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<title>2.2.5 Volume和Persistent Volume · Kubernetes Handbook</title>
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序言
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1. Kubernetes与云原生应用概览
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2.1 设计理念
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2.2 Objects
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<ul class="articles">
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<a href="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="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="1.3.2.1.2" data-path="init-containers.html">
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<a href="init-containers.html">
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2.2.1.2 Init容器
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</a>
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<li class="chapter " data-level="1.3.2.1.3" data-path="pod-security-policy.html">
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<a href="pod-security-policy.html">
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2.2.1.3 Pod安全策略
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</a>
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<li class="chapter " data-level="1.3.2.1.4" data-path="pod-lifecycle.html">
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<a href="pod-lifecycle.html">
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2.2.1.4 Pod的生命周期
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</a>
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</li>
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</ul>
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<li class="chapter " data-level="1.3.2.2" data-path="node.html">
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<a href="node.html">
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2.2.2 Node
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</a>
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<li class="chapter " data-level="1.3.2.3" data-path="namespace.html">
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<a href="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="1.3.2.4" data-path="service.html">
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<a href="service.html">
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2.2.4 Service
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</a>
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<li class="chapter active" data-level="1.3.2.5" data-path="volume.html">
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<a href="volume.html">
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2.2.5 Volume和Persistent Volume
|
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</a>
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</li>
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<li class="chapter " data-level="1.3.2.6" data-path="deployment.html">
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<a href="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="1.3.2.7" data-path="secret.html">
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<a href="secret.html">
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2.2.7 Secret
|
||
|
||
</a>
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||
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</li>
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<li class="chapter " data-level="1.3.2.8" data-path="statefulset.html">
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<a href="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="1.3.2.9" data-path="daemonset.html">
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<a href="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="1.3.2.10" data-path="serviceaccount.html">
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<a href="serviceaccount.html">
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2.2.10 ServiceAccount
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||
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</a>
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</li>
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<li class="chapter " data-level="1.3.2.11" data-path="replicaset.html">
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<a href="replicaset.html">
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2.2.11 ReplicationController和ReplicaSet
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</a>
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</li>
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<li class="chapter " data-level="1.3.2.12" data-path="job.html">
