（2024年重写）基于shell的cloudflare动态ddns脚本 说明：1.该脚本需在Linux操作系统下运行，并配合crontab定时运行，请确保crond服务处于开启状态，建议1分钟检测一次IP变动，配置如下：crontab -e */1 * * * * cfddns.sh2.APIKEY和ZONE ID的具体获取方法参照以往发布过的说明：https://www.zavierlab.com/post/52.html以下为A记录脚本内容（适用于动态IPv4）：#!/bin/sh CF_API_KEY= CF_ZONE_ID= #Your cloudflare E-mail EMAIL= #Your network device, e.g.,eth0 ROUTER_NETWORK_DEVICE= #Your DNS record, e.g.,www.domain.com DNS_RECORD= CF_DNS_ID=$(curl -X GET "https://api.cloudflare.com/client/v4/zones/${CF_ZONE_ID}/dns_records?type=A&name=${DNS_RECORD}" -H "X-Auth-Email:${EMAIL}" -H "X-Auth-Key:${CF_API_KEY}" -H "Content-Type: application/json"|sed 's/,/\n/g'|grep -E "result.*id"|awk -F ":" '{print $3}'|sed 's/"//g') CURRENT_RESOLV=$( curl -k -X GET "https://api.cloudflare.com/client/v4/zones/${CF_ZONE_ID}/dns_records/${CF_DNS_ID}" \ -H "X-Auth-Email:${EMAIL}" \ -H "X-Auth-Key:${CF_API_KEY}" \ -H "Content-Type: application/json" |awk -F '"' '{print $26}' ) CURRENT_IP=$( ifconfig $ROUTER_NETWORK_DEVICE | awk -F'[ ]+|:' '/inet /{print $4}' ) if [ $CURRENT_RESOLV == $CURRENT_IP ]; then exit 1 else curl -k -X PUT "https://api.cloudflare.com/client/v4/zones/${CF_ZONE_ID}/dns_records/${CF_DNS_ID}" \ -H "X-Auth-Email:${EMAIL}" \ -H "X-Auth-Key:${CF_API_KEY}" \ -H "Content-Type: application/json" \ --data '{"type":"A","name":"'$DNS_RECORD'","content":"'$CURRENT_IP'","ttl":1,"proxied":false}' fi以下为AAAA记录DDNS脚本（适用于动态ipv6）：#!/bin/sh CF_API_KEY= CF_ZONE_ID= #Your cloudflare E-mail EMAIL= #Your network device, e.g.,eth0 ROUTER_NETWORK_DEVICE= #Your DNS record, e.g.,www.domain.com DNS_RECORD= CF_DNS_ID=$(curl -X GET "https://api.cloudflare.com/client/v4/zones/${CF_ZONE_ID}/dns_records?type=AAAA&name=${DNS_RECORD}" -H "X-Auth-Email:${EMAIL}" -H "X-Auth-Key:${CF_API_KEY}" -H "Content-Type: application/json"|sed 's/,/\n/g'|grep -E "result.*id"|awk -F ":" '{print $3}'|sed 's/"//g') CURRENT_RESOLV=$( curl -k -X GET "https://api.cloudflare.com/client/v4/zones/${CF_ZONE_ID}/dns_records/${CF_DNS_ID}" \ -H "X-Auth-Email:${EMAIL}" \ -H "X-Auth-Key:${CF_API_KEY}" \ -H "Content-Type: application/json" |awk -F '"' '{print $26}' ) CURRENT_IP=$( ifconfig $ROUTER_NETWORK_DEVICE |grep "prefixlen 128"|awk '{print $2}' ) if [ $CURRENT_RESOLV == $CURRENT_IP ]; then exit 1 else curl -k -X PUT "https://api.cloudflare.com/client/v4/zones/${CF_ZONE_ID}/dns_records/${CF_DNS_ID}" \ -H "X-Auth-Email:${EMAIL}" \ -H "X-Auth-Key:${CF_API_KEY}" \ -H "Content-Type: application/json" \ --data '{"type":"AAAA","name":"'$DNS_RECORD'","content":"'$CURRENT_IP'","ttl":1,"proxied":false}' fi

