```bash
sudo systemctl start mysql
sudo systemctl enable mysql
```
### 4.3 配置MySQL安全性
运行以下命令进行安全配置:
```bash
sudo mysql_secure_installation
```
按照提示完成设置,包括设置root密码、删除匿名用户、禁止root远程登录等。
### 4.4 创建JEECMS数据库
登录MySQL并创建数据库和用户:
```sql
CREATE DATABASE jeecms CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
CREATE USER 'jeecmsuser'@'localhost' IDENTIFIED BY 'yourpassword';
GRANT ALL PRIVILEGES ON jeecms.* TO 'jeecmsuser'@'localhost';
FLUSH PRIVILEGES;
```