Flush Cloudlflare DNS records

flush_dns.sh

#!/bin/bash
# Flush Cloudlflare DNS records

CF_TOKEN=""
ZONE_ID=""

QUERY_RECORDS() {
  curl -s -X GET https://api.cloudflare.com/client/v4/zones/${ZONE_ID}/dns_records?per_page=500 \
    -H "Authorization: Bearer ${CF_TOKEN}" \
    -H "Content-Type: application/json"
}

REMOVE_RECORD() {
  curl -s -X DELETE https://api.cloudflare.com/client/v4/zones/${ZONE_ID}/dns_records/$1 \
    -H "Authorization: Bearer ${CF_TOKEN}" \
    -H "Content-Type: application/json"
  printf "\n"
}

QUERY_RECORDS | jq .result[].id | tr -d '"' | (
  while read id; do
    REMOVE_RECORD $id &
  done
)

wait