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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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4.3.8 使用Prometheus监控kubernetes集群
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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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< li class = "chapter " data-level = "1.4.4.2.1" data-path = "../practice/using-ceph-for-persistent-storage.html" >
< a href = "../practice/using-ceph-for-persistent-storage.html" >
4.4.2.1 使用Ceph做持久化存储
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< li class = "chapter " data-level = "1.5" data-path = "./" >
< a href = "./" >
5. 领域应用
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.5.1" data-path = "microservices.html" >
< a href = "microservices.html" >
5.1 微服务架构
< / a >
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< li class = "chapter " data-level = "1.5.1.1" data-path = "service-discovery-in-microservices.html" >
< a href = "service-discovery-in-microservices.html" >
5.1.1 微服务中的服务发现
< / a >
< / li >
< / ul >
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< li class = "chapter " data-level = "1.5.2" data-path = "service-mesh.html" >
< a href = "service-mesh.html" >
5.2 Service Mesh 服务网格
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.5.2.1" data-path = "istio.html" >
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< a href = "istio.html" >
5.1.1 Istio
< / a >
< ul class = "articles" >
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< li class = "chapter active" data-level = "1.5.2.1.1" data-path = "istio-installation.html" >
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< a href = "istio-installation.html" >
5.1.1.1 安装istio
< / a >
< / li >
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< li class = "chapter " data-level = "1.5.2.1.2" data-path = "configuring-request-routing.html" >
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< a href = "configuring-request-routing.html" >
5.1.1.2 配置请求的路由规则
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< li class = "chapter " data-level = "1.5.2.2" data-path = "linkerd.html" >
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< a href = "linkerd.html" >
5.1.2 Linkerd
< / a >
< ul class = "articles" >
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< li class = "chapter " data-level = "1.5.2.2.1" data-path = "linkerd-user-guide.html" >
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< a href = "linkerd-user-guide.html" >
5.1.2.1 Linkerd 使用指南
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< li class = "chapter " data-level = "1.5.3" data-path = "big-data.html" >
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< a href = "big-data.html" >
5.2 大数据
< / a >
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< li class = "chapter " data-level = "1.5.3.1" data-path = "spark-standalone-on-kubernetes.html" >
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< a href = "spark-standalone-on-kubernetes.html" >
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5.2.1 Spark standalone on Kubernetes
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< li class = "chapter " data-level = "1.5.3.2" data-path = "running-spark-with-kubernetes-native-scheduler.html" >
