2017-08-21 17:44:43 +08:00
<!DOCTYPE HTML>
< html lang = "zh-cn" >
< head >
< meta charset = "UTF-8" >
< meta content = "text/html; charset=utf-8" http-equiv = "Content-Type" >
< title > 3.4.4 使用 service 访问群集中的应用程序 · Kubernetes Handbook< / title >
< meta http-equiv = "X-UA-Compatible" content = "IE=edge" / >
< meta name = "description" content = "" >
< meta name = "generator" content = "GitBook 3.2.2" >
< meta name = "author" content = "Jimmy Song" >
< link rel = "stylesheet" href = "../gitbook/style.css" >
< link rel = "stylesheet" href = "../gitbook/gitbook-plugin-splitter/splitter.css" >
< link rel = "stylesheet" href = "../gitbook/gitbook-plugin-page-toc-button/plugin.css" >
< link rel = "stylesheet" href = "../gitbook/gitbook-plugin-image-captions/image-captions.css" >
< link rel = "stylesheet" href = "../gitbook/gitbook-plugin-page-footer-ex/style/plugin.css" >
< link rel = "stylesheet" href = "../gitbook/gitbook-plugin-search-plus/search.css" >
< link rel = "stylesheet" href = "../gitbook/gitbook-plugin-highlight/website.css" >
< link rel = "stylesheet" href = "../gitbook/gitbook-plugin-fontsettings/website.css" >
< meta name = "HandheldFriendly" content = "true" / >
< meta name = "viewport" content = "width=device-width, initial-scale=1, user-scalable=no" >
< meta name = "apple-mobile-web-app-capable" content = "yes" >
< meta name = "apple-mobile-web-app-status-bar-style" content = "black" >
< link rel = "apple-touch-icon-precomposed" sizes = "152x152" href = "../gitbook/images/apple-touch-icon-precomposed-152.png" >
< link rel = "shortcut icon" href = "../gitbook/images/favicon.ico" type = "image/x-icon" >
< link rel = "next" href = "application-development-deployment-flow.html" / >
< link rel = "prev" href = "connecting-to-applications-port-forward.html" / >
< / head >
< body >
< div class = "book" >
< div class = "book-summary" >
< div id = "book-search-input" role = "search" >
< input type = "text" placeholder = "輸入並搜尋" / >
< / div >
< nav role = "navigation" >
< ul class = "summary" >
< li class = "chapter " data-level = "1.1" data-path = "../" >
< a href = "../" >
1. 前言
< / a >
< / li >
< li class = "chapter " data-level = "1.2" data-path = "../concepts/" >
< a href = "../concepts/" >
2. 概念原理
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.2.1" data-path = "../concepts/concepts.html" >
< a href = "../concepts/concepts.html" >
2.1 设计理念
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2" data-path = "../concepts/objects.html" >
< a href = "../concepts/objects.html" >
2.2 主要概念
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.2.2.1" data-path = "../concepts/pod-overview.html" >
< a href = "../concepts/pod-overview.html" >
2.2.1 Pod
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.2.2.1.1" data-path = "../concepts/pod.html" >
< a href = "../concepts/pod.html" >
2.2.1.1 Pod解析
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.2.2.2" data-path = "../concepts/node.html" >
< a href = "../concepts/node.html" >
2.2.2 Node
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.3" data-path = "../concepts/namespace.html" >
< a href = "../concepts/namespace.html" >
2.2.3 Namespace
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.4" data-path = "../concepts/service.html" >
< a href = "../concepts/service.html" >
2.2.4 Service
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.5" data-path = "../concepts/volume.html" >
< a href = "../concepts/volume.html" >
2.2.5 Volume和Persistent Volume
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.6" data-path = "../concepts/deployment.html" >
