Python监控主机是否存活,并发报警邮件

利用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...
本文出自 “李振良的技术博客” 博客，请务必保留此出处http://lizhenliang.blog.51cto.com/7876557/1649664