supervisor gunicorn virtualenv flask

1. Create a Virtual Environment:

2. Run python3 -m venv venv to create a virtual environment named "venv."

3. Activate the Virtual Environment:

4. On Linux/macOS: source venv/bin/activate

5. On Windows: venv\Scripts\activate

6. Install Flask:

7. Execute pip install flask to install Flask within the virtual environment.

8. Install Gunicorn:

9. Run pip install gunicorn to install the Gunicorn WSGI server.

10. Create a Flask App:

11. Develop your Flask application. Ensure you have a file (e.g., app.py) containing the Flask app instance.

12. Test Flask App Locally:

13. Run the Flask app locally using flask run to check if it works as expected.

14. Install Supervisor:

15. Install Supervisor using sudo apt-get install supervisor (for Debian/Ubuntu). For other systems, use the relevant package manager.

16. Configure Supervisor:

17. Create a Supervisor configuration file, e.g., myapp.conf, specifying the Gunicorn command to run your Flask app.

ini [program:myapp] command=/path/to/venv/bin/gunicorn -w 4 -b 0.0.0.0:8000 app:app directory=/path/to/your/app user=your_user

1. Update Supervisor:

2. Update Supervisor to recognize the new configuration: sudo supervisorctl reread and sudo supervisorctl update.

3. Start Supervisor Service:

   • Start the Supervisor service: sudo service supervisor start.

4. Check Supervisor Status:

   • Confirm the status of your Supervisor process: sudo supervisorctl status.

5. Access Flask App via Gunicorn and Supervisor:

   • Visit your Flask app via Gunicorn and Supervisor at the specified address (e.g., http://localhost:8000).

6. Deactivate Virtual Environment:

   • When done, deactivate the virtual environment using deactivate.