Python监控主机是否存活,并发报警邮件

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1.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-
import time
import pexpect
import smtplib
from email.mime.text import MIMETextmail_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 = "" #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, "") #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代表超时时间
if check == :
Mail(ip)
print "Ping %s failed,Have email." % ip
if check == :
print "Ping %s successful." % ip
print "Sleep 10s..."
time.sleep()