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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 主要概念
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2.2.1 Pod
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2.2.1.1 Pod解析
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2.2.2 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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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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3.3 集群管理
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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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3.4 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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4.4 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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5. 领域应用
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5.1 微服务架构
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5.1.1 Istio
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5.1.1.1 安装istio
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5.1.1.2 配置请求的路由规则
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5.1.2 Linkerd
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5.1.2.1 Linkerd 使用指南
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5.1.3 微服务中的服务发现
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5.2 大数据
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5.2.1 Spark on Kubernetes
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6. 开发指南
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6.1 开发环境搭建
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6.2 单元测试和集成测试
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6.3 client-go示例
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6.4 社区贡献
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7. 附录
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7.1 Docker最佳实践
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7.2 问题记录
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7.3 使用技巧
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< h1 id = "service-account" > Service Account< / h1 >
< p > Service account是 为 了 方 便 Pod里 面 的 进 程 调 用 Kubernetes API或 其 他 外 部 服 务 ， 它 不 同 于 User account： < / p >
< ul >
< li > User account是 为 人 设 计 的 ， 而 service account则 是 为 了 Pod中 的 进 程 ； < / li >
< li > User account是 跨 namespace的 ， 而 service account则 是 仅 局 限 它 所 在 的 namespace； < / li >
< li > < p > 开 启 ServiceAccount（ 默 认 开 启 ） 后 ， 每 个 namespace都 会 自 动 创 建 一 个 Service account， 并 会 相 应 的 secret挂 载 到 每 一 个 Pod中 < / p >
< ul >
< li > 默 认 ServiceAccount为 default， 自 动 关 联 一 个 访 问 kubernetes API的 < a href = "Secret.md" > Secret< / a > < / li >
< li > 每 个 Pod在 创 建 后 都 会 自 动 设 置 < code > spec.serviceAccount< / code > 为 default（ 除 非 指 定 了 其 他 ServiceAccout） < / li >
< li > 每 个 container启 动 后 都 会 挂 载 对 应 的 token和 < code > ca.crt< / code > 到 < code > /var/run/secrets/kubernetes.io/serviceaccount/< / code > < / li >
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< p > 当 然 了 ， 也 可 以 创 建 更 多 的 Service Account： < / p >
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< pre > < code > $ cat > /tmp/serviceaccount.yaml < < EOF
apiVersion: v1
kind: ServiceAccount
metadata:
name: build-robot
namespace: default
EOF
$ kubectl create -f /tmp/serviceaccount.yaml
serviceaccounts/build-robot
< / code > < / pre > < p > Service Account为 服 务 提 供 了 一 种 方 便 的 认 知 机 制 ， 但 它 不 关 心 授 权 的 问 题 。 可 以 配 合 < a href = "https://kubernetes.io/docs/admin/authorization/#a-quick-note-on-service-accounts" target = "_blank" > RBAC< / a > 来 为 Service Account鉴 权 ： < / p >
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< li > 配 置 < code > --authorization-mode=RBAC< / code > 和 < code > --runtime-config=rbac.authorization.k8s.io/v1alpha1< / code > < / li >
< li > 配 置 < code > --authorization-rbac-super-user=admin< / code > < / li >
< li > 定 义 Role、 ClusterRole、 RoleBinding或 ClusterRoleBinding< / li >
< / ul >
< p > 比 如 < / p >
< pre > < code class = "lang-yaml" > < span class = "hljs-comment" > # This role allows to read pods in the namespace " default" < / span >
< span class = "hljs-attr" > kind:< / span > Role
< span class = "hljs-attr" > apiVersion:< / span > rbac.authorization.k8s.io/v1alpha1
< span class = "hljs-attr" > metadata:< / span >
< span class = "hljs-attr" > namespace:< / span > default
< span class = "hljs-attr" > name:< / span > pod-reader
< span class = "hljs-attr" > rules:< / span >
< span class = "hljs-attr" > - apiGroups:< / span > [< span class = "hljs-string" > " " < / span > ] < span class = "hljs-comment" > # The API group " " indicates the core API Group.< / span >
< span class = "hljs-attr" > resources:< / span > [< span class = "hljs-string" > " pods" < / span > ]
< span class = "hljs-attr" > verbs:< / span > [< span class = "hljs-string" > " get" < / span > , < span class = "hljs-string" > " watch" < / span > , < span class = "hljs-string" > " list" < / span > ]
< span class = "hljs-attr" > nonResourceURLs:< / span > []
< span class = "hljs-meta" > ---< / span >
< span class = "hljs-comment" > # This role binding allows " default" to read pods in the namespace " default" < / span >
< span class = "hljs-attr" > kind:< / span > RoleBinding
< span class = "hljs-attr" > apiVersion:< / span > rbac.authorization.k8s.io/v1alpha1
< span class = "hljs-attr" > metadata:< / span >
< span class = "hljs-attr" > name:< / span > read-pods
< span class = "hljs-attr" > namespace:< / span > default
< span class = "hljs-attr" > subjects:< / span >
< span class = "hljs-attr" > - kind:< / span > ServiceAccount < span class = "hljs-comment" > # May be " User" , " Group" or " ServiceAccount" < / span >
< span class = "hljs-attr" > name:< / span > default
< span class = "hljs-attr" > roleRef:< / span >
< span class = "hljs-attr" > kind:< / span > Role
< span class = "hljs-attr" > name:< / span > pod-reader
< span class = "hljs-attr" > apiGroup:< / span > rbac.authorization.k8s.io
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