Completely delete MySQL in Linux system

This is what I installed before mysql5.7, Then I want to change it to mysql8.0 There is this one , Almost follow the operation. It should be able to delete it completely .

One 、 You have to check whether you have installed mysql( my linux yes centos7 Of )

rpm -qa | grep -i mysql

  Two 、 close mysql Related services

1、 First check your mysql Whether the service is running ( my mysqld It's because I use rpm Command installed )

systemctl status mysqld

 2、 close mysql service

systemctl stop mysqld

 3、 You can confirm again whether to shut down the service

systemctl status mysqld

  3、 ... and 、 Start unloading mysql

1、 Find out mysql Corresponding directory

find / -name mysql

2、 Delete corresponding mysql Catalog

Delete according to the command you found above

One small point ： After uninstalling /etc/my.cnf Does not delete , Need to delete manually

rm -rf /etc/my.cnf

Four 、 Uninstall and delete MySQL Installed component services

rpm -qa|grep -i mysql

Delete what you found mysql Component service

5、 ... and 、 After uninstallation, check whether the uninstallation is successful

	
rpm -qa | grep -i mysql  perhaps 
systemctl start mysql

If nothing, congratulations on uninstalling .