How to Auto Start a Python Flask App After Reboot on Linux (systemd Tutorial)
In this tutorial, you'll learn how to automatically start your Python application whenever your Linux machine boots up.
Instead of manually running:
python app.py
or
python app.py 3000
every time your server, VPS, or computer restarts, we'll use systemd to create a service that starts your application automatically.
What you'll learn:
Create a systemd service for Python applications
Configure a Flask app to run automatically after reboot
Use virtual environments with systemd
Enable and disable startup services
Restart services after code changes
View logs and troubleshoot errors
Run Python applications like a production service
This method works for:
Flask
FastAPI
Django
AI Agents
Automation Scripts
Local APIs
Background Python Services
Commands covered:
systemctl enable
systemctl start
systemctl restart
systemctl stop
journalctl
daemon-reload
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