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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 资源对象配置
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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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3.1.3 Secret配置
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3.2.3 管理namespace中的资源配额
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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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< h1 id = "1-在容器中获取-pod-的ip" > 1. 在 容 器 中 获 取 Pod 的 IP< / h1 >
< p > 通 过 环 境 变 量 来 实 现 ， 该 环 境 变 量 直 接 引 用 resource 的 状 态 字 段 ， 示 例 如 下 ： < / p >
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< span class = "hljs-attr" > fieldPath:< / span > status.podIP
< span class = "hljs-attr" > ports:< / span >
< span class = "hljs-attr" > - name:< / span > service
< span class = "hljs-attr" > containerPort:< / span > < span class = "hljs-number" > 777< / span >
< / code > < / pre >
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< p > 容 器 中 可 以 直 接 使 用 < code > POD_IP< / code > 环 境 变 量 获 取 容 器 的 IP。 < / p >
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< h1 id = "2-指定容器的启动参数" > 2. 指 定 容 器 的 启 动 参 数 < / h1 >
< p > 我 们 可 以 在 Pod 中 为 容 器 使 用 command 为 容 器 指 定 启 动 参 数 ： < / p >
< pre > < code class = "lang-Bash" > < span class = "hljs-built_in" > command< / span > : [< span class = "hljs-string" > " /bin/bash" < / span > ,< span class = "hljs-string" > " -c" < / span > ,< span class = "hljs-string" > " bootstrap.sh" < / span > ]
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< p > 看 似 很 简 单 ， 使 用 数 组 的 方 式 定 义 ， 所 有 命 令 使 用 跟 Dockerfile 中 的 CMD 配 置 是 一 样 的 ， 但 是 有 一 点 不 同 的 是 ， < code > bootsttap.sh< / code > 必 须 具 有 可 执 行 权 限 ， 否 则 容 器 启 动 时 会 出 错 。 < / p >
< h2 id = "3-让pod调用宿主机的docker能力" > 3. 让 Pod调 用 宿 主 机 的 docker能 力 < / h2 >
< p > 我 们 可 以 想 象 一 下 这 样 的 场 景 ， 让 Pod 来 调 用 宿 主 机 的 docker 能 力 ， 只 需 要 将 宿 主 机 的 < code > docker< / code > 命 令 和 < code > docker.sock< / code > 文 件 挂 载 到 Pod 里 面 即 可 ， 如 下 ： < / p >
< pre > < code class = "lang-Yaml" > < span class = "hljs-attr" > apiVersion:< / span > v1
< span class = "hljs-attr" > kind:< / span > Pod
< span class = "hljs-attr" > metadata:< / span >
< span class = "hljs-attr" > name:< / span > busybox-cloudbomb
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do \
docker run -d --name BOOM_$(cat /dev/urandom | tr -cd ' a-f0-9' | head -c 6) nginx ; \
done" < / span >
< span class = "hljs-attr" > name:< / span > cloudbomb
< span class = "hljs-attr" > volumeMounts:< / span >
< span class = "hljs-attr" > - mountPath:< / span > /var/run/docker.sock
< span class = "hljs-attr" > name:< / span > docker-socket
< span class = "hljs-attr" > - mountPath:< / span > /bin/docker
< span class = "hljs-attr" > name:< / span > docker-binary
< span class = "hljs-attr" > volumes:< / span >
< span class = "hljs-attr" > - name:< / span > docker-socket
< span class = "hljs-attr" > hostPath:< / span >
< span class = "hljs-attr" > path:< / span > /var/run/docker.sock
< span class = "hljs-attr" > - name:< / span > docker-binary
< span class = "hljs-attr" > hostPath:< / span >
< span class = "hljs-attr" > path:< / span > /bin/docker
< / code > < / pre >
< p > 参 考 ： < a href = "https://www.infoq.com/presentations/patterns-microservices-kubernetes" target = "_blank" > Architecture Patterns for Microservices in Kubernetes< / a > < / p >
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< script src = "../gitbook/gitbook-plugin-splitter/splitter.js" > < / script >
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< script src = "../gitbook/gitbook-plugin-editlink/plugin.js" > < / script >
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< script src = "../gitbook/gitbook-plugin-back-to-top-button/plugin.js" > < / script >
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< script src = "../gitbook/gitbook-plugin-search-plus/jquery.mark.min.js" > < / script >
< script src = "../gitbook/gitbook-plugin-search-plus/search.js" > < / script >
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< script src = "../gitbook/gitbook-plugin-github-buttons/plugin.js" > < / script >
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< script src = "../gitbook/gitbook-plugin-3-ba/plugin.js" > < / script >
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< script src = "../gitbook/gitbook-plugin-sharing/buttons.js" > < / script >
< script src = "../gitbook/gitbook-plugin-fontsettings/fontsettings.js" > < / script >
< / body >
< / html >
