python脚本监控logstash进程并邮件告警的实现方法

# coding=utf-8
#!/usr/bin/env python
_author_ = 'liuzc'
import os
import datetime
import smtplib
from email.mime.text import MIMEText
from email.header import Header
# 定义日志输出文件
log = "/home/data/liuzc/check_ps/logstash_process.log"
ipAndUrlList = [
  ["log@10.10.10.10","aiu-service-agent.conf"]
]
def checkPS():
 beginTime = datetime.datetime.now()
 print("开始检查进程。。。时间为：%s" % beginTime)
 for ipAndUrl in ipAndUrlList:
  ip = ipAndUrl[0]
  configName = ipAndUrl[1]
  alist = ip.split("@")
  username = alist[0]
  #将进程信息写入log文件
  os.system("ssh %s ps -ef |grep %s |grep -v 'grep'> %s" %(ip,configName,log))
  #判断文件大小，当logstash没有运行时上一步写入log的内容为空
  if not(os.path.getsize(log)):
   # 重启进程
   print("ip为%s,配置文件名称为 %s 不在进程中，正在重启进程......" %(ip,configName))
   # os.system('ssh %s /home/%s/elk/logstash/bin/logstash -f %s &'%(ip,username,url))
   os.system('ssh %s /home/%s/elk/logstash/bin/logstash -f /home/%s/elk/logstash/etc/%s &' % (ip, username,username, configName))
   print("重启进程成功，开始发送邮件")
   # 发送邮件
   sendMail(ip,configName)
 endTime = datetime.datetime.now()
 print("检查进程结束。。。时间为：%s" % endTime)
 print("=============================================================================")
 
def sendMail(ip,configName):
 # 当前时间
 now = datetime.datetime.now()
 # 第三方 SMTP 服务
 mail_host = "mail.qq.com" # 设置服务器
 mail_user = "aa@qq.com" # 用户名
 mail_pass = "deretrgt4556h" # 口令
 sender = 'aa@qq.com'
 receivers = ['bb@qq.com','cc@qq.com','dd@qq.com'] # 接收邮件，可设置为你的QQ邮箱或者其他邮箱
 message = MIMEText('logstash进程异常,但已自动重启...服务器为 %s , 配置文件为 %s ， 时间为 %s ' %(ip,configName,now), 'plain', 'utf-8')
 message['From'] = Header("logstash_ps", 'utf-8')
 message['To'] = Header("users", 'utf-8')
 subject = 'logstash进程异常告警!!!'
 message['Subject'] = Header(subject, 'utf-8')
 try:
  smtpObj = smtplib.SMTP()
  smtpObj.connect(mail_host, 25) # 25 为 SMTP 端口号
  smtpObj.login(mail_user, mail_pass)
  smtpObj.sendmail(sender, receivers, message.as_string())
  print ("邮件发送成功！！！")
 except smtplib.SMTPException:
  print("Error: 邮件发送失败。。。")
 
if __name__ == '__main__':
 while True:
  try:
   checkPS()
  except Exception as e:
   print('Error:', e)