How to uninstall MySQL 8.0 version under Linux

1. Shut down MySQL

[root@localhost /]# service mysqld stop
Redirecting to /bin/systemctl stop mysqld.service

2. Check the current installation of MySQL and find out whether MySQL was installed before

[root@localhost /]# rpm -qa|grep -i mysql
mysql-community-client-8.0.13-1.el7.x86_64
mysql-community-libs-8.0.13-1.el7.x86_64
mysql-community-common-8.0.13-1.el7.x86_64
mysql-community-server-8.0.13-1.el7.x86_64

3. Execute the command to delete the installed MySQL

[root@localhost /]# rpm -ev mysql-community-client-8.0.13-1.el7.x86_64

Error:

error: Failed dependencies:
mysql-community-client(x86-64) >= 8.0.0 is needed by (installed) mysql-community-server-8.0.13-1.el7.x86_64

The reason is that the dependency package is wrong. Execute the following command to solve it:

[root@localhost /]# rpm -ev mysql-community-client-8.0.13-1.el7.x86_64 --nodeps

The remaining ones are also executed according to the above operations, plus --nodeps

Then execute the # rpm -qa|grep -i mysql command to check whether the deletion is successful.

Four: Check the directory of the previously installed MySQL and delete it

[root@localhost /]# find / -name mysql
/var/lib/mysql
/var/lib/mysql/mysql
/usr/lib64/mysql
/usr/share/mysql
[root@localhost /]# rm -rf /var/lib/mysql
[root@localhost /]# rm -rf /var/lib/mysql/mysql
[root@localhost /]# rm -rf /usr/lib64/mysql
[root@localhost /]# rm -rf /usr/share/mysql

Five: Delete my.cnf

After uninstallation, /etc/my.cnf will not be deleted and needs to be deleted manually.

[root@localhost /]# rm -rf /etc/my.cnf

Finally, check whether the uninstallation is complete. If there is no result, it means the uninstallation is complete.

[root@localhost /]# rpm -qa|grep -i mysql

The above is the relevant knowledge about uninstalling MySQL 8.0 on Linux. Thank you for your learning and support for 123WORDPRESS.COM.