python实现系统状态监测和故障转移实例方法

代码如下:

#coding: utf-8import socketimport selectimport timeimport osimport 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

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

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