この紹介文は現在英語版のみです。
A simple and effective BASH script for automatic Cloudflare DNS record updates
Overview
Cloudflare DDNS Updater is a lightweight BASH script designed to automatically update your Cloudflare DNS records when your home or server IP address changes. This solution enables you to access your self-hosted services through a consistent domain name, even with a dynamic IP address from your ISP.
Key Features
- 🔄 Automatic IP Detection: Detects changes in your public IP address
- 🔧 Easy Configuration: Simple setup with minimal requirements
- 🔒 API Token Support: Uses secure Cloudflare API tokens
- 🌐 IPv4 & IPv6 Support: Works with both address types
- 📝 Detailed Logging: Optional logging for troubleshooting
- ⏱️ Cron-Friendly: Easily scheduled through cron jobs
- 📨 Email Notifications: Optional alerts for IP changes
- 🛡️ Multiple Domain Support: Update records across multiple zones
How It Works
The script performs these basic steps:
- Detects your current public IP address
- Compares it with the existing DNS record in Cloudflare
- Updates the record only when a change is detected
- Provides optional logging and notifications
Quick Start
Prerequisites
- A Cloudflare account with at least one domain
- A server or device running a Linux distribution
- Basic BASH and command-line knowledge
Setup Instructions
-
Download the script:
curl -o cloudflare-ddns-updater.sh https://raw.githubusercontent.com/K0p1-Git/cloudflare-ddns-updater/master/cloudflare-ddns-updater.sh chmod +x cloudflare-ddns-updater.sh -
Configure your settings: Edit the script and update the configuration variables:
- Cloudflare API token or Global API key
- Your email address
- Zone ID (domain)
- DNS record name
- Record type (A for IPv4, AAAA for IPv6)
-
Run the script manually:
./cloudflare-ddns-updater.sh -
Set up automatic updates: Add a cron job to run the script periodically (e.g., every 5 minutes):
*/5 * * * * /path/to/cloudflare-ddns-updater.sh
Advanced Configuration
Email Notifications
Configure email settings to receive notifications when your IP changes:
# Email Settings
EMAIL_TO="[email protected]"
SUBJECT="Cloudflare DDNS Updater - IP Changed"IPv6 Support
The script can be configured to update AAAA records for IPv6 addresses:
# Set to either A or AAAA
TYPE="AAAA"Proxied Records
Control whether Cloudflare should proxy your traffic:
# Set to either true or false
PROXIED="true"Use Cases
- Home Lab Access: Access your home lab services from anywhere
- Self-hosted Websites: Keep your website accessible with a changing IP
- Remote Access: Maintain remote access to your devices
- Game Servers: Host multiplayer game servers with a consistent domain
- IoT Devices: Connect to your smart home devices remotely
Troubleshooting
- Verify API Permissions: Ensure your API token has the correct zone permissions
- Check Logs: Enable logging to identify potential issues
- IP Detection: If IP detection fails, try alternative IP services in the script
- DNS Propagation: Allow time for DNS changes to propagate globally
Requirements
- BASH shell
- curl or wget for HTTP requests
- Basic Linux command-line knowledge
- Cloudflare account with domain
License
This project is licensed under the MIT License.
A reliable solution for maintaining access to your services with a dynamic IP address.
