定时运行监测脚本，通过访问ip.cn来监测本地的公网ip是否发生更改
如果发现ip发生更改，更新Ali云上的DNS目标地址
安装阿里云的python SDK
# apt-get install python-pip
# pip install aliyun-python-sdk-alidns在 Aliyun Access Key管理控制台里添加Api访问的 Access Key
- Access Key ID
- Access Key Secret
- 以及你的阿里云账号ID
将以上内容添加到config.ini文件中
;config.ini
[keys]
access_key_id = ABCDEFGHIJKLMN
access_key_secret = abcdefghijklmnopqrstuvwxyz
account_id = myaccount@ali.com
[config]
format = json
domainname = qinyv.win使用getAliDNS.py来获取当前的Records信息
import json
import ConfigParser
from datetime import datetime
from aliyunsdkalidns.request.v20150109 import UpdateDomainRecordRequest, DescribeDomainRecordsRequest, \
DescribeDomainRecordInfoRequest
from aliyunsdkcore import client
cp = ConfigParser.ConfigParser()
cp.read("config.ini")
access_key_id = cp.get('keys','access_key_id')
access_Key_secret = cp.get('keys','access_Key_secret')
account_id = cp.get('keys','account_id')
domain_name = cp.get('config', 'DomainName')
record_format = cp.get('config', 'format')
def check_records(dns_domain, rc_format):
clt = client.AcsClient(access_key_id, access_Key_secret, 'cn-hangzhou')
request = DescribeDomainRecordsRequest.DescribeDomainRecordsRequest()
request.set_DomainName(dns_domain)
request.set_accept_format(rc_format)
result = clt.do_action_with_exception(request)
print result
if __name__ == "__main__":
check_records(domain_name, record_format)如果一切正常，运行后输出类似于一下信息
{
"PageNumber":1,
"TotalCount":5,
"PageSize":20,
"RequestId":"xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx",
"DomainRecords":{
"Record":[
{
"RR":"@",
"Status":"ENABLE",
"Value":"111.111.111.111",
"RecordId":"1234567878099",
"Type":"A",
"DomainName":
"qinyv.win",
"Locked":false,
"Line":"default",
"TTL":"600"
},
{
"RR":"www",
"Status":"ENABLE",
"Value":"111.111.111.111",
"RecordId":"1234567878099",
"Type":"A",
"DomainName":"qinyv.win",
"Locked":false,
"Line":"default",
"TTL":"600"},
]
}
}将需要修改的Records信息添加到config.ini文件，添加后仍能够执行getAliDNS.py来获取最新的信息
;config.ini
[keys]
access_key_id = ABCDEFGHIJKLMN
access_key_secret = abcdefghijklmnopqrstuvwxyz
account_id = myaccount@ali.com
[config]
ip = 111.111.111.111
format = json
domainname = qinyv.win
type = A
ttl = 600
[@]
recordid = 1234567878099
[www]
recordid = 1234567878000
使用updateAliDNS.py来检测本机的公网ip地址是否发生变动
# -*- coding: UTF-8 -*-
import json
import re
import os
import sys
import ConfigParser
from datetime import datetime
from aliyunsdkalidns.request.v20150109 import UpdateDomainRecordRequest, DescribeDomainRecordsRequest, \
DescribeDomainRecordInfoRequest
from aliyunsdkcore import client
cp = ConfigParser.ConfigParser()
cp.read("config.ini")
current_ip = cp.get('config', "ip")
access_key_id = cp.get('keys','access_key_id')
access_Key_secret = cp.get('keys','access_Key_secret')
account_id = cp.get('keys','account_id')
rc_format = cp.get('config', 'Format')
rc_domain = cp.get('config', 'DomainName')
rc_type = cp.get('config', 'Type')
rc_ttl = cp.get('config', 'TTL')
rc1_rr = '@'
rc1_id = cp.get(rc1_rr, 'RecordId')
rc2_rr = 'www'
rc2_id = cp.get(rc2_rr, 'RecordId')
def my_ip():
get_ip_method = os.popen('curl -s ip.cn')
get_ip_responses = get_ip_method.readlines()[0]
get_ip_pattern = re.compile(r'\d+\.\d+\.\d+\.\d+')
get_ip_value = get_ip_pattern.findall(get_ip_responses)[0]
return get_ip_value
def update_dns(dns_rc_rr, dns_rc_id, dns_value):
clt = client.AcsClient(access_key_id, access_Key_secret, 'cn-hangzhou')
request = UpdateDomainRecordRequest.UpdateDomainRecordRequest()
request.set_RR(dns_rc_rr)
request.set_Type(rc_type)
request.set_Value(dns_value)
request.set_RecordId(dns_rc_id)
request.set_TTL(rc_ttl)
request.set_accept_format(rc_format)
result = clt.do_action_with_exception(request)
return result
def write_to_config(rc_value):
cp.set("config", "ip", rc_value)
with open("config.ini","w") as f:
cp.write(f)
def log(msg):
time_now = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
current_script_path = sys.path[7]
log_file = current_script_path + '/' + 'aliyun_ddns_log.txt'
with open(log_file, 'a') as f:
f.write(time_now + ' ' + str(msg) + '\n')
return
if __name__ == "__main__":
rc_value = my_ip()
if current_ip != rc_value:
update_dns(rc1_rr, rc1_id, rc_value)
update_dns(rc2_rr, rc2_id, rc_value)
write_to_config(rc_value)
log(rc_value)
else:
log("-_-")最后，使用crontab来定期执行该任务来达到监测公网ip地址变动的效果
crontab -e
*/5 * * * * $python ~/ddns/updateAliDNS.py