1 problem
Completely uninstall mysql under centos system
2 Operation method
1), view mysql information
rpm -qa | grep -i mysql
mysql57-community-release-el7-10.noarch
mysql-errmsg-8.0.17-3.module_el8.0.0+181+899d6349.x86_64
mysql-8.0.17-3.module_el8.0.0+181+899d6349.x86_64
mysql-server-8.0.17-3.module_el8.0.0+181+899d6349.x86_64
mysql-common-8.0.17-3.module_el8.0.0+181+899d6349.x86_64
2), uninstall mysql
yum remove mysql
yum remove mysql-server
yum -y remove MySQL-*
Then delete the mysql-related folders
find / -name mysql | xargs rm -rf
Then we check the mysql information
rpm -qa | grep -i mysql
[root@iZm5e6dk6exl71zbx327zvZ usr]# rpm -qa | grep -i mysql
mysql57-commun