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<a href="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="1.3.2.13" data-path="cronjob.html">
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<a href="cronjob.html">
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2.2.13 CronJob
|
||
|
||
</a>
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</li>
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<li class="chapter " data-level="1.3.2.14" data-path="ingress.html">
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<a href="ingress.html">
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2.2.14 Ingress
|
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</a>
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</li>
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|
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<li class="chapter " data-level="1.3.2.15" data-path="configmap.html">
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<a href="configmap.html">
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||
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2.2.15 ConfigMap
|
||
|
||
</a>
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||
|
||
|
||
|
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</li>
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||
|
||
<li class="chapter " data-level="1.3.2.16" data-path="horizontal-pod-autoscaling.html">
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||
|
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<a href="horizontal-pod-autoscaling.html">
|
||
|
||
|
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2.2.16 Horizontal Pod Autoscaling
|
||
|
||
</a>
|
||
|
||
|
||
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||
</li>
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|
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<li class="chapter " data-level="1.3.2.17" data-path="label.html">
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<a href="label.html">
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2.2.17 Label
|
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|
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</a>
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||
|
||
|
||
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</li>
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|
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<li class="chapter " data-level="1.3.2.18" data-path="garbage-collection.html">
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<a href="garbage-collection.html">
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||
|
||
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2.2.18 垃圾收集
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
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||
|
||
<li class="chapter " data-level="1.3.2.19" data-path="network-policy.html">
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||
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<a href="network-policy.html">
|
||
|
||
|
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2.2.19 NetworkPolicy
|
||
|
||
</a>
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||
|
||
|
||
|
||
</li>
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||
|
||
|
||
</ul>
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</li>
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||
</ul>
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</li>
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<li class="chapter " data-level="1.4" data-path="../guide/">
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<a href="../guide/">
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3. 用户指南
|
||
|
||
</a>
|
||
|
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<ul class="articles">
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||
|
||
|
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<li class="chapter " data-level="1.4.1" data-path="../guide/resource-configuration.html">
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<a href="../guide/resource-configuration.html">
|
||
|
||
|
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3.1 资源对象配置
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.1.1" data-path="../guide/configure-liveness-readiness-probes.html">
|
||
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||
<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="1.4.1.2" 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>
|
||
|
||
<li class="chapter " data-level="1.4.1.3" data-path="../guide/secret-configuration.html">
|
||
|
||
<a href="../guide/secret-configuration.html">
|
||
|
||
|
||
3.1.3 Secret配置
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.4" data-path="../guide/resource-quota-management.html">
|
||
|
||