< a href = "../concepts/deployment.html" >
2.2.6 Deployment
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.7" data-path = "../concepts/secret.html" >
< a href = "../concepts/secret.html" >
2.2.7 Secret
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.8" data-path = "../concepts/statefulset.html" >
< a href = "../concepts/statefulset.html" >
2.2.8 StatefulSet
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.9" data-path = "../concepts/daemonset.html" >
< a href = "../concepts/daemonset.html" >
2.2.9 DaemonSet
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.10" data-path = "../concepts/serviceaccount.html" >
< a href = "../concepts/serviceaccount.html" >
2.2.10 ServiceAccount
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.11" data-path = "../concepts/replicaset.html" >
< a href = "../concepts/replicaset.html" >
2.2.11 ReplicationController和ReplicaSet
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.12" data-path = "../concepts/job.html" >
< a href = "../concepts/job.html" >
2.2.12 Job
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.13" data-path = "../concepts/cronjob.html" >
< a href = "../concepts/cronjob.html" >
2.2.13 CronJob
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.14" data-path = "../concepts/ingress.html" >
< a href = "../concepts/ingress.html" >
2.2.14 Ingress
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.15" data-path = "../concepts/configmap.html" >
< a href = "../concepts/configmap.html" >
2.2.15 ConfigMap
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.16" data-path = "../concepts/horizontal-pod-autoscaling.html" >
< a href = "../concepts/horizontal-pod-autoscaling.html" >
2.2.16 Horizontal Pod Autoscaling
< / a >
< / li >
< li class = "chapter " data-level = "1.2.2.17" data-path = "../concepts/label.html" >
< a href = "../concepts/label.html" >
2.2.17 Label
< / a >
< / li >
< / ul >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.3" data-path = "./" >
< a href = "./" >
3. 用户指南
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.3.1" data-path = "resource-configuration.html" >
< a href = "resource-configuration.html" >
3.1 资源配置
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.3.1.1" data-path = "configure-liveness-readiness-probes.html" >
< a href = "configure-liveness-readiness-probes.html" >
3.1.1 配置Pod的liveness和readiness探针
< / a >
< / li >
< li class = "chapter " data-level = "1.3.1.2" data-path = "configure-pod-service-account.html" >
< a href = "configure-pod-service-account.html" >
3.1.2 配置Pod的Service Account
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.3.2" data-path = "command-usage.html" >
< a href = "command-usage.html" >
3.2 命令使用
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.3.2.1" data-path = "using-kubectl.html" >
< a href = "using-kubectl.html" >
3.2.1 使用kubectl
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.3.3" data-path = "cluster-management.html" >
< a href = "cluster-management.html" >
3.3 集群管理
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.3.3.1" data-path = "managing-tls-in-a-cluster.html" >
< a href = "managing-tls-in-a-cluster.html" >
3.3.1 管理集群中的TLS
< / a >
2017-08-21 18:44:34 +08:00
< / li >
< li class = "chapter " data-level = "1.3.3.2" data-path = "kubelet-authentication-authorization.html" >
< a href = "kubelet-authentication-authorization.html" >
3.3.2 kubelet的认证授权
< / a >
< / li >
< li class = "chapter " data-level = "1.3.3.3" data-path = "tls-bootstrapping.html" >
< a href = "tls-bootstrapping.html" >
3.3.3 TLS bootstrap
< / a >
2017-08-21 17:44:43 +08:00
