• Prerequisites: #prerequisites
• Installation: #installation
• Setting Up FastAPI Application: #setting-up-fastapi-application
• Running FastAPI with Gunicorn: #running-fastapi-with-gunicorn
• Managing with PM2: #managing-with-pm2
• Configuring Nginx as a Reverse Proxy: #configuring-nginx-as-a-reverse-proxy
• Testing the Deployment: #testing-the-deployment
• Additional Notes: #additional-notes

• An Ubuntu server with SSH access
• Python 3.6 or newer installed
• A non-root user with sudo privileges

1. Update Package Lists:

   sudo apt update

2. Install Python Dependencies:

   sudo apt install python3-pip python3-venv nginx

3. Create a Virtual Environment (Recommended):

   python3 -m venv venv
   source venv/bin/activate

4. Install FastAPI, Uvicorn, and Gunicorn:

   pip install fastapi uvicorn[standard] gunicorn

5. Install PM2 (Process Manager):

   sudo npm install -g pm2

1. Create a Project Directory:

   mkdir my_fastapi_app
   cd my_fastapi_app

2. Create a Main File (main.py):

   from fastapi import FastAPI
   
   app = FastAPI()
   
   @app.get("/")
   def root():
       return {"message": "Hello World!"}

1. Start the Application:

   gunicorn -w 4 -k uvicorn.workers.UvicornWorker main:app

1. Start with PM2:

   pm2 start "gunicorn -w 4 -k uvicorn.workers.UvicornWorker main:app" --name my_fastapi_app

2. Manage PM2 Processes:

   • List processes: pm2 list
   • Stop a process: pm2 stop my_fastapi_app
   • Restart a process: pm2 restart my_fastapi_app

1. Create Nginx Configuration File:

   sudo nano /etc/nginx/sites-available/my_fastapi_app.conf

2. Paste the Following Configuration:

   server {
       listen 80;
       server_name your_domain_or_IP;
   
       location / {
           proxy_pass http://localhost:8000;
           proxy_http_version 1.1;
           proxy_set_header Upgrade $http_upgrade;
           proxy_set_header Connection 'upgrade';
           proxy_set_header Host $host;
           proxy_cache_bypass $http_upgrade;
       }
   }

3. Enable the Configuration:

   sudo ln -s /etc/nginx/sites-available/my_fastapi_app.conf /etc/nginx/sites-enabled/

4. Test Nginx Configuration:

   sudo nginx -t

5. Restart Nginx:

   sudo service nginx restart

1. Access your server's IP address or domain name in a web browser. You should see the "Hello World!" message from your FastAPI app.

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