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<title>4.3.1 服务滚动升级 · Kubernetes Handbook</title>
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<li class="chapter " data-level="1.1" data-path="../">
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<a href="../">
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1. 前言
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<li class="chapter " data-level="1.2" data-path="../concepts/">
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<a href="../concepts/">
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2. 概念原理
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<a href="../concepts/concepts.html">
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2.1 设计理念
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</a>
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<a href="../concepts/objects.html">
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2.2 主要概念
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<ul class="articles">
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<a href="../concepts/pod-overview.html">
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2.2.1 Pod
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</a>
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<ul class="articles">
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<a href="../concepts/pod.html">
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2.2.1.1 Pod解析
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</a>
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<li class="chapter " data-level="1.2.2.2" data-path="../concepts/node.html">
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<a href="../concepts/node.html">
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2.2.2 Node
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.3" data-path="../concepts/namespace.html">
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<a href="../concepts/namespace.html">
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2.2.3 Namespace
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.4" data-path="../concepts/service.html">
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<a href="../concepts/service.html">
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2.2.4 Service
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.5" data-path="../concepts/volume.html">
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<a href="../concepts/volume.html">
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2.2.5 Volume和Persistent Volume
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</a>
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<li class="chapter " data-level="1.2.2.6" data-path="../concepts/deployment.html">
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<a href="../concepts/deployment.html">
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2.2.6 Deployment
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.7" data-path="../concepts/secret.html">
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<a href="../concepts/secret.html">
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2.2.7 Secret
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.8" data-path="../concepts/statefulset.html">
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<a href="../concepts/statefulset.html">
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2.2.8 StatefulSet
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.9" data-path="../concepts/daemonset.html">
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<a href="../concepts/daemonset.html">
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2.2.9 DaemonSet
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.10" data-path="../concepts/serviceaccount.html">
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<a href="../concepts/serviceaccount.html">
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2.2.10 ServiceAccount
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.11" data-path="../concepts/replicaset.html">
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<a href="../concepts/replicaset.html">
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2.2.11 ReplicationController和ReplicaSet
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||
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.12" data-path="../concepts/job.html">
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<a href="../concepts/job.html">
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2.2.12 Job
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||
</a>
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</li>
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<li class="chapter " data-level="1.2.2.13" data-path="../concepts/cronjob.html">
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<a href="../concepts/cronjob.html">
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2.2.13 CronJob
|
||
|
||
</a>
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|
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</li>
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<li class="chapter " data-level="1.2.2.14" data-path="../concepts/ingress.html">
