snordquist/dyndns_route53_lambda

DynDNS with AWS Route53 and Lambda

DynDNS with AWS Route53 and Lambda

Sample

Hostname	A Record
dyndns.mydomain.com	[api].execute-api.[region].amazonaws.com.
home.mydomain.com	[dynamic ip]
subdomain1.home.mydomain.com	[dynamic ip]
subdomain2.home.mydomain.com	[dynamic ip]

Prerequisites

• Configure AWS credentials: https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-files.html
• Configure a hosted zone for your domain (e.g. mydomain.com)
• Create certificate for your domain including subdomains

DynDNS Lambda

• Create Lambda
• Provide environment variables:
  • HOSTED_ZONE_ID
• Add Permissions for Lambda execution role
  • route53:ChangeResourceRecordSets
  • route53:ListResourceRecordSets
• The timeout for this lambda might be increased to >10 seconds

Authorization Lambda

• Create Lambda
• Provide environment variables:
  • BASIC_AUTH_USERNAME
  • BASIC_AUTH_PASSWORD

API Gateway

• create API gateway with lambda proxy
• configure authenticator to method request

Install

npm install

Deploy

Execute deployment

export BASIC_AUTH_USERNAME=AAAAAAA
export BASIC_AUTH_PASSWORD=BBBBBBB
export CONFIG_DOMAIN_CERTIFICATE_ARN=arn:aws:acm:[region]:[account]:certificate/[certificate id]
export CONFIG_DOMAIN_NAME=dyndns.mydomain.com
export HOSTED_ZONE_ID=XXXXXXXXXXXXX
export HOSTED_ZONE_NAME=YYYYYY
npm run deploy

Test

curl -u user:pass https://dyndns.mydomain.com/?hostname=home.mydomain.com