编写一个阿里云DDNS的shell脚本
时间: 2023-02-23 20:55:10 浏览: 82
首先,您需要获取阿里云的AccessKey ID和AccessKey Secret,以便于通过API进行操作。
然后,可以使用cURL命令,向阿里云的API发送HTTP请求,来实现动态DNS的功能。
以下是一个简单的阿里云DDNS shell脚本的示例:
```
#!/bin/bash
# 阿里云AccessKey ID
access_key_id="<your access key id>"
# 阿里云AccessKey Secret
access_key_secret="<your access key secret>"
# 域名
domain="<your domain>"
# 主机记录
RR="<your RR>"
# 获取当前公网IP
ip=`curl -s http://ipv4.icanhazip.com`
# 构造签名参数
timestamp=`date -u "+%Y-%m-%dT%H%%3A%M%%3A%SZ"`
signature=`echo -n "GET&%2F&AccessKeyId%3D$access_key_id%26Action%3DDescribeDomainRecords%26DomainName%3D$domain%26Format%3DXML%26SignatureMethod%3DHMAC-SHA1%26SignatureNonce%3D$RANDOM%26SignatureVersion%3D1.0%26Timestamp%3D$timestamp%26Type%3D" | openssl dgst -binary -sha1 -hmac "$access_key_secret&" | base64`
# 获取解析记录的ID
record_id=`curl -s "http://alidns.aliyuncs.com/?Action=DescribeDomainRecords&DomainName=$domain&Format=XML&Signature=$signature&SignatureMethod=HMAC-SHA1&SignatureNonce=$RANDOM&SignatureVersion=1.0&Timestamp=$timestamp&Type=&AccessKeyId=$access_key_id" | grep "<RecordId>" | awk -F "<RecordId>" '{print $2}' | awk -F "<" '{print $1}'`
# 如果IP有变化,则更新DNS记录
if [ $ip != $record_id ]
then
timestamp=`date -u "+%Y-%m-%dT%H%%3A%M%%3A%SZ"`
signature=`echo -n "GET&%2F&AccessKeyId%3D$access_key_id%26Action%3DUpdateDomainRecord%26DomainName%3D$domain%