使用 Nginx 反向代理（推荐）

安装 nginx（如果还没装）

sudo yum install -y nginx

新建配置文件

sudo vi /etc/nginx/conf.d/blog.conf

填入以下内容：

server {
    listen 80;
    server_name yourdomain.com;

    location / {
        proxy_pass http://127.0.0.1:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_cache_bypass $http_upgrade;
    }
}

启动 Nginx 并设置开机自启：

sudo systemctl start nginx
sudo systemctl enable nginx