ajdindev/cloudflare-rdns-creation

Cloudflare reverse DNS Automation Script

Cloudflare rDNS Record Automation Script

This script is designed to automate the process of creating A records within Cloudflare for a specified IPv4 range. The primary use case is for creating rDNS entries, but it can be adapted for various other DNS needs.

Features

• Generate and create A records for IPs within a given range.
• Dynamically create rDNS format based on provided BASE_IP.
• Dry-run mode available to preview operations without committing any changes.
• Utilizes Cloudflare's API tokens for authentication.

Pre-requisites

1. jq: A lightweight and flexible command-line JSON processor.

   • Installation (Ubuntu/Debian): sudo apt install jq
   • Installation (macOS): brew install jq

2. A Cloudflare API token with permissions to create DNS records for desired domain.

Usage

1. Clone the repository:

   git clone https://github.com/AjdinDev/cloudflare-rdns-creation.git

2. Navigate to the repository directory:

   cd cloudflare-rdns-creation

3. Make the script executable:

   chmod +x script.sh

4. Edit the script:

   • Add your Cloudflare API token and zone ID.
   • Set the BASE_IP variable to the first three octets of your IP range.
   • Adjust the IP range by changing the loop range (default is {0..255} for a /24 subnet).

5. Run the script:

   • Dry run (no changes will be made):

     ./script.sh --dry-run

   • Actual run:

     ./script.sh

Adjusting the IP Range

By default, the script is set to work with a /24 subnet, meaning it will generate and create records for all IPs from x.x.x.0 to x.x.x.255. If you need to work with a different range, adjust the loop in the script. For example, {0..15} will cover IPs from x.x.x.0 to x.x.x.15.

Safety and Security

• Never hard-code API tokens in scripts or code. Instead, consider using environment variables or configuration files to manage secrets.
• Always run the script in dry-run mode first to ensure that the expected operations match your intent.

Contributions

Contributions are welcome! If you found a bug, want to propose a feature, or feel the urge to refactor some code, please feel free to do so.