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<a href="../concepts/ingress.html">
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2.2.14 Ingress
|
||
|
||
</a>
|
||
|
||
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</li>
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<li class="chapter " data-level="1.2.2.15" data-path="../concepts/configmap.html">
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<a href="../concepts/configmap.html">
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2.2.15 ConfigMap
|
||
|
||
</a>
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</li>
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<li class="chapter " data-level="1.2.2.16" data-path="../concepts/horizontal-pod-autoscaling.html">
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<a href="../concepts/horizontal-pod-autoscaling.html">
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||
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2.2.16 Horizontal Pod Autoscaling
|
||
|
||
</a>
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||
|
||
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||
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||
</li>
|
||
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||
<li class="chapter " data-level="1.2.2.17" data-path="../concepts/label.html">
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||
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<a href="../concepts/label.html">
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||
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||
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2.2.17 Label
|
||
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||
</a>
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||
|
||
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||
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||
</li>
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||
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||
</ul>
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</li>
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||
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||
</ul>
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||
</li>
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<li class="chapter " data-level="1.3" data-path="../guide/">
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||
|
||
<a href="../guide/">
|
||
|
||
|
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3. 用户指南
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.3.1" data-path="../guide/resource-configuration.html">
|
||
|
||
<a href="../guide/resource-configuration.html">
|
||
|
||
|
||
3.1 资源配置
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.3.1.1" data-path="../guide/configure-liveness-readiness-probes.html">
|
||
|
||
<a href="../guide/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="../guide/configure-pod-service-account.html">
|
||
|
||
<a href="../guide/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="../guide/command-usage.html">
|
||
|
||
<a href="../guide/command-usage.html">
|
||
|
||
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3.2 命令使用
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
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|
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<li class="chapter " data-level="1.3.2.1" data-path="../guide/using-kubectl.html">
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||
|
||
<a href="../guide/using-kubectl.html">
|
||
|
||
|
||
3.2.1 使用kubectl
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
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|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.3" data-path="../guide/cluster-management.html">
|
||
|
||
<a href="../guide/cluster-management.html">
|
||
|
||
|
||
3.3 集群管理
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.3.3.1" data-path="../guide/managing-tls-in-a-cluster.html">
|
||
|
||
<a href="../guide/managing-tls-in-a-cluster.html">
|
||
|
||
|
||
3.3.1 管理集群中的TLS
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.3.2" data-path="../guide/kubelet-authentication-authorization.html">
|
||
|
||
<a href="../guide/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="../guide/tls-bootstrapping.html">
|
||
|
||
<a href="../guide/tls-bootstrapping.html">
|
||
|
||
|
||
3.3.3 TLS bootstrap
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.4" data-path="../guide/access-kubernetes-cluster.html">
|
||
|
||
<a href="../guide/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="../guide/access-cluster.html">
|
||
|
||
<a href="../guide/access-cluster.html">
|
||
|
||
|
||
3.4.1 访问集群
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.4.2" data-path="../guide/authenticate-across-clusters-kubeconfig.html">
|
||
|
||
<a href="../guide/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="../guide/connecting-to-applications-port-forward.html">
|
||
|
||
<a href="../guide/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 " data-level="1.3.4.4" data-path="../guide/service-access-application-cluster.html">
