Question

我有一个csv文件包含在列中的ips aranged：

10.38.227.233,VLAN-A,23
10.38.227.233,VLAN-XYZ,27
10.38.227.233,VLAN-XZ,27
10,38.169.103,VLAN-ABCD,11
10,38.169.103,VLAN-ABCD,16
10,38.169.103,VLAN-ABD,17

等等

对于每个ip我需要登录到cisco交换机并执行一些命令，用于ip 10.38.227.233（VLAN-A，23 | VLAN-XYZ，27 | VLAN-XZ，27）

所有的ips都有相同的密码，所以我试图只获取一次密码提示并从文件中循环ips。

我是这方面的新手并且已经开始这样但似乎不起作用。现在我开始通过在远程* nix机器上执行简单的 ls 进行一些测试，但它无法正常工作

#!/usr/bin/python
import pexpect
import getpass
import time

iplist = ['10.39.5.41', '10.38.164.103', '10.38.227.229']

for ip in iplist:
                sshCmd = "ssh " + "auto21" + "@" + ip
                #auto21 is a username
                print "Command: " + sshCmd + "\n"

                answer = 'yes/no'
                prompt = 'password:'
                password = getpass.getpass('password:')

                #Sends answer based on target server response / known host
                p = pexpect.spawn(sshCmd)
                i = p.expect([answer,  prompt])
                print i
                if i==0:
                    print 'Sending yes...'
                    p.sendline('yes')
                    p.expect(prompt)
                    print 'Sending password...'
                    p.sendline(password)
                    p.sendline('ls\r')
                    p.expect(pexpect.EOF,timeout=20)
                    print p.before,p.after
                if i==1:
                    print 'Sending password...'
                    p.sendline(password)
                    p.sendline(password)
                    p.sendline('ls\r')
                    p.expect(pexpect.EOF)


                try:
                   p.interact()
                   sys.exit(0)
                except:
                   sys.exit(1)

这就是我得到的：

bash-3.00# python ip.py
Command: ssh auto21@10.39.5.41

password:
1
Sending password...
Traceback (most recent call last):
  File "ip.py", line 35, in <module>
    p.expect(pexpect.EOF,timeout=20)
  File "/G4_Automation/user_mgmt/test/pexpect.py", line 1311, in expect
    return self.expect_list(compiled_pattern_list, timeout, searchwindowsize)
  File "/G4_Automation/user_mgmt/test/pexpect.py", line 1325, in expect_list
    return self.expect_loop(searcher_re(pattern_list), timeout, searchwindowsize)
  File "/G4_Automation/user_mgmt/test/pexpect.py", line 1409, in expect_loop
    raise TIMEOUT (str(e) + '\n' + str(self))
pexpect.TIMEOUT: Timeout exceeded in read_nonblocking().
<pexpect.spawn object at 0x15aef0>
version: 2.3 ($Revision: 399 $)
command: /usr/bin/ssh
args: ['/usr/bin/ssh', 'auto21@10.39.5.41']
searcher: searcher_re:
    0: EOF
buffer (last 100 chars): st login: Fri Feb 22 08:55:05 2013 from p13adv
Testgfs2
-sh-3.2$ ls
-sh-3.2$
-sh-3.2$
before (last 100 chars): st login: Fri Feb 22 08:55:05 2013 from p13adv
Testgfs2
-sh-3.2$ ls
-sh-3.2$
-sh-3.2$
after: <class 'pexpect.TIMEOUT'>
match: None
match_index: None
exitstatus: None
flag_eof: False
pid: 29911
child_fd: 3
closed: False
timeout: 30
delimiter: <class 'pexpect.EOF'>
logfile: None
logfile_read: None
logfile_send: None
maxread: 2000
ignorecase: False
searchwindowsize: None
delaybeforesend: 0.05
delayafterclose: 0.1
delayafterterminate: 0.1

请帮忙

此外，我如何循环文件中的ips并在ssh范围内执行一些命令。

注意：每个IP都有多个VLAN，但每个VLAN只有一个ID（如11,12）

编辑：我需要在ssh范围内运行一些命令

ssh username@hosname "config t
                      int VLAN-A
                      switchport access VLAN-A  23
                      wr
                     #then for next VLAN for the current ip
                      config t
                      int VLAN-A
                      switchport access VLAN-A  23
                      wr
                     #and so on...............                        
                      "

Answer 1

首先，你需要在启动循环之前将getpass行移动到它只需要一次的密码。

你得到的错误是超时的结果，基本上ssh的响应时间太长。

因为你想要做的事情非常简单。 Checkout spur（https://pypi.python.org/pypi/spur）。它有一个非常干净的界面来发送命令。

Answer 2

ssh -o NumberOfPasswordPrompts = 1 -o StrictHostKeyChecking = no -o UserKnownHostsFile = / dev / null -l user [hostname or ip] -p 22

无需发送“是”

从python中的文件循环一些ips？

2 个答案: