使用 Cloudflare API，支持 IPv4，轻松地更新 DNS，还可添加定时任务达到自动更新 IP 的目的。
下载脚本
1wget -qO /usr/local/bin/cf-ddns.sh https://moththe.com/posts/cf_ddns/cf-ddns.sh
使用方法
- 修改脚本中
auth_email,auth_key,zone_name,record_name对应内容为自己的信息 - 给脚本执行权限
chmod +x /usr/local/bin/cf-ddns.sh - 执行
crontab -e并添加以下定时任务：*/1 * * * * /usr/local/bin/cf-ddns.sh >/dev/null 2>&1
怎么获取我的Cloudflare API？ 访问 https://www.cloudflare.com/a/account/my-account ，在上方选择 API Tokens 标签页，然后查看页面下方的 Global API Key。
脚本内容
1#!/bin/bash
2
3# CHANGE THESE
4auth_email="[email protected]"
5auth_key="c2547eb745079dac9320b638f5e225cf483cc5cfdda41" # found in cloudflare account settings
6zone_name="example.com"
7record_name="www.example.com"
8
9# MAYBE CHANGE THESE
10ip=$(curl -s http://ipv4.icanhazip.com)
11ip_file="ip.txt"
12id_file="cloudflare.ids"
13log_file="cloudflare.log"
14
15# LOGGER
16log() {
17 if [ "$1" ]; then
18 echo -e "[$(date)] - $1" >> $log_file
19 fi
20}
21
22# SCRIPT START
23log "Check Initiated"
24
25if [ -f $ip_file ]; then
26 old_ip=$(cat $ip_file)
27 if [ $ip == $old_ip ]; then
28 echo "IP has not changed."
29 exit 0
30 fi
31fi
32
33if [ -f $id_file ] && [ $(wc -l $id_file | cut -d " " -f 1) == 2 ]; then
34 zone_identifier=$(head -1 $id_file)
35 record_identifier=$(tail -1 $id_file)
36else
37 zone_identifier=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones?name=$zone_name" -H "X-Auth-Email: $auth_email" -H "X-Auth-Key: $auth_key" -H "Content-Type: application/json" | grep -Po '(?<="id":")[^"]*' | head -1 )
38 record_identifier=$(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: $auth_key" -H "Content-Type: application/json" | grep -Po '(?<="id":")[^"]*')
39 echo "$zone_identifier" > $id_file
40 echo "$record_identifier" >> $id_file
41fi
42
43update=$(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\"}")
44
45if [[ $update == *"\"success\":false"* ]]; then
46 message="API UPDATE FAILED. DUMPING RESULTS:\n$update"
47 log "$message"
48 echo -e "$message"
49 exit 1
50else
51 message="IP changed to: $ip"
52 echo "$ip" > $ip_file
53 log "$message"
54 echo "$message"
55fi
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