Pool多进程示例

　　利用Pool类多进程实现批量主机管理

  1 #!/usr/bin/python
  2 # -*- coding: UTF-8 -*-
  3 # Author:       standby
  4 # Time:         2017-03-02
  5 # Description:  Achieve the Multiple Processes(High Concurrent) to execute single or multiple commands functions by pool class of Python Lang.
  6 
  7 import time
  8 import commands, subprocess
  9 import os, re, sys
 10 import paramiko
 11 from  multiprocessing import Pool
 12 
 13 # print color
 14 COLOR_PINK    = '\033[95m'
 15 COLOR_BLUE    = '\033[94m'
 16 COLOR_GREEN   = '\033[92m'
 17 COLOR_YELLOW  = '\033[93m'
 18 COLOR_RED     = '\033[91m'
 19 COLOR_DEFAULT = '\033[0m'
 20 
 21 def Check_IP(ip):
 22     ip_str = r'^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$'
 23     if re.match(ip_str, ip):
 24         return True
 25     else:
 26         return False
 27 
 28 def Get_IPS(ipfile):
 29     '''Generate ip list.'''
 30     ips = []
 31     with open(ipfile) as iplist:
 32         content = iplist.readlines()
 33         for line in content:
 34             if line.startswith('#'):
 35                 continue
 36             elif Check_IP(line.strip('\n')):
 37                 ips.append(line.strip('\n'))
 38             else:
 39                 print '%s is invalid ip address!' % line.strip('\n')
 40                 continue
 41     return ips
 42 
 43 def concurrentFunc(ip, cmd):
 44     '''single cmd to exec...'''
 45     #RET = subprocess.check_output("ssh root@%s 2> /dev/null cmd" % ip, shell = True)
 46     #status, output = commands.getstatusoutput("ssh root@%s 2> /dev/null cmd" % ip)
 47     #status, output = commands.getstatusoutput("ssh root@%s 2> /dev/null cmd
" % ip)
 48     #return ip+": "+output+", status: "+bytes(status)
 49     #return ip+": "+RET
 50     '''multiple cmd to exec...'''
 51     PORT = 22
 52     USER = "root"
 53     KEY = "/path/known_hosts"
 54     ssh = paramiko.SSHClient()
 55     try:
 56         ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
 57         ssh.connect(ip, PORT, USER, KEY, timeout=10)
 58     except paramiko.AuthenticationException:
 59         print ip+" ssh timeout, continue..."
 60         return "SSH ERROR, exit..."
 61     output = []
 62     output.append(ip)
 63     for m in cmd:
 64         stdin, stdout, stderr = ssh.exec_command(m)
 65         output.append(stdout.readlines())
 66     return output
 67 
 68 def callBackFunc(ret):
 69     print "This is callback func of %s" % ret[0]
 70 
 71 def output(res_list):
 72     print "%s=================RESULT====================%s" % (COLOR_GREEN, COLOR_DEFAULT)
 73     for res in res_list:
 74         try:
 75             print res.get()[0] + " -> " + ''.join(res.get()[1])
 76         except Exception, e:
 77             print "%sOUTPUT ERROR: %s %s" % (COLOR_YELLOW, e, COLOR_DEFAULT)
 78             continue
 79 
 80 if __name__ == '__main__':
 81     ipfile = sys.argv[1]
 82     if os.path.isfile(ipfile):
 83         ips = Get_IPS(ipfile)
 84     elif Check_IP(ipfile):
 85         ips = [sys.argv[1]]
 86     else:
 87         print '%s is invalid ip address!' % ipfile
 88         sys.exit(1)
 89 
 90     res_list = []
 91     #cmd = ['cmd1', 'cmd2']
 92     cmd = ['cmd']
 93     t_start=time.time()
 94     #pool = Pool(32)
 95     pool = Pool(10)
 96     for ip in ips:
 97     #维持执行的进程总数为processes，当一个进程执行完毕后会添加新的进程进去
 98         res = pool.apply_async(func=concurrentFunc, args=(ip, cmd,), callback=callBackFunc)
 99         res_list.append(res)
100     pool.close()
101     pool.join()
102     pool.terminate()
103     output(res_list)
104     t_end=time.time()
105     t=t_end-t_start
106     print '%sDealt %d, used time is :%s.%s' % (COLOR_BLUE, len(res_list), t, COLOR_DEFAULT)

 

posted @ 2017-05-01 13:11  青山应回首  阅读(345)  评论(0)  编辑  收藏  举报