Kubernetes Prow Robot
GitHub
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8bccb4a594
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@ -443,18 +443,10 @@ overlays), the `emptyDir` may run out of capacity before this limit.
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如果来自其他来源（如日志文件或镜像分层数据）的数据占满了存储，`emptyDir`
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可能会在达到此限制之前发生存储容量不足的问题。
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{{< note >}}
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<!--
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You can specify a size for memory backed volumes, provided that the `SizeMemoryBackedVolumes`
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[feature gate](/docs/reference/command-line-tools-reference/feature-gates/)
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is enabled in your cluster (this has been beta, and active by default, since the Kubernetes 1.22 release).
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If you don't specify a volume size, memory backed volumes are sized to node allocatable memory.
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If no size is specified, memory backed volumes are sized to node allocatable memory.
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-->
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你可以指定内存作为介质的卷的大小，前提是集群中启用了 `SizeMemoryBackedVolumes`
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[特性门控](/zh-cn/docs/reference/command-line-tools-reference/feature-gates/)
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（自 Kubernetes 1.22 发布以来，此特性一直处于 Beta 阶段，并且默认启用）。
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如果你未指定大小，内存作为介质的卷的大小根据节点可分配内存进行调整。
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{{< /note>}}
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如果未指定大小，内存支持的卷将被设置为节点可分配内存的大小。
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{{< caution >}}
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<!--
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@ -489,6 +481,30 @@ spec:
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sizeLimit: 500Mi
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```
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<!--
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#### emptyDir memory configuration example
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-->
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#### emptyDir 内存配置示例
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```yaml
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apiVersion: v1
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kind: Pod
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metadata:
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name: test-pd
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spec:
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containers:
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- image: registry.k8s.io/test-webserver
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name: test-container
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volumeMounts:
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- mountPath: /cache
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name: cache-volume
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volumes:
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- name: cache-volume
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emptyDir:
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sizeLimit: 500Mi
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medium: Memory
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```
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<!--
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### fc (fibre channel) {#fc}
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@ -1448,7 +1464,7 @@ must be installed on the cluster.
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（Portworx 的 CSI 迁移自 Kubernetes v1.23 版本以来一直可用，但从 v1.31 版本开始才默认启用）。
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如果你想禁用自动迁移，可以将 `CSIMigrationPortworx`
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[特性门控](/zh-cn/docs/reference/command-line-tools-reference/feature-gates/) 设置为 `false`；
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你需要在 kube-controller-manager **和** 每个相关的 kubelet 上进行此更改。
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你需要在 kube-controller-manager **和**每个相关的 kubelet 上进行此更改。
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它将所有插件操作不再指向树内插件（In-Tree Plugin），转而指向
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`pxd.portworx.com` 容器存储接口（Container Storage Interface，CSI）驱动。
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@ -1813,7 +1829,7 @@ CSI 和 FlexVolume 都允许独立于 Kubernetes 代码库开发卷插件，并
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(CSI) defines a standard interface for container orchestration systems (like
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Kubernetes) to expose arbitrary storage systems to their container workloads.
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-->
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[容器存储接口](https://github.com/container-storage-interface/spec/blob/master/spec.md) (CSI)
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[容器存储接口](https://github.com/container-storage-interface/spec/blob/master/spec.md)（CSI）
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为容器编排系统（如 Kubernetes）定义标准接口，以将任意存储系统暴露给它们的容器工作负载。
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<!--
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@ -1929,7 +1945,7 @@ persistent volume:
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该映射必须与 CSI 驱动程序返回的 `CreateVolumeResponse` 中的 `volume.attributes`
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字段的映射相对应；
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[CSI 规范](https://github.com/container-storage-interface/spec/blob/master/spec.md#createvolume)中有相应的定义。
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该映射通过`ControllerPublishVolumeRequest`、`NodeStageVolumeRequest` 和
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该映射通过 `ControllerPublishVolumeRequest`、`NodeStageVolumeRequest` 和
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`NodePublishVolumeRequest` 中的 `volume_context` 字段传递给 CSI 驱动。
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<!--
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@ -1969,8 +1985,8 @@ persistent volume:
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当你为节点初始化的卷扩展配置 Secret 数据时，kubelet 会通过 `NodeExpandVolume()`
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调用将该数据传递给 CSI 驱动。所有受支持的 Kubernetes 版本都提供 `nodeExpandSecretRef` 字段，
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并且默认可用。Kubernetes v1.25 之前的版本不包括此支持。
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为每个 kube-apiserver 和每个节点上的 kubelet 启用名为 `CSINodeExpandSecret` 的
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[特性门控](/zh-cn/docs/reference/command-line-tools-reference/feature-gates-removed/)。
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为每个 kube-apiserver 和每个节点上的 kubelet 启用名为 `CSINodeExpandSecret`
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的[特性门控](/zh-cn/docs/reference/command-line-tools-reference/feature-gates-removed/)。
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自 Kubernetes 1.27 版本起，此特性已默认启用，无需显式启用特性门控。
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在节点初始化的存储大小调整操作期间，你还必须使用支持或需要 Secret 数据的 CSI 驱动。
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@ -2165,8 +2181,9 @@ Pod 通过 `flexvolume` 树内插件与 FlexVolume 驱动程序交互。
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The following FlexVolume [plugins](https://github.com/Microsoft/K8s-Storage-Plugins/tree/master/flexvolume/windows),
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deployed as PowerShell scripts on the host, support Windows nodes:
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-->
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下面的 FlexVolume [插件](https://github.com/Microsoft/K8s-Storage-Plugins/tree/master/flexvolume/windows)
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以 PowerShell 脚本的形式部署在宿主机系统上，支持 Windows 节点：
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下面的 FlexVolume
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[插件](https://github.com/Microsoft/K8s-Storage-Plugins/tree/master/flexvolume/windows)以
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PowerShell 脚本的形式部署在宿主机系统上，支持 Windows 节点：
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* [SMB](https://github.com/microsoft/K8s-Storage-Plugins/tree/master/flexvolume/windows/plugins/microsoft.com~smb.cmd)
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* [iSCSI](https://github.com/microsoft/K8s-Storage-Plugins/tree/master/flexvolume/windows/plugins/microsoft.com~iscsi.cmd)
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@ -2190,12 +2207,12 @@ FlexVolume 用户应迁移工作负载以使用对等的 CSI 驱动。
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## 挂载卷的传播 {#mount-propagation}
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{{< caution >}}
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<!--
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<!--
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Mount propagation is a low-level feature that does not work consistently on all
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volume types. It is recommended to use only with `hostPath` or in-memory `emptyDir`
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volumes. See [this discussion](https://github.com/kubernetes/kubernetes/issues/95049)
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for more context.
