我编写了这个脚本,将更新文件复制到该领域的数千个客户端。除了客户端超时时,它工作正常。我正在捕获异常,但它会杀死我的脚本。希望了解如何调整此脚本以防止它死亡的一些建议。下面是异常的输出和杀死脚本的错误。
(' ABCD SAT6','超时')[Errno 113]无主机路线
追踪(最近一次通话): 文件" StackUpdateLocoImage.py",第48行,in pool.map(worker,infile) 文件" /usr/lib64/python2.6/multiprocessing/pool.py",第148行,在地图中 return self.map_async(func,iterable,chunksize).get() 文件" /usr/lib64/python2.6/multiprocessing/pool.py" ;,第422行,获取 提高self._value AttributeError:' NoneType'对象没有属性' open_sftp_client'
#!/usr/bin/python
import paramiko, os, string, threading
import socket
import sys
import logging
import multiprocessing
##Python Logging##
LOG_FILENAME = 'updateLocos.out'
logging.basicConfig(filename=LOG_FILENAME, level=logging.DEBUG,)
## Paramiko Logging##
paramiko.util.log_to_file("Paramiko_Connections.log")
def worker(line):
locoid = line.split()
try:
if locoid[0] == 'ABCD' :
locoip = locoid[4]
##Start SFTP
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(locoip, username='user', password='password', timeout=3.0)
except paramiko.AuthenticationException,e:
print ('ABCD ' + locoid[1], 'Auth Error: ',e)
#exit()
except paramiko.SSHException,e:
print "Connection Error: ",e
#exit()
except socket.error,e:
print ('ABCD ' + locoid[1], 'Timed Out'),e
#exit()
filepath = '/usr/local/bin/scripts/update3.2.2.tar.gz'
localpath = '/root/update3.2.2.tar.gz'
sftp = ssh.open_sftp()
sftp.put(filepath, localpath)
sftp.close()
ssh.close()
## set up processing pool
pool = multiprocessing.Pool()
with open('hostslists.txt') as infile:
pool.map(worker, infile)
pool.close()
pool.join()
答案 0 :(得分:2)
您没有发现此错误:
AttributeError: 'NoneType' object has no attribute 'open_sftp_client'
问题是你有一堆除了但是你继续执行就像没有发生任何事情,当它到达这一行时:
sftp = ssh.open_sftp()
变量ssh
为None
。
因此请取消注释exit()
,或者将其更改为return
。