我正在尝试将SSH连接到一堆路由器中,并从每个路由器中获取一些信息。有些路由器IP是无效的,因为它们是从环路中获取的。对于不存在的那些,我(显然)收到一个socket.timeout错误,并且脚本此时退出执行。我希望python忽略此错误,并继续进行其余的迭代。我已经包含了except/pass/continue命令,但是它们似乎以某种方式并没有完成工作,而我仍然收到socket.timeout错误并退出了脚本:
import paramiko
import socket
import subprocess
import time
site = ['sao2','mia2','par2','scs2','sin4','sjl1','syd3','tok2','tor1','wdc1','akl1','chc1','chi2','cop2','dal1','fra2']
csr_hostname = 'csr_1'
csr_pass = str('*******')
username = str('test_user')
csrcmd = 'sh ver \n'
f = open ("version_output.txt", 'r+')
#*********************************************************************
for DC in site :
y = str(DC)
mcp = socket.gethostbyname(y)
mcpip = mcp.split('.')
mcpip2 = int(mcpip[0])
mcpip3 = int(mcpip[1])
mcpip4 = int(mcpip[2])
print (DC + ":")
f.write('\n')
f.write(DC)
f.write('\n=====\n')
for i in range(5,33):
x=37+(2*i)
mcpcsr = (str(mcpip2) + ('.') + str(mcpip3)+ ('.') + str(mcpip4)+ ('.') + str(x))
fqdn1=(str(i)+'-01.'+str(DC))
print i
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(mcpcsr, username=username, password=csr_pass, look_for_keys = False, allow_agent = False, timeout=10)
router_channel = ssh.invoke_shell()
router_channel.settimeout(2)
try :
buff = ''
router_channel.send(csrcmd)
time.sleep(1)
buff = router_channel.recv(99999)
for item in buff.split("\n"):
if "Cisco IOS XE Software, Version" in item :
csrver = (fqdn1 + " : " + item.strip())
if "Cisco IOS Software" in item :
csrver1 = (item.strip())
print csrver
print csrver1
f.write(csrver)
f.write('\n')
f.write(csrver1)
f.write('\n')
fqdn1 = ''
ssh.close()
#*********************************************************************
except socket.timeout:
print ("bla bla")
pass
continue
except socket.error :
print ("bla bla")
pass
continue
except paramiko.SSHException, socket.error :
print ("bla bla")
pass
continue
except Exception :
print ("bla bla")
pass
continue
#*********************************************************************
输出 :
Traceback (most recent call last):
File "csrnum.py", line 36, in ?
ssh.connect(mcpcsr, username=username, password=csr_pass, look_for_keys = False, allow_agent = False, timeout=10)
File "/usr/lib/python2.4/site-packages/paramiko/client.py", line 291, in connect
sock.connect(addr)
File "<string>", line 1, in connect
socket.timeout: timed out
任何对此的见解将不胜感激,并感谢!
最佳答案
弄清楚了!异常(exception)设置为缩进多于尝试ssh连接的缩进。对代码进行了少量更改以适应此要求,并且异常按预期工作!