下载 MySQL 8.0 官方仓库包

wget https://dev.mysql.com/get/mysql80-community-release-el7-7.noarch.rpm

或者使用 curl

curl -O https://dev.mysql.com/get/mysql80-community-release-el7-7.noarch.rpm

安装仓库包

sudo rpm -ivh mysql80-community-release-el7-7.noarch.rpm

导入所有可能的 MySQL GPG 密钥

sudo rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022
sudo rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql
sudo rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2023

安装 MySQL 服务器

sudo yum install mysql-community-server

安装后:

1. 启动 MySQL/MariaDB

sudo systemctl start mysqld # MySQL

或

sudo systemctl start mariadb # MariaDB

2. 设置开机自启

sudo systemctl enable mysqld

或

sudo systemctl enable mariadb

3. 获取临时密码（仅 MySQL）

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

4. 安全配置

sudo mysql_secure_installation

用临时密码登录后修改密码:

1. 使用临时密码登录 MySQL

mysql -u root -p

输入临时密码

2. 设置新密码（MySQL 8.0）

ALTER USER 'root'@'localhost' IDENTIFIED BY 'YourNewPassword123!';

或者 MySQL 5.7

SET PASSWORD FOR 'root'@'localhost' = PASSWORD('YourNewPassword123!');

3. 刷新权限

FLUSH PRIVILEGES;