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

Network operations

In the preceding sections, we explored how the OpenConfig management interface approaches two common network automation use cases: configuration management and operational state collection. These two tasks alone can get you a long way in your network automation journey, but there is a set of common operational tasks that don’t fall into either of these categories.

To automate all aspects of network operations, we need to perform tasks such as network device reloads, software life cycle management, and counter and adjacency resets. You normally execute these activities as part of interactive CLI workflows, with prompts and warnings that assume a human operator is involved in the process. This makes the automation of these tasks a major undertaking, as we have to resort to screen-scraping, which increases the already high risk of these tasks.

To address these challenges, OpenConfig proposed a new gRPC API, designed to abstract away the interactive commands...