home-dns

Use Route53 for dynamic DNS.

Reads record name and zone from a YAML config and upserts on schedule.

Usage

Build

go get
go build

Config

The config file should have a source endpoint and each record to be updated:

source: "https://api.ipify.org?format=text"

records:
- cron: "@hourly"
  name: home.example.com.
  ttl: 300
  zone: Z1ABCDEF123456
- cron: "@daily"
  name: office.example.com.
  ttl: 86400
  zone: Z1ABCDEF123456

Run

Execute with the config file:

AWS_PROFILE="home-root" ./home-dns config.yml

Disclaimer

I do not know Go very well at all, so this code may be quite bad.

Features

multiple zones and records
update on cron schedule

Roadmap

cache the external address (on a schedule of its own?)
interface selection for external check

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