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ncclient: Python library for NETCONF clients

ncclient is a Python library that facilitates client-side scripting and application development around the NETCONF protocol. ncclient was developed by Shikar Bhushan. It is now maintained by Leonidas Poulopoulos (@leopoul)

Docs: http://ncclient.readthedocs.org

Requirements:

  • Python 2.6 <= version < 3.0
  • setuptools 0.6+
  • Paramiko 1.7+
  • lxml 3.0+
  • libxml2
  • libxslt

If you are on Debian/Ubuntu install the following libs (via aptitude or apt-get):

  • libxml2-dev
  • libxslt1-dev

Installation:

[ncclient] $ sudo python setup.py install

or via pip:

pip install ncclient

Examples:

[ncclient] $ python examples/juniper/*.py

Usage

Get device running config

Use either an interactive Python console (ipython) or integrate the following in your code:

from ncclient import manager

with manager.connect(host=host, port=830, username=user, hostkey_verify=False) as m:
    c = m.get_config(source='running').data_xml
    with open("%s.xml" % host, 'w') as f:
        f.write(c)

As of 0.4.1 ncclient integrates Juniper's and Cisco's forks, lots of new concepts have been introduced that ease management of Juniper and Cisco devices respectively. The biggest change is the introduction of device handlers in connection paramms. For example to invoke Juniper's functions annd params one has to re-write the above with device_params={'name':'junos'}:

from ncclient import manager

with manager.connect(host=host, port=830, username=user, hostkey_verify=False, device_params={'name':'junos'}) as m:
    c = m.get_config(source='running').data_xml
    with open("%s.xml" % host, 'w') as f:
        f.write(c)

Device handlers are easy to implement and prove to be futureproof.

Supported device handlers

  • Juniper: device_params={'name':'junos'}
  • Cisco CSR: device_params={'name':'csr'}
  • Cisco Nexus: device_params={'name':'nexus'}
  • Huawei: device_params={'name':'huawei'}

Changes | brief

v0.4.3

  • Nexus exec_command operation
  • Allow specifying multiple cmd elements in Cisco Nexus
  • Update rpc for nested rpc-errors
  • Prevent race condition in threading
  • Prevent hanging in session close

v0.4.2

  • Support for paramiko ProxyCommand via ~/.ssh/config parsing
  • Add Juniper-specific commit operations
  • Add Huawei devices support
  • Tests/Travis support
  • ioproc transport support for Juniper devices
  • Update Cisco CSR device handler
  • Many minor and major fixes

v0.4.1

  • Switch between replies if custom handler is found
  • Add Juniper, Cisco and default device handlers
  • Allow preferred SSH subsystem name in device params
  • Allow iteration over multiple SSH subsystem names.

Acknowledgements