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Kubernetes:超越Docker Swarm与Mesos的容器集群王者

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下载需积分: 45 | 18.51MB | 更新于2024-07-19 | 104 浏览量 | 1 下载量 举报 收藏
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"这是一本关于Kubernetes的电子书,由Kubernetes社区的开发者撰写,详细介绍了Kubernetes在容器管理领域的优势以及其在全球开源项目中的重要地位。书中指出,Kubernetes在国内虽然发展相对较慢,但在国外已经取得了显著成就。作者强调了容器编排管理的重要性,尤其是在国内对这一领域的忽视和误解。" Kubernetes,通常简称为k8s,是一种先进的容器编排系统,用于自动化容器化应用的部署、扩展和管理。相较于Docker Swarm和Apache Mesos,Kubernetes以其成熟、稳定和强大的功能扩展性脱颖而出,特别适合大规模集群的精细化管理。它支持有状态服务,具备处理复杂网络场景的能力,并且对各种容器平台具有良好的兼容性。 Kubernetes的功能包括但不限于: 1. **负载均衡**:Kubernetes提供了内置的负载均衡解决方案,可以将流量分发到多个Pod,确保服务的高可用性。 2. **灰度升级**:支持蓝绿部署和滚动更新,允许在不影响现有服务的情况下逐步升级应用。 3. **故障恢复和冗余**:通过健康检查和自我修复机制,Kubernetes能够在节点或Pod失败时自动恢复服务。 4. **容灾恢复**:借助持久卷(Persistent Volumes)和备份策略,可以实现数据的保护和快速恢复。 5. **DevOps集成**:与CI/CD工具紧密集成,简化了开发和部署流程,提高了开发效率。 在国内,Kubernetes的发展受到了一些挑战,如Google的缺席导致的技术认知偏差,以及信息壁垒。然而,随着容器云创业热潮的降温,越来越多的人开始重视容器编排系统的复杂性和重要性。本书的作者,作为Kubernetes核心特性CRI的主要贡献者,分享了他的专业知识和实践经验,旨在提供一个无商业倾向、纯粹的技术指南,帮助国内的技术社区更好地理解和应用Kubernetes。 这本书的内容可能涵盖了Kubernetes的基本概念,如Pod、Service、Deployment、StatefulSet等,以及如何在实际环境中设计和操作Kubernetes集群。此外,可能还讨论了与容器网络相关的议题,如Network Policies和Ingress,以及如何利用Kubernetes进行微服务架构的构建和管理。 总而言之,了解并掌握Kubernetes对于提升企业开发运维效率,优化资源利用率,确保应用的开发速度、稳定性和安全性,都是至关重要的。在竞争激烈的互联网行业中,熟练运用Kubernetes可以为企业带来显著的竞争优势。

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Kubernetes is often documented and approached from the perspective of someone just running software already built. Kubernetes may also be used to enhance the development process itself, enabling more consistent testing and analysis of written code so that developers can verify not only correctness, but efficiency as well. This book will introduce the key concepts of Kubernetes, linked with examples of how to deploy and use those with a bit of NodeJS and Python example code, so that a reader could quickly replicate and use that knowledge themselves in their development process. You will begin by setting up Kubernetes for development and packaging your code to run in Kubernetes. It will walk you through the set up and installation process before working with Kubernetes in the development environment. We will then take a deep dive into concepts like automating your build process, autonomic computing, debugging, integration testing and so on. This book will cover all the necessary concepts required for any developer to work with Kubernetes. Towards the end of this book, we will be covering few security best practices which will secure the developer environment. By the end of this book, you will be in a position to use Kubernetes in the development ecosystem. What you will learn Build your software into containers. Deploy and debug those containers with Kubernetes. Define and add configuration through Kubernetes. Declare how your application fits together, using internal and external services. Add feedback in your code to help Kubernetes manage your services. Monitor, measure your services through integration testing and in production deployments.