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+
+生成提供 kubernetes API 服务的证书
+<!--
+Generates the certificate for serving the kubernetes API
+-->
+
+<!--
+### Synopsis
+-->
+
+### 概要
+
+<!--
+Renews the certificate for serving the kubernetes API, and saves them into apiserver.cert and apiserver.key files. 
+-->
+续期用于 kubernetes API 的证书，并将其保存到 apiserver.cert 和 apiserver.key 文件中。
+
+<!--
+Extra attributes such as SANs will be based on the existing certificates, there is no need to resupply them.
+-->
+额外的属性(如 SAN) 将基于现有的证书，不需要重新提供它们。
+
+```
+kubeadm alpha phase certs renew apiserver [flags]
+```
+
+<!--
+### Options
+-->
+
+### 选项
+
+<table style="width: 100%; table-layout: fixed;">
+  <colgroup>
+    <col span="1" style="width: 10px;" />
+    <col span="1" />
+  </colgroup>
+  <tbody>
+
+    <tr>
+      <td colspan="2">--cert-dir string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;默认值： "/etc/kubernetes/pki"</td>
+    </tr>
+<!--
+      <td colspan="2">--cert-dir string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Default: "/etc/kubernetes/pki"</td>
+-->
+
+    <tr>
+      <td></td><td style="line-height: 130%; word-wrap: break-word;">保存证书的路径</td>
+    </tr>
+<!--
+      <td></td><td style="line-height: 130%; word-wrap: break-word;">The path where to save the certificates</td>
+-->
+
+    <tr>
+      <td colspan="2">--config string</td>
+    </tr>
+    <tr>
+      <td></td><td style="line-height: 130%; word-wrap: break-word;">kubeadm 配置文件的路径（警告：配置文件的使用处于试验阶段）</td>
+    </tr>
+<!--
+      <td></td><td style="line-height: 130%; word-wrap: break-word;">Path to kubeadm config file (WARNING: Usage of a configuration file is experimental)</td>
+-->
+
+    <tr>
+      <td colspan="2">-h, --help</td>
+    </tr>
+    <tr>
+      <td></td><td style="line-height: 130%; word-wrap: break-word;">apiserver 的帮助信息</td>
+    </tr>
+<!--
+      <td></td><td style="line-height: 130%; word-wrap: break-word;">help for apiserver</td>
+-->
+
+    <tr>
+      <td colspan="2">--kubeconfig string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;默认值： "/etc/kubernetes/admin.conf"</td>
+    </tr>
+<!--
+       <td colspan="2">--kubeconfig string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Default: "/etc/kubernetes/admin.conf"</td>
+-->
+    <tr>
+      <td></td><td style="line-height: 130%; word-wrap: break-word;">用于和集群通信的 KubeConfig 文件。如果它没有被设置，那么 kubeadm 将会搜索一个已经存在于标准路径的 KubeConfig 文件。</td>
+    </tr>
+<!--
+     <td></td><td style="line-height: 130%; word-wrap: break-word;">The KubeConfig file to use when talking to the cluster. If the flag is not set, a set of standard locations are searched for an existing KubeConfig file.</td>
+-->
+
+    <tr>
+      <td colspan="2">--use-api</td>
+    </tr>
+    <tr>
+      <td></td><td style="line-height: 130%; word-wrap: break-word;">使用 Kubernetes 证书 API 更新证书</td>
+    </tr>
+<!--
+      <td></td><td style="line-height: 130%; word-wrap: break-word;">Use the Kubernetes certificate API to renew certificates</td>
+-->
+
+  </tbody>
+</table>
+
+
+<!--
+### Options inherited from parent commands
+-->
+
+### 从父命令继承的选项
+
+<table style="width: 100%; table-layout: fixed;">
+  <colgroup>
+    <col span="1" style="width: 10px;" />
+    <col span="1" />
+  </colgroup>
+  <tbody>
+
+    <tr>
+      <td colspan="2">--rootfs string</td>
+    </tr>
+    <tr>
+      <td></td><td style="line-height: 130%; word-wrap: break-word;">[实验] 到'真实'主机根文件系统的路径。</td>
+    </tr>
+<!--
+      <td></td><td style="line-height: 130%; word-wrap: break-word;">[EXPERIMENTAL] The path to the 'real' host root filesystem.</td>
+-->
+
+  </tbody>
+</table>
+
+
+