fastapi_service file

To make your FastAPI app run automatically when you restart your laptop (Linux system), you can use systemd to create a service file.

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✅ Step 1: Prepare Your FastAPI App

Let’s assume:

• Your app is in: /home/youruser/myapp/main.py
• You run it with: uvicorn main:app --host 0.0.0.0 --port 8000
• You’re using a virtual environment at: /home/youruser/myapp/venv/

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✅ Step 2: Create a Systemd Service File

Create a file called:

sudo nano /etc/systemd/system/fastapi-app.service

Paste the following content (edit paths accordingly):

[Unit]
Description=FastAPI app with Uvicorn
After=network.target

[Service]
User=youruser
Group=youruser
WorkingDirectory=/home/youruser/myapp
ExecStart=/home/youruser/myapp/venv/bin/uvicorn main:app --host 0.0.0.0 --port=8000
Restart=always
RestartSec=3

[Install]
WantedBy=multi-user.target

🔁 Replace youruser and paths with your actual username and paths.

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✅ Step 3: Reload systemd and Enable the Service

sudo systemctl daemon-reexec
sudo systemctl daemon-reload
sudo systemctl enable fastapi-app.service

To start it now:

sudo systemctl start fastapi-app.service

To check status:

sudo systemctl status fastapi-app.service

To check logs:

journalctl -u fastapi-app.service -f

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✅ Your FastAPI app will now

• Automatically start on boot
• Restart if it crashes
• Log via journalctl

Let me know if you’re using gunicorn or docker and I’ll adapt it accordingly.

TLDR : Example Fastapi_app.service

[Unit]
Description=FastAPI app with Uvicorn
After=network.target

[Service]
User=minato
Group=minato
WorkingDirectory=/home/minato/Desktop/FastApi-crud
ExecStart=/home/minato/Desktop/FastApi-crud/env/bin/uvicorn main:app --host 0.0.0.0 --port=8000
Restart=always
RestartSec=3

[Install]
WantedBy=multi-user.target