python实现监控某个服务 服务崩溃即发送邮件报告

#-*- encoding:utf-8 -*- 
#!/usr/bin/env python 
# name IsOpen.py 
import os 
import socket 
import time 
import smtplib  
from email.mime.text import MIMEText 
 
mailto_list=["872766492@qq.com"]  
mail_host="smtp.qq.com" #设置服务器 
mail_user="1124794084"  #用户名 
mail_pass="密码"  #口令  
mail_postfix="qq.com" #发件箱的后缀 
  
def send_mail(to_list,sub,content): #to_list：收件人；sub：主题；content：邮件内容 
  me="升级服务器报告"+"<"+mail_user+"@"+mail_postfix+">"  #这里的hello可以任意设置，收到信后，将按照设置显示 
  msg = MIMEText(content,_subtype='html',_charset='gb2312')  #创建一个实例，这里设置为html格式邮件 
  msg['Subject'] = sub  #设置主题 
  msg['From'] = me  
  msg['To'] = ";".join(to_list)  
  try:  
    s = smtplib.SMTP()  
    s.connect(mail_host) #连接smtp服务器 
    s.login(mail_user,mail_pass) #登陆服务器 
    s.sendmail(me, to_list, msg.as_string()) #发送邮件 
    s.close()  
    return True  
  except Exception, e:  
    print str(e)  
    return False 
 
 
def IsOpen(ip,port,flag): 
  s = socket.socket(socket.AF_INET,socket.SOCK_STREAM) 
  try: 
    s.connect((ip,int(port))) 
    s.shutdown(2) 
    print '%d is open' % port 
    return True 
  except: 
    print '%d is down' % port  
    return False 
   
if __name__ == '__main__': 
  while(1>0): 
    flag=1 
    IsOpen('127.0.0.1',9906) 
    time.sleep(60) 
    flag=IsOpen('127.0.0.1',9906) 
    print flag 
    if flag==False: 
      send_mail(mailto_list,"XX升级服务器监测异常","error") 
      time.sleep(1800) 
 
#设置一分钟监测一次，如果发现端口9906消失则发送邮件报告，设置延迟为半小时，避免一直重复发送邮件