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1. 前言
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2. 概念原理
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2.1 设计理念
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2.2 Objects
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2.2.1 Pod
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2.2.1.1 Pod解析
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2.2.1.2 Init容器
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2.2.1.3 Pod安全策略
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2.2.1.4 Pod的生命周期
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2.2.2 Node
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2.2.3 Namespace
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2.2.4 Service
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2.2.5 Volume和Persistent Volume
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2.2.6 Deployment
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2.2.7 Secret
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2.2.8 StatefulSet
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2.2.9 DaemonSet
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2.2.10 ServiceAccount
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2.2.11 ReplicationController和ReplicaSet
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2.2.12 Job
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2.2.13 CronJob
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2.2.14 Ingress
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2.2.15 ConfigMap
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2.2.16 Horizontal Pod Autoscaling
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2.2.17 Label
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2.2.18 垃圾收集
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2.2.19 NetworkPolicy
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3. 用户指南
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3.1 资源配置
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3.1.1 配置Pod的liveness和readiness探针
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3.1.2 配置Pod的Service Account
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3.2 命令使用
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3.2.1 使用kubectl
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3.2.2 docker用户过度到kubectl命令行指南
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3.3 集群安全性管理
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3.3.1 管理集群中的TLS
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3.3.2 kubelet的认证授权
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3.3.3 TLS bootstrap
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3.3.4 kubectl的用户认证授权
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3.3.5 RBAC——基于角色的访问控制
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3.3.6 IP伪装代理
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3.4 访问 Kubernetes 集群
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3.4.1 访问集群
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3.4.2 使用 kubeconfig 文件配置跨集群认证
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3.4.3 通过端口转发访问集群中的应用程序
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3.4.4 使用 service 访问群集中的应用程序
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3.5 在kubernetes中开发部署应用
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3.5.1 适用于kubernetes的应用开发部署流程
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3.5.2 迁移传统应用到kubernetes中——以Hadoop YARN为例
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4. 最佳实践
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4.1 在CentOS上部署kubernetes1.6集群
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4.1.1 创建TLS证书和秘钥
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4.1.2 创建kubeconfig文件
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4.1.3 创建高可用etcd集群
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4.1.4 安装kubectl命令行工具
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4.1.5 部署master节点
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4.1.6 部署node节点
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4.1.7 安装kubedns插件
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4.1.8 安装dashboard插件
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4.1.9 安装heapster插件
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4.1.10 安装EFK插件
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4.2 服务发现与负载均衡
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4.2.1 安装Traefik ingress
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4.2.2 分布式负载测试
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4.2.3 网络和集群性能测试
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4.2.4 边缘节点配置
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4.3 运维管理
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4.3.1 服务滚动升级
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4.3.2 应用日志收集
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4.3.3 配置最佳实践
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4.3.4 集群及应用监控
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4.3.5 使用Jenkins进行持续构建与发布
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4.3.6 数据持久化问题
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4.3.7 管理容器的计算资源
