复制代码 代码如下:

coding: utf-8

import socket
import select
import time
import os
import threading

def ser():
s = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
s.bind(("",43244))
while 1:
infds,outfds,errfds = select.select([s],[],[],5)
if infds:
sms = s.recv(1024)
if sms=="alived":
print "peer is alived"
else:
print "Can't hear peer!"
os.system("./failover.sh")

def clt():
while 1:
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.connect(('192.168.10.1', 43244))
sock.send("alived")
time.sleep(2)

if name=="main":
ser=threading.Thread(target=ser)
clt=threading.Thread(target=clt)
ser.start()
clt.start()
ser.join()
clt.join()

failover.sh

复制代码 代码如下:

!/bin/bash

vip=8.8.8.8

vip_local=ifconfig |grep -A 1 "eth0:0" |awk '/inet addr/{print $2}'|cut -d ":" -f2

if [ ! $vip_local ];then ifconfig eth0:0 $vip netmask 255.255.255.0 up;fi