Network Automation With Go

Understand the world of modern network automation with Go and deepen your knowledge with insights from 10+ experts who have real-world hands-on experience with network automation and/or are using Go for network-related tasks Key Features A comprehensive guide to the world of modern network automation Use Go to build anything from repetitive task automation to complex distributed systems Over 30 practical, ready-to-use sample programs Book Description 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. What you will learn Understand Go programming language basics via network-related examples Find out what features make Go a powerful alternative for network automation Explore network automation goals, benefits, and common use cases Discover how to interact with network devices using a variety of technologies Integrate Go programs into an automation framework Take advantage of the OpenConfig ecosystem with Go Build distributed and scalable systems for network observability Who this book is for This book is for all network engineers, administrators, and other network practitioners looking to understand what network automation is and how the Go programming language can help develop network automation solutions. As 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 on programming basics.

"Mastering Go Network Administration" is a structured beginning for network administrators looking to improve network efficiency, scalability, and security. This book provides a one-stop solution for all of your network administration needs, with comprehensive coverage of automation, security, containerization, monitoring, and performance testing. Beginning with the fundamentals of creating a network automation lab with the EVENG network simulator and the Go programming language, readers will learn the step-by-step process of installing EVE-NG, followed by the importance of service mesh in automation and how it can simplify network operations. The book delves deeply into critical topics such as deploying ingress controllers and implementing service mesh with Linkerd. Readers will learn about container-native storage, container storage management with Docker, and automated SSL certificates, firewall configuration, and network policies. Monitoring and performance tuning are also covered in the book, including how to monitor container performance and automatically roll out updates. The book covers a series of performance testing strategies like load testing, stress testing, and scalability testing. It shows readers how to find performance bottlenecks and optimise their network with the help of tools like Vegeta and Apache JMeter through the use of real-world examples. Key Learnings Setting up an EVE-NG network simulator, VIM IDE, kubeadm, and a comprehensive network automation lab to improve network efficiency, scalability, and security. Configuring ports, hosts, and servers using Go scripting to streamline network automation. Writing, testing, and validating network automation scripts to ensure smooth and reliable network administration. Building Docker images, running containers, and managing container deployments for efficient containerization. Automating load balancing, firewall configuration, and Kubernetes network policies for seamless network management. Working with popular tools such as Puppet, Zookeeper, Traefik, Envoy, and various Go networking packages. Automating SSL setup, container storage, container performance monitoring, and rolling updates. Using powerful load testing tools like Vegeta and Apache JMeter for efficient load testing, stress testing, and scalability testing to identify and eliminate performance bottlenecks. Table of Content Go Essentials for Networks Setting Up Network Automation Environment Configuring Modern Networks Write, Test and Validate Automation Scripts Automation of Configuration Management Networking with Container and Docker Orchestrating Containers and Automating Workloads Automate SSL, Container-native Storage and Performance Kubernetes Automation Service Mesh, Firewall and Network Policies Network Performance Testing Audience If you're a network administrator who wants to level up your game, "Mastering Go Network Administration" is the book for you. This book will help you become a more efficient, effective, and confident network administrator by providing clear explanations, practical examples, and comprehensive coverage.

This book illustrates how to apply Go programming to network operations. The topics cover common use cases through examples that are designed to act as a guide and serve as a reference. The reader is assumed to have already gained a fundamental understanding of Go programming; however, the examples are explained for additional clarification. The focus is on using Go for network operations, not on the language itself.

Like sysadmins before them, network engineers are finding that they cannot do their work manually anymore. As the field faces new protocols, technologies, delivery models, and a pressing need for businesses to be more agile and flexible, network automation is becoming essential. This practical guide shows network engineers how to use a range of technologies and tools—including Linux, Python, JSON, and XML—to automate their systems through code. Network programming and automation will help you simplify tasks involved in configuring, managing, and operating network equipment, topologies, services, and connectivity. Through the course of the book, you’ll learn the basic skills and tools you need to make this critical transition. This book covers: Python programming basics: data types, conditionals, loops, functions, classes, and modules Linux fundamentals to provide the foundation you need on your network automation journey Data formats and models: JSON, XML, YAML, and YANG for networking Jinja templating and its applicability for creating network device configurations The role of application programming interfaces (APIs) in network automation Source control with Git to manage code changes during the automation process How Ansible, Salt, and StackStorm open source automation tools can be used to automate network devices Key tools and technologies required for a Continuous Integration (CI) pipeline in network operations