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.3.4" data-path = "access-kubernetes-cluster.html" >
< a href = "access-kubernetes-cluster.html" >
3.4 访问 Kubernetes 集群
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.3.4.1" data-path = "access-cluster.html" >
< a href = "access-cluster.html" >
3.4.1 访问集群
< / a >
< / li >
< li class = "chapter " data-level = "1.3.4.2" data-path = "authenticate-across-clusters-kubeconfig.html" >
< a href = "authenticate-across-clusters-kubeconfig.html" >
3.4.2 使用 kubeconfig 文件配置跨集群认证
< / a >
< / li >
< li class = "chapter " data-level = "1.3.4.3" data-path = "connecting-to-applications-port-forward.html" >
< a href = "connecting-to-applications-port-forward.html" >
3.4.3 通过端口转发访问集群中的应用程序
< / a >
< / li >
< li class = "chapter active" data-level = "1.3.4.4" data-path = "service-access-application-cluster.html" >
< a href = "service-access-application-cluster.html" >
3.4.4 使用 service 访问群集中的应用程序
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.3.5" data-path = "application-development-deployment-flow.html" >
< a href = "application-development-deployment-flow.html" >
3.5 在kubernetes中开发部署应用
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.3.5.1" data-path = "deploy-applications-in-kubernetes.html" >
< a href = "deploy-applications-in-kubernetes.html" >
3.5.1 适用于kubernetes的应用开发部署流程
< / a >
2017-08-21 18:44:34 +08:00
< / li >
< li class = "chapter " data-level = "1.3.5.2" data-path = "migrating-hadoop-yarn-to-kubernetes.html" >
< a href = "migrating-hadoop-yarn-to-kubernetes.html" >
3.5.2 迁移传统应用到kubernetes中——以Hadoop YARN为例
< / a >
2017-08-21 17:44:43 +08:00
< / li >
< / ul >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.4" data-path = "../practice/" >
< a href = "../practice/" >
4. 最佳实践
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.4.1" data-path = "../practice/install-kbernetes1.6-on-centos.html" >
< a href = "../practice/install-kbernetes1.6-on-centos.html" >
4.1 在CentOS上部署kubernetes1.6集群
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.4.1.1" data-path = "../practice/create-tls-and-secret-key.html" >
< a href = "../practice/create-tls-and-secret-key.html" >
4.1.1 创建TLS证书和秘钥
< / a >
< / li >
< li class = "chapter " data-level = "1.4.1.2" data-path = "../practice/create-kubeconfig.html" >
< a href = "../practice/create-kubeconfig.html" >
4.1.2 创建kubeconfig文件
< / a >
< / li >
< li class = "chapter " data-level = "1.4.1.3" data-path = "../practice/etcd-cluster-installation.html" >
< a href = "../practice/etcd-cluster-installation.html" >
4.1.3 创建高可用etcd集群
< / a >
< / li >
< li class = "chapter " data-level = "1.4.1.4" data-path = "../practice/kubectl-installation.html" >
< a href = "../practice/kubectl-installation.html" >
4.1.4 安装kubectl命令行工具
< / a >
< / li >
< li class = "chapter " data-level = "1.4.1.5" data-path = "../practice/master-installation.html" >
< a href = "../practice/master-installation.html" >
4.1.5 部署master节点
< / a >
< / li >
< li class = "chapter " data-level = "1.4.1.6" data-path = "../practice/node-installation.html" >
< a href = "../practice/node-installation.html" >
4.1.6 部署node节点
< / a >
< / li >
< li class = "chapter " data-level = "1.4.1.7" data-path = "../practice/kubedns-addon-installation.html" >
< a href = "../practice/kubedns-addon-installation.html" >
4.1.7 安装kubedns插件
< / a >
< / li >
< li class = "chapter " data-level = "1.4.1.8" data-path = "../practice/dashboard-addon-installation.html" >
< a href = "../practice/dashboard-addon-installation.html" >
4.1.8 安装dashboard插件
< / a >
< / li >