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< a href = "running-spark-with-kubernetes-native-scheduler.html" >
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5.2.2 运行支持kubernetes原生调度的Spark程序
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< li class = "chapter " data-level = "1.5.4" data-path = "serverless.html" >
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< a href = "serverless.html" >
5.3 Serverless架构
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< / li >
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< li class = "chapter " data-level = "1.6" data-path = "../develop/" >
< a href = "../develop/" >
6. 开发指南
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.6.1" data-path = "../develop/developing-environment.html" >
< a href = "../develop/developing-environment.html" >
6.1 开发环境搭建
< / a >
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< li class = "chapter " data-level = "1.6.2" data-path = "../develop/testing.html" >
< a href = "../develop/testing.html" >
6.2 单元测试和集成测试
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< li class = "chapter " data-level = "1.6.3" data-path = "../develop/client-go-sample.html" >
< a href = "../develop/client-go-sample.html" >
6.3 client-go示例
< / a >
< / li >
< li class = "chapter " data-level = "1.6.4" data-path = "../develop/contribute.html" >
< a href = "../develop/contribute.html" >
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7.1 Docker最佳实践
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< a href = "../appendix/issues.html" >
7.2 问题记录
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< a href = "../appendix/tricks.html" >
7.3 使用技巧
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< li class = "chapter " data-level = "1.7.4" data-path = "../appendix/debug-kubernetes-services.html" >
< a href = "../appendix/debug-kubernetes-services.html" >
7.4 kubernetes service中的故障排查
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< li >
< a href = "https://www.gitbook.com" target = "blank" class = "gitbook-link" >
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本书使用 GitBook 发布
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< div class = "book-body" >
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<!-- Title -->
< h1 >
< i class = "fa fa-circle-o-notch fa-spin" > < / i >
< a href = ".." > 5.1.1.1 安装istio< / a >
< / h1 >
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< div class = "page-wrapper" tabindex = "-1" role = "main" >
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< h1 id = "安装istio" > 安 装 istio< / h1 >
< p > 本 文 根 据 官 网 的 文 档 整 理 而 成 ， 步 骤 包 括 安 装 < code > istio 0.1.5< / code > 并 创 建 一 个 bookinfo的 微 服 务 来 测 试 istio的 功 能 。 < / p >
< p > 文 中 使 用 的 yaml文 件 可 以 在 < a href = "https://github.com/rootsongjc/kubernetes-handbook" target = "_blank" > kubernetes-handbook< / a > 的 < code > manifests/istio< / code > 目 录 中 找 到 ， 所 有 的 镜 像 都 换 成 了 我 的 私 有 镜 像 仓 库 地 址 ， 请 根 据 官 网 的 镜 像 自 行 修 改 。 < / p >
< h2 id = "安装环境" > 安 装 环 境 < / h2 >
< ul >
< li > CentOS 7.3.1611< / li >
< li > Docker 1.12.6< / li >
< li > Kubernetes 1.6.0< / li >
< / ul >
< h2 id = "安装" > 安 装 < / h2 >
< p > < strong > 1.下 载 安 装 包 < / strong > < / p >
< p > 下 载 地 址 ： < a href = "https://github.com/istio/istio/releases" target = "_blank" > https://github.com/istio/istio/releases< / a > < / p >