|
||
|
||
<a href="../guide/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="../guide/application-development-deployment-flow.html">
|
||
|
||
<a href="../guide/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="../guide/deploy-applications-in-kubernetes.html">
|
||
|
||
<a href="../guide/deploy-applications-in-kubernetes.html">
|
||
|
||
|
||
3.5.1 适用于kubernetes的应用开发部署流程
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.5.2" data-path="../guide/migrating-hadoop-yarn-to-kubernetes.html">
|
||
|
||
<a href="../guide/migrating-hadoop-yarn-to-kubernetes.html">
|
||
|
||
|
||
3.5.2 迁移传统应用到kubernetes中——以Hadoop YARN为例
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4" data-path="./">
|
||
|
||
<a href="./">
|
||
|
||
|
||
4. 最佳实践
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.1" data-path="install-kbernetes1.6-on-centos.html">
|
||
|
||
<a href="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="create-tls-and-secret-key.html">
|
||
|
||
<a href="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="create-kubeconfig.html">
|
||
|
||
<a href="create-kubeconfig.html">
|
||
|
||
|
||
4.1.2 创建kubeconfig文件
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.3" data-path="etcd-cluster-installation.html">
|
||
|
||
<a href="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="kubectl-installation.html">
|
||
|
||
<a href="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="master-installation.html">
|
||
|
||
<a href="master-installation.html">
|
||
|
||
|
||
4.1.5 部署master节点
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.6" data-path="node-installation.html">
|
||
|
||
<a href="node-installation.html">
|
||
|
||
|
||
4.1.6 部署node节点
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.7" data-path="kubedns-addon-installation.html">
|
||
|
||
<a href="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="dashboard-addon-installation.html">
|
||
|
||
<a href="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="heapster-addon-installation.html">
|
||
|
||
<a href="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="efk-addon-installation.html">
|
||
|
||
<a href="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="service-discovery-and-loadbalancing.html">
|
||
|
||
<a href="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="traefik-ingress-installation.html">
|
||
|
||
<a href="traefik-ingress-installation.html">
|
||
|
||
|
||
4.2.1 安装Traefik ingress
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.2.2" data-path="distributed-load-test.html">
|
||
|
||
<a href="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="network-and-cluster-perfermance-test.html">
|
||
|
||
<a href="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="edge-node-configuration.html">
|
||
|
||
<a href="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="operation.html">
|
||
|
||
<a href="operation.html">
|
||
|
||
|
||
4.3 运维管理
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter active" data-level="1.4.3.1" data-path="service-rolling-update.html">
|
||
|
||
<a href="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="app-log-collection.html">
|
||
|
||
<a href="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="configuration-best-practice.html">
|
||
|
||
<a href="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="monitor.html">
|
||
|
||
<a href="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="jenkins-ci-cd.html">
|
||
|
||
<a href="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="data-persistence-problem.html">
|
||
|
||
<a href="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="storage.html">
|
||
|
||
<a href="storage.html">
|
||
|
||
|
||
4.4 存储管理
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.4.1" data-path="glusterfs.html">
|
||
|
||
<a href="glusterfs.html">
|
||
|
||
|
||
4.4.1 GlusterFS
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.4.1.1" data-path="using-glusterfs-for-persistent-storage.html">
|
||
|
||
<a href="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="storage-for-containers-using-glusterfs-with-openshift.html">
|
||
|
||
<a href="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-standalone-on-kubernetes.html">
|
||
|
||
<a href="../usecases/spark-standalone-on-kubernetes.html">
|
||
|
||
|
||
5.2.1 Spark standalone on Kubernetes
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5.3" data-path="../usecases/serverless.html">
|
||
|
||
<a href="../usecases/serverless.html">
|
||
|
||
|
||
5.3 Serverless架构
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</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>
|
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</ul>
|
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|
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|
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|
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<div class="book-body">
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<!-- Title -->
|
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<h1>
|
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<i class="fa fa-circle-o-notch fa-spin"></i>