< li class = "chapter " data-level = "1.4.1.9" data-path = "../practice/heapster-addon-installation.html" >
< a href = "../practice/heapster-addon-installation.html" >
4.1.9 安装heapster插件
< / a >
< / li >
< li class = "chapter " data-level = "1.4.1.10" data-path = "../practice/efk-addon-installation.html" >
< a href = "../practice/efk-addon-installation.html" >
4.1.10 安装EFK插件
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.4.2" data-path = "../practice/service-discovery-and-loadbalancing.html" >
< a href = "../practice/service-discovery-and-loadbalancing.html" >
4.2 服务发现与负载均衡
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.4.2.1" data-path = "../practice/traefik-ingress-installation.html" >
< a href = "../practice/traefik-ingress-installation.html" >
4.2.1 安装Traefik ingress
< / a >
< / li >
< li class = "chapter " data-level = "1.4.2.2" data-path = "../practice/distributed-load-test.html" >
< a href = "../practice/distributed-load-test.html" >
4.2.2 分布式负载测试
< / a >
< / li >
< li class = "chapter " data-level = "1.4.2.3" data-path = "../practice/network-and-cluster-perfermance-test.html" >
< a href = "../practice/network-and-cluster-perfermance-test.html" >
4.2.3 网络和集群性能测试
< / a >
< / li >
< li class = "chapter " data-level = "1.4.2.4" data-path = "../practice/edge-node-configuration.html" >
< a href = "../practice/edge-node-configuration.html" >
4.2.4 边缘节点配置
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.4.3" data-path = "../practice/operation.html" >
< a href = "../practice/operation.html" >
4.3 运维管理
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.4.3.1" data-path = "../practice/service-rolling-update.html" >
< a href = "../practice/service-rolling-update.html" >
4.3.1 服务滚动升级
< / a >
< / li >
< li class = "chapter " data-level = "1.4.3.2" data-path = "../practice/app-log-collection.html" >
< a href = "../practice/app-log-collection.html" >
4.3.2 应用日志收集
< / a >
< / li >
< li class = "chapter " data-level = "1.4.3.3" data-path = "../practice/configuration-best-practice.html" >
< a href = "../practice/configuration-best-practice.html" >
4.3.3 配置最佳实践
< / a >
< / li >
< li class = "chapter " data-level = "1.4.3.4" data-path = "../practice/monitor.html" >
< a href = "../practice/monitor.html" >
4.3.4 集群及应用监控
< / a >
< / li >
< li class = "chapter " data-level = "1.4.3.5" data-path = "../practice/jenkins-ci-cd.html" >
< a href = "../practice/jenkins-ci-cd.html" >
4.3.5 使用Jenkins进行持续构建与发布
< / a >
< / li >
< li class = "chapter " data-level = "1.4.3.6" data-path = "../practice/data-persistence-problem.html" >
< a href = "../practice/data-persistence-problem.html" >
4.3.6 数据持久化问题
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.4.4" data-path = "../practice/storage.html" >
< a href = "../practice/storage.html" >
4.4 存储管理
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.4.4.1" data-path = "../practice/glusterfs.html" >
< a href = "../practice/glusterfs.html" >
4.4.1 GlusterFS
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.4.4.1.1" data-path = "../practice/using-glusterfs-for-persistent-storage.html" >
< a href = "../practice/using-glusterfs-for-persistent-storage.html" >
4.4.1.1 使用GlusterFS做持久化存储
< / a >
< / li >
< li class = "chapter " data-level = "1.4.4.1.2" data-path = "../practice/storage-for-containers-using-glusterfs-with-openshift.html" >
< a href = "../practice/storage-for-containers-using-glusterfs-with-openshift.html" >
4.4.1.2 在OpenShift中使用GlusterFS做持久化存储
< / a >
< / li >
< / ul >
< / li >
< / ul >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.5" data-path = "../usecases/" >
< a href = "../usecases/" >
5. 领域应用
