165 lines
5.4 KiB
Markdown
165 lines
5.4 KiB
Markdown
---
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title: 删除 StatefulSet
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content_type: task
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weight: 60
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---
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<!--
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reviewers:
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- bprashanth
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- erictune
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- foxish
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- janetkuo
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- smarterclayton
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title: Delete a StatefulSet
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content_type: task
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weight: 60
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-->
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<!-- overview -->
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<!--
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This task shows you how to delete a {{< glossary_tooltip term_id="StatefulSet" >}}.
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-->
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本任务展示如何删除 {{< glossary_tooltip text="StatefulSet" term_id="StatefulSet" >}}。
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## {{% heading "prerequisites" %}}
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<!--
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- This task assumes you have an application running on your cluster represented by a StatefulSet.
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-->
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- 本任务假设在你的集群上已经运行了由 StatefulSet 创建的应用。
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<!-- steps -->
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<!--
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## Deleting a StatefulSet
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You can delete a StatefulSet in the same way you delete other resources in Kubernetes:
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use the `kubectl delete` command, and specify the StatefulSet either by file or by name.
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-->
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## 删除 StatefulSet {#deleting-a-statefulset}
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你可以像删除 Kubernetes 中的其他资源一样删除 StatefulSet：
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使用 `kubectl delete` 命令，并按文件或者名字指定 StatefulSet。
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```shell
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kubectl delete -f <file.yaml>
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```
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<!--
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```shell
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kubectl delete statefulsets <statefulset-name>
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```
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-->
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```shell
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kubectl delete statefulsets <statefulset 名称>
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```
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<!--
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You may need to delete the associated headless service separately after the StatefulSet itself is deleted.
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```shell
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kubectl delete service <service-name>
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```
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-->
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删除 StatefulSet 之后，你可能需要单独删除关联的无头服务（Headless Service）。
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```shell
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kubectl delete service <Service 名称>
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```
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<!--
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When deleting a StatefulSet through `kubectl`, the StatefulSet scales down to 0.
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All Pods that are part of this workload are also deleted. If you want to delete
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only the StatefulSet and not the Pods, use `--cascade=orphan`. For example:
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--->
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当通过 `kubectl` 删除 StatefulSet 时，StatefulSet 会被缩容为 0。
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属于该 StatefulSet 的所有 Pod 也被删除。
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如果你只想删除 StatefulSet 而不删除 Pod，使用 `--cascade=orphan`。
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```shell
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kubectl delete -f <file.yaml> --cascade=orphan
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```
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<!--
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By passing `--cascade=orphan` to `kubectl delete`, the Pods managed by the StatefulSet
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are left behind even after the StatefulSet object itself is deleted. If the pods have
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a label `app.kubernetes.io/name=MyApp`, you can then delete them as follows:
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--->
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通过将 `--cascade=orphan` 传递给 `kubectl delete`，在删除 StatefulSet 对象之后，
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StatefulSet 管理的 Pod 会被保留下来。如果 Pod 具有标签 `app.kubernetes.io/name=MyApp`，
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则可以按照如下方式删除它们：
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```shell
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kubectl delete pods -l app.kubernetes.io/name=MyApp
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```
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<!--
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### Persistent Volumes
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Deleting the Pods in a StatefulSet will not delete the associated volumes.
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This is to ensure that you have the chance to copy data off the volume before
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deleting it. Deleting the PVC after the pods have terminated might trigger
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deletion of the backing Persistent Volumes depending on the storage class
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and reclaim policy. You should never assume ability to access a volume
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after claim deletion.
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-->
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### 持久卷 {#persistent-volumes}
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删除 StatefulSet 管理的 Pod 并不会删除关联的卷。这是为了确保你有机会在删除卷之前从卷中复制数据。
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在 Pod 已经终止后删除 PVC 可能会触发删除背后的 PV 持久卷，具体取决于存储类和回收策略。
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永远不要假定在 PVC 删除后仍然能够访问卷。
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{{< note >}}
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<!--
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Use caution when deleting a PVC, as it may lead to data loss.
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-->
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删除 PVC 时要谨慎，因为这可能会导致数据丢失。
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{{< /note >}}
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<!--
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### Complete deletion of a StatefulSet
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To delete everything in a StatefulSet, including the associated pods,
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you can run a series of commands similar to the following:
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-->
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### 完全删除 StatefulSet {#complete-deletion-of-a-statefulset}
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要删除 StatefulSet 中的所有内容，包括关联的 Pod，
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你可以运行如下所示的一系列命令：
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```shell
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grace=$(kubectl get pods <stateful-set-pod> --template '{{.spec.terminationGracePeriodSeconds}}')
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kubectl delete statefulset -l app.kubernetes.io/name=MyApp
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sleep $grace
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kubectl delete pvc -l app.kubernetes.io/name=MyApp
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```
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<!--
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In the example above, the Pods have the label `app.kubernetes.io/name=MyApp`;
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substitute your own label as appropriate.
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-->
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在上面的例子中，Pod 的标签为 `app.kubernetes.io/name=MyApp`；适当地替换你自己的标签。
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<!--
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### Force deletion of StatefulSet pods
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If you find that some pods in your StatefulSet are stuck in the 'Terminating'
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or 'Unknown' states for an extended period of time, you may need to manually
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intervene to forcefully delete the pods from the apiserver.
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This is a potentially dangerous task. Refer to
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[Force Delete StatefulSet Pods](/docs/tasks/run-application/force-delete-stateful-set-pod/)
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-->
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### 强制删除 StatefulSet 的 Pod {#force-deletion-of-statefulset-pods}
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如果你发现 StatefulSet 的某些 Pod 长时间处于 'Terminating' 或者 'Unknown' 状态，
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则可能需要手动干预以强制从 API 服务器中删除这些 Pod。这是一项有点危险的任务。
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详细信息请阅读[强制删除 StatefulSet 的 Pod](/zh-cn/docs/tasks/run-application/force-delete-stateful-set-pod/)。
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## {{% heading "whatsnext" %}}
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<!--
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Learn more about [force deleting StatefulSet Pods](/docs/tasks/run-application/force-delete-stateful-set-pod/).
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-->
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进一步了解[强制删除 StatefulSet 的 Pod](/zh-cn/docs/tasks/run-application/force-delete-stateful-set-pod/)。
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