Merge pull request #41870 from asa3311/sync-zh-23

[zh-cn] sync service-accounts-admin horizontal-pod-autoscale

content/zh-cn/docs/reference/access-authn-authz/service-accounts-admin.md

@@ -409,6 +409,7 @@ That manifest snippet defines a projected volume that combines information from
 1. A `serviceAccountToken` source, that contains a token that the kubelet acquires from kube-apiserver.
    The kubelet fetches time-bound tokens using the TokenRequest API. A token served for a TokenRequest expires
    either when the pod is deleted or after a defined lifespan (by default, that is 1 hour).
+   The kubelet also refreshes that token before the token expires.
    The token is bound to the specific Pod and has the kube-apiserver as its audience.
 1. A `configMap` source. The ConfigMap contains a bundle of certificate authority data. Pods can use these
    certificates to make sure that they are connecting to your cluster's kube-apiserver (and not to middlebox
@@ -420,8 +421,8 @@ That manifest snippet defines a projected volume that combines information from
 
 1. `serviceAccountToken` 数据源，包含 kubelet 从 kube-apiserver 获取的令牌。
    kubelet 使用 TokenRequest API 获取有时间限制的令牌。为 TokenRequest 服务的这个令牌会在
-   Pod 被删除或定义的生命周期（默认为 1 小时）结束之后过期。该令牌绑定到特定的 Pod，
-   并将其 audience（受众）设置为与 `kube-apiserver` 的 audience 相匹配。
+   Pod 被删除或定义的生命周期（默认为 1 小时）结束之后过期。在令牌过期之前，kubelet 还会刷新该令牌。
+   该令牌绑定到特定的 Pod，并将其 audience（受众）设置为与 `kube-apiserver` 的 audience 相匹配。
 1. `configMap` 数据源。ConfigMap 包含一组证书颁发机构数据。
    Pod 可以使用这些证书来确保自己连接到集群的 kube-apiserver（而不是连接到中间件或意外配置错误的对等点上）。
 1. `downwardAPI` 数据源。这个 `downwardAPI` 卷获得包含 Pod 的名字空间的名称，

content/zh-cn/docs/tasks/run-application/horizontal-pod-autoscale.md

@@ -837,13 +837,13 @@ for scaling down which allows a 100% of the currently running replicas to be rem
 means the scaling target can be scaled down to the minimum allowed replicas.
 For scaling up there is no stabilization window. When the metrics indicate that the target should be
 scaled up the target is scaled up immediately. There are 2 policies where 4 pods or a 100% of the currently
-running replicas will be added every 15 seconds till the HPA reaches its steady state.
+running replicas may at most be added every 15 seconds till the HPA reaches its steady state.
 -->
 用于缩小稳定窗口的时间为 **300** 秒（或是 `--horizontal-pod-autoscaler-downscale-stabilization`
 参数设定值）。
 只有一种缩容的策略，允许 100% 删除当前运行的副本，这意味着扩缩目标可以缩小到允许的最小副本数。
 对于扩容，没有稳定窗口。当指标显示目标应该扩容时，目标会立即扩容。
-这里有两种策略，每 15 秒添加 4 个 Pod 或 100% 当前运行的副本数，直到 HPA 达到稳定状态。
+这里有两种策略，每 15 秒最多添加 4 个 Pod 或 100% 当前运行的副本数，直到 HPA 达到稳定状态。
 
 <!--
 ### Example: change downscale stabilization window