|
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<a href=".." >4.3.1 服务滚动升级</a>
|
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</h1>
|
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</div>
|
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|
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<h1 id="服务滚动升级">服务滚动升级</h1>
|
||
<p>当有镜像发布新版本，新版本服务上线时如何实现服务的滚动和平滑升级？</p>
|
||
<p>如果你使用<strong>ReplicationController</strong>创建的pod可以使用<code>kubectl rollingupdate</code>命令滚动升级，如果使用的是<strong>Deployment</strong>创建的Pod可以直接修改yaml文件后执行<code>kubectl apply</code>即可。</p>
|
||
<p>Deployment已经内置了RollingUpdate strategy，因此不用再调用<code>kubectl rollingupdate</code>命令，升级的过程是先创建新版的pod将流量导入到新pod上后销毁原来的旧的pod。</p>
|
||
<p>Rolling Update适用于<code>Deployment</code>、<code>Replication Controller</code>，官方推荐使用Deployment而不再使用Replication Controller。</p>
|
||
<p>使用ReplicationController时的滚动升级请参考官网说明：<a href="https://kubernetes.io/docs/tasks/run-application/rolling-update-replication-controller/" target="_blank">https://kubernetes.io/docs/tasks/run-application/rolling-update-replication-controller/</a></p>
|
||
<h2 id="replicationcontroller与deployment的关系">ReplicationController与Deployment的关系</h2>
|
||
<p>ReplicationController和Deployment的RollingUpdate命令有些不同，但是实现的机制是一样的，关于这两个kind的关系我引用了<a href="https://segmentfault.com/a/1190000008232770" target="_blank">ReplicationController与Deployment的区别</a>中的部分内容如下，详细区别请查看原文。</p>
|
||
<h3 id="replicationcontroller">ReplicationController</h3>
|
||
<p>Replication Controller为Kubernetes的一个核心内容，应用托管到Kubernetes之后，需要保证应用能够持续的运行，Replication Controller就是这个保证的key，主要的功能如下：</p>
|
||
<ul>
|
||
<li>确保pod数量：它会确保Kubernetes中有指定数量的Pod在运行。如果少于指定数量的pod，Replication Controller会创建新的，反之则会删除掉多余的以保证Pod数量不变。</li>
|
||
<li>确保pod健康：当pod不健康，运行出错或者无法提供服务时，Replication Controller也会杀死不健康的pod，重新创建新的。</li>
|
||
<li>弹性伸缩 ：在业务高峰或者低峰期的时候，可以通过Replication Controller动态的调整pod的数量来提高资源的利用率。同时，配置相应的监控功能（Hroizontal Pod Autoscaler），会定时自动从监控平台获取Replication Controller关联pod的整体资源使用情况，做到自动伸缩。</li>
|
||
<li>滚动升级：滚动升级为一种平滑的升级方式，通过逐步替换的策略，保证整体系统的稳定，在初始化升级的时候就可以及时发现和解决问题，避免问题不断扩大。</li>
|
||
</ul>
|
||
<h3 id="deployment">Deployment</h3>
|
||
<p>Deployment同样为Kubernetes的一个核心内容，主要职责同样是为了保证pod的数量和健康，90%的功能与Replication Controller完全一样，可以看做新一代的Replication Controller。但是，它又具备了Replication Controller之外的新特性：</p>
|
||
<ul>
|
||
<li>Replication Controller全部功能：Deployment继承了上面描述的Replication Controller全部功能。</li>
|
||
<li>事件和状态查看：可以查看Deployment的升级详细进度和状态。</li>
|
||
<li>回滚：当升级pod镜像或者相关参数的时候发现问题，可以使用回滚操作回滚到上一个稳定的版本或者指定的版本。</li>
|
||
<li>版本记录: 每一次对Deployment的操作，都能保存下来，给予后续可能的回滚使用。</li>
|
||
<li>暂停和启动：对于每一次升级，都能够随时暂停和启动。</li>
|
||
<li>多种升级方案：Recreate：删除所有已存在的pod,重新创建新的; RollingUpdate：滚动升级，逐步替换的策略，同时滚动升级时，支持更多的附加参数，例如设置最大不可用pod数量，最小升级间隔时间等等。</li>
|
||
</ul>
|
||
<h2 id="创建测试镜像">创建测试镜像</h2>
|
||
<p>我们来创建一个特别简单的web服务，当你访问网页时，将输出一句版本信息。通过区分这句版本信息输出我们就可以断定升级是否完成。</p>
|
||
<p>所有配置和代码见<a href="manifests/test/rolling-update-test">manifests/test/rolling-update-test</a>目录。</p>
|
||
<p><strong>Web服务的代码main.go</strong></p>
|
||
<pre><code class="lang-Go"><span class="hljs-keyword">package</span> main
|
||
|
||
<span class="hljs-keyword">import</span> (
|
||
<span class="hljs-string">"fmt"</span>
|
||
<span class="hljs-string">"log"</span>
|
||
<span class="hljs-string">"net/http"</span>
|
||
)
|
||
|
||
<span class="hljs-keyword">func</span> sayhello(w http.ResponseWriter, r *http.Request) {
|
||
fmt.Fprintf(w, <span class="hljs-string">"This is version 1."</span>) <span class="hljs-comment">//这个写入到w的是输出到客户端的</span>
|
||
}
|
||
|
||
<span class="hljs-keyword">func</span> main() {
|
||
http.HandleFunc(<span class="hljs-string">"/"</span>, sayhello) <span class="hljs-comment">//设置访问的路由</span>
|
||
log.Println(<span class="hljs-string">"This is version 1."</span>)
|
||
err := http.ListenAndServe(<span class="hljs-string">":9090"</span>, <span class="hljs-literal">nil</span>) <span class="hljs-comment">//设置监听的端口</span>
|
||
<span class="hljs-keyword">if</span> err != <span class="hljs-literal">nil</span> {
|
||
log.Fatal(<span class="hljs-string">"ListenAndServe: "</span>, err)
|
||
}
|
||
}
|
||
</code></pre>
|
||
<p><strong>创建Dockerfile</strong></p>
|
||
<pre><code class="lang-Dockerfile"><span class="hljs-keyword">FROM</span> alpine:<span class="hljs-number">3.5</span>
|
||
<span class="hljs-keyword">MAINTAINER</span> Jimmy Song<rootsongjc@gmail.com>
|
||
<span class="hljs-keyword">ADD</span> <span class="bash">hellov2 /
|
||
</span><span class="hljs-keyword">ENTRYPOINT</span> <span class="bash">[<span class="hljs-string">"/hellov2"</span>]
|
||
</span></code></pre>
|
||
<p>注意修改添加的文件的名称。</p>
|
||
<p><strong>创建Makefile</strong></p>
|
||
<p>修改镜像仓库的地址为你自己的私有镜像仓库地址。</p>
|
||
<p>修改<code>Makefile</code>中的<code>TAG</code>为新的版本号。</p>
|
||
<pre><code class="lang-cmake">all: build push clean
|
||
.PHONY: build push clean
|
||
|
||
TAG = v1
|
||
|
||
<span class="hljs-comment"># Build for linux amd64</span>
|
||
build:
|
||
GOOS=linux GOARCH=amd64 go build -o hello<span class="hljs-variable">${TAG}</span> main.go
|
||
docker build -t sz-pg-oam-docker-hub-<span class="hljs-number">001</span>.tendcloud.com/library/hello:<span class="hljs-variable">${TAG}</span> .
