Book Image

Network Automation Cookbook

By : Karim Okasha
Book Image

Network Automation Cookbook

By: Karim Okasha

Overview of this book

Network Automation Cookbook is designed to help system administrators, network engineers, and infrastructure automation engineers to centrally manage switches, routers, and other devices in their organization's network. This book will help you gain hands-on experience in automating enterprise networks and take you through core network automation techniques using the latest version of Ansible and Python. With the help of practical recipes, you'll learn how to build a network infrastructure that can be easily managed and updated as it scales through a large number of devices. You'll also cover topics related to security automation and get to grips with essential techniques to maintain network robustness. As you make progress, the book will show you how to automate networks on public cloud providers such as AWS, Google Cloud Platform, and Azure. Finally, you will get up and running with Ansible 2.9 and discover troubleshooting techniques and network automation best practices. By the end of this book, you'll be able to use Ansible to automate modern network devices and integrate third-party tools such as NAPALM, NetBox, and Batfish easily to build robust network automation solutions.
Table of Contents (15 chapters)

Controlling parallelism and rolling updates in Ansible

By default, Ansible runs tasks in parallel. In this recipe, we will outline how to control the parallel execution of Ansible and how we can modify this default behavior. We will also explore the concept of rolling updates and how to utilize them in Ansible.

How to do it...

  1. Update the ansible.cfg file to control parallel execution, as shown in the following code snippet:
  1. Update the pb_push_acl.yml file to set up rolling updates for the configuration push on the network devices, as shown in the following code block:
- name: Configure ACL on IOS-XR
hosts: all
serial: 1
tags: deploy

- name: Backup Config