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itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="主页面" class="breadcrumbs__link" href="/zh/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_YNFT"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">开始使用</span><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">概述</span><meta itemprop="position" content="2"></li></ul></nav><span class="theme-doc-version-badge badge badge--secondary">版本:v2.8</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">本页总览</button></div><div class="theme-doc-markdown markdown"><header><h1>概述</h1></header><p>Rancher 是一个为使用容器的公司打造的容器管理平台。Rancher 使得开发者可以随处运行 Kubernetes(Run Kubernetes Everywhere),满足 IT 需求规范,赋能 DevOps 团队。</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="run-kubernetes-everywhere">Run Kubernetes Everywhere<a href="#run-kubernetes-everywhere" class="hash-link" aria-label="标题的直接链接" title="标题的直接链接"></a></h2><p>Kubernetes 已经成为容器编排标准。现在,大多数云和虚拟化提供商都提供容器编排服务。Rancher 用户可以选择使用 Rancher Kubernetes Engine(RKE)或云 Kubernetes 服务(例如 GKE、AKS 和 EKS)创建 Kubernetes 集群,还可以导入和管理使用任何 Kubernetes 发行版或安装程序创建的现有 Kubernetes 集群。</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="满足-it-需求规范">满足 IT 需求规范<a href="#满足-it-需求规范" class="hash-link" aria-label="标题的直接链接" title="标题的直接链接"></a></h2><p>Rancher 支持对其控制的所有 Kubernetes 集群进行集中认证、访问控制和监控。例如,你可以:</p><ul><li>使用你的 Active Directory 凭证访问由云提供商(例如 GKE)托管的 Kubernetes 集群。</li><li>设置所有用户、组、项目、集群和云服务的权限控制策略和安全策略。</li><li>一站式查看 Kubernetes 集群的运行状况和容量。</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="赋能-devops-团队">赋能 DevOps 团队<a href="#赋能-devops-团队" class="hash-link" aria-label="标题的直接链接" title="标题的直接链接"></a></h2><p>Rancher 为 DevOps 工程师提供简单直接的用户界面,以管理其应用负载。用户不需要对 Kubernetes 有非常深入的了解,即可使用 Rancher。Rancher 应用商店包含一套实用的 DevOps 开发工具。Rancher 获得了多种云原生生态系统产品的认证,包括安全工具、监控系统、容器镜像仓库、存储和网络驱动等。</p><p>下图讲述了 Rancher 在 IT 管理团队和 DevOps 开发团队之间扮演的角色。DevOps 团队把他们的应用部署在他们选择的公有云或私有云上。IT 管理员负责查看并管理用户、集群、云服务的权限。</p><p><img loading="lazy" alt="平台" src="/zh/assets/images/platform-9c0c4130a7a0828898dbc7af56f76df7.png" width="791" height="245" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="rancher-api-server-的功能">Rancher API Server 的功能<a href="#rancher-api-server-的功能" class="hash-link" aria-label="标题的直接链接" title="标题的直接链接"></a></h2><p>Rancher API Server 是基于嵌入式 Kubernetes API Server 和 etcd 数据库建立的,它提供了以下功能:</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="授权和基于角色的权限控制rbac">授权和基于角色的权限控制(RBAC)<a href="#授权和基于角色的权限控制rbac" class="hash-link" aria-label="标题的直接链接" title="标题的直接链接"></a></h3><ul><li><strong>用户管理</strong>:Rancher API Server 除了管理本地用户,还<a href="/zh/v2.8/how-to-guides/new-user-guides/authentication-permissions-and-global-configuration/authentication-config">管理用户用来访问外部服务所需的认证信息</a>,如登录 Active Directory 和 GitHub 所需的账号密码。</li><li><strong>授权</strong>:Rancher API Server 可以管理<a href="/zh/v2.8/how-to-guides/new-user-guides/authentication-permissions-and-global-configuration/manage-role-based-access-control-rbac">访问控制策略</a>和<a href="/zh/v2.8/how-to-guides/new-user-guides/authentication-permissions-and-global-configuration/create-pod-security-policies">安全策略</a>。