Cloudflare DynDNS

cloudflare-dyndns.txt

#!/bin/bash

# Parse the following json to get the id.
# curl https://www.cloudflare.com/api_json.html -d 'a=rec_load_all' -d 'tkn=[API_KEY]' -d 'email=[EMAIL]' -d 'z=[ZONE]'
# add this to /etc/crontab - */5 *   * * *   root    /root/cloudflare_ddns.sh

NEW_IP=`dig +short myip.opendns.com @resolver1.opendns.com`
CURRENT_IP=`cat /var/tmp/current_ip.txt`

echo "New Ip = ${NEW_IP}"

if [ "$NEW_IP" = "$CURRENT_IP" ]
then
        echo "No Change in IP Adddress"
else
        curl https://www.cloudflare.com/api_json.html \
          -d 'a=rec_edit' \
          -d 'tkn=[API_KEY]' \
          -d 'email=[CLOUDFLARE_EMAIL]' \
          -d 'z=[CLOUDFLARE_ZONE]' \
          -d 'id=[CLOUDFLARE_ID]' \
          -d 'type=A' \
          -d 'name=[DOMAIN]' \
          -d 'ttl=1' \
          -d "content=$NEW_IP"
        echo $NEW_IP > /var/tmp/current_ip.txt
fi