Create zh-trans:resource-metrics-pipeline.md (#16076)

* Create zh-trans:resource-metrics-pipeline.md * Update zh-trans:resource-metrics-pipeline.md
2019-09-01 19:57:42 +08:00
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+---
+reviewers:
+- fgrzadkowski
+- piosz
+title: 资源指标管道
+content_template: templates/concept
+---
+<!--
+---
+reviewers:
+- fgrzadkowski
+- piosz
+title: Resource metrics pipeline
+content_template: templates/concept
+---
+-->
+
+{{% capture overview %}}
+
+<!--
+Starting from Kubernetes 1.8, resource usage metrics, such as container CPU and memory usage,
+are available in Kubernetes through the Metrics API. These metrics can be either accessed directly
+by user, for example by using `kubectl top` command, or used by a controller in the cluster, e.g.
+Horizontal Pod Autoscaler, to make decisions.
+-->
+从 Kubernetes 1.8开始，资源使用指标，例如容器 CPU 和内存使用率，可通过 Metrics API 在 Kubernetes 中获得。这些指标可以直接被用户访问，比如使用`kubectl top`命令行，或者这些指标由集群中的控制器使用，例如，Horizontal Pod Autoscaler，使用这些指标来做决策。
+
+{{% /capture %}}
+
+
+{{% capture body %}}
+
+<!--
+## The Metrics API
+-->
+## Metrics API
+
+<!--
+Through the Metrics API you can get the amount of resource currently used
+by a given node or a given pod. This API doesn't store the metric values,
+so it's not possible for example to get the amount of resources used by a
+given node 10 minutes ago.
+-->
+通过 Metrics API，您可以获得指定节点或 pod 当前使用的资源量。此 API 不存储指标值，因此想要获取某个指定节点10分钟前的资源使用量是不可能的。
+
+<!--
+The API is no different from any other API:
+-->
+此 API 与其他 API 没有区别：
+
+<!--
+- it is discoverable through the same endpoint as the other Kubernetes APIs under `/apis/metrics.k8s.io/` path
+- it offers the same security, scalability and reliability guarantees
+-->
+- 此 API 和其它 Kubernetes API 一起位于同一端点（endpoint）之下，是可发现的，路径为`/apis/metrics.k8s.io/` 
+- 它提供相同的安全性、可扩展性和可靠性保证
+
+<!--
+The API is defined in [k8s.io/metrics](https://github.com/kubernetes/metrics/blob/master/pkg/apis/metrics/v1beta1/types.go)
+repository. You can find more information about the API there.
+-->
+Metrics API 在[k8s.io/metrics](https://github.com/kubernetes/metrics/blob/master/pkg/apis/metrics/v1beta1/types.go)
+仓库中定义。您可以在那里找到有关 Metrics API 的更多信息。
+
+<!--
+The API requires metrics server to be deployed in the cluster. Otherwise it will be not available.
+-->
+{{< note >}}
+Metrics API 需要在集群中部署 Metrics Server。否则它将不可用。
+{{< /note >}}
+
+<!--
+## Metrics Server
+-->
+## Metrics Server
+
+<!--
+[Metrics Server](https://github.com/kubernetes-incubator/metrics-server) is a cluster-wide aggregator of resource usage data.
+Starting from Kubernetes 1.8 it's deployed by default in clusters created by `kube-up.sh` script
+as a Deployment object. If you use a different Kubernetes setup mechanism you can deploy it using the provided
+[deployment yamls](https://github.com/kubernetes-incubator/metrics-server/tree/master/deploy).
+It's supported in Kubernetes 1.7+ (see details below).
+-->
+[Metrics Server](https://github.com/kubernetes-incubator/metrics-server)是集群范围资源使用数据的聚合器。
+从 Kubernetes 1.8开始，它作为 Deployment 对象，被默认部署在由`kube-up.sh`脚本创建的集群中。
+如果您使用不同的 Kubernetes 安装方法，则可以使用提供的[deployment yamls](https://github.com/kubernetes-incubator/metrics-server/tree/master/deploy)来部署。它在 Kubernetes 1.7+中得到支持（详见下文）。
+
+<!--
+Metric server collects metrics from the Summary API, exposed by [Kubelet](/docs/admin/kubelet/) on each node.
+-->
+Metric server 从每个节点上的 [Kubelet](/docs/admin/kubelet/) 公开的 Summary API 中采集指标信息。
+
+<!--
+Metrics Server registered in the main API server through
+[Kubernetes aggregator](/docs/concepts/api-extension/apiserver-aggregation/),
+which was introduced in Kubernetes 1.7.
+-->
+通过在主 API server 中注册的 Metrics Server [Kubernetes 聚合器](/docs/concepts/api-extension/apiserver-aggregation/) 来采集指标信息， 这是在 Kubernetes 1.7 中引入的。
+
+<!--
+Learn more about the metrics server in [the design doc](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/instrumentation/metrics-server.md).
+-->
+在[设计文档](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/instrumentation/metrics-server.md)中可以了解到有关 Metrics Server 的更多信息。
+
+{{% /capture %}}