From 0cdbcad949daa0f0a3f0ff00010ba95e3fdc8ae8 Mon Sep 17 00:00:00 2001
From: SataQiu <1527062125@qq.com>
Date: Mon, 10 Dec 2018 18:20:19 +0800
Subject: [PATCH] zh-trans: add
 docs/concepts/overview/working-with-objects/field-selectors.md (#11565)

* zh-trans: add docs/concepts/overview/working-with-objects/field-selectors.md

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+---
+title: 字段选择器
+weight: 60
+---
+
+<!--
+---
+title: Field Selectors
+weight: 60
+---
+-->
+
+字段选择器允许您根据一个或多个资源字段的值[筛选 Kubernetes 资源](/docs/concepts/overview/working-with-objects/kubernetes-objects)。
+下面是一些使用字段选择器查询的例子：
+<!--
+_Field selectors_ let you [select Kubernetes resources](/docs/concepts/overview/working-with-objects/kubernetes-objects) based on the value of one or more resource fields. Here are some example field selector queries:
+-->
+
+* `metadata.name=my-service`
+* `metadata.namespace!=default`
+* `status.phase=Pending`
+
+下面这个 `kubectl` 命令将筛选出[`status.phase`](/docs/concepts/workloads/pods/pod-lifecycle/#pod-phase)字段值为 `Running` 的所有 Pod：
+<!--
+This `kubectl` command selects all Pods for which the value of the [`status.phase`](/docs/concepts/workloads/pods/pod-lifecycle/#pod-phase) field is `Running`:
+-->
+
+```shell
+$ kubectl get pods --field-selector status.phase=Running
+```
+
+{{< note >}}
+
+字段选择器本质上是资源*过滤器*。默认情况下，字段选择器/过滤器是未被应用的，这意味着指定类型的所有资源都会被筛选出来。
+这使得以下的两个 `kubectl` 查询是等价的：
+<!--
+Field selectors are essentially resource *filters*. By default, no selectors/filters are applied, meaning that all resources of the specified type are selected. This makes the following `kubectl` queries equivalent:
+-->
+
+```shell
+$ kubectl get pods
+$ kubectl get pods --field-selector ""
+```
+{{< /note >}}
+
+## 支持的字段
+<!--
+## Supported fields
+-->
+
+不同的 Kubernetes 资源类型支持不同的字段选择器。
+所有资源类型都支持 `metadata.name` 和 `metadata.namespace` 字段。
+使用不被支持的字段选择器会产生错误，例如：
+<!--
+Supported field selectors vary by Kubernetes resource type. All resource types support the `metadata.name` and `metadata.namespace` fields. Using unsupported field selectors produces an error. For example:
+-->
+
+```shell
+$ kubectl get ingress --field-selector foo.bar=baz
+Error from server (BadRequest): Unable to find "ingresses" that match label selector "", field selector "foo.bar=baz": "foo.bar" is not a known field selector: only "metadata.name", "metadata.namespace"
+```
+
+## 支持的运算符
+<!--
+## Supported operators
+-->
+
+您可以使用 `=`、`==`和 `!=` 对字段选择器进行运算（`=` 和 `==` 的意义是相同的）。
+例如，下面这个 `kubectl` 命令将筛选所有不属于 `default` 名称空间的 Kubernetes Service：
+<!--
+You can use the `=`, `==`, and `!=` operators with field selectors (`=` and `==` mean the same thing). This `kubectl` command, for example, selects all Kubernetes Services that aren't in the `default` namespace:
+-->
+
+```shell
+$ kubectl get services --field-selector metadata.namespace!=default
+```
+
+## 链式选择器
+<!--
+## Chained selectors
+-->
+
+同[标签](/docs/concepts/overview/working-with-objects/labels)和其他选择器一样，字段选择器可以通过使用逗号分隔的列表组成一个选择链。
+下面这个 `kubectl` 命令将筛选 `status.phase` 字段不等于 `Running` 同时 `spec.restartPolicy` 字段等于 `Always` 的所有 Pod：
+<!--
+As with [label](/docs/concepts/overview/working-with-objects/labels) and other selectors, field selectors can be chained together as a comma-separated list. This `kubectl` command selects all Pods for which the `status.phase` does not equal `Running` and the `spec.restartPolicy` field equals `Always`:
+-->
+
+```shell
+$ kubectl get pods --field-selector=status.phase!=Running,spec.restartPolicy=Always
+```
+
+## 多种资源类型
+<!--
+## Multiple resource types
+-->
+
+您能够跨多种资源类型来使用字段选择器。
+下面这个 `kubectl` 命令将筛选出所有不在 `default` 命名空间中的 StatefulSet 和 Service：
+<!--
+You use field selectors across multiple resource types. This `kubectl` command selects all Statefulsets and Services that are not in the `default` namespace:
+-->
+
+```shell
+$ kubectl get statefulsets,services --field-selector metadata.namespace!=default
+```