[zh] Resync kubeadm files (2)

content/zh/docs/reference/setup-tools/kubeadm/kubeadm-upgrade.md

@@ -3,7 +3,7 @@ title: kubeadm upgrade
 content_type: concept
 weight: 40
 ---
-<!-- ---
+<!--
 reviewers:
 - mikedanese
 - luxas
@@ -11,7 +11,7 @@ reviewers:
 title: kubeadm upgrade
 content_type: concept
 weight: 40
---- -->
+-->
 
 <!-- overview -->
 <!--
@@ -19,30 +19,25 @@ weight: 40
 behind one command, with support for both planning an upgrade and actually performing it. -->
 `kubeadm upgrade` 是一个对用户友好的命令，它将复杂的升级逻辑包装在一个命令后面，支持升级的规划和实际执行。
 
-
 <!-- body -->
 
 <!--
 ## kubeadm upgrade guidance
 -->
-## kubeadm 升级指南
+## kubeadm upgrade 指南
 
 <!--
 The steps for performing a upgrade using kubeadm are outlined in [this document](/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade/).
 For older versions of kubeadm, please refer to older documentation sets of the Kubernetes website.
 -->
-[本文档](/zh/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade/)概述了使用 kubeadm 执行升级的步骤。
-有关 kubeadm 旧版本，请参阅 Kubernetes 网站的旧版文档。
+[本文档](/zh/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade/)概述
+使用 kubeadm 执行升级的步骤。
+与 kubeadm 旧版本相关的文档，请参阅 Kubernetes 网站的旧版文档。
 
 <!--
 You can use `kubeadm upgrade diff` to see the changes that would be applied to static pod manifests.
 -->
-你可以使用 `kubeadm upgrade diff` 来查看将应用于静态 pod 清单的更改。
-
-<!--
-To use kube-dns with upgrades in Kubernetes v1.13.0 and later please follow [this guide](/docs/reference/setup-tools/kubeadm/kubeadm-init-phase/#cmd-phase-addon).
--->
-要在 Kubernetes v1.13.0 及更高版本中使用 kube-dns 进行升级，请遵循[本指南](/zh/docs/reference/setup-tools/kubeadm/kubeadm-init-phase/#cmd-phase-addon)。
+你可以使用 `kubeadm upgrade diff` 来查看将应用于静态 Pod 清单的更改。
 
 <!--
 In Kubernetes v1.15.0 and later, `kubeadm upgrade apply` and `kubeadm upgrade node` will also
@@ -50,8 +45,10 @@ automatically renew the kubeadm managed certificates on this node, including tho
 To opt-out, it is possible to pass the flag `--certificate-renewal=false`. For more details about certificate
 renewal see the [certificate management documentation](/docs/tasks/administer-cluster/kubeadm/kubeadm-certs).
 -->
-在 Kubernetes v1.15.0 和更高版本中，`kubeadm upgrade apply` 和 `kubeadm upgrade node` 也将自动续订该节点上的 kubeadm 托管证书，包括存储在 kubeconfig 文件中的证书。
-要选择退出，可以传递参数 `--certificate-renewal=false`。有关证书续订的更多详细信息请参见[证书管理文档](/zh/docs/tasks/administer-cluster/kubeadm/kubeadm-certs)。
+在 Kubernetes v1.15.0 和更高版本中，`kubeadm upgrade apply` 和 `kubeadm upgrade node`
+也将自动续订该节点上的 kubeadm 托管证书，包括存储在 kubeconfig 文件中的证书。
+要选择退出，可以传递参数 `--certificate-renewal=false`。
+有关证书续订的更多详细信息请参见[证书管理文档](/zh/docs/tasks/administer-cluster/kubeadm/kubeadm-certs)。
 
 
 {{< note >}}
@@ -78,11 +75,12 @@ reports of unexpected results.
 ## kubeadm upgrade node {#cmd-upgrade-node}
 {{< include "generated/kubeadm_upgrade_node.md" >}}
 
-
-
 ## {{% heading "whatsnext" %}}
 
 <!--
-* [kubeadm config](/docs/reference/setup-tools/kubeadm/kubeadm-config/) if you initialized your cluster using kubeadm v1.7.x or lower, to configure your cluster for `kubeadm upgrade` -->
-* 如果你使用 kubeadm v1.7.x 或更低版本初始化集群，则可以参考[kubeadm 配置](/zh/docs/reference/setup-tools/kubeadm/kubeadm-config/)配置集群用于 `kubeadm upgrade`。
+* [kubeadm config](/docs/reference/setup-tools/kubeadm/kubeadm-config/) if you initialized your cluster using kubeadm v1.7.x or lower, to configure your cluster for `kubeadm upgrade`
+-->
+* 如果你使用 kubeadm v1.7.x 或更低版本初始化集群，则可以参考
+  [kubeadm 配置](/zh/docs/reference/setup-tools/kubeadm/kubeadm-config/)
+  配置集群用于 `kubeadm upgrade`。