</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="使用-kubernetes-的功能">使用 Kubernetes 的功能<a href="#使用-kubernetes-的功能" class="hash-link" aria-label="标题的直接链接" title="标题的直接链接"></a></h3><ul><li><strong>配置 Kubernetes 集群</strong>:Rancher API Server 可以在已有节点上<a href="/zh/v2.8/how-to-guides/new-user-guides/kubernetes-clusters-in-rancher-setup">配置 Kubernetes</a>,或进行 <a href="/zh/v2.8/getting-started/installation-and-upgrade/upgrade-and-roll-back-kubernetes">Kubernetes 版本升级</a>。</li><li><strong>管理应用商店</strong>:Rancher 支持使用 <a href="/zh/v2.8/how-to-guides/new-user-guides/helm-charts-in-rancher">Helm Chart 应用商店</a>实现轻松重复部署应用。</li><li><strong>管理项目</strong>:项目由集群中多个命名空间和访问控制策略组成,是 Rancher 中的一个概念,Kubernetes 中并没有这个概念。你可以使用项目实现以组为单位,管理多个命名空间,并进行 Kubernetes 相关操作。Rancher UI 提供用于<a href="/zh/v2.8/how-to-guides/advanced-user-guides/manage-projects">项目管理</a>和<a href="/zh/v2.8/how-to-guides/new-user-guides/kubernetes-resources-setup">项目内应用管理</a>的功能。</li><li><strong>Fleet 持续交付</strong>:在 Rancher 中,你可以使用 <a href="/zh/v2.8/integrations-in-rancher/fleet">Fleet 持续交付</a>将应用程序从 Git 仓库部署到目标下游 Kubernetes 集群,无需任何手动操作。</li><li><strong>Istio</strong>:<a href="/zh/v2.8/integrations-in-rancher/istio">Rancher 与 Istio 集成</a>,使得管理员或集群所有者可以将 Istio 交给开发者,然后开发者使用 Istio 执行安全策略,排查问题,或为蓝绿部署,金丝雀部署,和 A/B 测试进行流量管理。</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="配置云基础设施">配置云基础设施<a href="#配置云基础设施" class="hash-link" aria-label="标题的直接链接" title="标题的直接链接"></a></h3><ul><li><strong>同步节点信息</strong>:Rancher API Server 可以同步所有集群中全部<a href="/zh/v2.8/how-to-guides/new-user-guides/manage-clusters/nodes-and-node-pools">节点</a>的信息。</li><li><strong>配置云基础设施</strong>:如果你为 Rancher 配置了云提供商,Rancher 可以在云端动态配置<a href="/zh/v2.8/how-to-guides/new-user-guides/launch-kubernetes-with-rancher/use-new-nodes-in-an-infra-provider">新节点</a>和<a href="/zh/v2.8/how-to-guides/new-user-guides/manage-clusters/create-kubernetes-persistent-storage">持久化存储</a>。</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="查看集群信息">查看集群信息<a href="#查看集群信息" class="hash-link" aria-label="标题的直接链接" title="标题的直接链接"></a></h3><ul><li><strong>日志管理</strong>:Rancher 可以与多种 Kubernetes 集群之外的主流日志管理工具集成。</li><li><strong>监控</strong>:你可以使用 Rancher,通过业界领先并开源的 Prometheus 来监控集群节点、Kubernetes 组件和软件部署的状态和进程。</li><li><strong>告警</strong>:为了保证集群和应用的正常运行,提高公司的生产效率,你需要随时了解集群和项目的计划内和非计划事件。</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="使用-rancher-编辑下游集群">使用 Rancher 编辑下游集群<a href="#使用-rancher-编辑下游集群" class="hash-link" aria-label="标题的直接链接" title="标题的直接链接"></a></h2><p>对于已有集群而言,可提供的选项和设置取决于你配置集群的方法。例如,只有<a href="/zh/v2.8/how-to-guides/new-user-guides/launch-kubernetes-with-rancher">通过 RKE 启动</a>的集群才有可编辑的<strong>集群选项</strong>。</p><p>使用 Rancher 创建集群后,集群管理员可以管理集群成员,管理节点池,或进行<a href="/zh/v2.8/reference-guides/cluster-configuration">其他操作</a>。