A Lambda that creates DNS record on EC2 startup and shutdown.
Having your IP for you EC2 instance change every time your stop and restart it can be annoying. And adding an Elastic IP can end up costing a lot of money if you have multiple instances you want a fixed access to.
This simple lambda create / delete automatically a record in Route53 for tagged instances so you can access your instance with a domain name.
Example:
You have the domain example.com, and you want your EC2 to points to my-ec2.example.com.
You tag your instance with the tag dns-name and the value my-ec2, you start your instance and voila !
Your instance is now accessible from my-ec2.example.com.
In your AWS account:
- A Route53 Hosted Zone
- A S3 bucket to store serverless deployment package
On your computer:
- NodeJS & Python 3.8 installed
- Serverless & Pipenv installed
You must fill the config/env_variables.sh file before deploying.
It contains the following variables:
DEPLOYMENT_BUCKET: Name of the S3 bucket where the serverless artifact will be deployed.DOMAIN_NAME: Name of the DNS suffix that will be used (Can be a subdomain of your hosted zone).HOSTED_ZONE_ID: ID of the hosted zone where the records will be stored.
- Complete the
config/env_variables.shfile (see documentation above) - Load the variables in your environment:
source config/env_variables.sh - Install the serverless plugins:
npm install - Deploy the project:
serverless deploy