Question

我正在尝试运行一个脚本来显示所有配置，并将它们写在juniper和CISCO路由器的文件上。到目前为止，CISCO脚本正在运行，但事情是使用juniper路由器。

for ii in JUNIPER:
    print ii
    cmd2 = 'show configuration | display set'
    conn.connect(ii)
    conn.login(account1)
    conn.execute(cmd2)
    print conn.response
    #filerouter = open(ii, "w")
    #filerouter.write(conn.response)
    #filerouter.close()

获取要查询的设备列表后，我运行了这个但是它被卡住了，好像有一个缓冲区的限制...... -

如果我尝试做同样的命令：
("show configuration | display set | match destination ")
- 我将输出写在文件或屏幕上。

C:\Python27>python.exe C:\User\suserrr\Downloads\shrun.py
'clear' is not recognized as an internal or external command,
operable program or batch file.
Generating configs for ROUTER:  R1.test.site
Generating connect for ROUTER:  R2.test.site
==============
===========
routername
Traceback (most recent call last):
  File "C:\Users\userrr\Downloads\shrun.py", line 40, in <module>
    conn.execute(cmd2)
  File "C:\Python27\lib\site-packages\exscript-2.1.440-py2.7.egg\Exscript\protocols\Protocol.py", line 900, in execute
    return self.expect_prompt()
  File "C:\Python27\lib\site-packages\exscript-2.1.440-py2.7.egg\Exscript\protocols\Protocol.py", line 999, in expect_prompt
    result = self.expect(self.get_prompt())
  File "C:\Python27\lib\site-packages\exscript-2.1.440-py2.7.egg\Exscript\protocols\Protocol.py", line 980, in expect
    result = self._expect(prompt)
  File "C:\Python27\lib\site-packages\exscript-2.1.440-py2.7.egg\Exscript\protocols\Protocol.py", line 956, in _expect
    result = self._domatch(to_regexs(prompt), True)
  File "C:\Python27\lib\site-packages\exscript-2.1.440-py2.7.egg\Exscript\protocols\SSH2.py", line 329, in _domatch
    if not self._fill_buffer():
  File "C:\Python27\lib\site-packages\exscript-2.1.440-py2.7.egg\Exscript\protocols\SSH2.py", line 303, in _fill_buffer
    raise TimeoutException(error)
Exscript.protocols.Exception.TimeoutException: Timeout while waiting for response from device

=========== ====问题 - 如何让脚本运行并提供命令的输出：show configuration | display set第二张图片显示我得到的错误，但如果我将命令更改为：show configuration | display set | match description我得到要求的信息。我错过了在模块中添加一些内容以便exscript / python避免超时吗？

Answer 1

默认情况下，JunOS会对任何命令返回的冗长输出进行分页。可能发生的事情是，您正在连接的Juniper设备正在对show configuration | display set命令的输出进行分页，并且Exscript正在超时，因为设备正在等待用户输入以继续分页命令的输出，而不是返回Exscript识别的提示。

我会做出以下修改：

for ii in JUNIPER:
    print ii
    cmd2 = 'show configuration | display set | no-more'
    conn.connect(ii)
    conn.login(account1)
    conn.execute(cmd2)
    print conn.response

这将禁用该特定命令的输出分页，并应立即返回到提示符并允许Exscript将输出返回给您。为了更好的衡量，我还在我的命令中添加回车符，即：

cmd2 = 'show configuration | display set | no-more\r'

但是，执行上述操作的有用性是值得商榷的，就好像我没记错execute()方法应该为你做这件事。

Answer 2

为了使用python处理Junos设备，我建议你使用PyEZ - post

from jnpr.junos import Device
from lxml import etree

dev = Device('hostname', user='username', password='Password123')
dev.open()

cnf = dev.rpc.get_config()    # similar to 'show configuration | no-more' on cli
print (etree.tounicode(cnf))

dev.close()

Answer 3

我使用带有JSON的PyEZ使用此脚本来使用多个IP地址。

from jnpr.junos import Device
from lxml import etree
import json


config_file = open('config.json')
config = json.load(config_file)
config_file.close()


for host in config['ip']:

    dev = Device(host=host, user=config['username'], 
    password=config['password'], port=22)
    dev.open()
    data = dev.rpc.get_config(options={'format':'set'})
    file_name = dev.facts['fqdn']
    print(etree.tostring(data))
    dev.close()

    f = open(file_name + '.txt', 'w')
    f.write(etree.tostring(data))
    f.close()

JSON文件如下所示：

   {
  "username": "user",
  "password": "password",
  "ip": [
             "10.255.6.100",
             "10.255.6.101",
             "10.255.6.102",
             "10.255.6.103",
             "10.255.6.104"
           ]
}

Python Exscript - JunOS

3 个答案: