Deploy Flask website using AWS CLI with AWS Lambda, AWS API Gateway and Zappa

Posted on by Sandip Patel

Prerequisites:

  1. Python
  2. pip
  3. virtualenv
  4. awscli

To deploy a Flask website, first create a virtual environment using below commands in cmd terminal…

  1. >mkdir demo
  2. >cd demo
  3. demo> virtualenv <name_virtualenv>
  4. demo> %HOME_Path%\ <name_virtualenv> \Scripts\activate

To check environment is now active like below: (<name_virtualenv>) C:\>

Now, Install all necessary dependencies in a virtual environment

  1. (<name_virtualenv>) C:\> pip install flask
  2. (<name_virtualenv>) C:\> pip install Flask zappa
  3. (<name_virtualenv>) C:\> pip freeze
  4. (<name_virtualenv>) C:\> pip freeze > requirements.txt

Download the following zip file extract it and copy the app.py and templates folder into demo folder

flask.zip

Now Our flask website is ready to deploy

zappa init

When you run this command it asks you to enter certain details from that create zappa_settings.json file please leave all the details as default

Now, run the following command to deploy the website

zappa deploy dev

This command gives you one link as an output which you need to enter in browser to see the output

OUTPUT:

After updating the website run following command to update the environment

zappa update dev