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补全订单信息
免费证书，随意填写，问题不大
购买成功，查看订单详情，获取 TXT 值信息

添加 DNS TXT 验证

根据上一步，查看证书订单详情，获取 TXT 值信息

添加 DNS TXT 验证，注意记录值是_dnsauth.pub。下图是通过代码添加，也可以直接在控制台添加。具体图示和代码如下：

#!/usr/bin/env python
#coding=utf-8

import os

import sys

# 入参格式 python add_domain_record.py iamlj.com testapi1 A 1.1.1.1

from aliyunsdkcore.client import AcsClient

from aliyunsdkcore.request import CommonRequest

access_key_id = os.environ.get(\'ALI_ACCESS_KEY_ID\')

access_key_secret = os.environ.get(\'ALI_ACCESS_KEY_SECRET\')

client = AcsClient(access_key_id, access_key_secret, \'default\')

request = CommonRequest()

request.set_accept_format(\'json\')

request.set_domain(\'alidns.aliyuncs.com\')

request.set_method(\'POST\')

request.set_protocol_type(\'http\') # https | http

request.set_version(\'2015-01-09\')

request.set_action_name(\'AddDomainRecord\')

request.add_query_param(\'DomainName\', sys.argv[1])

request.add_query_param(\'RR\', sys.argv[2])

request.add_query_param(\'Type\', sys.argv[3])

request.add_query_param(\'Value\', sys.argv[4])

response = client.do_action(request)

# python2:  print(response)

print(str(response))