1. 停止并禁用服务
sudo systemctl stop app
sudo systemctl disable app
sudo rm /etc/systemd/system/app.service
sudo systemctl daemon-reload
2. 删除程序文件
sudo rm -rf /opt/app/app.jar
sudo rm -f /opt/app/app.log
sudo rm -rf /opt/app/backup/app_*.jar
3. 清理 Nginx 配置
sudo rm /etc/nginx/sites-enabled/api.yourdomain.com
sudo rm /etc/nginx/sites-available/api.yourdomain.com
4. 移除防火墙规则
sudo ufw delete allow 8080/tcp
sudo ufw reload
5. 清理进程残留
pgrep -f app | xargs sudo kill -9
sudo rm -f /tmp/app_*.tmp
6. 删除日志文件
sudo rm /var/log/nginx/api.access.log
sudo rm /var/log/nginx/api.error.log
journalctl --vacuum-time=1d