用 python 编写简单的证书域名到期报警脚本

将脚本放在服务器的计划任务内，定时检测，证书到期不足60天发送报警邮件及钉钉提醒。

在服务器上需要提前安装好 requests 库。 pip install requests

钉钉机器人

https://open-doc.dingtalk.com/docs/doc.htm?treeId=257&articleId=105735&docType=1

脚本

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from datetime import datetime
from email.mime.text import MIMEText
from email.header import Header
from smtplib import SMTP
import requests
import json

host_server = 'mail.abc.com'
sender = 'lifangcheng@abc.com'
passwd = 'xxxxx'
sender_mail = 'lifangcheng@abc.com'
receiver = 'group@abc.com'

dingding_url = "https://https://oapi.dingtalk.com/robot/send?access_token=a23dd21319a3d24ff0e1839a17e0d44197abeb58858c1ed9a94484361xxxxxx"

headers = {"Content-Type": "application/json; charset=utf-8"}

server_list = [{"host": "*.open.abc.com", "expire_time": "2020-05-26"},
               {"host": "*.abc.com", "expire_time": "2020-05-26"},
               {"host": "*.x.abc.com", "expire_time": "2020-05-26"},
               {"host": "test.abc.net", "expire_time": "2020-05-09"}]


def echo_remaining_time(server_list):
    text = ""
    for server in server_list:
        now = datetime.now()
        expire_time = datetime.strptime(server["expire_time"], "%Y-%m-%d")
        diff = expire_time - now
        if int(diff.days) < 60:
            text = text + "证书名称:   " + server["host"]  \
              + "                   " + "剩余日期:" + str(diff.days) + "天" + "\n"
    return text


text = echo_remaining_time(server_list)

post_data = {
    "msgtype": "text",
    "text": {
        "content": text
    },
    "at": {
        "isAtAll": True
    }
}

r = requests.post(dingding_url, headers=headers,
                  data=json.dumps(post_data))
print r.content


def send_mail():
    mail_content = echo_remaining_time(server_list)
    mail_title = '重要：阿里云证书到期提醒！！！'

    if mail_content:
        smtp = SMTP(host_server)
        # smtp.set_debuglevel(1)
        smtp.ehlo(host_server)
        smtp.login(sender, passwd)

        msg = MIMEText(mail_content, "plain", 'utf-8')
        msg["Subject"] = Header(mail_title, 'utf-8')
        msg["From"] = sender_mail
        msg["To"] = receiver
        smtp.sendmail(sender_mail, receiver, msg.as_string())


if __name__ == '__main__':
    send_mail()