AWS Classroomnotes 19/Jul/2023

AWS App runner

• AWS App runner is a PaaS offering like Elastic Beanstalk
• AWS App runner internally uses ECS container technology by AWS,
• We can specify our build and run settings manually or in configuration file apprunner.yaml
• the latest version of the code is available at Refer Here
• For screenshots refer classroom video
• After succesful deployment access the url
  
• Make changes and wait for deployment to be success
  

Serverless

• In serverless we build functions, which when executed will be charged
  
• AWS offers serverless with AWS Lambda which charges per millisecond
• Lets create a lambda function
  
  
• Lets try writing a lambda function which shows ec2 instance ids in oregon region

import json
import boto3

def lambda_handler(event, context):
    # TODO implement
    ec2 = boto3.client('ec2')
    response = ec2.describe_instances()
    instances = []
    for instance in response['Reservations'][0]['Instances']:
        instances.append(instance['InstanceId'])
    return {
        'statusCode': 200,
        'body': json.dumps(instances)
    }

• the above function will be charged only when called.

Exercise

• Figure out what lightsail is doing