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4.4 存储管理
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4.4.1 GlusterFS
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4.4.1.1 使用GlusterFS做持久化存储
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4.4.1.2 在OpenShift中使用GlusterFS做持久化存储
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4.4.2 CephFS
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4.4.2.1 使用Ceph做持久化存储
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5. 领域应用
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< a href = ".." > 5.3 Serverless架构< / a >
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< h1 id = "serverless架构" > Serverless架 构 < / h1 >
< p > Serverless（ 无 服 务 器 架 构 ） 指 的 是 由 开 发 者 实 现 的 服 务 端 逻 辑 运 行 在 无 状 态 的 计 算 容 器 中 ， 它 由 事 件 触 发 ， 完 全 被 第 三 方 管 理 ， 其 业 务 层 面 的 状 态 则 被 开 发 者 使 用 的 数 据 库 和 存 储 资 源 所 记 录 。 < / p >
< h3 id = "serverless架构的优点" > Serverless架 构 的 优 点 < / h3 >
< p > 今 天 大 多 数 公 司 在 开 发 应 用 程 序 并 将 其 部 署 在 服 务 器 上 的 时 候 ， 无 论 是 选 择 公 有 云 还 是 私 有 的 数 据 中 心 ， 都 需 要 提 前 了 解 究 竟 需 要 多 少 台 服 务 器 、 多 大 容 量 的 存 储 和 数 据 库 的 功 能 等 。 并 需 要 部 署 运 行 应 用 程 序 和 依 赖 的 软 件 到 基 础 设 施 之 上 。 假 设 我 们 不 想 在 这 些 细 节 上 花 费 精 力 ， 是 否 有 一 种 简 单 的 架 构 模 型 能 够 满 足 我 们 这 种 想 法 ？ 这 个 答 案 已 经 存 在 ， 这 就 是 今 天 软 件 架 构 世 界 中 新 鲜 但 是 很 热 门 的 一 个 话 题 — — Serverless（ 无 服 务 器 ） 架 构 。 < / p >
< p > — — AWS 费 良 宏 < / p >
< ul >
< li > < strong > 降 低 运 营 成 本 ： < / strong > < / li >
< / ul >
< p > Serverless是 非 常 简 单 的 外 包 解 决 方 案 。 它 可 以 让 您 委 托 服 务 提 供 商 管 理 服 务 器 、 数 据 库 和 应 用 程 序 甚 至 逻 辑 ， 否 则 您 就 不 得 不 自 己 来 维 护 。 由 于 这 个 服 务 使 用 者 的 数 量 会 非 常 庞 大 ， 于 是 就 会 产 生 规 模 经 济 效 应 。 在 降 低 成 本 上 包 含 了 两 个 方 面 ， 即 基 础 设 施 的 成 本 和 人 员 （ 运 营 /开 发 ） 的 成 本 。 < / p >
< ul >
< li > < strong > 降 低 开 发 成 本 ： < / strong > < / li >
< / ul >
< p > IaaS和 PaaS存 在 的 前 提 是 ， 服 务 器 和 操 作 系 统 管 理 可 以 商 品 化 。 Serverless作 为 另 一 种 服 务 的 结 果 是 整 个 应 用 程 序 组 件 被 商 品 化 。 < / p >
< ul >
< li > < strong > 扩 展 能 力 ： < / strong > < / li >
< / ul >
< p > Serverless架 构 一 个 显 而 易 见 的 优 点 即 “ 横 向 扩 展 是 完 全 自 动 的 、 有 弹 性 的 、 且 由 服 务 提 供 者 所 管 理 ” 。 从 基 本 的 基 础 设 施 方 面 受 益 最 大 的 好 处 是 ， 您 只 需 支 付 您 所 需 要 的 计 算 能 力 。 < / p >
< ul >
< li > < strong > 更 简 单 的 管 理 ： < / strong > < / li >
< / ul >
< p > Serverless架 构 明 显 比 其 他 架 构 更 简 单 。 更 少 的 组 件 ， 就 意 味 着 您 的 管 理 开 销 会 更 少 。 < / p >
< ul >
< li > < strong > “ 绿 色 ” 的 计 算 ： < / strong > < / li >
< / ul >
< p > 按 照 《 福 布 斯 》 杂 志 的 统 计 ， 在 商 业 和 企 业 数 据 中 心 的 典 型 服 务 器 仅 提 供 5%～ 15%的 平 均 最 大 处 理 能 力 的 输 出 。 这 无 疑 是 一 种 资 源 的 巨 大 浪 费 。 随 着 Serverless架 构 的 出 现 ， 让 服 务 提 供 商 提 供 我 们 的 计 算 能 力 最 大 限 度 满 足 实 时 需 求 。 这 将 使 我 们 更 有 效 地 利 用 计 算 资 源 。 < / p >
< h2 id = "kubernetes上的serverless-架构" > Kubernetes上 的 serverless 架 构 < / h2 >
< p > 目 前 已 经 有 一 批 优 秀 的 基 于 kubernetes 的 serverless 架 构 开 源 项 目 如 下 ： < / p >
< ul >
< li > < a href = "https://github.com/alexellis/faas" target = "_blank" > faas< / a > - 🐳 Functions as a Service - a serverless framework for Docker & Kubernetes < a href = "https://blog.alexellis.io/introducing-functions-as-a-service/" target = "_blank" > https://blog.alexellis.io/introducing… < / a > < / li >
< li > < a href = "https://github.com/alexellis/faas-netes" target = "_blank" > faas-netes< / a > - Enable Kubernetes as a backend for Functions as a Service (OpenFaaS) < a href = "https://github.com/alexellis/faas" target = "_blank" > https://github.com/alexellis/faas< / a > < / li >
< li > < a href = "https://github.com/funktionio/funktion/" target = "_blank" > funktion< / a > - a CLI tool for working with funktion < a href = "https://funktion.fabric8.io/" target = "_blank" > https://funktion.fabric8.io/< / a > < / li >
< li > < a href = "https://github.com/iron-io/functions" target = "_blank" > IronFunctions< / a > - IronFunctions - the serverless microservices platform. < a href = "http://iron.io/" target = "_blank" > http://iron.io< / a > < / li >
< li > < a href = "https://github.com/kubeless/kubeless" target = "_blank" > kubeless< / a > - Kubernetes Native Serverless Framework < a href = "http://kubeless.io/" target = "_blank" > http://kubeless.io< / a > < / li >
< li > < a href = "http://openwhisk.incubator.apache.org/" target = "_blank" > OpenWhisk< / a > - Apache OpenWhisk (Incubating) is a < a href = "http://openwhisk.incubator.apache.org/serverless" target = "_blank" > serverless< / a > , open source cloud platform that executes functions in response to events at any scale.< / li >
< / ul >
< p > 以 上 项 目 收 录 于 < a href = "https://github.com/rootsongjc/awesome-cloud-native" target = "_blank" > awsome-cloud-native< / a > < / p >
< h2 id = "参考" > 参 考 < / h2 >
< p > < a href = "https://martinfowler.com/articles/serverless.html" target = "_blank" > Serverless Architectures - Martin Fowler< / a > < / p >
< p > < a href = "http://dockone.io/article/1460" target = "_blank" > Serverless架 构 综 述 < / a > < / p >
< p > < a href = "http://www.infoq.com/cn/news/2017/04/2017-Serverless" target = "_blank" > 2017年 会 是 Serverless爆 发 之 年 吗 ？ < / a > < / p >
< p > < a href = "https://aws.amazon.com/cn/blogs/china/iaas-faas-serverless/" target = "_blank" > 从 IaaS到 FaaS— — Serverless架 构 的 前 世 今 生 < / a > < / p >
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