Book Image

Network Automation with Go

By : Nicolas Leiva, Michael Kashin
Book Image

Network Automation with Go

By: Nicolas Leiva, Michael Kashin

Overview of this book

Go’s built-in first-class concurrency mechanisms make it an ideal choice for long-lived low-bandwidth I/O operations, which are typical requirements of network automation and network operations applications. This book provides a quick overview of Go and hands-on examples within it to help you become proficient with Go for network automation. It’s a practical guide that will teach you how to automate common network operations and build systems using Go. The first part takes you through a general overview, use cases, strengths, and inherent weaknesses of Go to prepare you for a deeper dive into network automation, which is heavily reliant on understanding this programming language. You’ll explore the common network automation areas and challenges, what language features you can use in each of those areas, and the common software tools and packages. To help deepen your understanding, you’ll also work through real-world network automation problems and apply hands-on solutions to them. By the end of this book, you’ll be well-versed with Go and have a solid grasp on network automation.
Table of Contents (18 chapters)
1
Part 1: The Go Programming Language
6
Part 2: Common Tools and Frameworks
10
Part 3: Interacting with APIs

Environment setup

One of the easiest and safest ways to learn and experiment with network automation is to build a lab environment. Thanks to the progress we’ve had in the last decade, today, we have access to virtualized and containerized network devices from different networking vendors and plenty of tools that can help us build a virtual topology from them.

In this book, we will use one of those tools: Containerlab. This tool, which is written in Go, allows you to build arbitrary network topologies from container images. The fact that you can create and run topologies based on a plain YAML file in a matter of seconds makes it a strong choice to run quick tests. Please refer to the Appendix for installation instructions and recommendations for host operating systems.

Creating the topology

Throughout the rest of this book, we will work with a base network topology consisting of three containerized network devices running different network operating systems (NOSes)...