</p><p>下表总结了每一种类型的集群和对应的可编辑的选项和设置:</p><table><thead><tr><th>操作</th><th>Rancher 启动的 Kubernetes 集群</th><th>EKS、GKE 和 AKS 集群<sup>1</sup></th><th>其他托管的 Kubernetes 集群</th><th>非 EKS 或 GKE 注册集群</th></tr></thead><tbody><tr><td><a href="/zh/v2.8/how-to-guides/new-user-guides/manage-clusters/access-clusters/use-kubectl-and-kubeconfig">使用 kubectl 和 kubeconfig 文件来访问集群</a></td><td>✓</td><td>✓</td><td>✓</td><td>✓</td></tr><tr><td><a href="/zh/v2.8/how-to-guides/new-user-guides/manage-clusters/access-clusters/add-users-to-clusters">管理集群成员</a></td><td>✓</td><td>✓</td><td>✓</td><td>✓</td></tr><tr><td><a href="/zh/v2.8/reference-guides/cluster-configuration">编辑和升级集群</a></td><td>✓</td><td>✓</td><td>✓</td><td>✓<sup>2</sup></td></tr><tr><td><a href="/zh/v2.8/how-to-guides/new-user-guides/manage-clusters/nodes-and-node-pools">管理节点</a></td><td>✓</td><td>✓</td><td>✓</td><td>✓<sup>3</sup></td></tr><tr><td><a href="/zh/v2.8/how-to-guides/new-user-guides/manage-clusters/create-kubernetes-persistent-storage">管理持久卷和存储类</a></td><td>✓</td><td>✓</td><td>✓</td><td>✓</td></tr><tr><td><a href="/zh/v2.8/how-to-guides/new-user-guides/manage-clusters/projects-and-namespaces">管理项目、命名空间和工作负载</a></td><td>✓</td><td>✓</td><td>✓</td><td>✓</td></tr><tr><td><a href="/zh/v2.8/how-to-guides/new-user-guides/helm-charts-in-rancher">使用应用目录</a></td><td>✓</td><td>✓</td><td>✓</td><td>✓</td></tr><tr><td>配置工具(<a href="/zh/v2.8/integrations-in-rancher/monitoring-and-alerting">Alerts、Notifiers、Monitoring</a>、<a href="/zh/v2.8/integrations-in-rancher/logging">Logging</a> 和 <a href="/zh/v2.8/integrations-in-rancher/istio">Istio</a>)</td><td>✓</td><td>✓</td><td>✓</td><td>✓</td></tr><tr><td><a href="/zh/v2.8/how-to-guides/advanced-user-guides/cis-scan-guides">运行安全扫描</a></td><td>✓</td><td>✓</td><td>✓</td><td>✓</td></tr><tr><td><a href="/zh/v2.8/how-to-guides/new-user-guides/manage-clusters/rotate-certificates">轮换证书</a></td><td>✓</td><td>✓</td><td></td><td></td></tr><tr><td><a href="/zh/v2.8/how-to-guides/new-user-guides/backup-restore-and-disaster-recovery/back-up-rancher-launched-kubernetes-clusters">备份</a>和<a href="/zh/v2.8/how-to-guides/new-user-guides/backup-restore-and-disaster-recovery/restore-rancher-launched-kubernetes-clusters-from-backup">恢复</a> Rancher 启动的集群</td><td>✓</td><td>✓</td><td></td><td>✓<sup>4</sup></td></tr><tr><td><a href="/zh/v2.8/how-to-guides/new-user-guides/manage-clusters/clean-cluster-nodes">在 Rancher 无法访问集群时清理 Kubernetes 组件</a></td><td>✓</td><td></td><td></td><td></td></tr><tr><td><a href="/zh/v2.8/how-to-guides/new-user-guides/manage-clusters/add-a-pod-security-policy">配置 Pod 安全策略</a></td><td>✓</td><td>✓</td><td></td><td></td></tr></tbody></table><ol><li><p>注册的 EKS、GKE 和 AKS 集群与从 Rancher UI 创建的 EKS、GKE 和 AKS 集群的可用选项一致。不同之处是,从 Rancher UI 中删除已注册的集群后,集群不会被销毁。</p></li><li><p>无法编辑已注册的集群的集群配置选项(<a href="/zh/v2.8/how-to-guides/new-user-guides/kubernetes-clusters-in-rancher-setup/register-existing-clusters">K3s 和 RKE2 集群</a>除外)。</p></li><li><p>Rancher UI 为已注册的集群节点提供了封锁、清空和编辑节点的功能。</p></li><li><p>对于使用 etcd 作为 controlplane 的注册集群,必须在 Rancher UI 之外手动创建快照以用于备份和恢复。</p></li></ol></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a 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