This is a bash script to act as a Cloudflare DDNS client, useful replacement for ddclient.
ddns.sh files to /root/chmod +x /root/ddns.sh/etc/crontab add line: * */1 * * * root bash /root/ssh.sh
4.2) Or use /etc/rc.local file, who will execute script on startup| #!/bin/bash | |
| # Forked by lifehome/README.md | |
| # CHANGE THESE | |
| auth_email="[email protected]" # The email used to login 'https://dash.cloudflare.com' | |
| auth_key="fffffffffffffffffffffffffffffffffffff" # Top right corner, "My profile" > "Global API Key" | |
| zone_identifier="ffffffffffffffffffffffffffffffff" # Can be found in the "Overview" tab of your domain | |
| record_name="domain.example.com" # Which record you want to be synced | |
| # DO NOT CHANGE LINES BELOW | |
| ip=$(curl -s https://v4.ifconfig.co/ip) | |
| # SCRIPT START | |
| echo "[Cloudflare DDNS] Check Initiated" | systemd-cat | |
| # Seek for the record | |
| record=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records?name=$record_name" -H "X-Auth-Email: $auth_email" -H "X-Auth-Key: $auth_key" -H "Content-Type: application/json") | |
| # Can't do anything without the record | |
| if [ $record == *"\"count\":0"* ]; then | |
| echo -e "Record does not exist, perhaps create one first?" | systemd-cat -p emerg | |
| exit 1 | |
| fi | |
| # Set existing IP address from the fetched record | |
| old_ip=$(echo "$record" | grep -Po '(?<="content":")[^"]*' | head -1) | |
| # Compare if they're the same | |
| if [ $ip == $old_ip ]; then | |
| echo "IP has not changed." | |
| exit 0 | |
| fi | |
| # Set the record identifier from result | |
| record_identifier=$(echo "$record" | grep -Po '(?<="id":")[^"]*' | head -1) | |
| # The execution of update | |
| update=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$zone_identifier/dns_records/$record_identifier" -H "X-Auth-Email: $auth_email" -H "X-Auth-Key: $auth_key" -H "Content-Type: application/json" --data "{\"id\":\"$zone_identifier\",\"type\":\"A\",\"name\":\"$record_name\",\"content\":\"$ip\"}") | |
| # The moment of truth | |
| case "$update" in | |
| *"\"success\":false"*) | |
| echo -e "[Cloudflare DDNS] Update failed for $record_identifier. DUMPING RESULTS:\n$update" | systemd-cat -p emerg | |
| exit 1;; | |
| *) | |
| echo "[Cloudflare DDNS] IP synced to: $ip" | systemd-cat;; | |
| esac |