1.下载地址: https://downloads.mysql.com/archives/community/

2.上传安装包到系统目录,并解压

 tar -xvf mysql-8.0.34-1.el7.x86_64.rpm-bundle.tar

3.检查系统中是否存在mariadb的rpm包

rpm -qa|grep mariadb存在则删除
rpm -e xxx

4.解压完后执行如下命令安装

sudo rpm -ivh *.rpm --force --nodeps

5.初始化MySQL数据库

mysqld --initialize --user=mysql

6.启动数据库

systemctl start mysqld

7.查看mysql初始密码

cat /var/log/mysqld.log | grep password

8.使用初始密码登录mysql

mysql -uroot -p

9.修改root的密码：

ALTER USER 'root'@'localhost' IDENTIFIED BY 'Cd@123f!';

10.设置开机启动

systemctl enable mysqld重启mysql
systemctl restart mysqld

11.远程设置：

#远程设置
mysql> use mysql;
mysql> update user set host='%' where user='root';
#授权用户名的权限，赋予任何主机访问数据的权限
#本人没有执行这步
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'WITH GRANT OPTION;
mysql> FLUSH PRIVILEGES;