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:
#!/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:
#!/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)