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aliyun_ddns's Introduction

aliyun_ddns --基于阿里云解析的动态域名解析

之前考虑的方案是使用小米路由器ddns+花生壳，然而看到花生壳恶心的域名名称后果断放弃了，加之其免费的动态域名解析服务的口碑都是出奇的慢，之前也使用过，速度确实没法玩耍。

更新 2022.01

  • 更换ip源
  • 支持ipv6

为何要写这个

为了达到使用域名即可访问家里服务的目的，需要两个条件，外网ip和域名。

域名这个简单，在阿里云购买一个即可，麻烦的是ip，由于目前家庭使用的宽带基本上都是服务商动态分配的ip(有的甚至只分配内网ip，这个需要打电话给服务商要回外网ip！)这样的话，域名解析就没法玩了，此时需要动态域名解析，能够在家里ip变化的时候更新解析记录。

当然可以使用花生壳，但是开头已经提到了两个蛋疼的原因，所以，这个工具脚本需求就来了！

实现方法

定时检测自家外网ip地址，有变化就调用阿里云解析的api修改域名解析。

前提条件

  1. 确保自己拥有外网ip
  2. 使用阿里云解析，申请access_key
  3. 首先在阿里云解析中新增域名的解析记录 (重要！！！因为本脚本只是修改，所以前提得有可修改的解析记录！！！)

脚本依赖

  1. python环境 (安装python2.7, 不支持python3)
  2. pip install requests

使用说明

  1. 修改aliyun_settings.json中的access_key、access_secret为自己申请的accesskey
  2. 修改aliyun_settings.json中的domain为自己要解析的域名，比如 "baidu.com''
  3. 定时执行 python aliyun_ddns.py (windows和linux环境下的定时任务就不提了)
  4. 最新的ip会保存在同级目录的ip.txt中，方便查看
  5. 脚本的执行步骤有print日志，如有问题，先分析下输出内容

注意

修改完解析记录后并不会马上生效，因为dns服务都有缓存，所以得等，阿里云的解析ttl可以设置的最小值为10分钟，所以有时候得等一会才能生效。 如果迟迟不生效，首先登录阿里云控制台查看解析记录是否成功修改，如果已经修改，那么就是dns服务的缓存问题了，这个基本就是死等。。。

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aliyun_ddns's Issues

requests.get(REQUEST_URL, get_params) 这句遇到错误

requests.get(REQUEST_URL, get_params) 这句遇到：

Traceback (most recent call last):
  File "aliyun_ddns.py", line 123, in 
    update_yun(ip)
  File "aliyun_ddns.py", line 76, in update_yun
    get_resp = requests.get(REQUEST_URL, get_params)
TypeError: get() takes exactly 1 argument (2 given)

REQUEST_URL: https://alidns.aliyuncs.com/
get_params: {'SignatureVersion': '1.0', 'DomainName': u'xxx', 'Timestamp': 'xxx', 'Format': 'json', 'SignatureMethod': 'HMAC-SHA1', 'AccessKeyId': u'xxx', 'TypeKeyWord': 'A', 'Version': '2015-01-09', 'Signature': 'xxx', 'Action': 'DescribeDomainRecords', 'SignatureNonce': UUID('xxx')}

这报错是什么原因

update remote record...
get_records============
{u'Code': u'Forbidden.RAM', u'Message': u"User not authorized to operate on the specified resource, or this API doesn't support RAM.", u'HostId': u'alidns.aliyuncs.com', u'RequestId': u'3AFE62CC-8458-46C7-811A-BA0B60299256'}
Traceback (most recent call last):
File "aliyun_ddns.py", line 124, in
update_yun(ip)
File "aliyun_ddns.py", line 78, in update_yun
for record in records['DomainRecords']['Record']:
KeyError: 'DomainRecords'

百度的ip解析没了，需要更换一下ip解析地址

rt：
我修改了一下解析的地址，修改get_curr_ip 方法如下

def get_curr_ip():
        headers = {
                'content-type': 'text/html',
                'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:22.0) Gecko/20100101 Firefox/22.0'
        }
        resp = requests.get('http://ip.tool.chinaz.com/', headers=headers)
        soup = BS(resp.content, 'html.parser')
        return soup.select('.fz24')[0].string

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