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linux安装muysql数据库

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1.安装 MySQL 5.7 官方源
sudo rpm -Uvh https://repo.mysql.com/mysql57-community-release-el7-11.noarch.rpm
2.安装 MySQL 5.7
sudo yum install -y mysql-community-server
兜底:
sudo yum install -y mysql-community-server --nogpgcheck 跳过签名验证
3.启动
sudo systemctl start mysqld
sudo systemctl enable mysqld
4.查初始密码(5.7 也有)
grep 'temporary password' /var/log/mysqld.log
5.登录
mysql -uroot -p
输入密码
5.修改密码(5.7)
SET PASSWORD = PASSWORD('NewPass123!');
6.创建或修改业务用户,允许远程访问
CREATE USER 'app_user'@'%' IDENTIFIED BY 'App@123456';
GRANT ALL PRIVILEGES ON app_db.* TO 'app_user'@'%';
FLUSH PRIVILEGES;

在服务器安全规则里 放行3306端口