1. 更新Linux yum

yum update

2. 安装wget工具

yum install wget

3. 用wget下载MySQL Yum Repository并执行安装

wget https://dev.mysql.com/get/mysql80-community-release-el7-5.noarch.rpm

rpm -ivh mysql80-community-release-el7-5.noarch.rpm

4.在线安装MySQL8

yum install -y mysql-server

5.然后去启动mysql服务

systemctl start mysqld

6.查看临时密码登陆mysql，然后修改密码

grep 'temporary password' /var/log/mysqld.log

红色框框内的为临时密码

6.1登陆数据库

mysql -uroot -p临时密码

6.2修改密码

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '这里输入密码';

密码格式正确会显示ok,错误会提示报错

7.开启远程登录

use mysql ;

update user set host = '%' where user = 'root';

FLUSH PRIVILEGES;