Merge pull request #44514 from asa3311/sync-zh-91

[zh] sync feature-gates/u*.md

Author: k8s-ci-robot

content/zh-cn/docs/reference/command-line-tools-reference/feature-gates/unauthenticated-http2-dos-mitigation.md

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+---
+title: UnauthenticatedHTTP2DOSMitigation
+content_type: feature_gate
+_build:
+  list: never
+  render: false
+ 
+stages:
+  - stage: beta
+    defaultValue: false
+    fromVersion: "1.28"
+    toVersion: "1.28"
+  - stage: beta
+    defaultValue: true
+    fromVersion: "1.29" 
+---
+
+<!--
+Enables HTTP/2 Denial of Service (DoS) mitigations for unauthenticated clients.
+Kubernetes v1.28.0 through v1.28.2 do not include this feature gate.
+-->
+启用了针对未认证客户端的 HTTP/2 拒绝服务（DoS）防护措施。
+Kubernetes v1.28.0 至 v1.28.2 版本并未包括这项特性门控。

content/zh-cn/docs/reference/command-line-tools-reference/feature-gates/unknown-version-interoperability-proxy.md

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+---
+title: UnknownVersionInteroperabilityProxy
+content_type: feature_gate
+_build:
+  list: never
+  render: false
+
+stages:
+  - stage: alpha 
+    defaultValue: false
+    fromVersion: "1.28"
+---
+
+<!--
+Proxy resource requests to the correct peer kube-apiserver when
+multiple kube-apiservers exist at varied versions.
+See [Mixed version proxy](/docs/concepts/architecture/mixed-version-proxy/) for more information.
+-->
+当存在多个不同版本的 kube-apiserver 时，将资源请求代理到正确的对等 kube-apiserver。
+更多信息请参见[混合版本代理](/zh-cn/docs/concepts/architecture/mixed-version-proxy/) 。

content/zh-cn/docs/reference/command-line-tools-reference/feature-gates/user-namespaces-pod-security-standards.md

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+---
+title: UserNamespacesPodSecurityStandards
+content_type: feature_gate
+_build:
+  list: never
+  render: false
+
+stages:
+  - stage: alpha 
+    defaultValue: false
+    fromVersion: "1.29"
+---
+
+<!--
+Enable Pod Security Standards policies relaxation for pods
+that run with namespaces. You must set the value of this feature gate consistently across all nodes in
+your cluster, and you must also enable `UserNamespacesSupport` to use this feature.
+-->
+启用 Pod 安全标准策略的放宽措施，适用于在命名空间中运行的 Pod。
+你需要在集群的所有节点上统一设置此特性门控，并且必须启用 `UserNamespacesSupport` 才能使用此功能。

content/zh-cn/docs/reference/command-line-tools-reference/feature-gates/user-namespaces-stateless-pods-support.md

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+---
+title: UserNamespacesStatelessPodsSupport
+content_type: feature_gate
+_build:
+  list: never
+  render: false
+
+stages:
+  - stage: alpha 
+    defaultValue: false
+    fromVersion: "1.25"
+    toVersion: "1.27"
+
+removed: true
+---
+
+<!--
+Enable user namespace support for stateless Pods. This feature gate was superseded
+by the `UserNamespacesSupport` feature gate in the Kubernetes v1.28 release.
+-->
+为无状态 Pod 启用用户命名空间支持。此特性在 Kubernetes v1.28 版本中被 `UserNamespacesSupport` 特性取代。

content/zh-cn/docs/reference/command-line-tools-reference/feature-gates/user-namespaces-support.md

@@ -0,0 +1,17 @@
+---
+title: UserNamespacesSupport
+content_type: feature_gate
+_build:
+  list: never
+  render: false
+
+stages:
+  - stage: alpha 
+    defaultValue: false
+    fromVersion: "1.28"
+---
+
+<!--
+Enable user namespace support for Pods.
+-->
+为 Pod 启用用户命名空间支持。