LetsEncrypt, Powerdns manager und dns-01 challenge

#!/bin/bash
USER= #description from pdns panel
ID= #What pdns admin  says
PASS= # you know that one ;)

# we get: CERTBOT_DOMAIN 
# CERTBOT_VALIDATION (key)
# CERTBOT_TOKEN (http only)
# CERTBOT_CERT_PATH (bla, same as CERTBOT_KEY_PATH and CERTBOT_SNI_DOMAIN

CREATE_DOMAIN="_acme-challenge.$CERTBOT_DOMAIN"

# alt: ID from pdns - -d id=$id \
curl -X GET -G https://$PATH/api/remote.php \
    -d action=updateRecord \
    -d desc=$USER \
    -d password=$PASS \
    -d domain=$CREATE_DOMAIN \
    -d content=$CERTBOT_VALIDATION \
    --trace-ascii -

COUNT=20
NEED=3
while [ $NEED -gt 0 ];do
	COUNT=$(( $COUNT -1 ))
	if [ $COUNT -lt 1 ];then
		echo "CHALLENGE FAILED - DNS NOT UP2DATE" 1>&2
		exit 1
	fi;
    NEED=3
    for I in 1 2 3;do
        dig +short -t TXT $CREATE_DOMAIN @ns$I.$DOM | grep $CERTBOT_VALIDATION  >/dev/null
        [ $? -eq 0 ] && NEED=$(( $NEED - 1 ))
    done
    sleep 1;
done