Book Image

Mastering Python Networking - Second Edition

By : Eric Chou
Book Image

Mastering Python Networking - Second Edition

By: Eric Chou

Overview of this book

Networks in your infrastructure set the foundation for how your application can be deployed, maintained, and serviced. Python is the ideal language for network engineers to explore tools that were previously available to systems engineers and application developers. In this second edition of Mastering Python Networking, you’ll embark on a Python-based journey to transition from traditional network engineers to network developers ready for the next-generation of networks. This book begins by reviewing the basics of Python and teaches you how Python can interact with both legacy and API-enabled network devices. As you make your way through the chapters, you will then learn to leverage high-level Python packages and frameworks to perform network engineering tasks for automation, monitoring, management, and enhanced security. In the concluding chapters, you will use Jenkins for continuous network integration as well as testing tools to verify your network. By the end of this book, you will be able to perform all networking tasks with ease using Python.
Table of Contents (15 chapters)

The Ansible Juniper example

The Ansible Juniper module requires the Juniper PyEZ package and NETCONF. If you have been following the API example in Chapter 3, APIs and Intent-Driven Networking, you are good to go. If not, refer back to that section for installation instructions as well as some test script to make sure PyEZ works. The Python package called jxmlease is also required:

$ sudo pip install jxmlease

In the host file, we will specify the device and connection variables:

[junos_devices]
J1 ansible_host=192.168.24.252

[junos_devices:vars]
username=juniper
password=juniper!

In our Juniper playbook, we will use the junos_facts module to gather basic facts for the device. This module is equivalent to the setup module and will come in handy if we need to take action depending on the returned value. Note the different value of transport and port in the example here:

    ---
...