基于CloudFlare API的纯Shell动态DNS(DDNS)脚本 家庭宽带的IP是不固定的，当出门在外，人不在家时，一旦IP变动，就给接入家中的设备（如监控）带来许多麻烦，于是我编写了一个能在Linux系统下运行，基于cloudflare API的动态DNS脚本，虽然国内已有花生壳之类的ddns服务，但是那些实在是太坑爹，比如只能使用它提供的二级域名，而该脚本能够配置顶级域名的动态DNS解析。使用前提：局域网内有Linux主机（如openwrt路由设备）、有一个顶级域名、域名解析必须由CloudFlare托管。使用方法：步骤一：到CloudFlare官网注册一个帐号，找到DNS选项，如下图箭头指向，根据其要求，到你的域名注册商处将DNS服务器修改为CloudFlare提供的地址，修改完验证成功后就可以开始解析了。步骤三：获取三个Key值，其中APIKey和ZoneID可在官网登录后的Overview页面获得，而DNSID获取较为复杂，具体命令如下(需要安装curl)：curl -X GET "https://api.cloudflare.com/client/v4/zones/输入你的ZoneID/dns_records?type=A&name=刚才设置的记录值(比如xxx.yourdomain.com)" \ -H "X-Auth-Email:你注册时的邮箱" \ -H "X-Auth-Key:你的APIKEY" \ -H "Content-Type: application/json"运行该命令后会输出结果，找到"id":"xxx"这个选项，其中的xxx即对应你的DNSID值下方为shell脚本（需要设备安装curl），配置好后可利用crontab命令定时执行，（1-2分钟执行一次最佳）具体操作如下：crontab -e */2 * * * * 脚本存放目录cfddns.sh#!/bin/sh CF_API_KEY=输入你的APIKEY CF_ZONE_ID=输入你的ZONEID CF_DNS_ID=输入你的解析记录值对应的DNSID EMAIL=输入你注册时的邮箱 ROUTER_NETWORK_DEVICE=你的设备拨号的网卡，openwrt一般是pppoe，可使用ifconfig命令查看 TEMP_FILE_PATH=/tmp/cloudflare-ddns/DNS_RECORD=填写用于ddns的DNS记录，要完整填写，比如：xxx.yourdomain.com mkdir -p ${TEMP_FILE_PATH}curl -k -X GET "https://api.cloudflare.com/client/v4/zones/${CF_ZONE_ID}/dns_records/${CF_DNS_ID}" \ -H "X-Auth-Email:${EMAIL}" \ -H "X-Auth-Key:${CF_API_KEY}" \ -H "Content-Type: application/json" |awk -F '"' '{print $26}'>${TEMP_FILE_PATH}/current_resolving.txt ifconfig $ROUTER_NETWORK_DEVICE | awk -F'[ ]+|:' '/inet /{print $4}'>${TEMP_FILE_PATH}/current_ip.txt if [ "$(cat ${TEMP_FILE_PATH}/current_ip.txt)" == "$(cat ${TEMP_FILE_PATH}/current_resolving.txt)" ]; then exit 1 else CURRENT_IP="$(cat ${TEMP_FILE_PATH}/current_ip.txt)" curl -k -X PUT "https://api.cloudflare.com/client/v4/zones/${CF_ZONE_ID}/dns_records/${CF_DNS_ID}" \ -H "X-Auth-Email:${EMAIL}" \ -H "X-Auth-Key:${CF_API_KEY}" \ -H "Content-Type: application/json" \ --data '{"type":"A","name":"'$DNS_RECORD'","content":"'$CURRENT_IP'","ttl":1,"proxied":false}' fi