[zh] update concept workload pods
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Mayo
@@ -12,7 +12,7 @@ weight: 80
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<!-- overview -->
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{{< feature-state state="alpha" for_k8s_version="v1.16" >}}
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{{< feature-state state="alpha" for_k8s_version="v1.22" >}}
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<!--
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This page provides an overview of ephemeral containers: a special type of container
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@@ -27,14 +27,12 @@ containers to inspect services rather than to build applications.
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{{< warning >}}
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<!--
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Ephemeral containers are in early alpha state and are not suitable for production
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clusters. You should expect the feature not to work in some situations, such as
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when targeting the namespaces of a container. In accordance with the [Kubernetes
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Deprecation Policy](/docs/reference/using-api/deprecation-policy/), this alpha
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feature could change significantly in the future or be removed entirely.
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Ephemeral containers are in alpha state and are not suitable for production
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clusters. In accordance with the [Kubernetes Deprecation Policy](
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/docs/reference/using-api/deprecation-policy/), this alpha feature could change
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significantly in the future or be removed entirely.
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-->
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临时容器处于早期的 Alpha 阶段，不适用于生产环境集群。
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应该预料到临时容器在某些情况下不起作用，例如在定位容器的命名空间时。
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临时容器处于 Alpha 阶段，不适用于生产环境集群。
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根据 [Kubernetes 弃用政策](/zh/docs/reference/using-api/deprecation-policy/)，
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此 Alpha 功能将来可能发生重大变化或被完全删除。
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{{< /warning >}}
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@@ -141,151 +139,8 @@ you can view processes in other containers.
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[进程名字空间共享](/zh/docs/tasks/configure-pod-container/share-process-namespace/)
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很有帮助，可以查看其他容器中的进程。
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{{% heading "whatsnext" %}}
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<!--
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See [Debugging with Ephemeral Debug Container](/docs/tasks/debug-application-cluster/debug-running-pod/#ephemeral-container)
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for examples of troubleshooting using ephemeral containers.
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* Learn how to [debug pods using ephemeral containers](/docs/tasks/debug-application-cluster/debug-running-pod/#ephemeral-container).
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-->
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关于如何使用临时容器来执行故障排查的例子，可参阅
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[使用临时调试容器来调试](/zh/docs/tasks/debug-application-cluster/debug-running-pod/#ephemeral-container)。
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<!--
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## Ephemeral containers API
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-->
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### 临时容器 API {#ephemeral-containers-api}
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{{< note >}}
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<!--
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The examples in this section require the `EphemeralContainers` [feature
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gate](/docs/reference/command-line-tools-reference/feature-gates/) to be
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enabled, and Kubernetes client and server version v1.16 or later.
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-->
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本节中的示例要求启用 `EphemeralContainers`
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[特性门控](/zh/docs/reference/command-line-tools-reference/feature-gates/)，
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并且 kubernetes 客户端和服务端版本要求为 v1.16 或更高版本。
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{{< /note >}}
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<!--
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The examples in this section demonstrate how ephemeral containers appear in
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the API. You would normally use `kubectl debug` or another `kubectl`
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[plugin](/docs/tasks/extend-kubectl/kubectl-plugins/) to automate these steps
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rather than invoking the API directly.
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-->
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本节中的示例演示了临时容器如何出现在 API 中。
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通常，你会使用 `kubectl debug` 或别的 `kubectl`
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[插件](/zh/docs/tasks/extend-kubectl/kubectl-plugins/) 自动执行这些步骤，而不是直接调用API。
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<!--
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Ephemeral containers are created using the `ephemeralcontainers` subresource
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of Pod, which can be demonstrated using `kubectl -raw`. First describe
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the ephemeral container to add as an `EphemeralContainers` list:
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-->
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临时容器是使用 Pod 的 `ephemeralcontainers` 子资源创建的，可以使用
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`kubectl --raw` 命令进行显示。
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首先描述临时容器被添加为一个 `EphemeralContainers` 列表：
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```json
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{
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"apiVersion": "v1",
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"kind": "EphemeralContainers",
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"metadata": {
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"name": "example-pod"
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},
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"ephemeralContainers": [{
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"command": [
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"sh"
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],
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"image": "busybox",
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"imagePullPolicy": "IfNotPresent",
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"name": "debugger",
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"stdin": true,
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"tty": true,
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"terminationMessagePolicy": "File"
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}]
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}
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```
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<!--
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To update the ephemeral containers of the already running `example-pod`:
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-->
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使用如下命令更新已运行的临时容器 `example-pod`：
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```shell
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kubectl replace --raw /api/v1/namespaces/default/pods/example-pod/ephemeralcontainers -f ec.json
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```
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<!--
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This will return the new list of ephemeral containers:
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-->
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这将返回临时容器的新列表：
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```json
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{
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"kind":"EphemeralContainers",
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"apiVersion":"v1",
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"metadata":{
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"name":"example-pod",
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"namespace":"default",
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"selfLink":"/api/v1/namespaces/default/pods/example-pod/ephemeralcontainers",
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"uid":"a14a6d9b-62f2-4119-9d8e-e2ed6bc3a47c",
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"resourceVersion":"15886",
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"creationTimestamp":"2019-08-29T06:41:42Z"
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},
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"ephemeralContainers":[
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{
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"name":"debugger",
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"image":"busybox",
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"command":[
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"sh"
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],
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"resources":{
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},
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"terminationMessagePolicy":"File",
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"imagePullPolicy":"IfNotPresent",
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"stdin":true,
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"tty":true
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}
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]
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}
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```
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<!--
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You can view the state of the newly created ephemeral container using `kubectl describe`:
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-->
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可以使用以下命令查看新创建的临时容器的状态：
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```shell
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kubectl describe pod example-pod
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```
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输出为：
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```
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...
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Ephemeral Containers:
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debugger:
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Container ID: docker://cf81908f149e7e9213d3c3644eda55c72efaff67652a2685c1146f0ce151e80f
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Image: busybox
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Image ID: docker-pullable://busybox@sha256:9f1003c480699be56815db0f8146ad2e22efea85129b5b5983d0e0fb52d9ab70
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Port: <none>
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Host Port: <none>
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Command:
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sh
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State: Running
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Started: Thu, 29 Aug 2019 06:42:21 +0000
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Ready: False
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Restart Count: 0
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Environment: <none>
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Mounts: <none>
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...
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```
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<!--
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You can attach to the new ephemeral container using `kubectl attach`:
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-->
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可以使用以下命令连接到新的临时容器：
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```shell
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kubectl attach -it example-pod -c debugger
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```
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* 了解如何[使用临时调试容器来进行调试](/zh/docs/tasks/debug-application-cluster/debug-running-pod/#ephemeral-container)
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