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.5.1" data-path = "../usecases/microservices.html" >
< a href = "../usecases/microservices.html" >
5.1 微服务架构
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.5.1.1" data-path = "../usecases/istio.html" >
< a href = "../usecases/istio.html" >
5.1.1 Istio
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.5.1.1.1" data-path = "../usecases/istio-installation.html" >
< a href = "../usecases/istio-installation.html" >
5.1.1.1 安装istio
< / a >
< / li >
< li class = "chapter " data-level = "1.5.1.1.2" data-path = "../usecases/configuring-request-routing.html" >
< a href = "../usecases/configuring-request-routing.html" >
5.1.1.2 配置请求的路由规则
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.5.1.2" data-path = "../usecases/linkerd.html" >
< a href = "../usecases/linkerd.html" >
5.1.2 Linkerd
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.5.1.2.1" data-path = "../usecases/linkerd-user-guide.html" >
< a href = "../usecases/linkerd-user-guide.html" >
5.1.2.1 Linkerd 使用指南
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.5.1.3" data-path = "../usecases/service-discovery-in-microservices.html" >
< a href = "../usecases/service-discovery-in-microservices.html" >
5.1.3 微服务中的服务发现
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.5.2" data-path = "../usecases/big-data.html" >
< a href = "../usecases/big-data.html" >
5.2 大数据
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.5.2.1" data-path = "../usecases/spark-on-kubernetes.html" >
< a href = "../usecases/spark-on-kubernetes.html" >
5.2.1 Spark on Kubernetes
< / a >
< / li >
< / ul >
< / li >
< / ul >
< / li >
< 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 >
< / li >
< 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
< / a >
< / li >
< 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" >
6.4 社区贡献
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "1.7" data-path = "../appendix/" >
< a href = "../appendix/" >
7. 附录
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "1.7.1" data-path = "../appendix/docker-best-practice.html" >
< a href = "../appendix/docker-best-practice.html" >
7.1 Docker最佳实践
< / a >
< / li >
< li class = "chapter " data-level = "1.7.2" data-path = "../appendix/issues.html" >
< a href = "../appendix/issues.html" >
7.2 问题记录
< / a >
< / li >
< li class = "chapter " data-level = "1.7.3" data-path = "../appendix/tricks.html" >
< a href = "../appendix/tricks.html" >
7.3 使用技巧
< / a >
< / li >
< / ul >
< / li >
< li class = "divider" > < / li >
< li >
< a href = "https://www.gitbook.com" target = "blank" class = "gitbook-link" >
本書使用 GitBook 釋出
< / a >
< / li >
< / ul >
< / nav >
< / div >
< div class = "book-body" >
< div class = "body-inner" >
< div class = "book-header" role = "navigation" >
<!-- Title -->
< h1 >
< i class = "fa fa-circle-o-notch fa-spin" > < / i >
< a href = ".." > 3.4.4 使用 service 访问群集中的应用程序< / a >
< / h1 >
< / div >
< div class = "page-wrapper" tabindex = "-1" role = "main" >
< div class = "page-inner" >
< div class = "search-plus" id = "book-search-results" >
< div class = "search-noresults" >
< section class = "normal markdown-section" >
< h1 id = "使用-service-访问群集中的应用程序" > 使 用 service 访 问 群 集 中 的 应 用 程 序 < / h1 >
< p > 本 文 向 您 展 示 如 何 创 建 Kubernetes Service 对 象 ， 外 部 客 户 端 可 以 使 用 它 来 访 问 集 群 中 运 行 的 应 用 程 序 。 该 Service 可 以 为 具 有 两 个 运 行 实 例 的 应 用 程 序 提 供 负 载 均 衡 。 < / p >
< h2 id = "目的" > 目 的 < / h2 >
< ul >
< li > 运 行 Hello World 应 用 程 序 的 两 个 实 例 。 < / li >
< li > 创 建 一 个 暴 露 node 节 点 端 口 的 Service 对 象 。 < / li >
< li > 使 用 Service 对 象 访 问 正 在 运 行 的 应 用 程 序 。 < / li >