|
||
|
||
<span class="hljs-comment"># Push to tenxcloud</span>
|
||
push:
|
||
docker push sz-pg-oam-docker-hub-<span class="hljs-number">001</span>.tendcloud.com/library/hello:<span class="hljs-variable">${TAG}</span>
|
||
|
||
<span class="hljs-comment"># Clean </span>
|
||
clean:
|
||
rm -f hello<span class="hljs-variable">${TAG}</span>
|
||
</code></pre>
|
||
<p><strong>编译</strong></p>
|
||
<pre><code class="lang-Shell">make all
|
||
</code></pre>
|
||
<p>分别修改main.go中的输出语句、Dockerfile中的文件名称和Makefile中的TAG，创建两个版本的镜像。</p>
|
||
<h2 id="测试">测试</h2>
|
||
<p>我们使用Deployment部署服务来测试。</p>
|
||
<p>配置文件<code>rolling-update-test.yaml</code>：</p>
|
||
<pre><code class="lang-Yaml"><span class="hljs-attr">apiVersion:</span> extensions/v1beta1
|
||
<span class="hljs-attr">kind:</span> Deployment
|
||
<span class="hljs-attr">metadata:</span>
|
||
<span class="hljs-attr"> name:</span> rolling-update-test
|
||
<span class="hljs-attr">spec:</span>
|
||
<span class="hljs-attr"> replicas:</span> <span class="hljs-number">3</span>
|
||
<span class="hljs-attr"> template:</span>
|
||
<span class="hljs-attr"> metadata:</span>
|
||
<span class="hljs-attr"> labels:</span>
|
||
<span class="hljs-attr"> app:</span> rolling-update-test
|
||
<span class="hljs-attr"> spec:</span>
|
||
<span class="hljs-attr"> containers:</span>
|
||
<span class="hljs-attr"> - name:</span> rolling-update-test
|
||
<span class="hljs-attr"> image:</span> sz-pg-oam-docker-hub<span class="hljs-bullet">-001.</span>tendcloud.com/library/hello:v1
|
||
<span class="hljs-attr"> ports:</span>
|
||
<span class="hljs-attr"> - containerPort:</span> <span class="hljs-number">9090</span>
|
||
<span class="hljs-meta">---</span>
|
||
<span class="hljs-attr">apiVersion:</span> v1
|
||
<span class="hljs-attr">kind:</span> Service
|
||
<span class="hljs-attr">metadata:</span>
|
||
<span class="hljs-attr"> name:</span> rolling-update-test
|
||
<span class="hljs-attr"> labels:</span>
|
||
<span class="hljs-attr"> app:</span> rolling-update-test
|
||
<span class="hljs-attr">spec:</span>
|
||
<span class="hljs-attr"> ports:</span>
|
||
<span class="hljs-attr"> - port:</span> <span class="hljs-number">9090</span>
|
||
<span class="hljs-attr"> protocol:</span> TCP
|
||
<span class="hljs-attr"> name:</span> http
|
||
<span class="hljs-attr"> selector:</span>
|
||
<span class="hljs-attr"> app:</span> rolling-update-test
|
||
</code></pre>
|
||
<p><strong>部署service</strong></p>
|
||
<pre><code class="lang-shell">kubectl create -f rolling-update-test.yaml
|
||
</code></pre>
|
||
<p><strong>修改traefik ingress配置</strong></p>
|
||
<p>在<code>ingress.yaml</code>文件中增加新service的配置。</p>
|
||
<pre><code class="lang-Yaml"><span class="hljs-attr"> - host:</span> rolling-update-test.traefik.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> rolling-update-test
|
||
<span class="hljs-attr"> servicePort:</span> <span class="hljs-number">9090</span>
|
||
</code></pre>
|
||
<p>修改本地的host配置，增加一条配置：</p>
|
||
<pre><code>172.20.0.119 rolling-update-test.traefik.io
|
||
</code></pre><p>注意：172.20.0.119是我们之前使用keepalived创建的VIP。</p>
|
||
<p>打开浏览器访问<a href="http://rolling-update-test.traefik.io将会看到以下输出：" target="_blank">http://rolling-update-test.traefik.io将会看到以下输出：</a></p>
|
||
<pre><code>This is version 1.
