1. DDNS简介

DDNS是动态域名服务（Dynamic Domain Name Server）的缩写，可以实现固定域名到动态IP地址之间的解析。通常情况下，用户每次连接因特网时都会从ISP得到一个动态IP地址，即用户每次连接因特网得到的IP地址都不同。

2. 前期准备

首先你要有一个腾讯云的域名，进入腾讯云的DNSPOD然后点击右上角头像选择api秘钥进入后点击腾讯云api秘钥在点击新建秘钥

ddns_1-eeedf547-6744-4c10-9f4b-27da2681dae8

新建完成后会有2个参数，一个是SecretId另一个是SecretKey，我们吧这两个参数记下来。

ddns_2-f6fe0a49-62fd-47ab-bab4-17a3ff6e5ca8

然后去域名解析那里解析一个域名，如果用ipv6的地址就设置解析记录类型为AAAA，先随便填写一个记录值（简单点的记录值，fe80::ac34）,ipv4同理

最后来安装腾讯云的Python包

pip install -i https://mirrors.tencent.com/pypi/simple/ --upgrade tencentcloud-sdk-python

至此准备工作完成。

3. 源码展示

3.1 ddns.py

import json,os,requests,sys,netifaces,time
#from gmail import email
from tencentcloud.common import credential
from tencentcloud.common.profile.client_profile import ClientProfile
from tencentcloud.common.profile.http_profile import HttpProfile
from tencentcloud.common.exception.tencent_cloud_sdk_exception import TencentCloudSDKException
from tencentcloud.dnspod.v20210323 import dnspod_client, models
def start(ym,jlz):
    try:
        cred = credential.Credential("这里填写上面获取得SecretId", "这里填写SecretKey")
        httpProfile = HttpProfile()
        httpProfile.endpoint = "dnspod.tencentcloudapi.com"
        clientProfile = ClientProfile()
        clientProfile.httpProfile = httpProfile
        client = dnspod_client.DnspodClient(cred, "", clientProfile)
        req = models.DescribeRecordListRequest()
        params = {
            "Domain": ym,
            "Subdomain": jlz
        }
        req.from_json_string(json.dumps(params))
        resp = client.DescribeRecordList(req).to_json_string()
        resp = json.loads(resp)
        recordlist = resp["RecordList"]
        for record in recordlist:
            recordid = record['RecordId']
        return recordid
    except TencentCloudSDKException as err:
        print(err)
        #email("DDNS", str(err))
        sys.exit()
 
def fast(ym,jlz,type1):
    try:
        recordid = int(start(ym,jlz))
        if type1 == "AAAA":
            ip = netifaces.ifaddresses('eth0')[netifaces.AF_INET6][0]['addr'].replace("%eth0","")
        elif type1 == "A":
            ip = requests.get("http://members.3322.org/dyndns/getip").text
        else:
            print("程序不支持其他记录类型，只支持AAAA和A")
            sys.exit()
        cred = credential.Credential("这里填写上面获取得SecretId", "这里填写SecretKey")
        httpProfile = HttpProfile()
        httpProfile.endpoint = "dnspod.tencentcloudapi.com"
        clientProfile = ClientProfile()
        clientProfile.httpProfile = httpProfile
        client = dnspod_client.DnspodClient(cred, "", clientProfile)
        req = models.ModifyRecordRequest()
        params = {
            "Domain": ym,
            "SubDomain": jlz,
            "RecordType": type1,
            "RecordLine": "默认",
            "Value": ip,
            "RecordId": recordid
        }
        req.from_json_string(json.dumps(params))
        resp = client.ModifyRecord(req).to_json_string()
        localtime = time.asctime(time.localtime(time.time()))
        print(localtime,resp)
    except TencentCloudSDKException as err:
        print(localtime,err)
        #email("DDNS", str(err))
 
fil = sys.argv[1]
with open(fil,"r") as f:
    data = f.read()
data = json.loads(data)
for over in data:
    ym = over["域名"]
    jlz = over["主机记录"]
    type1 = over["记录类型"]
    fast(ym,jlz,type1)
print("结束")

3.2 ddns.conf

[
    {"域名":"zfx.top","主机记录":"wxllha","记录类型":"AAAA"},
    {"域名":"zfx.top","主机记录":"gfiker","记录类型":"A"}
]

4. 注意事项

然后就可以使用了，运行方式Python3 ddns.py ddns.conf

由于腾讯云限制，访问速度不能超过20次/秒

再设置一下自动执行

如果你是在将2个文件都放在了home目录的用户名下

*/6 * * * * python3 ~/ddns.py ~/ddns.conf

上面的意思是每隔6分钟执行一次，至此完成。

小张 / 2022-02-27 / - views

ubuntu ddns 使用

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