Book Image

Mastering Python Networking - Third Edition

By : Eric Chou
Book Image

Mastering Python Networking - Third 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 Mastering Python Networking, Third edition, 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 new edition is completely revised and updated to work with Python 3. In addition to new chapters on network data analysis with ELK stack (Elasticsearch, Logstash, Kibana, and Beats) and Azure Cloud Networking, it includes updates on using newer libraries such as pyATS and Nornir, as well as Ansible 2.8. Each chapter is updated with the latest libraries with working examples to ensure compatibility and understanding of the concepts. Starting with a basic overview of Python, the book teaches you how it can interact with both legacy and API-enabled network devices. You will learn to leverage high-level Python packages and frameworks to perform network automation tasks, monitoring, management, and enhanced network security followed by Azure and AWS Cloud networking. Finally, you will use Jenkins for continuous integration as well as testing tools to verify your network.
Table of Contents (18 chapters)
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Ansible networking modules

Ansible was originally made for managing nodes with full operating systems such as Linux and Windows before it was extended to support network equipment. You may have already noticed the subtle differences in playbooks that we have used so far for network devices, such as the lines of gather_facts: false and connection: local; we will take a closer look at the differences in the following sections.

Ansible provides nicely written documentation on 'How Network Automation is Different':

Local connections and facts

Ansible modules are Python code that's executed on the remote host by default. Because of the fact that most network equipment does not expose Python directly, or it simply does not contain Python, we are almost always executing the playbook locally on the control node. This means that the playbook is interpreted...