/asg-lb-dnsmanager

Primary LanguagePython

Infrastructure and lambda function to allow an autoscaling group to be load balanced via a single DNS entrypoint.

Infrastructure Image

Prerequisites

  • Python 2.7
  • Python Pip
  • AWS Credentials
  • Route53 Domain

Setup

Depedencies

  1. pip install -r requirements.txt
  2. aws configure - Follow instructions

Lambda Setup

Adjust Settings

Update variables at the top of lambdaDNSManagerFunction/autoscalingDNSManager.py to match your environment

Upload Code to S3

cd lambdaDNSManagerFunction ./upload_code.sh v1

Create Infrastructure

aws cloudformation create-stack --stack-name lamba-dns-manager-stack --template-body file://infrastructure.yaml --capabilities CAPABILITY_IAM --region us-east-1

AutoScalingGroup Setup

aws cloudformation create-stack --stack-name asg-nginx-lb --template-body file://infrastructure.yaml --capabilities CAPABILITY_IAM --region us-east-1

Subscribe Lambda Function to SNS Topic

  1. Browse to AWS console
  2. Open settings for Lambda Function
  3. Open Triggers Tab
  4. Subscribe to the related nginx SNS topic

TODO

  • Automatic subscribtion to SNS topic on stack launch