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Fix issue where the application fails to start due to port conflicts

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Resolve "address already in use" error by resetting systemd, killing all Python processes, and ensuring the port is free before restarting the ML backend service.

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marco370 2025-11-25 17:35:58 +00:00
parent 955a2ee125
commit 42541724cf
1 changed files with 82 additions and 0 deletions
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attached_assets/Pasted-netstat-tlnp-grep-8000-tcp-0-0-0-0-0-0-8000-0-0-0-0-LISTEN-1764092119907_1764092119907.txt Normal file
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netstat -tlnp | grep 8000
tcp 0 0 0.0.0.0:8000 0.0.0.0:* LISTEN 106309/python3.11
(venv) [root@ids python_ml]# lsof -i :8000
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
python3.1 106309 ids 7u IPv4 805799 0t0 TCP *:irdmi (LISTEN)
(venv) [root@ids python_ml]# kill -9 106309
(venv) [root@ids python_ml]# lsof -i :8000
(venv) [root@ids python_ml]# pkill -9 -f "python.*8000"
(venv) [root@ids python_ml]# pkill -9 -f "python.*main.py"
(venv) [root@ids python_ml]# sudo systemctl restart ids-ml-backend
Job for ids-ml-backend.service failed because the control process exited with error code.
See "systemctl status ids-ml-backend.service" and "journalctl -xeu ids-ml-backend.service" for details.
(venv) [root@ids python_ml]# sudo systemctl status ids-ml-backend
× ids-ml-backend.service - IDS ML Backend (FastAPI)
Loaded: loaded (/etc/systemd/system/ids-ml-backend.service; enabled; preset: disabled)
Active: failed (Result: exit-code) since Tue 2025-11-25 18:31:08 CET; 3min 37s ago
Duration: 2.490s
Process: 108530 ExecStart=/opt/ids/python_ml/venv/bin/python3 main.py (code=exited, status=1/FAILURE)
Main PID: 108530 (code=exited, status=1/FAILURE)
CPU: 3.987s
Nov 25 18:31:08 ids.alfacom.it systemd[1]: ids-ml-backend.service: Scheduled restart job, restart counter is at 5.
Nov 25 18:31:08 ids.alfacom.it systemd[1]: Stopped IDS ML Backend (FastAPI).
Nov 25 18:31:08 ids.alfacom.it systemd[1]: ids-ml-backend.service: Consumed 3.987s CPU time.
Nov 25 18:31:08 ids.alfacom.it systemd[1]: ids-ml-backend.service: Start request repeated too quickly.
Nov 25 18:31:08 ids.alfacom.it systemd[1]: ids-ml-backend.service: Failed with result 'exit-code'.
Nov 25 18:31:08 ids.alfacom.it systemd[1]: Failed to start IDS ML Backend (FastAPI).
Nov 25 18:34:35 ids.alfacom.it systemd[1]: ids-ml-backend.service: Start request repeated too quickly.
Nov 25 18:34:35 ids.alfacom.it systemd[1]: ids-ml-backend.service: Failed with result 'exit-code'.
Nov 25 18:34:35 ids.alfacom.it systemd[1]: Failed to start IDS ML Backend (FastAPI).
(venv) [root@ids python_ml]# tail -n 50 /var/log/ids/ml_backend.log
[HYBRID] Selected features: 18/25
[HYBRID] Mode: Hybrid (IF + Ensemble)
[ML] ✓ Hybrid detector models loaded and ready
🚀 Starting IDS API on http://0.0.0.0:8000
📚 Docs available at http://0.0.0.0:8000/docs
INFO: Started server process [108413]
INFO: Waiting for application startup.
INFO: Application startup complete.
ERROR: [Errno 98] error while attempting to bind on address ('0.0.0.0', 8000): address already in use
INFO: Waiting for application shutdown.
INFO: Application shutdown complete.
[WARNING] Extended Isolation Forest not available, using standard IF
[ML] Using Hybrid ML Detector (Extended Isolation Forest + Feature Selection)
[HYBRID] Ensemble classifier loaded
[HYBRID] Models loaded (version: latest)
[HYBRID] Selected features: 18/25
[HYBRID] Mode: Hybrid (IF + Ensemble)
[ML] ✓ Hybrid detector models loaded and ready
🚀 Starting IDS API on http://0.0.0.0:8000
📚 Docs available at http://0.0.0.0:8000/docs
INFO: Started server process [108452]
INFO: Waiting for application startup.
INFO: Application startup complete.
ERROR: [Errno 98] error while attempting to bind on address ('0.0.0.0', 8000): address already in use
INFO: Waiting for application shutdown.
INFO: Application shutdown complete.
[WARNING] Extended Isolation Forest not available, using standard IF
[ML] Using Hybrid ML Detector (Extended Isolation Forest + Feature Selection)
[HYBRID] Ensemble classifier loaded
[HYBRID] Models loaded (version: latest)
[HYBRID] Selected features: 18/25
[HYBRID] Mode: Hybrid (IF + Ensemble)
[ML] ✓ Hybrid detector models loaded and ready
🚀 Starting IDS API on http://0.0.0.0:8000
📚 Docs available at http://0.0.0.0:8000/docs
INFO: Started server process [108530]
INFO: Waiting for application startup.
INFO: Application startup complete.
ERROR: [Errno 98] error while attempting to bind on address ('0.0.0.0', 8000): address already in use
INFO: Waiting for application shutdown.
INFO: Application shutdown complete.
[WARNING] Extended Isolation Forest not available, using standard IF
[ML] Using Hybrid ML Detector (Extended Isolation Forest + Feature Selection)
[HYBRID] Ensemble classifier loaded
[HYBRID] Models loaded (version: latest)
[HYBRID] Selected features: 18/25
[HYBRID] Mode: Hybrid (IF + Ensemble)
[ML] ✓ Hybrid detector models loaded and ready
🚀 Starting IDS API on http://0.0.0.0:8000
📚 Docs available at http://0.0.0.0:8000/docs
(venv) [root@ids python_ml]#