Network Programming with Go teaches you how to write clean, secure network software with the programming language designed to make it seem easy. Go combines the best parts of many other programming languages. It’s fast, scalable, and designed for high-performance networking and multiprocessing—in other words, it’s perfect for network programming. Network Programming with Go is for developers ready to start leveraging Go’s ease of use for writing secure, readable, production-ready network code. Early chapters establish a foundation of networking and traffic-routing know-how upon which the rest of the book builds. You’ll put that knowledge to use as author Adam Woodbeck guides you through writing programs that communicate using TCP, UDP, Unix sockets, and other features that ensure reliable data transmission. As you progress, you’ll explore higher-level network protocols like HTTP and HTTP/2, then build applications that securely interact with servers, clients, and APIs over a network using TLS. In addition, Woodbeck shows you how to create a simple messaging protocol, develop tools for monitoring network traffic, craft a custom web server, and implement best practices for interacting with cloud providers using their SDKs. Along the way, you’ll learn: • IP basics for writing effective network programs, such as IPv4 and IPv6 multicasting, ports, and network address translation • How to use handlers, middleware, and multiplexers to build capable HTTP-based applications with minimal code • The OSI and TCP/IP models for layered data architectures • Methods for reading data from/writing data to a network connection, like the type-length-value encoding scheme • Tools for incorporating authentication and encryption into your applications using TLS, like mutual authentication • How to serialize data for storage or transmission in Go-friendly formats like JSON, Gob, XML, and protocol buffers • How to Leverage Go’s code generation support to efficiently communicate with gRPC-based network services So get ready to take advantage of Go’s built-in concurrency, rapid compiling, and rich standard library. Because when it comes to writing robust network programs, it’s Go time.

Get More from your Network with Automation tools to increase its effectiveness. About This Book Get started with network automation (and different automation tasks) with relevant use cases Apply software design principles such as Continuous Integration and DevOps to your network toolkit Guides you through some best practices in automation Who This Book Is For If you are a network engineer looking for an extensive guide to help you automate and manage your network efficiently, then this book is for you. What You Will Learn Get the detailed analysis of Network automation Trigger automations through available data factors Improve data center robustness and security through specific access and data digging Get an Access to APIs from Excel for dynamic reporting Set up a communication with SSH-based devices using netmiko Make full use of practical use cases and best practices to get accustomed with the various aspects of network automation In Detail Network automation is the use of IT controls to supervise and carry out every-day network management functions. It plays a key role in network virtualization technologies and network functions. The book starts by providing an introduction to network automation, SDN, and its applications, which include integrating DevOps tools to automate the network efficiently. It then guides you through different network automation tasks and covers various data digging and reporting methodologies such as IPv6 migration, DC relocations, and interface parsing, all the while retaining security and improving data center robustness. The book then moves on to the use of Python and the management of SSH keys for machine-to-machine (M2M) communication, all followed by practical use cases. The book also covers the importance of Ansible for network automation including best practices in automation, ways to test automated networks using different tools, and other important techniques. By the end of the book, you will be well acquainted with the various aspects of network automation. Style and approach A clear, concise, and straightforward book that will enable you to automate networks and improve performance.

Today, networks must evolve and scale faster than ever. You can’t manage everything by hand anymore: You need to automate relentlessly. YANG, along with the NETCONF, RESTCONF, or gRPC/gNMI protocols, is the most practical solution, but most implementers have had to learn by trial and error. Now, Network Programmability with YANG gives you complete and reliable guidance for unlocking the full power of network automation using model-driven APIs and protocols. Authored by three YANG pioneers, this plain-spoken book guides you through successfully applying software practices based on YANG data models. The authors focus on the network operations layer, emphasizing model-driven APIs, and underlying transports. Whether you’re a network operator, DevOps engineer, software developer, orchestration engineer, NMS/OSS architect, service engineer, or manager, this guide can help you dramatically improve value, agility, and manageability throughout your network. Discover the value of implementing YANG and Data Model-Driven Management in your network Explore the layers and components of a complete working solution Build a business case where value increases as your solution grows Drill down into transport protocols: NETCONF, RESTCONF, and gNMI/gRPC See how telemetry can establish a valuable automated feedback loop Find data models you can build on, and evaluate models with similar functionality Understand models, metadata, and tools from several viewpoints: architect, operator, module author, and application developer Walk through a complete automation journey: business case, service model, service implementation, device integration, and operation Leverage the authors’ experience to design successful YANG models and avoid pitfalls

Unleash the power of automation by mastering network programming fundamentals using Python and Go best practices Purchase of the print or Kindle book includes a free PDF eBook Key Features Understand the fundamentals of network programming and automation Learn tips and tricks to transition from traditional networking to automated networks Solve everyday problems with automation frameworks in Python and Go Book Description Network programming and automation, unlike traditional networking, is a modern-day skill that helps in configuring, managing, and operating networks and network devices. This book will guide you with important information, helping you set up and start working with network programming and automation. With Network Programming and Automation Essentials, you'll learn the basics of networking in brief. You'll explore the network programming and automation ecosystem, learn about the leading programmable interfaces, and go through the protocols, tools, techniques, and technologies associated with network programming. You'll also master network automation using Python and Go with hands-on labs and real network emulation in this comprehensive guide. By the end of this book, you'll be well equipped to program and automate networks efficiently. What you will learn Understand the foundation of network programming Explore software-defined networks and related families Recognize the differences between Go and Python through comparison Leverage the best practices of Go and Python Create your own network automation testing framework using network emulation Acquire skills in using automation frameworks and strategies for automation Who this book is for This book is for network architects, network engineers, and software professionals looking to integrate programming into networks. Network engineers following traditional techniques can use this book to transition into modern-day network automation and programming. Familiarity with networking concepts is a prerequisite.