本文给大家分享的是Python使用多线程通过ping命令检测服务器的在线状况,给大家了内网和外网的2个例子,有需要的小伙伴可以参考下。
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=$( pingwww.baidu.com-c 2 | grep "icmp_" ); if [ -z $PINGRET ]; then echo "ping fail"; else echo "ping ok"; fi
或者
ping -c 2www.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)
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