Python监控主机是否存活并以邮件报警

利用python/' target='_blank'>python写了简单测试主机是否存活脚本，此脚本不适于线上使用，因为网络延迟、丢包现象会造成误报邮件，那么后续会更新判断三次ping不通后再发报警邮件，并启用多线程处理。

#!/usr/bin/env Python # coding:UTF-8 import time import pexpect import smtplib from email.mime.text import MIMEText mail_host = "smtp.163.com"    #定义smtp服务器 mail_to = "baojingtongzhi@163.com" #邮件收件人 mail_from = "monitor@163.com"   #邮件发件人 mail_pass = "123456"      #邮件发件人邮箱密码 while True:   def Mail(error_ip):     date = time.strftime('%Y-%m-%d %H:%M:%S')     msg = MIMEText("%s Ping %s failed from 255.252." % (date, error_ip))     msg['Subject'] = "Ping %s failed." % error_ip  #定义邮件主题     msg['From'] = mail_from     msg['To'] = mail_to     try:       s = smtplib.SMTP()        #创建一个SMTP()对象       s.connect(mail_host, "25")      #通过connect方法连接smtp主机       s.starttls()          #启动安全传输模式       s.login(mail_from,mail_pass)     #邮箱账户登录认证       s.sendmail(mail_from, mail_to, msg.as_string()) #邮件发送       s.quit()   #断开smtp连接     except Exception, e:       print str(e)   ip_list = ['192.168.18.10',     '192.168.18.11',     '192.168.18.12']   for ip in ip_list:     ping = pexpect.spawn('ping -c 1 %s' % ip)     check = ping.expect([pexpect.TIMEOUT,"1 packets transmitted, 1 received, 0% packet loss"],2)  #2代表超时时间     if check == 0:       Mail(ip)       print "Ping %s failed,Have email." % ip     if check == 1:       print "Ping %s successful." % ip   print "Sleep 10s..."  time.sleep(10)#直接运行# python ping.py Ping 192.168.18.10 successful.Ping 192.168.18.11 successful.Ping 192.168.18.12 successful.Sleep 10s...

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