guestshell C9500 cli module NameError: global name 'log' is not defined

[Alex Willoughby]

Hi all,

first time using iox guestshell and I've just gone into python and tried to use the cli module and am being returned the error below: I'm using 16.10.1 on a catalyst 9500 has anyone come across this before and know the fix?

[guestshell@guestshell ~]$ python
Python 2.7.5 (default, Apr 11 2018, 07:36:10)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-28)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from cli import *
>>> ios_version = cli("show version")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/site-packages/cli/__init__.py", line 253, in cli
    response = pnp.listener.cli_exec_request(command)
  File "/usr/lib/python2.7/site-packages/pnp/_pnp.py", line 511, in cli_exec_request
    log(PNP_LOG_LEVEL_ERROR)
NameError: global name 'log' is not defined
>>>

[Alex Willoughby · Accepted solution]

Anyone coming across this issue, it was resolved by enabling http server on the switch

conf t
ip http server

[carlosormon]

Hi,

Just a doubt, instead http can i have https?

I mean just for security policies.

[ktuffent]

Carlosormon,

If you want to use https, I recommend using "ip http secure-server" and it might be worth looking into "ip http authentication local" or something similar before secure-server command. Here is a link to a guide for more information.

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/https/command/nm-https-cr-book/nm-https-cr-cl-sh.html

Regards,
Kyle

[carlosormon]

Hi ktuffent ,

Thank you so much for your help!!

I tried using this configuration. 

ip http authentication local

ip http secure-server

But it doesn't work. 

#  guestshell run python /flash/BACKUPS.py
Traceback (most recent call last):
  File "/flash/BACKUPS.py", line 13, in <module>
    print cli ('write')
  File "/usr/lib/python2.7/site-packages/cli/__init__.py", line 253, in cli
    response = pnp.listener.cli_exec_request(command)
  File "/usr/lib/python2.7/site-packages/pnp/_pnp.py", line 502, in cli_exec_request
    raise PnPParseError(str(perr))
pnp._pnp.PnPParseError: ParseError: Response is not xml parsable. mismatched tag: line 6, column 2

I mean when i use ip http server, it works.!! but we need to be secure and use https instead http.

Thank you very much!

[shobansa]

Guestshell needs the http server to be configured to communicate with IOS and execute the cli commands. Thats is why the error is seen when http server is not configured.

Currently https is not supported for communication