host my fpl app on aws

[yemoski]

https://www.youtube.com/watch?v=ct1GbTvgVNM

[yemoski]

To migrate your Flask app from Heroku to AWS EC2, follow these steps:

Step 1: Set Up EC2 Instance

1. Log into AWS: Go to the AWS Management Console.

2. Launch an EC2 instance:

   • Choose an Amazon Machine Image (AMI). The most common choice is Ubuntu or Amazon Linux.
   • Choose an instance type (e.g., t2.micro for free-tier eligible).
   • Configure instance details, storage, and security groups:
     • Security Groups: Allow inbound traffic on HTTP (port 80) and SSH (port 22) for remote access.
   • Launch the instance and download the .pem key file.

3. SSH into the EC2 instance:

   • Run the following command in your terminal:

     ssh -i "your-key.pem" ubuntu@your-ec2-public-ip

Step 2: Set Up Your Environment on EC2

1. Install necessary packages: Update and install packages like Python, Git, and Pip:

   sudo apt update
   sudo apt install python3-pip python3-dev nginx git

2. Clone your Flask app:

   git clone https://github.com/your-repository-url.git

3. Install Flask app dependencies: Navigate to your project directory and install the required packages:

   cd your-app-directory
   pip3 install -r requirements.txt

Step 3: Configure a Web Server (Nginx + Gunicorn)

1. Install Gunicorn (WSGI server):

   pip3 install gunicorn

2. Test running your app with Gunicorn:

   gunicorn --bind 0.0.0.0:8000 wsgi:app

   This assumes your app entry point is named app in wsgi.py.

3. Set up Nginx:

   • Edit Nginx config to proxy requests to Gunicorn:

     sudo nano /etc/nginx/sites-available/flask_app

     Add the following configuration:

     server {
      listen 80;
      server_name your-ec2-public-ip;
     
      location / {
          proxy_pass http://127.0.0.1:8000;
          proxy_set_header Host $host;
          proxy_set_header X-Real-IP $remote_addr;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header X-Forwarded-Proto $scheme;
      }
     }

   • Enable this configuration:

     sudo ln -s /etc/nginx/sites-available/flask_app /etc/nginx/sites-enabled
     sudo nginx -t
     sudo systemctl restart nginx

Step 4: Set Up a Process Manager

1. Install Supervisor:

   sudo apt install supervisor

2. Configure Supervisor to manage Gunicorn:

   sudo nano /etc/supervisor/conf.d/flask_app.conf

   Add the following:

   [program:flask_app]
   command=/usr/local/bin/gunicorn --workers 3 --bind unix:/home/ubuntu/flask_app.sock wsgi:app
   directory=/home/ubuntu/your-app-directory
   user=ubuntu
   autostart=true
   autorestart=true
   stderr_logfile=/var/log/flask_app.err.log
   stdout_logfile=/var/log/flask_app.out.log

   • Start the service:

     sudo supervisorctl reread
     sudo supervisorctl update
     sudo supervisorctl start flask_app

Step 5: Update DNS and Domain (Optional)

• If you're using a custom domain, update your DNS records to point to your EC2 instance's public IP.

After these steps, your Flask app should be running on AWS EC2, accessible through the instance's public IP or domain.