Cloudflare as a Dynamic DNS🌩

#cloudflare #ddns #raspberrypi

If you need to have a DNS record that point to a Dynamic IP (DDNS), for example, you home IP address, this tool allow you to accomplish this job!

For do this this we need cloudflare-dynamic-ip tool allow you to simply have a specific DNS record such as home.example.com that point to your dynamic IP.

Requirements

Domain Name
Cloudflare Account
Raspberry Pi4 or any other Linux Based OS
composer
php-7.3

Installation

Clone the Github repo, install dependencies, set API Token and set a cron job every 15min that run this script and you’re done!🚀

git clone https://github.com/andp97/cloudflare-dynamic-ip.git
cd cloudflare-dynamic-ip
INSTALL_PATH=$(pwd)
composer install --no-dev
nano .env
echo -e "*/15 * * * * $INSTALL_PATH/cf-ip 2>&1 > /dev/null\n"
crontab -e

You can also execute this script via bash

#Get dns record name from env and target ip from remote host (https://ip.andreapavone.com) 

./cf-ip

#Passing parameters to the script

./cf-ip <dns_record_name> <target_ip>

On .env file you can set:

CLOUDFLARE_TOKEN (see how can you generate token here: https://support.cloudflare.com/hc/en-us/articles/200167836-Managing-API-Tokens-and-Keys)
CLOUDFLARE_ZONE_NAME or CLOUDFLARE_ZONE_ID
DNS_RECORD_NAME is the subdomain that you prefer to use (for example: home.example.com). If you prefer to be safer use a randomized token for the DNS_RECORD_NAME