go-route53-dyn-dns

A simple command to update AWS Route53 with a device's public IP address.

Uses

• On boot of an EC2 instance, update the A record of a (sub)domain to point to the new IP address.
• Your own dynamic DNS.

Requirements

• Linux. Windows, OS X, and BSD are untested.
• An internet connection and a public IP address.
• An AWS account.
• An existing hosted zone in AWS Route53.

Configuration

Create a configuration file at /etc/go-route53-dyn-dns-conf.json with contents:

{
    "AWS_ACCESS_KEY": "YOUR_ACCESS_KEY",
    "AWS_SECRET_ACCESS_KEY": "YOUR_SECRET_ACCESS_KEY",
    "HOSTED_ZONE_ID": "YOUR_HOSTED_ZONE_ID",
    "SUBDOMAIN": "mysubdomain.mydomain.com"
}

Running

Once your configuration file is ready, just run go-route53-dyn-dns. If successful, the following will be printed:

Successfully mapped mysubdomain.mydomain.com to IP 55.44.33.22.

Running on Boot - Ubuntu 14.04 LTS

To run the script on boot once the network is up, create the file /etc/init/go-route53-dyn-dns.conf and paste these contents into it:

description "go-route53-dyn-dns"

start on net-device-up IFACE=eth0

script
    /usr/local/bin/go-route53-dyn-dns
end script

Remember to replace the location of go-route53-dyn-dns.

Building

To build, clone the codebase and run dep ensure, then go build.