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

Configuration Management

Configuration management is a process that helps us enforce the desired configuration state on an IT system. It’s a way to make sure a network device, in our context, performs as expected as we roll out new settings. As this becomes a mundane task we perform repeatedly, it’s no surprise network configuration management is the most common network automation use case according to the NetDevOps 2020 Survey (Further reading).

In the previous chapter, we discussed common configuration management tasks, along with some helpful tools and libraries that can help you write programs to automate those tasks in Go. In this chapter, we will focus on a few concrete examples, taking a closer look at how Go can help us connect and interact with network devices from different networking vendors using standard protocols. We will cover four areas in this chapter:

  • Before we introduce any new examples, we will define a three-node multi-vendor virtual network...