Boring T. Build an Orchestrator in Go (From Scratch) 2024 Final

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Boring T. Build an Orchestrator in Go (From Scratch) 2024 Final

Textbook in PDF format Develop a deep understanding of Kubernetes and other orchestration systems by building your own with Go and the Docker API. Orchestration systems like Kubernetes can seem like a black box: you deploy to the cloud and it magically handles everything you need. That might seem perfect—until something goes wrong and you don’t know how to find and fix your problems. Build an Orchestrator in Go (From Scratch) reveals the inner workings of orchestration frameworks by guiding you through creating your own. In Build an Orchestrator in Go (From Scratch) you will learn how to Identify the components that make up any orchestration system Schedule containers on to worker nodes Start and stop containers using the Docker API Manage a cluster of worker nodes using a simple API Work with algorithms pioneered by Google’s Borg Demystify orchestration systems like Kubernetes and Nomad Build an Orchestrator in Go (From Scratch) explains each stage of creating an orchestrator with diagrams, step-by-step instructions, and detailed Go code samples. Don’t worry if you’re not a Go expert. The book’s code is optimized for simplicity and readability, and its key concepts are easy to implement in any language. You’ll learn the foundational principles of these frameworks, and even how to manage your orchestrator with a command line interface. About the Technology Orchestration frameworks like Kubernetes and Nomad radically simplify managing containerized applications. Building an orchestrator from the ground up gives you deep insight into deploying and scaling containers, clusters, pods, and other components of modern distributed systems. This book guides you step by step as you create your own orchestrator—from scratch. About the Book Build an Orchestrator in Go (From Scratch) gives you an inside-out perspective on orchestration frameworks and the low-level operation of distributed containerized applications. It takes you on a fascinating journey building a simple-but-useful orchestrator using the Docker API and Go SDK. As you go, you’ll get a guru-level understanding of Kubernetes, along with a pattern you can follow when you need to create your own custom orchestration solutions. What's Inside Schedule containers on worker nodes Start and stop containers using the Docker API Manage a cluster of worker nodes using a simple API Work with algorithms pioneered by Google’s Borg Who should read this book Build an Orchestrator in Go (From Scratch) is for anyone responsible for deploying and operating an orchestration system (i.e., DevOps engineers and SREs) and for anyone responsible for deploying and managing applications that run on an orchestration system (i.e., software engineers). If you want to learn how orchestrators work, you could read the source code for either Kubernetes or Nomad, both open source projects available on GitHub. Kubernetes has 5 million lines of Go code. Nomad has a considerably smaller codebase, but it’s still 500,000-plus lines of Go. I don’t know about you, but I would struggle to get much value from trying to make sense of half a million lines of code, let alone 5 million lines! preface Part 1 Introduction What is an orchestrator? From mental model to skeleton code Hanging some flesh on the task skeleton Part 2 Worker Workers of the Cube, unite! An API for the worker Metrics Putting it all together Part 3 Manager The manager enters the room An API for the manager What could possibly go wrong? Part 4 Refactorings Implementing a more sophisticated scheduler Implementing persistent storage for tasks Part 5 CLI Building a command-line interface Now what? worker pattern and integration systems Appendix Environment setup