|
||
</code></pre><p><strong>滚动升级</strong></p>
|
||
<p>只需要将<code>rolling-update-test.yaml</code>文件中的<code>image</code>改成新版本的镜像名，然后执行：</p>
|
||
<pre><code class="lang-shell">kubectl apply -f rolling-update-test.yaml
|
||
</code></pre>
|
||
<p>也可以参考<a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank">Kubernetes Deployment Concept</a>中的方法，直接设置新的镜像。</p>
|
||
<pre><code>kubectl set image deployment/rolling-update-test rolling-update-test=sz-pg-oam-docker-hub-001.tendcloud.com/library/hello:v2
|
||
</code></pre><p>或者使用<code>kubectl edit deployment/rolling-update-test</code>修改镜像名称后保存。</p>
|
||
<p>使用以下命令查看升级进度：</p>
|
||
<pre><code>kubectl rollout status deployment/rolling-update-test
|
||
</code></pre><p>升级完成后在浏览器中刷新<a href="http://rolling-update-test.traefik.io将会看到以下输出：" target="_blank">http://rolling-update-test.traefik.io将会看到以下输出：</a></p>
|
||
<pre><code>This is version 2.
|
||
</code></pre><p>说明滚动升级成功。</p>
|
||
<h2 id="使用replicationcontroller创建的pod如何rollingupdate">使用ReplicationController创建的Pod如何RollingUpdate</h2>
|
||
<p>以上讲解使用<strong>Deployment</strong>创建的Pod的RollingUpdate方式，那么如果使用传统的<strong>ReplicationController</strong>创建的Pod如何Update呢？</p>
|
||
<p>举个例子：</p>
|
||
<pre><code class="lang-bash">$ kubectl -n spark-cluster rolling-update zeppelin-controller --image sz-pg-oam-docker-hub-001.tendcloud.com/library/zeppelin:0.7.1
|
||
Created zeppelin-controller-99be89dbbe5<span class="hljs-built_in">cd</span>5b8d6feab8f57a04a8b
|
||
Scaling up zeppelin-controller-99be89dbbe5<span class="hljs-built_in">cd</span>5b8d6feab8f57a04a8b from 0 to 1, scaling down zeppelin-controller from 1 to 0 (keep 1 pods available, don<span class="hljs-string">'t exceed 2 pods)
|
||
Scaling zeppelin-controller-99be89dbbe5cd5b8d6feab8f57a04a8b up to 1
|
||
Scaling zeppelin-controller down to 0
|
||
Update succeeded. Deleting old controller: zeppelin-controller
|
||
Renaming zeppelin-controller-99be89dbbe5cd5b8d6feab8f57a04a8b to zeppelin-controller
|
||
replicationcontroller "zeppelin-controller" rolling updated
|
||
</span></code></pre>
|
||
<p>只需要指定新的镜像即可，当然你可以配置RollingUpdate的策略。</p>
|
||
<h2 id="参考">参考</h2>
|
||
<p><a href="http://dockone.io/article/328" target="_blank">Rolling update机制解析</a></p>
|
||
<p><a href="https://kubernetes.io/docs/tasks/run-application/run-stateless-application-deployment/" target="_blank">Running a Stateless Application Using a Deployment</a></p>
|
||
<p><a href="https://github.com/kubernetes/community/blob/master/contributors/design-proposals/simple-rolling-update.md" target="_blank">Simple Rolling Update</a></p>
|
||
<p><a href="https://segmentfault.com/a/1190000008232770" target="_blank">使用kubernetes的deployment进行RollingUpdate</a> </p>
|
||
<footer class="page-footer-ex"> <span class="page-footer-ex-copyright">for GitBook</span>           <span class="page-footer-ex-footer-update">update
|
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2017-08-21 18:23:35
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