Network Automation with Go
Description
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Persons
Nicolas is a Specialist Solutions Architect at Red Hat. In his role, he helps customers of all sizes to automate the provisioning and operation of IT infrastructure, services, and applications. Prior to that, he worked in the networking industry for 15 years, becoming a Cisco Certified Design Expert (CCDE) and Internetwork Expert (CCIE). He is passionate about writing open-source software in Go with a keen interest in cloud technologies.Kashin Michael :
Michael is a Cloud Infrastructure Solutions Architect, currently working in the networking business unit of NVIDIA. Throughout his career, he held multiple roles ranging from network operations, through software development to systems architecture and design. He enjoys breaking the boundaries between different disciplines to come up with creative solutions and help customers solve their problems in the most optimal way. He is a prolific open-source contributor and writer with much of his work focused on cloud-native infrastructure, automation, and orchestration.
Content
Introduction
Go Basics
Getting Started with Go
Networking (TCP/IP) with Go
Network Automation
Configuration Management
Automation Frameworks
Network APIs
OpenConfig
Network Monitoring
Expert Insights
Appendix: Building a Testing Environment
Preface
This book explores network automation, a discipline that aims to generate consistent and repeatable processes to increase efficiency and reliability in network operations. As you progress through the chapters, you'll learn the Go language basics and put it into practice by coding common day-to-day network processes to jumpstart your network automation journey.
Who this book is for
This book is designed for all network engineers, administrators, and other network practitioners looking to understand what network automation is and how the Go programming language can help us develop network automation solutions. Since the first part of the book offers a comprehensive overview of Go's main features, this book is suitable for beginners with a solid grasp of programming basics.
What this book covers
Chapter 1, Introduction, explores networking and Go, the benefits of Go, and how it contrasts with Python.
Chapter 2, Go Basics, defines Go and talks about its guiding principles. It presents the Go source code file structure and shows how to compile Go programs.
Chapter 3, Getting Started with Go, covers different characteristics of Go that are relevant for network automation such as control flow, input and output operations, decoding and encoding, and concurrency.
Chapter 4, Networking (TCP/IP) with Go, focuses on practical use cases with Go for each layer of the TCP/IP model.
Chapter 5, Network Automation, discusses what network automation is, its impact on network operations, and its benefits for the business. It also talks about scaling individual use cases into a network automation system.
Chapter 6, Configuration Management, walks us through practical examples using Go to interact with network devices from different networking vendors via SSH and HTTP to configure and collect their operational state to verify any changes.
Chapter 7, Automation Frameworks, describes how some automation frameworks can integrate with Go with an emphasis on Ansible and Terraform.
Chapter 8, Network APIs, takes a look at machine-to-machine interfaces to manage network devices that enable network automation. From RESTCONF and OpenAPI to gRPC.
Chapter 9, OpenConfig, examines how to perform common operational tasks with OpenConfig gRPC services, such as provisioning a device, subscribing to a telemetry stream, and executing an action such as traceroute.
Chapter 10, Network Monitoring, dives into the world of network monitoring from different angles with Go; capturing network packets, processing data plane telemetry, running active probes to measure network performance, and visualizing metrics.
Chapter 11, Expert Insights, consists of people who have real-world hands-on experience with network automation and/or are using Go for network-related tasks and activities sharing their perspectives with us.
Chapter 12, Appendix: Building a Testing Environment, documents the process of building a testing environment that includes the compatible version of Containerlab and other related dependencies, to make sure you get a seamless experience running examples from any chapter of this book.
To get the most out of this book
This book assumes a basic understanding of networking and programming fundamentals. You need to be familiar with the Linux OS to be able to install software packages and run and interpret the results of provided commands. Most hands-on exercises are executed within a container environment, so a basic understanding of containers will help you explore and modify example programs.
Examples included in this book can be reproduced in most Linux environments. All software requirements and dependencies are covered in detail in the Appendix.
Software/hardware covered in the book
Operating system requirements
Go 1.18.1
Linux (Ubuntu 22.04, Fedora 35), Windows Subsystem for Linux (WSL2) or macOS
Containerlab 0.28.1
Linux (Ubuntu 22.04, Fedora 35), Windows Subsystem for Linux (WSL2) or macOS
Docker 20.10.14
Linux (Ubuntu 22.04, Fedora 35), Windows Subsystem for Linux (WSL2) or macOS
Download the example code files
You can download the example code files for this book from GitHub at https://github.com/PacktPublishing/Network-Automation-with-Go. If there's an update to the code, it will be updated in the GitHub repository.
We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!
Download the color images
We also provide a PDF file that has color images of the screenshots and diagrams used in this book. You can download it here: https://packt.link/hOgov.
Conventions used
There are a number of text conventions used throughout this book.
Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "You can test this code from ch03/type-definition/main.go."
A block of code is set as follows:
func main() { a := -1 var b uint32 b = 4294967295 var c float32 = 42.1 }When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:
func main() { a := 4294967295 b := uint32(a) c := float32(b) }Tips or important notes
Appear like this.
Get in touch
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