GitHub Actions makes it easy to automate all your software workflows. You can build, test, and deploy your code right from GitHub. In this post we will explore how you can use GitHub Actions to automate serverless application deployment on AWS. You can also use AWS’s own CI/CD services to achieve the same. But here we are going to keep our discussion limited to GitHub Actions.

How to Use GitHub Actions?

Creating a GitHub action is simple. Go to your GitHub repository that you want to automate and click on “Actions”

You will be taken to Actions page where you can create a new Blank workflow or select existing actions from the marketplace. The actions from marketplace are reusable actions that you can use in your workflow. We are going to create a blank action and we will also use some actions from marketplace.

Let’s rename the YAML file to workflow.yml. You can name anything you like. We are going to create a Lambda function with API gateway in Serverless Application Model (SAM) template and deploy it using GitHub Actions. Below is our SAM template.

YAML

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: 
  GitHub Actions demonstration App
Resources:
  ApiGatewayApi:
    Type: AWS::Serverless::Api
    Properties:
      StageName: Prod
    Auth:
     UsagePlan:
      CreateUsagePlan: PER_API
      Description: Usage plan for this API
      Quota:
       Limit: 500
       Period: MONTH
      Throttle:
       BurstLimit: 100
       RateLimit: 50
  LamdbaFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: ./    
      Handler: lambda.handler
      Runtime: python3.8
      Events:
        getCounter:
          Type: Api
          Properties:
            Path: /hello
            Method: get
            RestApiId: !Ref ApiGatewayApi

lambda.py

#aws #automation #deployment automation #github actions #how-to guides