From 63668a40982afdd0fbd9514845c2776cbd977b19 Mon Sep 17 00:00:00 2001
From: AdamDang <adam.dang@daocloud.io>
Date: Wed, 2 Jan 2019 17:25:35 +0800
Subject: [PATCH] =?UTF-8?q?zh-trans:=20/docs/tasks/debug-application-clust?=
 =?UTF-8?q?er/determine-reason-pod-=E2=80=A6=20(#11977)?=
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* zh-trans: /docs/tasks/debug-application-cluster/determine-reason-pod-failure.md

zh-trans: /docs/tasks/debug-application-cluster/determine-reason-pod-failure.md

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+---
+title: 确定 Pod 失败的原因
+content_template: templates/task
+---
+
+<!--
+---
+title: Determine the Reason for Pod Failure
+content_template: templates/task
+---
+-->
+
+{{% capture overview %}}
+
+<!--
+This page shows how to write and read a Container
+termination message.
+-->
+
+本文介绍如何编写和读取容器的终止消息。
+
+<!--
+Termination messages provide a way for containers to write information about 
+fatal events to a location where it can be easily retrieved and surfaced by 
+tools like dashboards and monitoring software. In most cases, information that 
+you put in a termination message should also be written to the general 
+[Kubernetes logs](/docs/concepts/cluster-administration/logging/).
+-->
+
+终止消息为容器提供了一种方法，可以将有关致命事件的信息写入某个位置，在该位置可以通过仪表板和监控软件等工具轻松检索和显示致命事件。
+在大多数情况下，您放入终止消息中的信息也应该写入[常规 Kubernetes 日志](/docs/concepts/cluster-administration/logging/)。
+
+
+
+{{% /capture %}}
+
+
+{{% capture prerequisites %}}
+
+{{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
+
+{{% /capture %}}
+
+
+{{% capture steps %}}
+
+<!--
+## Writing and reading a termination message
+
+In this exercise, you create a Pod that runs one container.
+The configuration file specifies a command that runs when
+the container starts.
+-->
+
+## 读写终止消息
+
+在本练习中，您将创建运行一个容器的 Pod。
+配置文件指定在容器启动时要运行的命令。
+
+{{< codenew file="debug/termination.yaml" >}}
+
+1. <!--Create a Pod based on the YAML configuration file:-->基于 YAML 配置文件创建 Pod：
+
+        kubectl create -f https://k8s.io/examples/debug/termination.yaml
+
+    <!--In the YAML file, in the `cmd` and `args` fields, you can see that the
+    container sleeps for 10 seconds and then writes "Sleep expired" to
+    the `/dev/termination-log` file. After the container writes
+    the "Sleep expired" message, it terminates.-->
+    YAML 文件中，在 `cmd` 和 `args` 字段，你可以看到容器休眠 10 秒然后将 "Sleep expired" 写入 `/dev/termination-log` 文件。
+    容器写完 "Sleep expired" 消息后，它就终止了。
+
+1. <!--Display information about the Pod:-->显示 Pod 的信息：
+
+        kubectl get pod termination-demo
+
+    <!--Repeat the preceding command until the Pod is no longer running.-->
+    重复前面的命令直到 Pod 不再运行。
+
+1. <!--Display detailed information about the Pod:-->显示 Pod 的详细信息：
+
+        kubectl get pod --output=yaml
+
+    <!--The output includes the "Sleep expired" message:-->输出结果包含 "Sleep expired" 消息：
+
+        apiVersion: v1
+        kind: Pod
+        ...
+            lastState:
+              terminated:
+                containerID: ...
+                exitCode: 0
+                finishedAt: ...
+                message: |
+                  Sleep expired
+                ...
+
+1. <!--Use a Go template to filter the output so that it includes only the termination message:-->使用 Go 模板过滤输出结果，使其只含有终止消息：
+
+        kubectl get pod termination-demo -o go-template="{{range .status.containerStatuses}}{{.lastState.terminated.message}}{{end}}"
+
+<!--
+## Customizing the termination message
+-->
+
+## 定制终止消息
+
+<!--
+Kubernetes retrieves termination messages from the termination message file
+specified in the `terminationMessagePath` field of a Container, which as a default
+value of `/dev/termination-log`. By customizing this field, you can tell Kubernetes
+to use a different file. Kubernetes use the contents from the specified file to
+populate the Container's status message on both success and failure.
+-->
+
+Kubernetes 从容器的 `terminationMessagePath` 字段中指定的终止消息文件中检索终止消息，默认值为 `/dev/termination-log`。
+通过定制这个字段，您可以告诉 Kubernetes 使用不同的文件。
+Kubernetes 使用指定文件中的内容在成功和失败时填充容器的状态消息。
+
+<!--
+In the following example, the container writes termination messages to
+`/tmp/my-log` for Kubernetes to retrieve:
+-->
+
+在下例中，容器将终止消息写入 `/tmp/my-log` 给 Kubernetes 来接收：
+
+```yaml
+apiVersion: v1
+kind: Pod
+metadata:
+  name: msg-path-demo
+spec:
+  containers:
+  - name: msg-path-demo-container
+    image: debian
+    terminationMessagePath: "/tmp/my-log"
+```
+
+<!--
+Moreover, users can set the `terminationMessagePolicy` field of a Container for
+further customization. This field defaults to "`File`" which means the termination
+messages are retrieved only from the termination message file. By setting the
+`terminationMessagePolicy` to "`FallbackToLogsOnError`", you can tell Kubernetes
+to use the last chunk of container log output if the termination message file
+is empty and the container exited with an error. The log output is limited to
+2048 bytes or 80 lines, whichever is smaller.
+-->
+
+此外，用户可以设置容器的 `terminationMessagePolicy` 字段，以便进一步自定义。
+此字段默认为 "`File`"，这意味着仅从终止消息文件中检索终止消息。
+通过将 `terminationMessagePolicy` 设置为 "`FallbackToLogsOnError`"，你就可以告诉 Kubernetes，在容器因错误退出时，如果终止消息文件为空，则使用容器日志输出的最后一块作为终止消息。
+日志输出限制为 2048 字节或 80 行，以较小者为准。
+
+{{% /capture %}}
+
+{{% capture whatsnext %}}
+
+<!--
+* See the `terminationMessagePath` field in
+  [Container](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#container-v1-core).
+* Learn about [retrieving logs](/docs/concepts/cluster-administration/logging/).
+* Learn about [Go templates](https://golang.org/pkg/text/template/).
+-->
+
+* 参考[容器](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#container-v1-core)的 `terminationMessagePath` 字段。
+* 了解[接收日志](/docs/concepts/cluster-administration/logging/)。
+* 了解 [Go 模版](https://golang.org/pkg/text/template/)。
+
+{{% /capture %}}
+
+
+