Python script For nic traffic monitoring and python script traffic monitoring

Python script For nic traffic monitoring and python script traffic monitoring

#/Usr/bin/env/python # coding = utf-8import sys, re, time, osmaxdata = 50000 # Unit: KBmemfilename = '/tmp/newnetcardtransdata.txt' netcard = '/proc/net/dev' def checkfile (filename): if OS. path. isfile (filename): pass else: f = open (filename, 'w') f. write ('0') f. close () def get_net_data (): nc = netcard or '/proc/net/dev' fd = open (nc, "r") netcardstatus = False for line in fd. readlines (): if line. find ("eth0")> 0: netcardstatus = True field = line. split () recv = field [0]. split (":") [1] recv = recv or field [1] send = field [8] if not netcardstatus: fd. close () print 'Please setup your netcard 'sys. exit () fd. close () return (float (recv), float (send) def monfirst (filename): nowtime = time. strftime ('% m-% d % H: % m', time. localtime (time. time () sec = time. localtime (). tm_sec if nowtime = '01-01 00:00 ': if sec <10: f = open (filename, 'w') f. write ('0') f. close () def net_loop (): (recv, send) = get_net_data () checkfile (memfilename) monfirst (memfilename) lasttransdaraopen = open (memfilename, 'R') lasttransdata = lasttransdaraopen. readline () lasttransdaraopen. close () totaltrans = int (lasttransdata) or 0 while True: time. sleep (3) (new_recv, new_send) = get_net_data () recvdata = (new_recv-recv)/1024 senddata = (new_send-send)/1024 totaltrans + = int (recvdata) totaltrans + = int (senddata) memw = open (memfilename, 'w') memw. write (str (totaltrans) memw. close () if totaltrans> = maxdata: OS. system ('init 0') if _ name _ = "_ main _": net_loop ()

Run with the ROOT permission. maxdata exceeds the maximum traffic limit. If the system shuts down automatically, you can change the OS. system ('init 0') The command you want is mainly because the current VPS limits traffic and this small script is used.