namecheap-ddns-updater

Script to update a host's IP address when using Namecheap's DDNS

The script determines your current IP address by querying https://ifconfig.me/ip, compares it to the IP address currently set for the domain using dig, and then updates the IP address if necessary.

Usage

Set the required environment variables and then execute the script

export DDNS_HOST=example.com  # the base namecheap domain
export DDNS_DOMAIN=subdomain  # the subdomain set up with DDNS to update
export DDNS_PASSWORD=examplepassword  # the DDNS password from the namecheap console
./update-ddns.sh

The docker image requires setting up the same three environment variables

docker run -e DDNS_HOST=example.com -e DDNS_DOMAIN=subdomain -e DDNS_PASSWORD=examplepassword --rm ghcr.io/twinklehawk/namecheap-ddns-updater:1.0.0