Python - Cloudflare Auto Update DNS Record IPs

Python script that updates DNS records on Cloudflare with the current WAN IP address. Below are the instructions to use this code:

1. Install Required Libraries:

   • Ensure that you have the necessary libraries installed by running the following command:

     pip install requests jproperties

2. Obtain Cloudflare API Token and Zone ID:

   • Before running the script, you need to obtain your Cloudflare API Token and Zone ID.

   • Create a file named secrets.properties in the same directory as the script.

   • Open the secrets.properties file and add the following lines:

     API_KEY=<your_api_token>
     ZONE_ID=<your_zone_id>
     

   • Replace <your_api_token> with your Cloudflare API Token.

   • Replace <your_zone_id> with your Cloudflare Zone ID.

3. Understand the Methods:

   • The get_wan_ip method retrieves the current WAN IP using the ipify API.
   • The get_dns_records method retrieves the existing DNS records for the specified zone ID.
   • The update_dns_record method updates a single DNS record if its type is "A" and the IP is different from the current WAN IP.
   • The update_dns_records method gets the current WAN IP and DNS records, and then uses a ThreadPoolExecutor to concurrently update the DNS records using multiple threads.
   • The main code creates an instance of CloudflareDNSUpdater and calls the update_dns_records method to update the DNS records.

4. Execute the Script:

   • To execute the script manually, run the following command in your terminal:

     python cloudflare-updateDnsIPs.py

   • The script will retrieve the WAN IP address, fetch the DNS records from Cloudflare, and update any A-type records with a different IP address.

5. Add Script to Scheduler:

   • Once you have verified the script runs without errors, you can set it to a scheduler to run automatically. I used crontab to do this.

   • To add script to crontab and to run every hour, run the following command:

     0 * * * * python cloudflare-updateDnsIPs.py > /dev/null 2>&1

6. Review the Output:

   • The script will print the status of each DNS record update.
   • If a DNS record is successfully updated, it will print: Updated DNS record '<dns_name>' with IP '<wan_ip>'.
   • If a DNS record fails to update, it will print: Failed to update DNS record '<dns_name>' with IP '<wan_ip>'.

PowerShell - Cloudflare Auto Update DNS Record IPs

PowerShell script that updates DNS records on Cloudflare with the current WAN IP address. Below are the instructions to use this code:

1. Obtain Cloudflare API Token and Zone ID:

   • Before running the script, you need to obtain your Cloudflare API Token and Zone ID.

   • Create a file named secrets.properties in the same directory as the script.

   • Open the secrets.properties file and add the following lines:

     API_KEY=<your_api_token>
     ZONE_ID=<your_zone_id>
     

   • Replace <your_api_token> with your Cloudflare API Token.

   • Replace <your_zone_id> with your Cloudflare Zone ID.

2. Understand the variables and steps:

   • The $wanIp method retrieves the current WAN IP using the ipify API.
   • The $dnsRecords method retrieves the existing DNS records for the specified zone ID.
   • The foreach ($record in $dnsRecords) loops through the dnsRecords
   • The $response method in conjuntion with the if ($record.type -eq "A" -and $record.content -ne $wanIp) condition updates a single DNS record if its type is "A" and the IP is different from the current WAN IP.

3. Execute the Script:

   • To execute the script manually, run the following command in your terminal:

     .\cloudflare-updateDnsIPs.ps1

   • The script will retrieve the WAN IP address, fetch the DNS records from Cloudflare, and update any A-type records with a different IP address.

4. Add Script to Windows Scheduler:

   • Once you have verified the script runs without errors, you can set it to a scheduler to run automatically.

5. Review the Output:

   • The script will print the status of each DNS record update.
   • If a DNS record is successfully updated, it will print: Updated DNS record $($record.name) with IP $wanIp.
   • If a DNS record fails to update, it will print: Failed to update DNS record $($record.name)'.