<a href="../guide/resource-quota-management.html">
|
||
|
||
|
||
3.2.3 管理namespace中的资源配额
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.2" data-path="../guide/command-usage.html">
|
||
|
||
<a href="../guide/command-usage.html">
|
||
|
||
|
||
3.2 命令使用
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.2.1" data-path="../guide/using-kubectl.html">
|
||
|
||
<a href="../guide/using-kubectl.html">
|
||
|
||
|
||
3.2.1 使用kubectl
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.2.2" data-path="../guide/docker-cli-to-kubectl.html">
|
||
|
||
<a href="../guide/docker-cli-to-kubectl.html">
|
||
|
||
|
||
3.2.2 docker用户过度到kubectl命令行指南
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.3" data-path="../guide/cluster-security-management.html">
|
||
|
||
<a href="../guide/cluster-security-management.html">
|
||
|
||
|
||
3.3 集群安全性管理
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.3.1" 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="1.4.3.2" 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="1.4.3.3" data-path="../guide/tls-bootstrapping.html">
|
||
|
||
<a href="../guide/tls-bootstrapping.html">
|
||
|
||
|
||
3.3.3 TLS bootstrap
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.3.4" data-path="../guide/kubectl-user-authentication-authorization.html">
|
||
|
||
<a href="../guide/kubectl-user-authentication-authorization.html">
|
||
|
||
|
||
3.3.4 kubectl的用户认证授权
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.3.5" data-path="../guide/rbac.html">
|
||
|
||
<a href="../guide/rbac.html">
|
||
|
||
|
||
3.3.5 RBAC——基于角色的访问控制
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.3.6" data-path="../guide/ip-masq-agent.html">
|
||
|
||
<a href="../guide/ip-masq-agent.html">
|
||
|
||
|
||
3.3.6 IP伪装代理
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.4" 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="1.4.4.1" 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="1.4.4.2" 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="1.4.4.3" 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="1.4.4.4" 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="1.4.5" 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="1.4.5.1" 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="1.4.5.2" 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>
|
||
|
||
<li class="chapter " data-level="1.4.5.3" data-path="../guide/using-statefulset.html">
|
||
|
||
<a href="../guide/using-statefulset.html">
|
||
|
||
|
||
3.5.3 使用StatefulSet部署用状态应用
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5" data-path="../practice/">
|
||
|
||
<a href="../practice/">
|
||
|
||
|
||
4. 最佳实践
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.1" 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="1.5.1.1" 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="1.5.1.2" 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="1.5.1.3" 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="1.5.1.4" 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="1.5.1.5" 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="1.5.1.6" 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="1.5.1.7" 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="1.5.1.8" 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="1.5.1.9" 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="1.5.1.10" 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="1.5.2" 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="1.5.2.1" 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="1.5.2.2" 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="1.5.2.3" 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="1.5.2.4" 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="1.5.3" 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="1.5.3.1" 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="1.5.3.2" 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="1.5.3.3" 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="1.5.3.4" 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="1.5.3.5" 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="1.5.3.6" 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>
|
||
|
||
<li class="chapter " data-level="1.5.3.7" data-path="../practice/manage-compute-resources-container.html">
|
||
|
||
<a href="../practice/manage-compute-resources-container.html">
|
||
|
||
|
||
4.3.7 管理容器的计算资源
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5.3.8" data-path="../practice/using-prometheus-to-monitor-kuberentes-cluster.html">
|
||
|
||
<a href="../practice/using-prometheus-to-monitor-kuberentes-cluster.html">
|
||
|
||
|
||
4.3.8 使用Prometheus监控kubernetes集群
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5.3.9" data-path="../practice/using-heapster-to-get-object-metrics.html">
|
||
|
||
