Cloudflare DDNS

cloudflare_ddns.sh

#!/bin/bash

# Author: Palemoky

email=
domain=
api_token=
dns_identifier=
zone_identifier=

# Get dns record of cloudflare
record=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records/$dns_identifier" -H "X-Auth-Email: $email" -H "Authorization: Bearer $api_token" -H "Content-Type: application/json" | jq .result.content)

# Get current ip
ip=$(curl -s whatismyip.akamai.com)

# Edit records only when IP changes
if [ ${record//\"/} != $ip ]; then 
    curl -s -X PATCH "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records/$dns_identifier" -H "X-Auth-Email: $email" -H "Authorization: Bearer $api_token" -H "Content-Type: application/json" --data '{"type":"A","name":"'$domain'","content":"'$ip'","ttl":1,"proxied":false}'
fi