< / ul >
< h2 id = "为在两个-pod-中运行的应用程序创建-service" > 为 在 两 个 pod 中 运 行 的 应 用 程 序 创 建 service< / h2 >
< ol >
< li > < p > 在 集 群 中 运 行 Hello World 应 用 程 序 ： < / p >
< pre > < code class = "lang-bash" > kubectl run hello-world --replicas=2 --labels=< span class = "hljs-string" > " run=load-balancer-example" < / span > --image=gcr.io/google-samples/node-hello:1.0 --port=8080
< / code > < / pre >
< p > 上 述 命 令 创 建 一 个 < a href = "https://github.com/rootsongjc/kubernetes.github.io/blob/0d907997e57e046bda9c4f5b5d615619181d571f/docs/concepts/workloads/controllers/deployment" target = "_blank" > Deployment< / a > 对 象 和 一 个 相 关 联 的 < a href = "https://github.com/rootsongjc/kubernetes.github.io/blob/0d907997e57e046bda9c4f5b5d615619181d571f/docs/concepts/workloads/controllers/replicaset" target = "_blank" > ReplicaSet< / a > 对 象 。 该 ReplicaSet 有 两 个 < a href = "https://github.com/rootsongjc/kubernetes.github.io/blob/0d907997e57e046bda9c4f5b5d615619181d571f/docs/concepts/workloads/pods/pod" target = "_blank" > Pod< / a > ， 每 个 Pod 中 都 运 行 一 个 Hello World 应 用 程 序 。 < / p >
< / li >
< li > < p > 显 示 关 于 该 Deployment 的 信 息 ： < / p >
< pre > < code class = "lang-bash" > kubectl get deployments hello-world
kubectl describe deployments hello-world
< / code > < / pre >
< / li >
< li > < p > 显 示 ReplicaSet 的 信 息 ： < / p >
< pre > < code > kubectl get replicasets
kubectl describe replicasets
< / code > < / pre > < / li >
< li > < p > 创 建 一 个 暴 露 该 Deployment 的 Service 对 象 ： < / p >
< pre > < code class = "lang-Bash" > kubectl expose deployment hello-world --type=NodePort --name=example-service
< / code > < / pre >
< / li >
< li > < p > 显 示 该 Service 的 信 息 ： < / p >
< pre > < code class = "lang-bash" > kubectl describe services example-service
< / code > < / pre >
< p > 输 出 类 似 于 ： < / p >
< pre > < code > Name: example-service
Namespace: default
Labels: run=load-balancer-example
Selector: run=load-balancer-example
Type: NodePort
IP: 10.32.0.16
Port: < unset> 8080/TCP
NodePort: < unset> 31496/TCP
Endpoints: 10.200.1.4:8080,10.200.2.5:8080
Session Affinity: None
No events.
< / code > < / pre > < p > 记 下 服 务 的 NodePort 值 。 例 如 ， 在 前 面 的 输 出 中 ， NodePort 值 为 31496。 < / p >
< / li >
< li > < p > 列 出 运 行 Hello World 应 用 程 序 的 Pod： < / p >
< pre > < code class = "lang-bash" > kubectl get pods --selector=< span class = "hljs-string" > " run=load-balancer-example" < / span > --output=wide
< / code > < / pre >
< p > 输 出 类 似 于 ： < / p >
< pre > < code > NAME READY STATUS ... IP NODE
hello-world-2895499144-bsbk5 1/1 Running ... 10.200.1.4 worker1
hello-world-2895499144-m1pwt 1/1 Running ... 10.200.2.5 worker2
< / code > < / pre > < / li >
< li > < p > 获 取 正 在 运 行 Hello World 应 用 程 序 的 Pod 的 其 中 一 个 节 点 的 public IP 地 址 。 如 何 得 到 这 个 地 址 取 决 于 您 的 集 群 设 置 。 例 如 ， 如 果 您 使 用 Minikube， 可 以 通 过 运 行 < code > kubectl cluster-info< / code > 查 看 节 点 地 址 。 如 果 您 是 使 用 Google Compute Engine 实 例 ， 可 以 使 用 < code > gcloud compute instances list< / code > 命 令 查 看 您 的 公 共 地 址 节 点 。 < / p >
< / li >
< li > < p > 在 您 选 择 的 节 点 上 ， 在 您 的 节 点 端 口 上 例 如 创 建 允 许 TCP 流 量 的 防 火 墙 规 则 ， 如 果 您 的 服 务 NodePort 值 为 31568， 创 建 防 火 墙 规 则 ， 允 许 端 口 31568 上 的 TCP流 量 。 < / p >
< / li >
< li > < p > 使 用 节 点 地 址 和 节 点 端 口 访 问 Hello World 应 用 程 序 ： < / p >
< pre > < code class = "lang-bash" > curl http://< public-node-ip> :< node-port>
< / code > < / pre >
< p > 其 中 < code > < public-node-ip> < / code > 是 您 节 点 的 public IP地 址 ， 而 < code > < node-port> < / code > 是 您 服 务 的 NodePort 值 。 < / p >
< p > 对 成 功 请 求 的 响 应 是 一 个 hello 消 息 ： < / p >
< pre > < code > Hello Kubernetes!
