Python3 实现简易ping监控并发送报警邮件
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Python3 实现简易ping监控并发动报警邮件
1、实现原理通过ping命令结果获取丢包率和延时情况,当丢包率和延时达到预设值时,将结果作为邮件内容,并发送邮件
2、邮件是用smtplib和email实现发送的
3、目前脚本有个小问题就是:我打开文件,循环读,当读第一行时,我执行ping,获取结果,把结果写到一个文件里,同时判断是否达到预设值,如果达到,就把结果加到邮件内容,就这样一直循环,当把文件读完,然后关闭这两个文件,再发送邮件。总学得有点问题,应该将结果存到一个列表,一次性写入。算了就先这样玩吧。
代码如下:
# -*- coding:utf-8 -*- __author__ = ‘GuoZhaoHui‘ __version__ = ‘0.0.3‘ __datetime__ = ‘2016-12-30 03:30:00‘ import os import subprocess import smtplib import sys from email.mime.multipart import MIMEMultipart from email.mime.base import MIMEBase from email.mime.text import MIMEText from email.utils import COMMASPACE,formatdate from email import encoders # server[‘name‘], server[‘user‘], server[‘passwd‘] def send_mail(server, fro, to, subject="", text="", files=[]): assert type(server) == dict assert type(to) == list assert type(files) == list msg = MIMEMultipart() msg[‘From‘] = fro # 邮件的发件人 msg[‘Subject‘] = subject # 邮件的主题 msg[‘To‘] = COMMASPACE.join(to) # COMMASPACE==‘, ‘ 收件人可以是多个,to是一个列表 msg[‘Date‘] = formatdate(localtime=True) # 发送时间 msg.attach(MIMEText(text,‘plain‘,‘utf-8‘)) for file in files: # 添加附件可以是多个,files是一个列表,可以为空 part = MIMEBase(‘application‘, ‘octet-stream‘) #‘octet-stream‘: binary data with open(file,‘rb‘) as f: part.set_payload(f.read()) encoders.encode_base64(part) part.add_header(‘Content-Disposition‘, ‘attachment; filename="%s"‘ % os.path.basename(file)) msg.attach(part) smtp = smtplib.SMTP() smtp.connect(server[‘name‘]) # connect有两个参数,第一个为邮件服务器,第二个为端口,默认是25 smtp.login(server[‘user‘], server[‘passwd‘]) # 用户名,密码 smtp.sendmail(fro, to, msg.as_string()) # 发件人,收件人,发送信息 smtp.close() # 关闭连接 def ping_test(src,dest): ping = subprocess.Popen(‘/bin/ping -i 0.2 -c 4 -q -I ‘ + src + ‘ ‘ + dest, shell=True, stderr=subprocess.PIPE, stdout=subprocess.PIPE) # 执行命令 res,err = ping.communicate() if err: sys.exit(err.decode().strip(‘\n‘)) pres = list(res.decode().split(‘\n‘)) loss = pres[3].split()[5] # 获取丢包率 try: rtt = pres[4].split(‘/‘)[4] # 获取rtt avg值 except IndexError: rtt = "" return loss,rtt def ping_res(file,revfile): with open(file, ‘r‘, encoding=‘utf-8‘) as f: with open(revfile, ‘w‘, encoding=‘utf-8‘) as f1: textmail = text = ‘%-15s %-15s %-15s %-5s %-5s \n‘ % (‘host‘,‘src‘,‘dest‘,‘loss‘,‘rtt‘) f1.write(text) for line in f: host = line.split()[0] src = line.split()[1] dest = line.split()[2] try: threshold = line.split()[3] except IndexError: # 默认延时报警阀值 threshold = 100 loss, rtt = ping_test(src, dest) text = ‘%-15s %-15s %-15s %-5s %-5s \n‘ % (host, src, dest, loss, rtt) f1.write(text) # 判断丢包率和延时是不是达到预设值 if float(loss.strip(‘%‘)) > 10 or float(rtt) > float(threshold): textmail += text return textmail if __name__ == ‘__main__‘: try: file = ‘/root/ping_test/ping_test.cfg‘ # 配置文件,格式(空格隔开):主机名,源地址,目标地址,延时阀值(默认是100) revfile = ‘/root/ping_test/ping_test.rev‘ # 结果文件 textmail = ping_res(file,revfile) # 邮件内容 # print(textmail) server = {‘name‘:‘mail.netpas.co‘, ‘user‘:‘guozhaohui‘, ‘passwd‘:‘‘} fro = ‘[email protected]‘ to = [‘[email protected]‘] subject = ‘ping_test‘ if len(textmail.split(‘\n‘)) == 2 : sys.exit() # 当只有一行时退出程序不发送邮件 send_mail(server,fro,to,subject,textmail) except smtplib.SMTPAuthenticationError: sys.exit("Mail Authentication Failed") except KeyboardInterrupt: sys.exit(249) except Exception as e: sys.exit(e)
github地址:https://github.com/babyshen/Python/blob/master/monitor.py
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