Centos上卸载MySQL8.0

1、查看当前mysql安装状况

rpm -qa | grep mysql
# 或
yum list install | grep mysql

2、查看mysql的服务是否启动

systemctl status mysqld

2.1、如果启动则关闭mysql服务

systemctl stop mysqld.service  # service可加可不加
# 停止MySQL的服务
[root@chenstudy ~]\# systemctl stop mysqld
# 再次查看MySQL的服务状态
[root@chenstudy ~]\# systemctl status mysqld

3、 卸载上述命令查询出的已安装程序

yum remove mysql-community-libs-8.0.30-1.el7.x86_64
rpm -qa | grep mysql
yum remove mysql-community-client-plugins-8.0.30-1.el7.x86_64
rpm -qa | grep mysql
yum remove mysql-community-server-8.0.30-1.el7.x86_64
rpm -qa | grep mysql

​ 图一：移除mysql-community-libs-8.0.30-1.el7.x86_64

​ 图二：查看剩余的MySQL安装包

​ 图三：移除mysql-community-client-plugins

​ 图四：移除mysql-community-common

​ 图五：再次查看MySQL的安装状态

​ 图六：移除 mysql-community-icu-data-files

​ 图七：移除mysql80-community-release-el7-7.noarch

4、删除mysql相关文件

• 查找相关文件

find / -name mysql

• 删除上述命令查找出来的相关文件

rm -rf /usr/lib64/mysql
rm -rf /var/lib/mysql
rm -rf /var/lib/mysql/mysql
rm -rf /etc/selinux/targeted/active/modules/100/mysql

5、删除my.cnf

rm -rf /etc/my.cnf