EC2 - AWS Flask Deployment Example

Deploying Sample API code 

	#All credits to https://youtu.be/34cqrIp5ANg, Customized and simplified it for my reference
	import json
	from fastapi import FastAPI, HTTPException
	import os
	app = FastAPI()
	BOOKS_FILE = "books.json"
	BOOK_DATABASE = ['The great gatsby','atomic habits','norwegien wood']
	if os.path.exists(BOOKS_FILE):
	with open(BOOKS_FILE,'r') as f:
	BOOKS_DATABASE = json.load(f)
	#GET method to written list of books
	@app.get('/list-books')
	async def list_books():
	return {'books':BOOK_DATABASE}
	@app.get('/book-by-index/{index}')
	async def book_by_index(index: int):
	if (index < 0 or index >= len(BOOK_DATABASE)):
	raise HTTPException(404,f'index {index} is more than 4 books')
	else:
	return {'book':BOOK_DATABASE[index]}
	#This missed backslash was a miss and was debugging sometime
	@app.post('/add-book')
	async def add_book(book: str):
	BOOK_DATABASE.append(book)
	return {'message':f' {book[0]} is added'}

view raw fastapiexample.py hosted with ❤ by GitHub

Creating an EC2 Free t2 instance

Basic Ubuntu

Allow Access

Save Public IP

Launch Instance

Run Updated Packages and the below commands

	#Borrowed / Custmized detailed steps from https://github.com/pixegami/fastapi-tutorial
	Step 1 - Update packages
	sudo apt-get update
	Step 2 - Install pip
	sudo apt install -y python-pip nginx
	sudo apt install python3-pip
	Step 3 - Config file creation
	sudo vim /etc/nginx/sites-enabled/fastapi_nginx
	Step 4 - Contents
	server {
	listen 80;
	server_name 34.221.96.208;
	location / {
	proxy_pass http://127.0.0.1:8000;
	}
	}
	Step 5 - Restart Service
	sudo service nginx restart
	Step 6 - Download file
	wget https://gist.githubusercontent.com/siva2k16/400922b893865051c99fd24d6f3e7b2f/raw/6e5320641ae6e49ebf94a1666dc2914953114012/fastapiexample.py
	Step 7 - Install packages
	pip3 install fastapi
	pip3 install uvicorn
	Step 8 - Run Example code
	python3 -m uvicorn fastapiexample:app
	Step 9 - Allow inbound communication
	One more key step - Enable inbound on port 80 in security groups
	Step 10 - Examples to run
	http://127.0.0.1:8000/docs#
	http://34.221.96.208:80/docs#

view raw commands hosted with ❤ by GitHub

Ref - Simplified code example Link

Allow Access to Port 80. HTTP

Run from browser and access APIs

Keep Exploring!!!