Python3 enables simple ping monitoring and sending alarm messages

Python3 enables simple ping monitoring and launches alarm messages

1, the implementation of the principle of the result of the ping command to get the packet loss rate and delay, when the packet loss rate and delay reached the preset value, the result as the message content, and send mail

2, The mail is sent with smtplib and email implementation

3, the current script has a small problem is: I open the file, loop read, when the first line, I do ping, get the results, write the results into a file, and determine whether to reach the default value, if reached, the results added to the message content, so always loop, when the file read, and then close the two files, Send the message again. Always learn a bit of a problem, you should save the results to a list, write Once. Forget it, play it like this First.

The code is as Follows:

# -*- coding:utf-8 -*-__author__   =  ' Guozhaohui ' __version__  =   ' 0.0.3 ' __datetime__ =  ' 2016-12-30 03:30:00 ' Import osimport subprocessimport  smtplibimport sysfrom email.mime.multipart import MIMEMultipartfrom  email.mime.base import mimebasefrom email.mime.text import mimetextfrom  email.utils import commaspace,formatdatefrom email import encoders# server[' Name '], server[' user '], server[' passwd ']def send_mail (server, fro, to, subject= "",  text= "",  files=[]):     assert type (server)  == dict     assert type (to)  == list    assert type (files)  ==  list    msg = mimemultipart ()     msg[' from '] =  fro                #  the sender of the message     msg[' Subject ']  = subject         #  subject of mail      msg[' to '] = commaspace.join   # commaspace== ',  '   recipients can be multiple, to is a list      msg[' Date '] = formatdate (localtime=true)  #  send Time      Msg.attach (mimetext (text, ' plain ', ' utf-8 '))     for file in files:           #  Add attachments can be multiple, files is a list, can be empty          part = mimebase (' application ',  ' octet-stream ')  # ' Octet-stream ':  binary data        with open (file, ' RB ')  as f :             part.set_payload (f.read ())       &nBsp;  encoders.encode_base64 (part)         part.add_header (' Content-disposition ',  ' attachment; filename= "%s" '  % os.path.basename (file)          msg.attach (part)     smtp = smtplib. SMTP ()     smtp.connect (server[' name ')  # connect has two parameters, the first is the mail server, the second is the port, and the default is 25     smtp.login (server[' user '], server[' passwd ')  #  username, password      smtp.sendmail (fro, to, msg.as_string ())  #  sender, recipient, Send Message      Smtp.close ()   #  Close connection def ping_test (src,dest):    ping =  Subprocess. Popen ('/bin/ping -i 0.2 -c 4 -q -i  '  + src +  '   '  + dest,                             shell=true,                              stderr=subprocess. pipe,                             stdout=subprocess. PIPE)  #  Execute command     res,err = ping.communicate ()     if  err: sys.exit (err.decode (). strip (' \ n '))     pres = list (res.decode (). Split (' \ n '))     loss = pres[3].split () [5]  #  get packet loss rate      try:        rtt = pres[4].split ('/') [4] #   Get Rtt avg value     except IndexError:         rtt = ""     return loss,rttdef ping_res (file,revfile):    with  Open (file,  ' r ',  encoding= ' Utf-8 ')  as f:         With open (revfile,  ' W ',  encoding= ' utf-8 ')  as f1:             textmail = text =  '%-15s %-15s %-15s %- 5s %-5s \n '  %  (' host ', ' src ', ' dest ', ' loss ', ' RTT ')              f1.write (text)              for line in f:                 host = line.split () [0]                 src = line.split () [1]         &nbSp;       dest = line.split () [2]                 try:                     threshold =  Line.split () [3]                 except IndexError: #  default delay alarm threshold                      threshold = 100                 loss, rtt = ping_test ( Src, dest)                  text =  '%-15s %-15s %-15s %-5s %-5s \n '  %  (host, src,  dest, loss, rtt) &NBsp;               f1.write (text)                 #  Determine if the packet loss rate and delay are up to the preset value                  if float (loss.strip ('% '))  > 10 or float (rtt)  > float (threshold) :                     textmail += text    return textmailif __name__ ==   ' __main__ ':    try:        file =  '/root/ping_test/ping_test.cfg '  #  config file, format (space separated): hostname, source address, destination address, time delay threshold (default Is)          revfile =  '/root/ping_test/ping_test.rev '  #  results file          tExtmail = ping_res (file,revfile)  #  Mail content         #  print (textmail)         server = {' name ': ' Mail.netpas.co ',                    ' user ': ' Guozhaohui ',                    ' passwd ': '}        fro =   ' [email protected] '         to = [' [email  protected] ']        subject =  ' ping_test '          if len (textmail.split (' \ n '))  == 2 : sys.exit ()  #   When only one line exits the program does not send mail         send_mail (server,fro,to,subject,textmail)     except smtPlib. Smtpauthenticationerror:        sys.exit ("Mail Authentication  failed ")     except KeyboardInterrupt:         sys.exit (249)     except Exception as e:         sys.exit (e)

GitHub Address: https://github.com/babyshen/Python/blob/master/monitor.py

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Python3 enables simple ping monitoring and sending alarm messages