[zh] sync upgrading-linux-nodes.md

Author: windsonsea

content/en/docs/tasks/administer-cluster/kubeadm/upgrading-linux-nodes.md

@@ -9,7 +9,7 @@ weight: 100
 This page explains how to upgrade a Linux Worker Nodes created with kubeadm.
 
 ## {{% heading "prerequisites" %}}
- 
+
 {{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
 * Familiarize yourself with [the process for upgrading the rest of your kubeadm
 cluster](/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade). You will want to
@@ -21,80 +21,79 @@ upgrade the control plane nodes before upgrading your Linux Worker nodes.
 
 ### Upgrade kubeadm
 
- Upgrade kubeadm:
-
-  {{< tabs name="k8s_install_kubeadm_worker_nodes" >}}
-  {{% tab name="Ubuntu, Debian or HypriotOS" %}}
-  ```shell
-  # replace x in {{< skew currentVersion >}}.x-00 with the latest patch version
-  apt-mark unhold kubeadm && \
-  apt-get update && apt-get install -y kubeadm={{< skew currentVersion >}}.x-00 && \
-  apt-mark hold kubeadm
-  ```
-  {{% /tab %}}
-  {{% tab name="CentOS, RHEL or Fedora" %}}
-  ```shell
-  # replace x in {{< skew currentVersion >}}.x-0 with the latest patch version
-  yum install -y kubeadm-{{< skew currentVersion >}}.x-0 --disableexcludes=kubernetes
-  ```
-  {{% /tab %}}
-  {{< /tabs >}}
+Upgrade kubeadm:
+
+{{< tabs name="k8s_install_kubeadm_worker_nodes" >}}
+{{% tab name="Ubuntu, Debian or HypriotOS" %}}
+```shell
+# replace x in {{< skew currentVersion >}}.x-00 with the latest patch version
+apt-mark unhold kubeadm && \
+apt-get update && apt-get install -y kubeadm={{< skew currentVersion >}}.x-00 && \
+apt-mark hold kubeadm
+```
+{{% /tab %}}
+{{% tab name="CentOS, RHEL or Fedora" %}}
+```shell
+# replace x in {{< skew currentVersion >}}.x-0 with the latest patch version
+yum install -y kubeadm-{{< skew currentVersion >}}.x-0 --disableexcludes=kubernetes
+```
+{{% /tab %}}
+{{< /tabs >}}
 
 ### Call "kubeadm upgrade"
 
-- For worker nodes this upgrades the local kubelet configuration:
+For worker nodes this upgrades the local kubelet configuration:
 
-  ```shell
-  sudo kubeadm upgrade node
-  ```
+```shell
+sudo kubeadm upgrade node
+```
 
 ### Drain the node
 
-- Prepare the node for maintenance by marking it unschedulable and evicting the workloads:
+Prepare the node for maintenance by marking it unschedulable and evicting the workloads:
 
-  ```shell
-  # replace <node-to-drain> with the name of your node you are draining
-  kubectl drain <node-to-drain> --ignore-daemonsets
-  ```
+```shell
+# replace <node-to-drain> with the name of your node you are draining
+kubectl drain <node-to-drain> --ignore-daemonsets
+```
 
 ### Upgrade kubelet and kubectl
 
-- Upgrade the kubelet and kubectl:
-
-  {{< tabs name="k8s_kubelet_and_kubectl" >}}
-  {{% tab name="Ubuntu, Debian or HypriotOS" %}}
-  ```shell
-  # replace x in {{< skew currentVersion >}}.x-00 with the latest patch version
-  apt-mark unhold kubelet kubectl && \
-  apt-get update && apt-get install -y kubelet={{< skew currentVersion >}}.x-00 kubectl={{< skew currentVersion >}}.x-00 && \
-  apt-mark hold kubelet kubectl
-  ```
-  {{% /tab %}}
-  {{% tab name="CentOS, RHEL or Fedora" %}}
-  ```shell
-  # replace x in {{< skew currentVersion >}}.x-0 with the latest patch version
-  yum install -y kubelet-{{< skew currentVersion >}}.x-0 kubectl-{{< skew currentVersion >}}.x-0 --disableexcludes=kubernetes
-  ```
-  {{% /tab %}}
-  {{< /tabs >}}
-  <br />
-
-- Restart the kubelet:
-
-  ```shell
-  sudo systemctl daemon-reload
-  sudo systemctl restart kubelet
-  ```
+1. Upgrade the kubelet and kubectl:
+
+   {{< tabs name="k8s_kubelet_and_kubectl" >}}
+   {{% tab name="Ubuntu, Debian or HypriotOS" %}}
+   ```shell
+   # replace x in {{< skew currentVersion >}}.x-00 with the latest patch version
+   apt-mark unhold kubelet kubectl && \
+   apt-get update && apt-get install -y kubelet={{< skew currentVersion >}}.x-00 kubectl={{< skew currentVersion >}}.x-00 && \
+   apt-mark hold kubelet kubectl
+   ```
+   {{% /tab %}}
+   {{% tab name="CentOS, RHEL or Fedora" %}}
+   ```shell
+   # replace x in {{< skew currentVersion >}}.x-0 with the latest patch version
+   yum install -y kubelet-{{< skew currentVersion >}}.x-0 kubectl-{{< skew currentVersion >}}.x-0 --disableexcludes=kubernetes
+   ```
+   {{% /tab %}}
+   {{< /tabs >}}
+
+1. Restart the kubelet:
+
+   ```shell
+   sudo systemctl daemon-reload
+   sudo systemctl restart kubelet
+   ```
 
 ### Uncordon the node
 
-- Bring the node back online by marking it schedulable:
+Bring the node back online by marking it schedulable:
 
-  ```shell
-  # replace <node-to-uncordon> with the name of your node
-  kubectl uncordon <node-to-uncordon>
-  ```
+```shell
+# replace <node-to-uncordon> with the name of your node
+kubectl uncordon <node-to-uncordon>
+```
 
- ## {{% heading "whatsnext" %}}
+## {{% heading "whatsnext" %}}
 
 * See how to [Upgrade Windows nodes](/docs/tasks/administer-cluster/kubeadm/upgrading-windows-nodes/).