Python实现报警信息实时发送至邮箱功能，具体内容如下所示：

程序设计

实现代码

cpu.py

# -*- coding: utf-8 -*-
import psutil
import time
from emailsender import txtMail
from log import myloggers
import gc
class mycpumonitor():
 # up是cpu监控的阈值，默认是90%
 def __init__(self, up=None):
  self.up = 90 if up is None else up
 def cpu_monitor(self):
  cpu_percent = psutil.cpu_percent()
  now = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
  if cpu_percent > self.up:
   filename = 'cpu.txt'
   with open(filename, 'w') as f: # 如果filename不存在会自动创建， 'w'表示写数据，写之前会清空文件中的原有数据！
    f.write(str(now) + "CPU使用率超过" + str(self.up) + "!!!!.\n")
    f.write(str(now) + "当前CPU使用率" + str(cpu_percent) + "!!!\n")
   mail = txtMail()
   try:
    mail.txt_send_mail(filename="test.config", alarm=filename)
    temp_msg = "CPU超标，当前CPU使用率：" + str(cpu_percent)
    logger1 = myloggers(temp_msg)
    logger1.maillogging()
    del mail
    gc.collect()
   except:
    print("文本文件格式不正确")

mem.py

# -*- coding: utf-8 -*-
import psutil
import time
from emailsender import txtMail
from log import myloggers
import gc
class mymemmonitor():
 # up是内存监控的阈值，默认是90%
 def __init__(self, up=None):
  self.up = 90 if up is None else up
 def mem_monitor(self):
  mem_percent = psutil.virtual_memory()[2]
  now = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
  if mem_percent > self.up:
   filename = 'mem.txt'
   with open(filename, 'w') as f: # 如果filename不存在会自动创建， 'w'表示写数据，写之前会清空文件中的原有数据！
    f.write(str(now) + "内存使用率超过" + str(self.up) + "!!!!.\n")
    f.write(str(now) + "当前内存使用率" + str(mem_percent) + "!!!\n")
   mail = txtMail()
   try:
    mail.txt_send_mail(filename="test.config", alarm=filename)
    temp_msg = "内存超标，当前内存使用率：" + str(mem_percent)
    logger1 = myloggers(temp_msg)
    logger1.maillogging()
    del mail
    gc.collect()
   except:
    print("文本文件格式不正确")

watchpc.py

# -*- coding: utf-8 -*-
# Author: WuYang
# Date-modified: 07Nov2019
# Function: send alarm data through SMTP protocol
# Architecture: cpu.py, mem.py, etc. is to monitor performance of server
# Lang: Python3.7
# Env: CentOS7/WindowServer 2012R2
import time
from cpu import mycpumonitor
from mem import mymemmonitor
import gc
if __name__ == "__main__":
 while True:
  memObj = mymemmonitor(50)
  memObj.mem_monitor()
  cpuObj = mycpumonitor(10)
  cpuObj.cpu_monitor()
  del memObj
  gc.collect()
  time.sleep(10)

emailsender.py

#-*- coding: utf-8 -*-
import smtplib
import chardet
import codecs
import os
from email.mime.text import MIMEText
from email.header import Header
from email.mime.multipart import MIMEMultipart
# 第三方SMTP服务
class txtMail(object):
 def __init__(self, host=None, auth_user=None, auth_password=None):
  self.host = "smtp.163.com" if host is None else host # 设置发送邮件服务使用专用报警账户的用户名
  self.auth_user = "xxxxxx@163.com" if auth_user is None else auth_user # 上线时使用专用报警账户的用户名
  self.auth_password = (
   "xxxxxxxx" if auth_password is None else auth_password
  ) # 上线时使用专用报警账户的密码
  self.sender = "xxxxxxxx@163.com"
 def send_mail(self, subject, msg_str, recipient_list, attachment_list=None):
  message = MIMEMultipart()
  message["From"] = self.sender
  message["To"] = Header(";".join(recipient_list), "utf-8")
  message["Subject"] = Header(subject, "utf-8")
  message.attach(MIMEText(msg_str, "plain", "utf-8"))
  # 如果有附件，则添加附件
  if attachment_list:
   for att in attachment_list:
    attachment = MIMEText(open(att, "rb").read(), "base64", "utf-8")
    attachment["Content-Type"] = "application/octet-stream"
    # 这里filename可以任意写，写什么名字，邮件中显示什么名字
    filename = os.path.basename(att)
    attachment.add_header(
     "Content-Disposition",
     "attachment",
     filename=("utf-8", "", filename),
    )
    message.attach(attachment)
  smtpObj = smtplib.SMTP_SSL(self.host)
  smtpObj.connect(self.host, smtplib.SMTP_SSL_PORT)
  smtpObj.login(self.auth_user, self.auth_password)
  smtpObj.sendmail(self.sender, recipient_list, message.as_string())
  smtpObj.quit()
  print("邮件发送成功")
  print(attachment_list)
 def guess_chardet(self, filename):
  """
  :param filename: 传入一个文本文件
  :return: 返回文本文件的编码格式
  """
  encoding = None
  try:
   # 由于本需求所解析的文本文件都不大，可以一次性读入内存
   # 如果是大文件，则读取固定字节数
   raw = open(filename, "rb").read()
   if raw.startswith(codecs.BOM_UTF8): # 处理UTF-8 with BOM
    encoding = "utf-8-sig"
   else:
    result = chardet.detect(raw)
    encoding = result["encoding"]
  except:
   pass
  return encoding
 def txt_send_mail(self, filename, alarm):
  """
  :param filename:
  :return:
  将指定格式的txt文件发送至邮箱，txt文件样例如下
  # 收件人，逗号分隔
  # 附件，逗号分隔
  """
  with open(filename, encoding=self.guess_chardet(filename)) as f:
   lines = f.readlines()
  recipient_list = lines[0].strip().split(",")
  attachment_list = []
  for file in lines[-1].strip().split(","):
   if os.path.isfile(file):
    attachment_list.append(file)
  # 如果没有附件，则为None
  if attachment_list == []:
   attachment_list = None
  with open(alarm, encoding=self.guess_chardet(alarm)) as f1:
   lines1 = f1.readlines()
  subject = lines1[0].strip()
  msg_str = "".join(lines1[1:])
  self.send_mail(
   subject=subject,
   msg_str=msg_str,
   recipient_list=recipient_list,
   attachment_list=attachment_list,
  )

test.config

XXXXX@qq.com,XXXXX@163.com
libvirt.log,qemu.log

注意事项

需进入邮箱设置，开启POP3/SMTP/IMAP。

总结

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