< p > 下 载 Linux版 本 的 当 前 最 新 版 安 装 包 < / p >
< pre > < code class = "lang-Shell" > wget https://github.com/istio/istio/releases/download/0.1.5/istio-0.1.5-linux.tar.gz
< / code > < / pre >
< p > < strong > 2.解 压 < / strong > < / p >
< p > 解 压 后 ， 得 到 的 目 录 结 构 如 下 ： < / p >
< pre > < code > .
├ ─ ─ bin
│ └ ─ ─ istioctl
├ ─ ─ install
│ └ ─ ─ kubernetes
│ ├ ─ ─ addons
│ │ ├ ─ ─ grafana.yaml
│ │ ├ ─ ─ prometheus.yaml
│ │ ├ ─ ─ servicegraph.yaml
│ │ └ ─ ─ zipkin.yaml
│ ├ ─ ─ istio-auth.yaml
│ ├ ─ ─ istio-rbac-alpha.yaml
│ ├ ─ ─ istio-rbac-beta.yaml
│ ├ ─ ─ istio.yaml
│ ├ ─ ─ README.md
│ └ ─ ─ templates
│ ├ ─ ─ istio-auth
│ │ ├ ─ ─ istio-auth-with-cluster-ca.yaml
│ │ ├ ─ ─ istio-cluster-ca.yaml
│ │ ├ ─ ─ istio-egress-auth.yaml
│ │ ├ ─ ─ istio-ingress-auth.yaml
│ │ └ ─ ─ istio-namespace-ca.yaml
│ ├ ─ ─ istio-egress.yaml
│ ├ ─ ─ istio-ingress.yaml
│ ├ ─ ─ istio-manager.yaml
│ └ ─ ─ istio-mixer.yaml
├ ─ ─ istio.VERSION
├ ─ ─ LICENSE
└ ─ ─ samples
├ ─ ─ apps
│ ├ ─ ─ bookinfo
│ │ ├ ─ ─ bookinfo.yaml
│ │ ├ ─ ─ cleanup.sh
│ │ ├ ─ ─ destination-ratings-test-delay.yaml
│ │ ├ ─ ─ loadbalancing-policy-reviews.yaml
│ │ ├ ─ ─ mixer-rule-additional-telemetry.yaml
│ │ ├ ─ ─ mixer-rule-empty-rule.yaml
│ │ ├ ─ ─ mixer-rule-ratings-denial.yaml
│ │ ├ ─ ─ mixer-rule-ratings-ratelimit.yaml
│ │ ├ ─ ─ README.md
│ │ ├ ─ ─ route-rule-all-v1.yaml
│ │ ├ ─ ─ route-rule-delay.yaml
│ │ ├ ─ ─ route-rule-reviews-50-v3.yaml
│ │ ├ ─ ─ route-rule-reviews-test-v2.yaml
│ │ ├ ─ ─ route-rule-reviews-v2-v3.yaml
│ │ └ ─ ─ route-rule-reviews-v3.yaml
│ ├ ─ ─ httpbin
│ │ ├ ─ ─ httpbin.yaml
│ │ └ ─ ─ README.md
│ └ ─ ─ sleep
│ ├ ─ ─ README.md
│ └ ─ ─ sleep.yaml
└ ─ ─ README.md
11 directories, 41 files
< / code > < / pre > < p > 从 文 件 里 表 中 可 以 看 到 ， 安 装 包 中 包 括 了 kubernetes的 yaml文 件 ， 示 例 应 用 和 安 装 模 板 。 < / p >
< p > < strong > 3.安 装 istioctl< / strong > < / p >
< p > 将 < code > ./bin/istioctl< / code > 拷 贝 到 你 的 < code > $PATH< / code > 目 录 下 。 < / p >
< p > < strong > 4.检 查 RBAC< / strong > < / p >
< p > 因 为 我 们 安 装 的 kuberentes版 本 是 1.6.0默 认 支 持 RBAC， 这 一 步 可 以 跳 过 。 如 果 你 使 用 的 其 他 版 本 的 kubernetes， 请 参 考 < a href = "https://istio.io/docs/tasks/installing-istio.html" target = "_blank" > 官 方 文 档 < / a > 操 作 。 < / p >
< p > 执 行 以 下 命 令 ， 正 确 的 输 出 是 这 样 的 ： < / p >
< pre > < code class = "lang-bash" > $ kubectl api-versions | grep rbac
rbac.authorization.k8s.io/v1alpha1
rbac.authorization.k8s.io/v1beta1
< / code > < / pre >
< p > < strong > 5.创 建 角 色 绑 定 < / strong > < / p >
< pre > < code class = "lang-bash" > $ kubectl create < span class = "hljs-_" > -f< / span > install/kubernetes/istio-rbac-beta.yaml
clusterrole < span class = "hljs-string" > " istio-manager" < / span > created
clusterrole < span class = "hljs-string" > " istio-ca" < / span > created
clusterrole < span class = "hljs-string" > " istio-sidecar" < / span > created
clusterrolebinding < span class = "hljs-string" > " istio-manager-admin-role-binding" < / span > created
clusterrolebinding < span class = "hljs-string" > " istio-ca-role-binding" < / span > created
clusterrolebinding < span class = "hljs-string" > " istio-ingress-admin-role-binding" < / span > created
clusterrolebinding < span class = "hljs-string" > " istio-sidecar-role-binding" < / span > created
< / code > < / pre >
< p > 注 意 ： 官 网 的 安 装 包 中 的 该 文 件 中 存 在 RoleBinding错 误 ， 应 该 是 集 群 级 别 的 < code > clusterrolebinding< / code > ， 而 release里 的 代 码 只 是 普 通 的 < code > rolebinding< / code > ， 查 看 该 Issue < a href = "https://github.com/istio/istio/issues/327" target = "_blank" > Istio manager cannot list of create k8s TPR when RBAC enabled #327< / a > 。 < / p >
< p > < strong > 6.安 装 istio核 心 组 件 < / strong > < / p >
< p > 用 到 的 镜 像 有 ： < / p >
< pre > < code > docker.io/istio/mixer:0.1.5
docker.io/istio/manager:0.1.5
docker.io/istio/proxy_debug:0.1.5
< / code > < / pre > < p > 我 们 暂 时 不 开 启 < a href = "https://istio.io/docs/concepts/network-and-auth/auth.html" target = "_blank" > Istio Auth< / a > 。 < / p >
< blockquote >
< p > 本 文 中 用 到 的 所 有 yaml文 件 中 的 < code > type: LoadBalancer< / code > 去 掉 ， 使 用 默 认 的 ClusterIP， 然 后 配 置 Traefik ingress， 就 可 以 在 集 群 外 部 访 问 。 请 参 考 < a href = "practice/traefik-ingress-installation.md" > 安 装 Traefik ingress< / a > 。 < / p >
< / blockquote >
< pre > < code class = "lang-bash" > kubectl apply < span class = "hljs-_" > -f< / span > install/kubernetes/istio.yaml
< / code > < / pre >
< p > < strong > 7.安 装 监 控 插 件 < / strong > < / p >
< p > 用 到 的 镜 像 有 ： < / p >
< pre > < code > docker.io/istio/grafana:0.1.5
quay.io/coreos/prometheus:v1.1.1
gcr.io/istio-testing/servicegraph:latest
docker.io/openzipkin/zipkin:latest
< / code > < / pre > < p > 为 了 方 便 下 载 ， 其 中 两 个 镜 像 我 备 份 到 了 时 速 云 ： < / p >
< pre > < code > index.tenxcloud.com/jimmy/prometheus:v1.1.1
index.tenxcloud.com/jimmy/servicegraph:latest
< / code > < / pre > < p > 安 装 插 件 < / p >
< pre > < code class = "lang-bash" > kubectl apply < span class = "hljs-_" > -f< / span > install/kubernetes/addons/prometheus.yaml
kubectl apply < span class = "hljs-_" > -f< / span > install/kubernetes/addons/grafana.yaml
kubectl apply < span class = "hljs-_" > -f< / span > install/kubernetes/addons/servicegraph.yaml
kubectl apply < span class = "hljs-_" > -f< / span > install/kubernetes/addons/zipkin.yaml
< / code > < / pre >
< p > 在 traefik ingress中 增 加 增 加 以 上 几 个 服 务 的 配 置 ， 同 时 增 加 istio-ingress配 置 。 < / p >
< pre > < code class = "lang-Yaml" > < span class = "hljs-attr" > - host:< / span > grafana.istio.io
< span class = "hljs-attr" > http:< / span >
< span class = "hljs-attr" > paths:< / span >
< span class = "hljs-attr" > - path:< / span > /
< span class = "hljs-attr" > backend:< / span >
< span class = "hljs-attr" > serviceName:< / span > grafana
< span class = "hljs-attr" > servicePort:< / span > < span class = "hljs-number" > 3000< / span >
< span class = "hljs-attr" > - host:< / span > servicegraph.istio.io
< span class = "hljs-attr" > http:< / span >
< span class = "hljs-attr" > paths:< / span >
< span class = "hljs-attr" > - path:< / span > /
< span class = "hljs-attr" > backend:< / span >
< span class = "hljs-attr" > serviceName:< / span > servicegraph
< span class = "hljs-attr" > servicePort:< / span > < span class = "hljs-number" > 8088< / span >
< span class = "hljs-attr" > - host:< / span > prometheus.istio.io
< span class = "hljs-attr" > http:< / span >
< span class = "hljs-attr" > paths:< / span >
< span class = "hljs-attr" > - path:< / span > /
< span class = "hljs-attr" > backend:< / span >
< span class = "hljs-attr" > serviceName:< / span > prometheus
< span class = "hljs-attr" > servicePort:< / span > < span class = "hljs-number" > 9090< / span >
< span class = "hljs-attr" > - host:< / span > zipkin.istio.io
< span class = "hljs-attr" > http:< / span >
< span class = "hljs-attr" > paths:< / span >
< span class = "hljs-attr" > - path:< / span > /
< span class = "hljs-attr" > backend:< / span >
< span class = "hljs-attr" > serviceName:< / span > zipkin
< span class = "hljs-attr" > servicePort:< / span > < span class = "hljs-number" > 9411< / span >
< span class = "hljs-attr" > - host:< / span > ingress.istio.io
< span class = "hljs-attr" > http:< / span >
< span class = "hljs-attr" > paths:< / span >
< span class = "hljs-attr" > - path:< / span > /
< span class = "hljs-attr" > backend:< / span >
< span class = "hljs-attr" > serviceName:< / span > istio-ingress
< span class = "hljs-attr" > servicePort:< / span > < span class = "hljs-number" > 80< / span >
< / code > < / pre >
< h2 id = "测试" > 测 试 < / h2 >
< p > 我 们 使 用 Istio提 供 的 测 试 应 用 < a href = "https://istio.io/docs/samples/bookinfo.html" target = "_blank" > bookinfo< / a > 微 服 务 来 进 行 测 试 。 < / p >
< p > 该 微 服 务 用 到 的 镜 像 有 ： < / p >
< pre > < code > istio/examples-bookinfo-details-v1
istio/examples-bookinfo-ratings-v1
istio/examples-bookinfo-reviews-v1
istio/examples-bookinfo-reviews-v2
istio/examples-bookinfo-reviews-v3
istio/examples-bookinfo-productpage-v1
< / code > < / pre > < p > 该 应 用 架 构 图 如 下 ： < / p >
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< figure id = "fig1.5.2.1.1.1" > < img src = "../images/bookinfo-sample-arch.png" alt = "BookInfo Sample应用架构图" > < figcaption > Figure: BookInfo Sample应 用 架 构 图 < / figcaption > < / figure >
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< p > < strong > 部 署 应 用 < / strong > < / p >
< pre > < code > kubectl create -f < (istioctl kube-inject -f samples/apps/bookinfo/bookinfo.yaml)
< / code > < / pre > < p > < code > Istio kube-inject< / code > 命 令 会 在 < code > bookinfo.yaml< / code > 文 件 中 增 加 Envoy sidecar信 息 。 参 考 ： < a href = "https://istio.io/docs/reference/commands/istioctl.html#istioctl-kube-inject" target = "_blank" > https://istio.io/docs/reference/commands/istioctl.html#istioctl-kube-inject< / a > < / p >
< p > 在 本 机 的 < code > /etc/hosts< / code > 下 增 加 VIP节 点 和 < code > ingress.istio.io< / code > 的 对 应 信 息 。 具 体 步 骤 参 考 ： < a href = "../practice/edge-node-configuration.html" > 边 缘 节 点 配 置 < / a > < / p >
< p > 在 浏 览 器 中 访 问 < a href = "http://ingress.istio.io/productpage" target = "_blank" > http://ingress.istio.io/productpage< / a > < / p >
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< figure id = "fig1.5.2.1.1.2" > < img src = "../images/bookinfo-sample.jpg" alt = "BookInfo Sample页面" > < figcaption > Figure: BookInfo Sample页 面 < / figcaption > < / figure >
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< p > 多 次 刷 新 页 面 ， 你 会 发 现 有 的 页 面 上 的 评 论 里 有 星 级 打 分 ， 有 的 页 面 就 没 有 ， 这 是 因 为 我 们 部 署 了 三 个 版 本 的 应 用 ， 有 的 应 用 里 包 含 了 评 分 ， 有 的 没 有 。 Istio根 据 默 认 策 略 随 机 将 流 量 分 配 到 三 个 版 本 的 应 用 上 。 < / p >
< p > 查 看 部 署 的 bookinfo应 用 中 的 < code > productpage-v1< / code > service和 deployment， 查 看 < code > productpage-v1< / code > 的 pod的 详 细 json信 息 可 以 看 到 这 样 的 结 构 ： < / p >
< pre > < code class = "lang-bash" > $ kubectl get productpage-v1-944450470-bd530 -o json
< / code > < / pre >
< p > 见 < a href = "../manifests/istio/productpage-v1-istio.json" > productpage-v1-istio.json< / a > 文 件 。 从 详 细 输 出 中 可 以 看 到 这 个 Pod中 实 际 有 两 个 容 器 ， 这 里 面 包 括 了 < code > initContainer< / code > ， 作 为 istio植 入 到 kubernetes deployment中 的 sidecar。 < / p >
< pre > < code class = "lang-json" > < span class = "hljs-string" > " initContainers" < / span > : [
{
< span class = "hljs-string" > " args" < / span > : [
< span class = "hljs-string" > " -p" < / span > ,
< span class = "hljs-string" > " 15001" < / span > ,
< span class = "hljs-string" > " -u" < / span > ,
< span class = "hljs-string" > " 1337" < / span >
],
< span class = "hljs-string" > " image" < / span > : < span class = "hljs-string" > " docker.io/istio/init:0.1" < / span > ,
< span class = "hljs-string" > " imagePullPolicy" < / span > : < span class = "hljs-string" > " Always" < / span > ,
< span class = "hljs-string" > " name" < / span > : < span class = "hljs-string" > " init" < / span > ,
< span class = "hljs-string" > " resources" < / span > : {},
< span class = "hljs-string" > " securityContext" < / span > : {
< span class = "hljs-string" > " capabilities" < / span > : {
< span class = "hljs-string" > " add" < / span > : [
< span class = "hljs-string" > " NET_ADMIN" < / span >
]
}
},
< span class = "hljs-string" > " terminationMessagePath" < / span > : < span class = "hljs-string" > " /dev/termination-log" < / span > ,
< span class = "hljs-string" > " terminationMessagePolicy" < / span > : < span class = "hljs-string" > " File" < / span > ,
< span class = "hljs-string" > " volumeMounts" < / span > : [
{
< span class = "hljs-string" > " mountPath" < / span > : < span class = "hljs-string" > " /var/run/secrets/kubernetes.io/serviceaccount" < / span > ,
< span class = "hljs-string" > " name" < / span > : < span class = "hljs-string" > " default-token-3l9f0" < / span > ,
< span class = "hljs-string" > " readOnly" < / span > : < span class = "hljs-literal" > true< / span >
}
]
},
{
< span class = "hljs-string" > " args" < / span > : [
< span class = "hljs-string" > " -c" < / span > ,
< span class = "hljs-string" > " sysctl -w kernel.core_pattern=/tmp/core.%e.%p.%t \u0026\u0026 ulimit -c unlimited" < / span >
],
< span class = "hljs-string" > " command" < / span > : [
< span class = "hljs-string" > " /bin/sh" < / span >
],
< span class = "hljs-string" > " image" < / span > : < span class = "hljs-string" > " alpine" < / span > ,
< span class = "hljs-string" > " imagePullPolicy" < / span > : < span class = "hljs-string" > " Always" < / span > ,
< span class = "hljs-string" > " name" < / span > : < span class = "hljs-string" > " enable-core-dump" < / span > ,
< span class = "hljs-string" > " resources" < / span > : {},
< span class = "hljs-string" > " securityContext" < / span > : {
< span class = "hljs-string" > " privileged" < / span > : < span class = "hljs-literal" > true< / span >
},
< span class = "hljs-string" > " terminationMessagePath" < / span > : < span class = "hljs-string" > " /dev/termination-log" < / span > ,
< span class = "hljs-string" > " terminationMessagePolicy" < / span > : < span class = "hljs-string" > " File" < / span > ,
< span class = "hljs-string" > " volumeMounts" < / span > : [
{
< span class = "hljs-string" > " mountPath" < / span > : < span class = "hljs-string" > " /var/run/secrets/kubernetes.io/serviceaccount" < / span > ,
< span class = "hljs-string" > " name" < / span > : < span class = "hljs-string" > " default-token-3l9f0" < / span > ,
< span class = "hljs-string" > " readOnly" < / span > : < span class = "hljs-literal" > true< / span >
}
]
}
],
< / code > < / pre >
< h2 id = "监控" > 监 控 < / h2 >
< p > 不 断 刷 新 productpage页 面 ， 将 可 以 在 以 下 几 个 监 控 中 看 到 如 下 界 面 。 < / p >
< p > < strong > Grafana页 面 < / strong > < / p >
< p > < a href = "http://grafana.istio.io" target = "_blank" > http://grafana.istio.io< / a > < / p >
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< figure id = "fig1.5.2.1.1.3" > < img src = "../images/istio-grafana.jpg" alt = "Istio Grafana界面" > < figcaption > Figure: Istio Grafana界 面 < / figcaption > < / figure >
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< p > < strong > Prometheus页 面 < / strong > < / p >
< p > < a href = "http://prometheus.istio.io" target = "_blank" > http://prometheus.istio.io< / a > < / p >
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< figure id = "fig1.5.2.1.1.4" > < img src = "../images/istio-prometheus.jpg" alt = "Prometheus页面" > < figcaption > Figure: Prometheus页 面 < / figcaption > < / figure >
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< p > < strong > Zipkin页 面 < / strong > < / p >
< p > < a href = "http://zipkin.istio.io" target = "_blank" > http://zipkin.istio.io< / a > < / p >
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< figure id = "fig1.5.2.1.1.5" > < img src = "../images/istio-zipkin.jpg" alt = "Zipkin页面" > < figcaption > Figure: Zipkin页 面 < / figcaption > < / figure >
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< p > < strong > ServiceGraph页 面 < / strong > < / p >
< p > < a href = "http://servicegraph.istio.io/dotviz" target = "_blank" > http://servicegraph.istio.io/dotviz< / a > < / p >
< p > 可 以 用 来 查 看 服 务 间 的 依 赖 关 系 。 < / p >
< p > 访 问 < a href = "http://servicegraph.istio.io/graph可以获得json格式的返回结果。" target = "_blank" > http://servicegraph.istio.io/graph可 以 获 得 json格 式 的 返 回 结 果 。 < / a > < / p >
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< figure id = "fig1.5.2.1.1.6" > < img src = "../images/istio-servicegraph.jpg" alt = "ServiceGraph页面" > < figcaption > Figure: ServiceGraph页 面 < / figcaption > < / figure >
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< h2 id = "更进一步" > 更 进 一 步 < / h2 >
< p > BookInfo示 例 中 有 三 个 版 本 的 < code > reviews< / code > ， 可 以 使 用 istio来 配 置 路 由 请 求 ， 将 流 量 分 摊 到 不 同 版 本 的 应 用 上 。 参 考 < a href = "https://istio.io/docs/tasks/request-routing.html" target = "_blank" > Configuring Request Routing< / a > 。 < / p >
< p > 还 有 一 些 更 高 级 的 功 能 ， 我 们 后 续 将 进 一 步 探 索 。 < / p >
< h2 id = "参考" > 参 考 < / h2 >
< p > < a href = "https://istio.io/docs/tasks/installing-istio.html" target = "_blank" > Installing Istio< / a > < / p >
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< p > < a href = "https://istio.io/docs/samples/bookinfo.html" target = "_blank" > BookInfo sample< / a > < / p >
< footer class = "page-footer-ex" > < span class = "page-footer-ex-copyright" > © All Rights Reserved < / span >                     < span class = "page-footer-ex-footer-update" > updated 2017-08-21 18:23:35 < / span > < / footer >
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