[All-in-One]Deploy Python Flask App to AWS EC2

0. Build the python flask app locally

Create an Generative-AI chatbot using Python and Flask: A step by step guide

1. Create a new EC2 instance

A Step-by-Step Guide to Creating an Amazon EC2 Instance

2. Connect EC2 with SSH automatically

First, connect EC2 with SSH:

How to build an AWS EC2 and connect with SSH

Then, automagical the connect process:

How to automatically login AWS EC2 via SSH on Mac

3. Upload python files to EC2

Open the Mac terminal, and paste the following code to upload local python files exclude the venvfolder. (NOTE: when upload local file, don’t login the AWS EC2 by SSH. otherwise it will error.)

rsync -av \
  --exclude='.git/' \
  --exclude='.DS_Store' \
  --exclude='venv_winjob' \
  --exclude='__pycache__' \
  --exclude='.gitattributes' \
  --exclude='.gitignore' \
  -e "ssh -i /Users/henrywu/MyDrive/98_Products/config/AWS_EC2_key_pair_winjob.pem" \
  /Users/henrywu/MyDrive/99_Coding/01-Github/winjob/ \
  ec2-user@ec2-54-185-22-17.us-west-2.compute.amazonaws.com:/home/ec2-user/winjob/

How to deploy a Python app to AWS EC2 via SSH

4. Set up a virtual environment of EC2

After upload the python file to EC2, we can set up virtual environment by requirements.txt.

python3 -m venv ~/winjob/venv_winjob
source ~/winjob/venv_winjob/bin/activate

pip install -r ~/winjob/requirements.txt

5. Set up a secrete manager of EC2 (optional)

Since my python flask app needs to use Openai API, and it is unsafe to save the key in the server, the best way is to use Secrets Manager of AWS.

How to store a key of AWS EC2 in Secrets Manager instead of ‘.env’

After add the IAM role to the instance, the app can call the key safely.

6. Set up nginx to launch the web

Now we can set up Nginx to serve the Flask app on the AWS EC2, so that everyone can visit it by IP address.

How to set up Nginx and Gunicorn to make the Python Flask app on AWS EC2 accessible web pages

7. Set up gunicorn to make the web accessible 7x24

How to set the Python flask app on AWS EC2 is always available?

8. Set up SSL and domain

How to add SSL to AWS EC2 instance so that HTTPS

How to set up SSL so that the website can be accessed by Https

9. Update App

How to update code of Python Flask App to AWS EC2 from local