有人喜欢是用cloudflare，有人喜欢国内服务商，区别就在于CF是全球商家，而国内自然是阿里好用一点。
目前只使用了阿里云，因为我的域名在阿里，后面也许会迁移到腾讯云或者其他商家，到时候再说。
测试日志：
阿里云DDNS脚本代码：
#!/bin/bash
set -e
#================================================================================================================#
# 功能：用于更新阿里云域名 IP，实现 DDNS 功能
#
# 在 http://www.gebi1.com/forum.php?mod=viewthread&tid=287344&page=1&_dsign=8f94f74c 提供的脚本文件基础上修改的。# ghui, modified 12/2/2019
# 在 N1 debian Buster with Armbian Linux 5.3.0-aml-g12 手动执行 / 定时任务 (crontab) 执行测试通过
#================================================================================================================#
#
# 使用方法：#
# 方法 1. 外部参数
# 修改源码，将对应参数 修改为 $1,$2,$3,$4,$5,$6
# aliddns.sh <aliddns_ak> <aliddns_sk> <aliddns_subdomain> <aliddns_domain> <aliddns_iptype> <aliddns_ttl>
# 示例（A 代表 IPv4，AAAA 代表 IPv6）:
# 执行：aliddns.sh "xxxx" "xxx" "test" "mydomain.site" "A" 600
# 执行：aliddns.sh "xxxx" "xxx" "test" "mydomain.site" "AAAA" 600
#
# 方法 2. 内部参数
# 修改源码，将 $1,$2,$3,$4,$5,$6 替换为对应参数
#
# 示例:
# aliddns_ak="xxxx"
# aliddns_sk="xxx"
# aliddns_subdomain="test"
# aliddns_domain="mydomain.site"
# aliddns_iptype="A"
# aliddns_ttl=600
# 执行：aliddns.sh
#
#================================================================================================================#
#--------------------------------------------------------------
# 参数
#
# (*)阿里云 AccessKeyId
aliddns_ak= 自行搜索获取
# (*)阿里云 AccessKeySecret
aliddns_sk= 自行搜索获取
# (*)域名：test.mydomain.com
aliddns_subdomain= 二级域名的前缀 #'test'
aliddns_domain= 输入你的一级域名 #'mydomain.com'
# (*)ip 地址类型：'A' 或 'AAAA'，代表 ipv4 和 ipv6
aliddns_iptype=A # 'A' 或 'AAAA'，代表 ipv4 和 ipv6
# TTL 默认 10 分钟 = 600 秒
aliddns_ttl=600 #"600"
#--------------------------------------------------------------
machine_ip=""ddns_ip=""
aliddns_record_id=""if ["$aliddns_subdomain"="@"]
then
aliddns_name=$aliddns_domain
else
aliddns_name=$aliddns_subdomain.$aliddns_domain
fi
now=`date`
echo "**************************************************"
echo "$now"
echo "$aliddns_name"
function getMachine_IPv4() {echo $(/usr/bin/wget -qO- -t1 -T2 http://ip.3322.net)
}
function getMachine_IPv6() {ipv6=`ip addr | grep "inet6.*global" | grep -v "deprecated" | awk '{print $2}' | awk -F"/" '{print $1}' | sed -n '1,1p'`
echo $ipv6
}
function getDDNS_IP() {current_ip=`nslookup -query=$aliddns_iptype $aliddns_name | grep "Address" | grep -v "#53" | awk '{print $2}'`
echo $current_ip
}
function urlencode() {
# urlencode <string>
out=""
while read -n1 c
do
case $c in
[a-zA-Z0-9._-]) out="$out$c" ;;
*) out="$out`printf'%%%02X'"'$c"`" ;;
esac
done
echo -n $out
}
function enc() {echo -n "$1" | urlencode}
function send_request() {
local args="AccessKeyId=$aliddns_ak&Action=$1&Format=json&$2&Version=2015-01-09"
local hash=$(echo -n "GET&%2F&$(enc"$args")" | openssl dgst -sha1 -hmac "$aliddns_sk&" -binary | openssl base64)
curl -s "http://alidns.aliyuncs.com/?$args&Signature=$(enc"$hash")"
}
function get_recordid() {grep -Eo '"RecordId":"[0-9]+"' | cut -d':' -f2 | tr -d '"'
}
function query_recordid() {send_request "DescribeSubDomainRecords" "SignatureMethod=HMAC-SHA1&SignatureNonce=$timestamp&SignatureVersion=1.0&SubDomain=$aliddns_name&Timestamp=$timestamp&Type=$aliddns_iptype"}
function update_record() {send_request "UpdateDomainRecord" "RR=$aliddns_subdomain&RecordId=$1&SignatureMethod=HMAC-SHA1&SignatureNonce=$timestamp&SignatureVersion=1.0&TTL=$aliddns_ttl&Timestamp=$timestamp&Type=$aliddns_iptype&Value=$(enc $machine_ip)"
}
function add_record() {send_request "AddDomainRecord&DomainName=$aliddns_domain" "RR=$aliddns_subdomain&SignatureMethod=HMAC-SHA1&SignatureNonce=$timestamp&SignatureVersion=1.0&TTL=$aliddns_ttl&Timestamp=$timestamp&Type=$aliddns_iptype&Value=$(enc $machine_ip)"
}
if ["$aliddns_iptype" = 'A']
then
echo "ddns is IPv4."
machine_ip=`echo "$(getMachine_IPv4)"`
echo "machine_ip = $machine_ip"
aliddns_record_id=$aliddnsipv4_record_id
else
echo "ddns is IPv6."
machine_ip=`echo "$(getMachine_IPv6)"`
echo "machine_ip = $machine_ip"
aliddns_record_id=$aliddnsipv6_record_id
fi
ddns_ip=`echo "$(getDDNS_IP)"`
echo "ddns_ip = $ddns_ip"
if ["$machine_ip" = ""]
then
echo "machine_ip is empty!"
exit 0
fi
if ["$machine_ip" = "$ddns_ip"]
then
echo "skippingn"
exit 1
fi
echo "start update..."
timestamp=`date -u "+%Y-%m-%dT%H%%3A%M%%3A%SZ"`
if ["$aliddns_record_id" = ""]
then
aliddns_record_id=`query_recordid | get_recordid`
echo "----------------" $aliddns_record_id "n"
if ["$aliddns_iptype" = 'A']
then
aliddnsipv4_record_id=$aliddns_record_id
else
aliddnsipv6_record_id=$aliddns_record_id
fi
fi
#add support */%2A and @/%40 record
if ["$aliddns_record_id" = ""]
then
echo "add record starting"
aliddns_record_id=`add_record | get_recordid`
if ["$aliddns_record_id" = ""]
then
echo "aliddns_record_id is empty. n"
else
if ["$aliddns_iptype" = 'A']
then
aliddnsipv4_record_id=$aliddns_record_id
else
aliddnsipv6_record_id=$aliddns_record_id
fi
echo "added record $aliddns_record_id n"
fi
else
echo "update record starting"
update_record $aliddns_record_id
echo "updated record $aliddns_record_id n"
fi定时执行：
*/2 * * * * /root/ddns/addns.sh >> /root/ddns/addns.log 2>&1定点清除log日志：
0 0 * * * > /root/ddns/addns.log同样，别忘记了addns.sh 和 addns.log 文件的权限，644改成755，赋予root权限即可。
正文结束