<a href="../practice/using-heapster-to-get-object-metrics.html">
|
||
|
||
|
||
4.3.9 使用Heapster获取集群和对象的metric数据
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5.3.10" data-path="../practice/manually-upgrade.html">
|
||
|
||
<a href="../practice/manually-upgrade.html">
|
||
|
||
|
||
4.3.10 手动集群升级
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5.4" 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="1.5.4.1" data-path="../practice/glusterfs.html">
|
||
|
||
<a href="../practice/glusterfs.html">
|
||
|
||
|
||
4.4.1 GlusterFS
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.4.1.1" 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="1.5.4.1.2" 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>
|
||
|
||
<li class="chapter " data-level="1.5.4.2" data-path="../practice/cephfs.html">
|
||
|
||
<a href="../practice/cephfs.html">
|
||
|
||
|
||
4.4.2 CephFS
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.4.2.1" 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
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5.5" data-path="../practice/services-management-tool.html">
|
||
|
||
<a href="../practice/services-management-tool.html">
|
||
|
||
|
||
4.5 服务编排管理
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.5.1" data-path="../practice/helm.html">
|
||
|
||
<a href="../practice/helm.html">
|
||
|
||
|
||
4.5.1 Helm
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.6" data-path="../usecases/">
|
||
|
||
<a href="../usecases/">
|
||
|
||
|
||
5. 领域应用
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.6.1" 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="1.6.1.1" data-path="../usecases/service-discovery-in-microservices.html">
|
||
|
||
<a href="../usecases/service-discovery-in-microservices.html">
|
||
|
||
|
||
5.1.1 微服务中的服务发现
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.6.2" data-path="../usecases/service-mesh.html">
|
||
|
||
<a href="../usecases/service-mesh.html">
|
||
|
||
|
||
5.2 Service Mesh 服务网格
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.6.2.1" data-path="../usecases/istio.html">
|
||
|
||
<a href="../usecases/istio.html">
|
||
|
||
|
||
5.1.1 Istio
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.6.2.1.1" 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="1.6.2.1.2" 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="1.6.2.2" data-path="../usecases/linkerd.html">
|
||
|
||
<a href="../usecases/linkerd.html">
|
||
|
||
|
||
5.1.2 Linkerd
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.6.2.2.1" 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>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.6.3" 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="1.6.3.1" 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>
|
||
|
||
<li class="chapter " data-level="1.6.3.2" data-path="../usecases/running-spark-with-kubernetes-native-scheduler.html">
|
||
|
||
<a href="../usecases/running-spark-with-kubernetes-native-scheduler.html">
|
||
|
||
|
||
5.2.2 运行支持kubernetes原生调度的Spark程序
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.6.4" data-path="../usecases/serverless.html">
|
||
|
||
<a href="../usecases/serverless.html">
|
||
|
||
|
||
5.3 Serverless架构
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.7" data-path="../develop/">
|
||
|
||
<a href="../develop/">
|
||
|
||
|
||
6. 开发指南
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.7.1" 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="1.7.2" 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="1.7.3" 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="1.7.4" 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="1.8" data-path="../appendix/">
|
||
|
||
<a href="../appendix/">
|
||
|
||
|
||
7. 附录
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.8.1" 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="1.8.2" data-path="../appendix/issues.html">
|
||
|
||
<a href="../appendix/issues.html">
|
||
|
||
|
||
7.2 问题记录
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.8.3" data-path="../appendix/tricks.html">
|
||
|
||
<a href="../appendix/tricks.html">
|
||
|
||
|
||
7.3 使用技巧
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.8.4" data-path="../appendix/debug-kubernetes-services.html">
|
||
|
||
<a href="../appendix/debug-kubernetes-services.html">
|
||
|
||
|
||
7.4 kubernetes service中的故障排查
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.8.5" data-path="../appendix/material-share.html">
|
||
|
||
<a href="../appendix/material-share.html">
|
||
|
||
|
||
7.5 Kubernetes相关资讯和情报链接
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
|
||
|
||
|
||
<li class="divider"></li>
|
||
|
||
<li>
|
||
<a href="https://www.gitbook.com" target="blank" class="gitbook-link">
|
||
本书使用 GitBook 发布
|
||
