template.yml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: AWS Lambda function for updating Route53 record when public ip of EC2 instance.

Resources:
  UpdateRoute53RecordToEc2PublicIp:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: UpdateRoute53RecordToEc2PublicIp-Python3
      MemorySize: 128
      Handler: lambda_function.lambda_handler
      Timeout: 10
      Policies:
      - Statement:
        - Action:
          - ec2:DescribeInstances
          - ec2:DescribeTags
          - route53:ListHostedZones
          - route53:ChangeResourceRecordSets
          Resource: '*'
          Effect: Allow
      CodeUri:
        Bucket: <%REPO_BUCKET%>
        Key: 76504247-098c-413a-abff-aadd8a6de03f
      Runtime: python3.6
      Events:
        EC2StateChangeEvent:
          Type: CloudWatchEvent
          Properties:
            Pattern:
              source:
              - aws.ec2
              detail:
                state:
                - running
      Description: AWS Lambda function for updating Route53 record when public ip of EC2 instance.