ localhost local] # chkconfig -- del mysql

D) delete the scattered mysql folder.

[Root @ localhost local] # whereis mysql or find/-name mysql

Mysql:/usr/lib/mysql/usr/share/mysql

Clear all related mysql directories and files
Rm-rf/usr/lib/mysql
Rm-rf/usr/share/mysql

Rm-rf/usr/my. cnf

After completing the preceding steps, mysql should have been fully uninstalled.