</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=".." >2.2.5 Volume和Persistent Volume</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="kubernetes存储卷">Kubernetes存储卷</h1>
|
||
<p>我们知道默认情况下容器的数据都是非持久化的，在容器消亡以后数据也跟着丢失，所以Docker提供了Volume机制以便将数据持久化存储。类似的，Kubernetes提供了更强大的Volume机制和丰富的插件，解决了容器数据持久化和容器间共享数据的问题。</p>
|
||
<h2 id="volume">Volume</h2>
|
||
<p>目前，Kubernetes支持以下Volume类型：</p>
|
||
<ul>
|
||
<li>emptyDir</li>
|
||
<li>hostPath</li>
|
||
<li>gcePersistentDisk</li>
|
||
<li>awsElasticBlockStore</li>
|
||
<li>nfs</li>
|
||
<li>iscsi</li>
|
||
<li>flocker</li>
|
||
<li>glusterfs</li>
|
||
<li>rbd</li>
|
||
<li>cephfs</li>
|
||
<li>gitRepo</li>
|
||
<li>secret</li>
|
||
<li>persistentVolumeClaim</li>
|
||
<li>downwardAPI</li>
|
||
<li>azureFileVolume</li>
|
||
<li>vsphereVolume</li>
|
||
<li>flexvolume</li>
|
||
</ul>
|
||
<p>注意，这些volume并非全部都是持久化的，比如emptyDir、secret、gitRepo等，这些volume会随着Pod的消亡而消失。</p>
|
||
<h2 id="persistentvolume">PersistentVolume</h2>
|
||
<p>对于持久化的Volume，PersistentVolume (PV)和PersistentVolumeClaim (PVC)提供了更方便的管理卷的方法：PV提供网络存储资源，而PVC请求存储资源。这样，设置持久化的工作流包括配置底层文件系统或者云数据卷、创建持久性数据卷、最后创建claim来将pod跟数据卷关联起来。PV和PVC可以将pod和数据卷解耦，pod不需要知道确切的文件系统或者支持它的持久化引擎。</p>
|
||
<h3 id="pv">PV</h3>
|
||
<p>PersistentVolume（PV）是集群之中的一块网络存储。跟 Node 一样，也是集群的资源。PV 跟 Volume (卷) 类似，不过会有独立于 Pod 的生命周期。比如一个NFS的PV可以定义为</p>
|
||
<pre><code class="lang-yaml"><span class="hljs-attr">apiVersion:</span> v1
|
||
<span class="hljs-attr">kind:</span> PersistentVolume
|
||
<span class="hljs-attr">metadata:</span>
|
||
<span class="hljs-attr"> name:</span> pv0003
|
||
<span class="hljs-attr">spec:</span>
|
||
<span class="hljs-attr"> capacity:</span>
|
||
<span class="hljs-attr"> storage:</span> <span class="hljs-number">5</span>Gi
|
||
<span class="hljs-attr"> accessModes:</span>
|
||
<span class="hljs-bullet"> -</span> ReadWriteOnce
|
||
<span class="hljs-attr"> persistentVolumeReclaimPolicy:</span> Recycle
|
||
<span class="hljs-attr"> nfs:</span>
|
||
<span class="hljs-attr"> path:</span> /tmp
|
||
<span class="hljs-attr"> server:</span> <span class="hljs-number">172.17</span><span class="hljs-number">.0</span><span class="hljs-number">.2</span>
|
||
</code></pre>
|
||
<p>PV的访问模式有三种：</p>
|
||
<ul>
|
||
<li>第一种，ReadWriteOnce：是最基本的方式，可读可写，但只支持被单个Pod挂载。</li>
|
||
<li>第二种，ReadOnlyMany：可以以只读的方式被多个Pod挂载。</li>
|
||
<li>第三种，ReadWriteMany：这种存储可以以读写的方式被多个Pod共享。不是每一种存储都支持这三种方式，像共享方式，目前支持的还比较少，比较常用的是NFS。在PVC绑定PV时通常根据两个条件来绑定，一个是存储的大小，另一个就是访问模式。</li>
|
||
</ul>
|
||
<h3 id="storageclass">StorageClass</h3>
|
||
<p>上面通过手动的方式创建了一个NFS Volume，这在管理很多Volume的时候不太方便。Kubernetes还提供了<a href="https://kubernetes.io/docs/user-guide/persistent-volumes/#storageclasses" target="_blank">StorageClass</a>来动态创建PV，不仅节省了管理员的时间，还可以封装不同类型的存储供PVC选用。</p>
|
||
<p>GCE的例子：</p>
|
||
<pre><code class="lang-yaml"><span class="hljs-attr">kind:</span> StorageClass
|
||
<span class="hljs-attr">apiVersion:</span> storage.k8s.io/v1beta1
|
||
<span class="hljs-attr">metadata:</span>
|
||
<span class="hljs-attr"> name:</span> slow
|
||
<span class="hljs-attr">provisioner:</span> kubernetes.io/gce-pd
|
||
<span class="hljs-attr">parameters:</span>
|
||
<span class="hljs-attr"> type:</span> pd-standard
|
||
<span class="hljs-attr"> zone:</span> us-central1-a
|
||
</code></pre>
|
||
<p>Ceph RBD的例子：</p>
|
||
<pre><code class="lang-yaml"><span class="hljs-attr">apiVersion:</span> storage.k8s.io/v1beta1
|
||
<span class="hljs-attr">kind:</span> StorageClass
|
||
<span class="hljs-attr">metadata:</span>
|
||
<span class="hljs-attr"> name:</span> fast
|
||
<span class="hljs-attr">provisioner:</span> kubernetes.io/rbd
|
||
<span class="hljs-attr">parameters:</span>
|
||
<span class="hljs-attr"> monitors:</span> <span class="hljs-number">10.16</span><span class="hljs-number">.153</span><span class="hljs-number">.105</span>:<span class="hljs-number">6789</span>
|
||
<span class="hljs-attr"> adminId:</span> kube
|
||
<span class="hljs-attr"> adminSecretName:</span> ceph-secret
|
||
<span class="hljs-attr"> adminSecretNamespace:</span> kube-system
|
||
<span class="hljs-attr"> pool:</span> kube
|
||
<span class="hljs-attr"> userId:</span> kube
|
||
<span class="hljs-attr"> userSecretName:</span> ceph-secret-user
|
||
</code></pre>
|
||
<h3 id="pvc">PVC</h3>
|
||
<p>PV是存储资源，而PersistentVolumeClaim (PVC) 是对PV的请求。PVC跟Pod类似：Pod消费Node的源，而PVC消费PV资源；Pod能够请求CPU和内存资源，而PVC请求特定大小和访问模式的数据卷。</p>
|
||
<pre><code class="lang-yaml"><span class="hljs-attr">kind:</span> PersistentVolumeClaim
|
||
<span class="hljs-attr">apiVersion:</span> v1
|
||
<span class="hljs-attr">metadata:</span>
|
||
<span class="hljs-attr"> name:</span> myclaim
|
||
<span class="hljs-attr">spec:</span>
|
||
<span class="hljs-attr"> accessModes:</span>
|
||
<span class="hljs-bullet"> -</span> ReadWriteOnce
|
||
<span class="hljs-attr"> resources:</span>
|
||
<span class="hljs-attr"> requests:</span>
