通过python动态更新阿里云DNS解析，作为DDNS使用

[admin]

花9元钱在阿里云上云注册一个“.top”的顶级域名，再利用下面的代码定时更新你家路由器的IP，这样就实现了DDNS的效果了。
下面Python代码中的AcsClient（）、request.set_RecordId("17741030***760")这两个函数的参数请在https://help.aliyun.com/document_detail/53090.html 上查看。

Code: [全选] [Expand/Collapse]

1. #!/usr/bin/env python
2. #coding=utf-8
3. import json
4. import urllib
5. import datetime
6. from aliyunsdkcore.client import AcsClient
7. from aliyunsdkcore.acs_exception.exceptions import ClientException
8. from aliyunsdkcore.acs_exception.exceptions import ServerException
9. from aliyunsdkalidns.request.v20150109.DescribeDomainRecordInfoRequest import DescribeDomainRecordInfoRequest
10. from aliyunsdkalidns.request.v20150109.UpdateDomainRecordRequest import UpdateDomainRecordRequest
11.  
12. client = AcsClient('LTAIjOE53h******fI', 'JlvkmaCPek3SqqY*******GQbd8Zp', 'cn-hangzhou')
13.  
14. request = DescribeDomainRecordInfoRequest()
15. request.set_accept_format('json')
16.  
17. request.set_RecordId("17741030***760")
18.  
19. response = client.do_action_with_exception(request)
20. response = json.loads(response.decode())
21. old_ip = response['Value']
22.  
23. new_ip = urllib.urlopen("http://ip.42.pl/raw").read()
24.  
25. if old_ip != new_ip:
26.     request = UpdateDomainRecordRequest()
27.     request.set_accept_format('json')
28.     request.set_Value(new_ip)
29.     request.set_Type("A")
30.     request.set_RR("nas")
31.     request.set_RecordId("17741030***760")
32.     response = client.do_action_with_exception(request)
33.     print datetime.datetime.now(),' ', old_ip, ' => ', new_ip
34. else :
35.     print datetime.datetime.now(),' IP has not changed.', new_ip

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[admin]

在群晖的计划任务中，定时执行下面的命令，就可定时查询更新aliyun的DNS解析：

Code: [全选] [Expand/Collapse]

1. #!/bin/ash
2. sudo python /volume1/run/aliyundns.py >> /volume1/run/ddns.log

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[admin]

今天又抽了点时间将IP更新程序优化了一下，调用方法： python aliyundns.py www.atoo.top，代码如下：

Code: [全选] [Expand/Collapse]

1. # 阿里支DNS自动更新IP地址程序（Python3）
2. # 文件名  ： aliyundns.py
3. # 调用方法： python3 aliyundns.py www.atoo.top
4.  
5. #!/usr/bin/env python3
6. #coding=utf-8
7.  
8. import sys
9. import json
10. import urllib.request
11. import datetime
12. from aliyunsdkcore.client import AcsClient
13. from aliyunsdkcore.acs_exception.exceptions import ClientException
14. from aliyunsdkcore.acs_exception.exceptions import ServerException
15. from aliyunsdkalidns.request.v20150109.UpdateDomainRecordRequest import UpdateDomainRecordRequest
16. from aliyunsdkalidns.request.v20150109.DescribeSubDomainRecordsRequest import DescribeSubDomainRecordsRequest
17.  
18. if len(sys.argv)<=1:
19.     print( 'Usage: python3 aliyundna.py www.atoo.top')
20.     sys.exit(0)
21.    
22. accessKeyId = 'LTAIjO23**PWBfI'
23. accessSecret = 'JlvkmaC***514aFM9Z14JGQbd8Zp'
24.  
25. DomainName = sys.argv[1]  
26.  
27. # print sys.argv[0], sys.argv[1], sys.argv[2]
28.  
29. client = AcsClient(accessKeyId, accessSecret, 'cn-hangzhou')
30.  
31. request = DescribeSubDomainRecordsRequest()
32. request.set_accept_format('json')
33. request.set_SubDomain(DomainName)
34. response = client.do_action_with_exception(request)
35. # print response
36. response = json.loads(response.decode())
37. RecordId = response['DomainRecords']['Record'][0]['RecordId']
38. RR       = response['DomainRecords']['Record'][0]['RR']
39. old_ip   = response['DomainRecords']['Record'][0]['Value']
40.  
41. new_ip = urllib.request.urlopen("http://ip.42.pl/raw").read()
42.  
43.  
44. if old_ip !=  str(new_ip, 'utf-8'):
45.     request = UpdateDomainRecordRequest()
46.     request.set_accept_format('json')
47.  
48.     request.set_Value(new_ip)
49.     request.set_Type("A")
50.     request.set_RR(RR)
51.     request.set_RecordId(RecordId)
52.  
53.     response = client.do_action_with_exception(request)
54.     print( datetime.datetime.now(), ' ', DomainName,': ', old_ip, ' => ', new_ip )
55. # else :
56. #    print datetime.datetime.now(), ' ', DomainName, ': IP has not changed.', new_ip
57.  

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[BG6RSH]

还需要安装支持库：

代码: 全选

pip install aliyun-python-sdk-core # 安装阿里云SDK核心库
pip install aliyun-python-sdk-ecs # 安装管理ECS的库
pip install aliyun-python-sdk-alidns

[BG6RSH]

群晖中安装python3、pip3和阿里云Python SDK

安装步骤：
1、从群晖“套件中心”中安装python3应用；
2、通过SSH登录群晖后台，并通过“sudo -i”命令进入root用户角色；
3、进入python3应用目录”root@DiskStation:/var/packages/py3k/target/usr/local/bin#“
4、运行下列命令安装pip3

代码: 全选

wget https://bootstrap.pypa.io/get-pip.py
python3 get-pip.py   # 安装pip3
pip3 -V          # 查看pip3版本
pip3 install aliyun-python-sdk-core   # 安装阿里云SDK核心库
pip3 install aliyun-python-sdk-alidns   #安装阿里云DNS库