Book Image

Python Network Programming

By : Abhishek Ratan, Eric Chou, Pradeeban Kathiravelu, Dr. M. O. Faruque Sarker
Book Image

Python Network Programming

By: Abhishek Ratan, Eric Chou, Pradeeban Kathiravelu, Dr. M. O. Faruque Sarker

Overview of this book

This Learning Path highlights major aspects of Python network programming such as writing simple networking clients, creating and deploying SDN and NFV systems, and extending your network with Mininet. You’ll also learn how to automate legacy and the latest network devices. As you progress through the chapters, you’ll use Python for DevOps and open source tools to test, secure, and analyze your network. Toward the end, you'll develop client-side applications, such as web API clients, email clients, SSH, and FTP, using socket programming. By the end of this Learning Path, you will have learned how to analyze a network's security vulnerabilities using advanced network packet capture and analysis techniques. This Learning Path includes content from the following Packt products: • Practical Network Automation by Abhishek Ratan • Mastering Python Networking by Eric Chou • Python Network Programming Cookbook, Second Edition by Pradeeban Kathiravelu, Dr. M. O. Faruque Sarker
Table of Contents (30 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Index

The Ansible Arista example


The final playbook example we will look at will be the Arista command module. At this point, we are quite familiar with our playbook syntax and structure. The Arista device can be configured to use transport using cli or eapi, so, in this example, we will use cli.

This is the host file:

[eos_devices]
A1 ansible_host=192.168.199.158

The playbook is also similar to what we have seen previously:

    ---
 - name: EOS Show Commands
 hosts: "eos_devices"
 gather_facts: false
 connection: local

 vars:
 cli:
 host: "{{ ansible_host }}"
 username: "arista"
 password: "arista"
 authorize: true
 transport: cli

 tasks:
 - name: eos show commands
 eos_command:
 commands:
 - show version | i Arista
 provider: "{{ cli }}"
 register: output

 - name: show output
 debug:
 var: output

The output will show the standard output as we would expect from the command line:

    PLAY [EOS Show Commands] 
    *******************************************************

    TASK [eos show commands...