Cloudflare Public Dynamic IP Update

Updating public dynamic IP address to existing cloudflare DNS record (Only work for updating single DNS Zone)

Requirement

Using curl, jq (Need to install epel-release prior to install jq in CentOS), and dig command.
Check whether jq is installed on your system or not before use this script

Need to customize cloudflare_config file before using this script.

• Auth-Key
  Authorization key for cloudflare API. Able to find it at My Profile page. Substitute [Your_CloudFlare_API_Auth_Key] with your API key.
  Follow this Instruction
• Auth-Email
  Your Cloudflare account login email. Substitute [Your_CloudFlare_Account_Email] with yours.
• Zone-ID
  You can find zone ID of your DNS Zone on the right sidebar of cloudflare DNS overview page, under API tab. Substitute [DNS_Zone_ID_of_Your_Domain] with yours.
• Update-Target
  Meaning list of domain address that you want to update linking ip address via this script. List must be separated by single comma(,). Substitute [List_Of_Domain_Address_You_Want_To_Update] with your list.
  e.g. "google.com,www.google.com"

Tested Environment

If you used this code in other OS and confirm that it works successfully (in all situation), please make an issue with brief test result.
As soon as I check the issue, I will update the list.

Test Condition

• Current IP is same as record's IP, must see the proper message indicating the identity
• Current IP is not same as record's IP, record's IP must be updated and see the proper message indicating the record has been updated
• Has no connection, and see the error message

Tested OS List

• Ubuntu 18.04.2 LTS
• CentOS Linux release 7.6.1810

Contact

If you have any question or want to report an error (or any other suggestion), simply make an issue with description.

If you want DNS record IP update shell script for multiple DNS zones, I may work for that. Just simple post an issue on this github repository.