Until recently, learning CoreDNS required reading the code or combing through the skimpy documentation on the website. No longer. With this practical book, developers and operators working with Docker or Linux containers will learn how to use this standard DNS server with Kubernetes.

John Belamaric, senior staff software engineer at Google, and Cricket Liu, chief DNS architect at Infoblox, show you how to configure CoreDNS using real-world configuration examples to achieve specific purposes. You’ll learn the basics of DNS, including how it functions as a location broker in container environments and how it ties into Kubernetes.

• Dive into DNS theory: the DNS namespace, domain names, domains, and zones
• Learn how to configure your CoreDNS server
• Manage and serve basic and advanced zone data with CoreDNS
• Configure CoreDNS service discovery with etcd and Kubernetes
• Learn one of the most common use cases for CoreDNS: the integration with Kubernetes
• Manipulate queries and responses as they flow through the plug-in chain
• Monitor and troubleshoot the availability and performance of your DNS service

• Build custom versions of CoreDNS and write your own plug-ins

直到最近，学习CoreDNS需要阅读代码或梳理网站上的草率文档。现在不用了。有了这本实用的书，使用Docker或Linux容器的开发者和操作者将学会如何在Kubernetes中使用这个标准的DNS服务器。

谷歌的高级软件工程师John Belamaric和Infoblox的首席DNS架构师Cricket Liu向你展示了如何使用真实世界的配置实例来配置CoreDNS，以达到特定的目的。你将了解到DNS的基础知识，包括它在容器环境中作为位置代理的功能以及它与Kubernetes的关系。

- 深入了解DNS理论：DNS名称空间、域名、域和区

- 了解如何配置你的CoreDNS服务器

- 用CoreDNS管理和服务基本和高级区域数据

- 用etcd和Kubernetes配置CoreDNS服务发现

- 了解CoreDNS最常见的使用情况之一：与Kubernetes的整合

- 当查询和响应流经插件链时对其进行操作

- 监控DNS服务的可用性和性能，并对其进行故障排除

- 构建CoreDNS的自定义版本并编写自己的插件