mysql8 CentOS7 简要安装说明

rpm -qa |grep mariadb |xargs yum remove -y
比较简单的卸载办法. 

yum localinstall *.rpm

#初始化
mysqld --initialize
#设置服务开机启动
systemctl enable mysqld && systemctl restart mysqld

# 获取随机密码
cat /var/log/mysqld.log |grep password

然后 
mysql -uroot -p
#输入密码 进行登录
#修改原有密码:
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root';
#创建网络可以登录的用户和密码:
create user 'root'@'%' identified with mysql_native_password by 'root';
grant all privileges on *.* to 'root'@'%' with grant option;
flush privileges;