This script automatically updates the A records for a list of FQDNs in GoDaddy with the current public IP address of the machine running the script. It checks if the public IP has changed; if so, it uses the GoDaddy API to update the A records for the specified subdomains. It also sends an email notification using an IFTTT webhook. The script is designed to be used in situations where a home server or device has a dynamic public IP that may change periodically, and the DNS records need to be updated accordingly to maintain accessibility.
Grant execute permissions with sudo chmod +x run_ddns.sh.
Copy the config.sh.example into a new config.sh file and configure the following:
- FQDNS: The list of DNS records to be monitored and updated to the servers public IP
- GODADDY_SSO: Your GoDaddy "key:secret" from https://developer.godaddy.com/keys
- IFTTT_KEY: Your IFTTT webhook key from https://ifttt.com/maker_webhooks
- IFTTT_EVENT: Your IFTTT event name, as specified when creating the webhook
Note: For more information check the IFTTT webhooks documentation. The IFTTT webhooks API endpoint looks like this
https://maker.ifttt.com/trigger/{IFTTT_EVENT}/json/with/key/{IFTTT_KEY}
- Run on-demand with
./run_ddns.sh - Check the logs with
tail -f log.csv - Schedule as a cronjob by adding a crontab command with
crontab -e
Example crontab command that runs every 5 minutes:
# m h dom mon dow command
*/5 * * * * cd /path/to/ddns && ./run_ddns.sh