From f07644ae5787161df6886b44abb43cdaa2ce20b4 Mon Sep 17 00:00:00 2001
From: Wang Bing <wangbing.adam@gmail.com>
Date: Thu, 6 Dec 2018 10:50:12 +0800
Subject: [PATCH] =?UTF-8?q?zh-trans:=20content/zh/docs/tasks/configure-pod?=
 =?UTF-8?q?-container/attach-handle=E2=80=A6=20(#11420)?=
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* zh-trans: content/zh/docs/tasks/configure-pod-container/attach-handler-lifecycle-event.md

* Add examples pods yaml files

* Update translation

* Update trans

* Update tran
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+---
+title: 为容器生命周期事件添加处理程序
+content_template: templates/task
+weight: 140
+---
+<!--
+{{% capture overview %}}
+
+This page shows how to attach handlers to Container lifecycle events. Kubernetes supports
+the postStart and preStop events. Kubernetes sends the postStart event immediately
+after a Container is started, and it sends the preStop event immediately before the
+Container is terminated.
+
+{{% /capture %}}
+-->
+
+{{% capture overview %}}
+
+本页面展示了如何将容器生命周期事件绑定到处理程序上。Kubernetes 支持 postStart 和 preStop 事件。Kubernetes 在启动容器之后会立即发送 postStart 事件
+，在容器终止之前会立即发送 preStop 事件。
+
+{{% /capture %}}
+
+{{% capture prerequisites %}}
+
+{{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
+
+{{% /capture %}}
+
+{{% capture steps %}}
+
+<!--
+## Define postStart and preStop handlers
+
+In this exercise, you create a Pod that has one Container. The Container has handlers
+for the postStart and preStop events.
+
+Here is the configuration file for the Pod:
+-->
+
+## 定义 postStart 和 preStop 处理程序
+
+在本练习中，您将创建一个具有一个容器的 Pod。该容器包含用于处理 postStart 和 preStop 事件的程序。
+
+这是 Pod 的配置文件：
+
+{{< codenew file="pods/lifecycle-events.yaml" >}}
+
+<!--
+In the configuration file, you can see that the postStart command writes a `message`
+file to the Container's `/usr/share` directory. The preStop command shuts down
+nginx gracefully. This is helpful if the Container is being terminated because of a failure.
+-->
+在配置文件中，您可以看到 postStart 命令写入 `message` 文件到容器的的 `/usr/share` 目录。preStop 命令优雅地关闭了 nginx 。如果容器因故障而终止，这就会非常有用。
+
+<!--
+Create the Pod:
+
+    kubectl create -f https://k8s.io/examples/pods/lifecycle-events.yaml
+-->
+创建 Pod:
+
+    kubectl create -f https://k8s.io/examples/pods/lifecycle-events.yaml
+
+<!--
+Verify that the Container in the Pod is running:
+
+    kubectl get pod lifecycle-demo
+-->
+验证 Pod 里的容器处于运行状态:
+
+    kubectl get pod lifecycle-demo
+
+<!--
+Get a shell into the Container running in your Pod:
+
+    kubectl exec -it lifecycle-demo -- /bin/bash
+-->
+
+获取一个访问 Pod 中运行容器的 shell:
+
+    kubectl exec -it lifecycle-demo -- /bin/bash
+
+<!--
+In your shell, verify that the `postStart` handler created the `message` file:
+
+    root@lifecycle-demo:/# cat /usr/share/message
+-->
+在 shell 中，验证 `postStart` 处理程序是否创建了 `message` 文件:
+
+    root@lifecycle-demo:/# cat /usr/share/message
+<!---
+The output shows the text written by the postStart handler:
+
+    Hello from the postStart handler
+-->
+输出显示 postStart 处理程序写入的文本:
+
+    Hello from the postStart handler
+
+{{% /capture %}}
+
+{{% capture discussion %}}
+
+<!--
+## Discussion
+
+Kubernetes sends the postStart event immediately after the Container is created.
+There is no guarantee, however, that the postStart handler is called before
+the Container's entrypoint is called. The postStart handler runs asynchronously
+relative to the Container's code, but Kubernetes' management of the container
+blocks until the postStart handler completes. The Container's status is not
+set to RUNNING until the postStart handler completes.
+-->
+
+## 讨论
+
+Kubernetes 在创建容器后立即发送 postStart 事件。但是，不能保证 postStart 处理程序
+在容器的 entrypoint 调用之前被调用。相对于容器的代码，postStart 处理程序以异步方式运行，但 Kubernetes 对容器的管理
+会阻塞直到 postStart 处理程序完成。容器的状态直到 postStart 处理程序完成后才会设置为 RUNNING 。
+
+<!--
+Kubernetes sends the preStop event immediately before the Container is terminated.
+Kubernetes' management of the Container blocks until the preStop handler completes,
+unless the Pod's grace period expires. For more details, see
+[Termination of Pods](/docs/user-guide/pods/#termination-of-pods).
+-->
+Kubernetes 在容器终止之前立即发送 preStop 事件。
+Kubernetes 对容器的管理一直阻塞直到 preStop 处理程序完成， 除非 Pod 的宽限期过期。有关详细信息，请参阅
+[Pods 的终止](/docs/user-guide/pods/#termination-of-pods) 。
+
+{{< note >}}
+<!--
+Kubernetes only sends the preStop event when a Pod is *terminated*.
+This means that the preStop hook is not invoked when the Pod is *completed*. 
+This limitation is tracked in [issue #55087](https://github.com/kubernetes/kubernetes/issues/55807).
+-->
+Kubernetes 仅在 Pod 是 *terminated* 时发送 preStop 事件。这意味着当 Pod 是 *completed* 状态时，preStop 钩子程序不会被触发。
+这个限制被记录在 [issue #55087](https://github.com/kubernetes/kubernetes/issues/55807) 中。
+{{< /note >}}
+
+{{% /capture %}}
+
+
+{{% capture whatsnext %}}
+
+<!--
+* Learn more about [Container lifecycle hooks](/docs/concepts/containers/container-lifecycle-hooks/).
+* Learn more about the [lifecycle of a Pod](/docs/concepts/workloads/pods/pod-lifecycle/).
+-->
+
+* 进一步了解 [容器生命周期钩子](/docs/concepts/containers/container-lifecycle-hooks/).
+* 进一步了解 [Pod 的生命周期](/docs/concepts/workloads/pods/pod-lifecycle/).
+
+<!--
+### Reference
+
+* [Lifecycle](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#lifecycle-v1-core)
+* [Container](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#container-v1-core)
+* See `terminationGracePeriodSeconds` in [PodSpec](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#podspec-v1-core)
+-->
+
+### 参考
+
+* [Lifecycle](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#lifecycle-v1-core)
+* [Container](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#container-v1-core)
+* 查看 [PodSpec](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#podspec-v1-core) 文档中关于 `terminationGracePeriodSeconds` 的说明
+
+{{% /capture %}}