Bash script to update IPv4 and IPv6 records in Cloudflare. Update with WAN or LAN IP.

Based on this project: DDNS-Cloudflare-Bash.

Result

Settings

domains: - name: jmrp.dev ip_type: external ipv4: true ipv6: true proxied: true ttl: auto - name: git.jmrp.dev ip_type: external ipv4: true ipv6: true proxied: true ttl: auto - name: jenkins.jmrp.dev ip_type: external ipv4: true ipv6: true proxied: true ttl: auto settings: cloudflare: - zone_id: ######### - zone_api_token: ######## misc: - create_if_no_exist: false notifications: telegram: enabled: false bot_token: token chat_id: id

• Bash Script for most Linux, Unix distributions and MacOS.
• Choose any source IP address to update external or internal (WAN/LAN) for ech domain.
• For multiply lan interfaces like Wifi, Docker Networks and Bridges the script will automatically detects the primary Interface by priority.
• Cloudflare's options proxy and TTL configurable via the config file for each domain.
• Optional Telegram Notifications

• curl
• Cloudflare api-token with ZONE-DNS-EDIT Permissions
• DNS Record must be pre created in web interface (WIP: Create record if no exist)

To create a CloudFlare API token for your DNS zone go to cloudflare-api-token-url and follow these steps:

1. Click Create Token
2. Select Create Custom Token
3. Provide the token a name, for example, example.com-dns-zone-readonly
4. Grant the token the following permissions:
   • Zone - DNS - Edit
5. Set the zone resources to:
   • Include - Specific Zone - example.com
6. Complete the wizard and use the generated token at the CLOUDFLARE_API_TOKEN variable for the container

You can place the script at any location manually.

MacOS: Don't use the /usr/local/bin/ for the script location. Create a separate folder under your user path /Users/${USER}

The automatic install examples below will place the script at /usr/local/bin/

wget https://raw.githubusercontent.com/jmrplens/DyDNS_Cloudflare_IPv4-6/main/update-cloudflare-records.sh
sudo chmod +x update-cloudflare-records.sh
sudo mv update-cloudflare-records.sh /usr/local/bin/update-cloudflare-records

You can use default config file update-cloudflare-records.yaml or pass your own config file as parameter to script.

wget https://raw.githubusercontent.com/jmrplens/DyDNS_Cloudflare_IPv4-6/main/update-cloudflare-records.yaml

Place the config file in the directory as the update-cloudflare-dns for above example at /usr/local/bin/

sudo mv update-cloudflare-records.yaml /usr/local/bin/update-cloudflare-records.yaml

domains:
  - name: example.com
    ip_type: external
    ipv4: true
    ipv6: true
    proxied: true
    ttl: auto
    
settings:
  cloudflare:
    - zone_id: #########
    - zone_api_token: ########
  misc:
    - create_if_no_exist: false

notifications:
  telegram: 
    enabled: false
    bot_token: token
    chat_id: id

Multiple domains is supported:

domains:
  - name: example.com
    ip_type: external
    ipv4: true
    ipv6: true
    proxied: true
    ttl: auto
  - name: example2.com
    ip_type: external
    ipv4: true
    ipv6: true
    proxied: true
    ttl: auto
  - name: ..........
.........

When placed in /usr/local/bin/

update-cloudflare-records

With your config file (need to be placed in same folder)

update-cloudflare-records yoru_config.conf

You can run the script via crontab

crontab -e

* * * * * /usr/local/bin/update-cloudflare-records

* * * * * /usr/local/bin/update-cloudflare-records myconfig.yaml

*/2 * * * * /usr/local/bin/update-cloudflare-records

@reboot /usr/local/bin/update-cloudflare-records

@reboot sleep 60 && /usr/local/bin/update-cloudflare-records

This Script will create a log file with only the last run information Log file will be located at the script's location.

Example:

/usr/local/bin/update-cloudflare-records.log