< / code > < / pre > < / li >
< / ol >
< h2 id = "使用-service-配置文件" > 使 用 Service 配 置 文 件 < / h2 >
< p > 作 为 使 用 < code > kubectl expose< / code > 的 替 代 方 法 ， 您 可 以 使 用 < a href = "https://github.com/rootsongjc/kubernetes.github.io/blob/0d907997e57e046bda9c4f5b5d615619181d571f/docs/user-guide/services/operations" target = "_blank" > service 配 置 文 件 < / a > 来 创 建 Service。 < / p >
< p > 要 删 除 Service， 输 入 以 下 命 令 ： < / p >
< pre > < code > kubectl delete services example-service
< / code > < / pre > < p > 删 除 Deployment、 ReplicaSet 和 正 运 行 在 Pod 中 的 Hello World 应 用 程 序 ， 输 入 以 下 命 令 ： < / p >
< pre > < code > kubectl delete deployment hello-world
< / code > < / pre > < p > 了 解 更 多 关 于 < a href = "https://github.com/rootsongjc/kubernetes.github.io/blob/0d907997e57e046bda9c4f5b5d615619181d571f/docs/concepts/services-networking/connect-applications-service" target = "_blank" > 使 用 service 连 接 应 用 程 序 < / a > 。 < / p >
< footer class = "page-footer-ex" > < span class = "page-footer-ex-copyright" > for GitBook< / span >                       < span class = "page-footer-ex-footer-update" > update
2017-08-21 18:44:34 +08:00
2017-08-21 18:23:34
2017-08-21 17:44:43 +08:00
< / span > < / footer >
< / section >
< / div >
< div class = "search-results" >
< div class = "has-results" >
< h1 class = "search-results-title" > < span class = 'search-results-count' > < / span > results matching "< span class = 'search-query' > < / span > "< / h1 >
< ul class = "search-results-list" > < / ul >
< / div >
< div class = "no-results" >
< h1 class = "search-results-title" > No results matching "< span class = 'search-query' > < / span > "< / h1 >
< / div >
< / div >
< / div >
< / div >
< / div >
< / div >
< a href = "connecting-to-applications-port-forward.html" class = "navigation navigation-prev " aria-label = "Previous page: 3.4.3 通过端口转发访问集群中的应用程序" >
< i class = "fa fa-angle-left" > < / i >
< / a >
< a href = "application-development-deployment-flow.html" class = "navigation navigation-next " aria-label = "Next page: 3.5 在kubernetes中开发部署应用" >
< i class = "fa fa-angle-right" > < / i >
< / a >
< / div >
< script >
var gitbook = gitbook || [];
gitbook.push(function() {
2017-08-29 10:29:47 +08:00
gitbook.page.hasChanged({"page":{"title":"3.4.4 使用 service 访问群集中的应用程序","level":"1.3.4.4","depth":3,"next":{"title":"3.5 在kubernetes中开发部署应用","level":"1.3.5","depth":2,"path":"guide/application-development-deployment-flow.md","ref":"guide/application-development-deployment-flow.md","articles":[{"title":"3.5.1 适用于kubernetes的应用开发部署流程","level":"1.3.5.1","depth":3,"path":"guide/deploy-applications-in-kubernetes.md","ref":"guide/deploy-applications-in-kubernetes.md","articles":[]},{"title":"3.5.2 迁移传统应用到kubernetes中——以Hadoop YARN为例","level":"1.3.5.2","depth":3,"path":"guide/migrating-hadoop-yarn-to-kubernetes.md","ref":"guide/migrating-hadoop-yarn-to-kubernetes.md","articles":[]}]},"previous":{"title":"3.4.3 通过端口转发访问集群中的应用程序","level":"1.3.4.3","depth":3,"path":"guide/connecting-to-applications-port-forward.md","ref":"guide/connecting-to-applications-port-forward.md","articles":[]},"dir":"ltr"},"config":{"plugins":["github","codesnippet","splitter","page-toc-button","image-captions","page-footer-ex","editlink","-lunr","-search","search-plus"],"styles":{"website":"styles/website.css","pdf":"styles/pdf.css","epub":"styles/epub.css","mobi":"styles/mobi.css","ebook":"styles/ebook.css","print":"styles/print.css"},"pluginsConfig":{"github":{"url":"https://github.com/rootsongjc/kubernetes-handbook"},"editlink":{"label":"编辑本页","multilingual":false,"base":"https://github.com/rootsongjc/kubernetes-handbook/blob/master/"},"page-footer-ex":{"copyright":"for GitBook","update_format":"YYYY-MM-DD HH:mm:ss","update_label":"update"},"splitter":{},"codesnippet":{},"fontsettings":{"theme":"white","family":"sans","size":2},"highlight":{},"page-toc-button":{},"sharing":{"facebook":true,"twitter":true,"google":false,"weibo":false,"instapaper":false,"vk":false,"all":["facebook","google","twitter","weibo","instapaper"]},"theme-default":{"styles":{"website":"styles/website.css","pdf":"styles/pdf.css","epub":"styles/epub.css","mobi":"styles/mobi.css","ebook":"styles/ebook.css","print":"styles/print.css"},"showLevel":false},"search-plus":{},"image-captions":{"variable_name":"_pictures"}},"page-footer-ex":{"copyright":"Jimmy Song","update_label":"最后更新：","update_format":"YYYY-MM-DD HH:mm:ss"},"theme":"default","author":"Jimmy Song","pdf":{"pageNumbers":true,"fontSize":12,"fontFamily":"Arial","paperSize":"a4","chapterMark":"pagebreak","pageBreaksBefore":"/","margin":{"right":62,"left":62,"top":56,"bottom":56}},"structure":{"langs":"LANGS.md","readme":"README.md","glossary":"GLOSSARY.md","summary":"SUMMARY.md"},"variables":{"_pictures":[{"backlink":"index.html#fig1.1.1","level":"1.1","list_caption":"Figure: wercker status","alt":"wercker status","nro":1,"url":"https://app.wercker.com/status/b8b69e593784e17ddcfd1286adfd8f3c/s/master","index":1,"caption_template":"Figure: _CAPTION_","label":"wercker status","attributes":{},"title":"wercker status","skip":false,"key":"1.1.1"},{"backlink":"concepts/index.html#fig1.2.1","level":"1.2","list_caption":"Figure: Borg架构","alt":"Borg架构","nro":2,"url":"../images/borg.png","index":1,"caption_template":"Figure: _CAPTION_","label":"Borg架构","attributes":{},"skip":false,"key":"1.2.1"},{"backlink":"concepts/index.html#fig1.2.2","level":"1.2","list_caption":"Figure: Kubernetes架构","alt":"Kubernetes架构","nro":3,"url":"../images/architecture.png","index":2,"caption_template":"Figure: _CAPTION_","label":"Kubernetes架构","attributes":{},"skip":false,"key":"1.2.2"},{"backlink":"concepts/index.html#fig1.2.3","level":"1.2","list_caption":"Figure: kubernetes整体架构示意图","alt":"kubernetes整体架构示意图","nro":4,"url":"../images/kubernetes-whole-arch.png","index":3,"caption_template":"Figure: _CAPTION_","label":"kubernetes整体架构示意图","attributes":{},"skip":false,"key":"1.2.3"},{"backlink":"concepts/index.html#fig1.2.4","level":"1.2","list_caption":"Figure: Kubernetes master架构示意图","alt":"Kubernetes master架构示意图","nro":5,"url
2017-08-21 17:44:43 +08:00
});
< / script >
< / div >
< script src = "../gitbook/gitbook.js" > < / script >
< script src = "../gitbook/theme.js" > < / script >
< script src = "../gitbook/gitbook-plugin-github/plugin.js" > < / script >
< script src = "../gitbook/gitbook-plugin-splitter/splitter.js" > < / script >
< script src = "../gitbook/gitbook-plugin-page-toc-button/plugin.js" > < / script >
< script src = "../gitbook/gitbook-plugin-editlink/plugin.js" > < / script >
< script src = "../gitbook/gitbook-plugin-search-plus/jquery.mark.min.js" > < / script >
< script src = "../gitbook/gitbook-plugin-search-plus/search.js" > < / script >
< script src = "../gitbook/gitbook-plugin-sharing/buttons.js" > < / script >
< script src = "../gitbook/gitbook-plugin-fontsettings/fontsettings.js" > < / script >
< / body >
< / html >
