Docker实践指南:从基础到高级网络配置

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《Docker实践中文版》是一本全面的教程,适合初学者和进阶者深入理解Docker技术。本书详细介绍了Docker的基础概念、安装方法、关键组件如镜像和容器的使用,以及高级功能如自定义网桥、Dockerfile的编写、网络配置、数据管理等。 **第1章 Docker简介** - 介绍Docker的基本概念,包括为何选择Docker作为容器化平台,其优势在于简化部署、环境隔离和资源利用率提升。 - 镜像(Image)是Docker的核心,它是可移植的容器模板,包含了应用程序及其依赖环境。 - 容器(Container)是镜像的实例,轻量级且独立,能够在一个宿主机上运行多个相互隔离的应用。 **1.12 自定义网桥** - Docker默认使用`docker0`网桥进行容器间的通信。1.12.5章节开始探讨如何自定义网桥,例如配置网络策略、创建自定义桥接网络,以满足特定的网络需求。 **1.13 Dockerfile和多阶段构建** - Dockerfile是一种文本文件,用于自动化构建镜像。这部分内容详细讲解了COPY、ADD、CMD、ENTRYPOINT、ENV等指令的用法,以及ARG、VOLUME和EXPOSE等高级特性。 - Dockerfile多阶段构建允许在构建过程中拆分镜像,提高效率和安全性。 **数据管理** - 数据卷(Volume)用于持久化存储数据,区分于容器内的临时数据。1.12.6至1.13.4部分介绍了如何使用数据卷,监听主机目录以及容器之间的数据共享。 - 高级网络配置涉及容器间通信、外部访问和DNS设置,确保网络连通性。 **容器操作与管理** - 学习如何启动、守护态运行、停止、进入容器,以及导出和导入镜像。这部分还涵盖了私有仓库的使用和权限管理。 **实战部分** - 本书提供大量实践案例,从基础操作到高级配置,帮助读者逐步掌握Docker的使用技巧。 总结来说,《Docker实践中文版》是一本实用教程,通过循序渐进的方式,引导读者从基础到深入理解Docker的各个方面,包括容器的生命周期管理、网络配置、镜像构建、数据管理和私有仓库管理,旨在帮助读者成为Docker的熟练使用者。
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In September 2013, while browsing Hacker News, I stumbled across an article in Wired about a new technology called “Docker.” 1 As I read it, I became increasingly excited as I realized Docker’s revolutionary potential. The company I’d worked at for over a decade was struggling to deliver software quickly enough. Provisioning environments was a costly, time-consuming, manual, and inelegant affair. Continuous integration was barely existent, and setting up devel- opment environments was an exercise in patience. As my job title included the words “DevOps Manager,” I was peculiarly motivated to solve these problems! I recruited a couple of motivated coworkers (one of them now my coauthor) via a company mailing list, and together our skunkworks team labored to turn a beta tool into a business advantage, reducing the high costs of VM s and enabling new ways of thinking about building and deploying software. We even built and open sourced an automation tool (ShutIt) to suit our organization’s delivery needs. Docker gave us a packaged and maintained tool that solved many problems that would have been effectively insuperable had we taken it upon ourselves to solve them. This was open source at its best, empowering us to take on a challenge using our spare time, overcoming technical debt, and learning lessons daily. Lessons not only about Docker, but about continuous integration, continuous delivery, packaging, automa- tion, and how people respond to speedy and disruptive technological change. 1 http://www.wired.com/2013/09/docker/ PREFACE xviii For us, Docker is a remarkably broad tool. Wherever you run software using Linux, Docker can impact it. This makes writing a book on the subject challenging, because the landscape is as broad as software itself. The task is made more onerous by the extraordinary rate at which the Docker ecosystem is producing solutions to meet the needs that emerge from such a fundamental change in software production. Over time, the shape of problems and solutions became familiar to us, and in this book we’ve endeavored to pass on this experience. This will enable you to figure out solu- tions to your particular technical and business constraints. When giving talks at meetups, we’re struck by how quickly Docker has become effective within organizations willing to embrace it. This book mirrors how we used Docker, going from our desktops, through the DevOps pipeline, and all the way to production. As a consequence, this book is sometimes unorthodox, but as engineers we believe that purity must sometimes give way to practicality, especially when it comes to saving money! Everything in this book is based on real lessons from the field, and we hope you benefit from our hard-won experience.