需要ping一个网段所有机器的在线情况,shell脚步运行时间太长,用python写个多线程ping吧,代码如下:
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#!/usr/bin/python #coding=utf-8 ''' Created on 2015-8-4 @author: Administrator ''' import threading,subprocess from time import ctime,sleep,time import Queue queue = Queue.Queue() class ThreadUrl(threading.Thread): def __init__( self ,queue): threading.Thread.__init__( self ) self .queue = queue def run( self ): while True : host = self .queue.get() ret = subprocess.call( 'ping -c 1 -w 1 ' + host,shell = True ,stdout = open ( '/dev/null' , 'w' )) if ret: print "%s is down" % host else : print "%s is up" % host self .queue.task_done() def main(): for i in range ( 100 ): t = ThreadUrl(queue) t.setDaemon( True ) t.start() for host in b: queue.put(host) queue.join() a = [] with open ( 'ip.txt' ) as f: for line in f.readlines(): a.append(line.split()[ 0 ]) #print a b = [ '192.168.3.' + str (x) for x in range ( 1 , 254 )] #ping 192.168.3 网段 start = time() main() print "Elasped Time:%s" % (time() - start) #t2=threading.Thread(target=move,args=('fff',)) #threads.append(t2) ''' for i in a: print ctime() ping(i) sleep(1) if __name__ == '__main__': for t in range(len(a)): #t.setDaemon(True) threads[t].start() #t.join() print "All over %s" % ctime() ''' |
效果如下:
平一个网段只要2.7s左右,够快!!!
再给大家分享一个检测外网服务器的方法及代码
经常使用python检测服务器是否能ping通, 程序是否正常运行(检测对应的端口是否正常)
以前使用shell脚本的写法如下:
PINGRET=$( ping www.baidu.com -c 2 | grep "icmp_" ); if [ -z $PINGRET ]; then echo "ping fail"; else echo "ping ok"; fi
或者
ping -c 2 www.baidu.com|grep "icmp_" && echo 'ping ok' || echo 'ping fail'
代码示例:
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#!/usr/bin/python # encoding=utf-8 # Filename: net_is_normal.py import os import socket import subprocess #判断网络是否正常 server = 'www.baidu.com' #检测服务器是否能ping通,在程序运行时,会在标准输出中显示命令的运行信息 def pingServer(server): result = os.system( 'ping ' + server + ' -c 2' ) if result: print '服务器%s ping fail' % server else : print '服务器%s ping ok' % server print result #把程序输出定位到/dev/null,否则会在程序运行时会在标准输出中显示命令的运行信息 def pingServerCall(server): fnull = open (os.devnull, 'w' ) result = subprocess.call( 'ping ' + server + ' -c 2' , shell = True , stdout = fnull, stderr = fnull) if result: print '服务器%s ping fail' % server else : print '服务器%s ping ok' % server fnull.close() #可用于检测程序是否正常,如检测redis是否正常,即检测redis的6379端口是否正常 #检测ssh是否正常,即检测ssh的22端口是否正常 def check_aliveness(ip, port): sk = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sk.settimeout( 1 ) try : sk.connect((ip,port)) print 'server %s %d service is OK!' % (ip,port) return True except Exception: print 'server %s %d service is NOT OK!' % (ip,port) return False finally : sk.close() return False if __name__ = = '__main__' : pingServerCall(server) pingServer(server) check_aliveness( '192.168.230.128' , 6379 ) |