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-->
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-->
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挂载卷的传播是一项底层功能，不能在所有类型的卷中以一致的方式工作。
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建议只在 `hostPath` 或基于内存的 `emptyDir` 卷中使用。
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详情请参考[讨论](https://github.com/kubernetes/kubernetes/issues/95049)。
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@ -2235,7 +2252,7 @@ in `containers[*].volumeMounts`. Its values are:
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然而，当 `rprivate` 传播选项不适用时，CRI 运行时可以转为选择 `rslave` 挂载传播选项
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（即 `HostToContainer`）。当挂载源包含 Docker 守护进程的根目录（`/var/lib/docker`）时，
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cri-dockerd (Docker) 已知可以选择 `rslave` 挂载传播选项。
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cri-dockerd（Docker）已知可以选择 `rslave` 挂载传播选项。
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<!--
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* `HostToContainer` - This volume mount will receive all subsequent mounts
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@ -122,6 +122,59 @@ The example below demonstrates the components of a StatefulSet.
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下面的示例演示了 StatefulSet 的组件。
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<!--
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```yaml
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apiVersion: v1
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kind: Service
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metadata:
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name: nginx
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labels:
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app: nginx
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spec:
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ports:
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- port: 80
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name: web
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clusterIP: None
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selector:
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app: nginx
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---
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apiVersion: apps/v1
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kind: StatefulSet
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metadata:
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name: web
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spec:
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selector:
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matchLabels:
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app: nginx # has to match .spec.template.metadata.labels
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serviceName: "nginx"
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replicas: 3 # by default is 1
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minReadySeconds: 10 # by default is 0
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template:
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metadata:
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labels:
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app: nginx # has to match .spec.selector.matchLabels
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spec:
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terminationGracePeriodSeconds: 10
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containers:
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- name: nginx
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image: registry.k8s.io/nginx-slim:0.24
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ports:
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- containerPort: 80
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name: web
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volumeMounts:
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- name: www
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mountPath: /usr/share/nginx/html
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volumeClaimTemplates:
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- metadata:
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name: www
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spec:
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accessModes: [ "ReadWriteOnce" ]
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storageClassName: "my-storage-class"
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resources:
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requests:
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storage: 1Gi
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```
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-->
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```yaml
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apiVersion: v1
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kind: Service
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@ -436,19 +489,20 @@ the StatefulSet.
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-->
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### Pod 索引标签 {#pod-index-label}
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{{< feature-state for_k8s_version="v1.28" state="beta" >}}
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{{< feature-state feature_gate_name="PodIndexLabel" >}}
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<!--
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When the StatefulSet {{<glossary_tooltip text="controller" term_id="controller">}} creates a Pod,
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the new Pod is labelled with `apps.kubernetes.io/pod-index`. The value of this label is the ordinal index of
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the Pod. This label allows you to route traffic to a particular pod index, filter logs/metrics
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using the pod index label, and more. Note the feature gate `PodIndexLabel` must be enabled for this
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feature, and it is enabled by default.
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using the pod index label, and more. Note the feature gate `PodIndexLabel` is enabled and locked by default for this
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feature, in order to disable it, users will have to use server emulated version v1.31.
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-->
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当 StatefulSet {{<glossary_tooltip text="控制器" term_id="controller">}}创建一个 Pod 时，
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新的 Pod 会被打上 `apps.kubernetes.io/pod-index` 标签。标签的取值为 Pod 的序号索引。
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此标签使你能够将流量路由到特定索引值的 Pod、使用 Pod 索引标签来过滤日志或度量值等等。
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注意要使用这一特性需要启用特性门控 `PodIndexLabel`，而该门控默认是被启用的。
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请注意，默认情况下，特性门 `PodIndexLabel` 已启用并锁定。要禁用它，
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用户需要使用服务器模拟版本 v1.31。
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<!--
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## Deployment and Scaling Guarantees
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@ -698,7 +752,7 @@ StatefulSet 才会开始使用被还原的模板来重新创建 Pod。
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-->
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## PersistentVolumeClaim 保留 {#persistentvolumeclaim-retention}
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{{< feature-state for_k8s_version="v1.27" state="beta" >}}
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{{< feature-state feature_gate_name="StatefulSetAutoDeletePVC" >}}
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<!--
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The optional `.spec.persistentVolumeClaimRetentionPolicy` field controls if
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