[Unit] Description=PMS Device Server - Test Environment After=network.target [Service] Type=simple User=root WorkingDirectory=/data/pms_dev/device-server ExecStart=/data/pms_dev/device-server/device-server EnvironmentFile=/data/pms_dev/device-server/.env Restart=always RestartSec=5 # 提高文件描述符上限:默认软限制 1024 ⇒ 约 1000 台柜子就 accept() 失败 LimitNOFILE=65535 [Install] WantedBy=multi-user.target