|
||
<span class="hljs-attr"> storage:</span> <span class="hljs-number">8</span>Gi
|
||
<span class="hljs-attr"> selector:</span>
|
||
<span class="hljs-attr"> matchLabels:</span>
|
||
<span class="hljs-attr"> release:</span> <span class="hljs-string">"stable"</span>
|
||
<span class="hljs-attr"> matchExpressions:</span>
|
||
<span class="hljs-bullet"> -</span> {key: environment, operator: In, values: [dev]}
|
||
</code></pre>
|
||
<p>PVC可以直接挂载到Pod中：</p>
|
||
<pre><code class="lang-yaml"><span class="hljs-attr">kind:</span> Pod
|
||
<span class="hljs-attr">apiVersion:</span> v1
|
||
<span class="hljs-attr">metadata:</span>
|
||
<span class="hljs-attr"> name:</span> mypod
|
||
<span class="hljs-attr">spec:</span>
|
||
<span class="hljs-attr"> containers:</span>
|
||
<span class="hljs-attr"> - name:</span> myfrontend
|
||
<span class="hljs-attr"> image:</span> dockerfile/nginx
|
||
<span class="hljs-attr"> volumeMounts:</span>
|
||
<span class="hljs-attr"> - mountPath:</span> <span class="hljs-string">"/var/www/html"</span>
|
||
<span class="hljs-attr"> name:</span> mypd
|
||
<span class="hljs-attr"> volumes:</span>
|
||
<span class="hljs-attr"> - name:</span> mypd
|
||
<span class="hljs-attr"> persistentVolumeClaim:</span>
|
||
<span class="hljs-attr"> claimName:</span> myclaim
|
||
</code></pre>
|
||
<h2 id="emptydir">emptyDir</h2>
|
||
<p>如果Pod配置了emptyDir类型Volume， Pod 被分配到Node上时候，会创建emptyDir，只要Pod运行在Node上，emptyDir都会存在（容器挂掉不会导致emptyDir丢失数据），但是如果Pod从Node上被删除（Pod被删除，或者Pod发生迁移），emptyDir也会被删除，并且永久丢失。</p>
|
||
<pre><code class="lang-yaml"><span class="hljs-attr">apiVersion:</span> v1
|
||
<span class="hljs-attr">kind:</span> Pod
|
||
<span class="hljs-attr">metadata:</span>
|
||
<span class="hljs-attr"> name:</span> test-pd
|
||
<span class="hljs-attr">spec:</span>
|
||
<span class="hljs-attr"> containers:</span>
|
||
<span class="hljs-attr"> - image:</span> gcr.io/google_containers/test-webserver
|
||
<span class="hljs-attr"> name:</span> test-container
|
||
<span class="hljs-attr"> volumeMounts:</span>
|
||
<span class="hljs-attr"> - mountPath:</span> /test-pd
|
||
<span class="hljs-attr"> name:</span> test-volume
|
||
<span class="hljs-attr"> volumes:</span>
|
||
<span class="hljs-attr"> - name:</span> test-volume
|
||
<span class="hljs-attr"> hostPath:</span>
|
||
<span class="hljs-comment"># directory location on host</span>
|
||
<span class="hljs-attr"> path:</span> /data
|
||
</code></pre>
|
||
<h2 id="其他volume说明">其他Volume说明</h2>
|
||
<h3 id="hostpath">hostPath</h3>
|
||
<p>hostPath允许挂载Node上的文件系统到Pod里面去。如果Pod有需要使用Node上的文件，可以使用hostPath。</p>
|
||
<pre><code class="lang-yaml"><span class="hljs-attr">- hostPath:</span>
|
||
<span class="hljs-attr"> path:</span> /tmp/data
|
||
<span class="hljs-attr"> name:</span> data
|
||
</code></pre>
|
||
<h3 id="nfs">NFS</h3>
|
||
<p>NFS 是Network File System的缩写，即网络文件系统。Kubernetes中通过简单地配置就可以挂载NFS到Pod中，而NFS中的数据是可以永久保存的，同时NFS支持同时写操作。</p>
|
||
<pre><code class="lang-yaml"><span class="hljs-attr">volumes:</span>
|
||
<span class="hljs-attr">- name:</span> nfs
|
||
<span class="hljs-attr"> nfs:</span>
|
||
<span class="hljs-comment"># <span class="hljs-doctag">FIXME:</span> use the right hostname</span>
|
||
<span class="hljs-attr"> server:</span> <span class="hljs-number">10.254</span><span class="hljs-number">.234</span><span class="hljs-number">.223</span>
|
||
<span class="hljs-attr"> path:</span> <span class="hljs-string">"/"</span>
|
||
</code></pre>
|
||
<h3 id="flexvolume">FlexVolume</h3>
|
||
<p>注意要把volume plugin放到<code>/usr/libexec/kubernetes/kubelet-plugins/volume/exec/<vendor~driver>/<driver></code>，plugin要实现<code>init/attach/detach/mount/umount</code>等命令（可参考lvm的<a href="https://github.com/kubernetes/kubernetes/tree/master/examples/volumes/flexvolume" target="_blank">示例</a>）。</p>
|
||
<pre><code class="lang-yaml"><span class="hljs-attr"> - name:</span> test
|
||
<span class="hljs-attr"> flexVolume:</span>
|
||
<span class="hljs-attr"> driver:</span> <span class="hljs-string">"kubernetes.io/lvm"</span>
|
||
<span class="hljs-attr"> fsType:</span> <span class="hljs-string">"ext4"</span>
|
||
<span class="hljs-attr"> options:</span>
|
||
<span class="hljs-attr"> volumeID:</span> <span class="hljs-string">"vol1"</span>
|
||
<span class="hljs-attr"> size:</span> <span class="hljs-string">"1000m"</span>
|
||
<span class="hljs-attr"> volumegroup:</span> <span class="hljs-string">"kube_vg"</span>
|
||
</code></pre>
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<script src="../gitbook/gitbook-plugin-fontsettings/fontsettings.js"></script>
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||
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</body>
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||
</html>
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