diff --git a/.vuepress/components/InstallEnvCheck.vue b/.vuepress/components/InstallEnvCheck.vue
index cb163b3..bd01f1e 100644
--- a/.vuepress/components/InstallEnvCheck.vue
+++ b/.vuepress/components/InstallEnvCheck.vue
@@ -7,7 +7,7 @@
 
     <div>
 
-      <p style="color: red">必须选中下面的 {{envCount}} 个勾选框才能继续</p>
+      <p style="color: red">请认真核对如下选项，{{envCount}} 个都选中后才能显示如何安装。</p>
 
       <div style="overflow: hidden; padding: 20px 0 0 20px; margin-top: 1rem; margin-bottom: 20px; border: 1px solid #d7dae2;">
       <b-form>
@@ -20,6 +20,7 @@
             <b-form-checkbox value="networkcard">我的任意节点只有一块网卡（可以在完成K8S安装后再添加网卡）</b-form-checkbox><br/>
             <b-form-checkbox value="nat">如果我直接使用vmware等创建虚拟机，我使用NAT网络，而不是桥接网络</b-form-checkbox><br/>
             <b-form-checkbox value="docker">我的任意节点不会直接使用 docker run 或 docker-compose 运行容器</b-form-checkbox><br/>
+            <b-form-checkbox value="vpn">我的所有节点都在同一个局域网内</b-form-checkbox><br/>
           </b-form-checkbox-group>
         </b-form-group>
       </b-form>
@@ -42,7 +43,7 @@
 </template>
 
 <script>
-const ENV_COUNT = 7
+const ENV_COUNT = 8
 
 export default {
   props: {
diff --git a/.vuepress/components/ad-list.js b/.vuepress/components/ad-list.js
index 3071988..61e160f 100644
--- a/.vuepress/components/ad-list.js
+++ b/.vuepress/components/ad-list.js
@@ -5,7 +5,7 @@ module.exports = [
     strong: '一键离线安装',
     action: '去看看',
     url: 'http://store.lameleg.com?referrer=shaohq',
-    weight: 5
+    weight: 1
   },
   {
     name: '阳明的博客',
@@ -13,7 +13,7 @@ module.exports = [
     strong: '实战课程',
     action: '去看看',
     url: 'https://www.qikqiak.com/post/promotion-51/',
-    weight: 5
+    weight: 1
   },
   {
     name: '极客时间',
@@ -21,7 +21,7 @@ module.exports = [
     strong: 'DevOps实战笔记',
     action: '去看看',
     url: 'https://time.geekbang.org/column/intro/100036601?code=0Totv3yN%2FohiumTclUF4ky4qRYs9Ecq6ZK4IdgNf88M%3D',
-    weight: 10
+    weight: 1
   },
   {
     name: '腾讯云',
@@ -29,7 +29,7 @@ module.exports = [
     strong: '百款云产品一折起',
     action: '去抢',
     url: 'https://cloud.tencent.com/act/cps/redirect?redirect=1050&cps_key=2ee6baa049659f4713ddc55a51314372&from=console',
-    weight: 40
+    weight: 67
   },
   {
     name: '阿里云',
@@ -37,7 +37,7 @@ module.exports = [
     strong: '低至一折',
     action: '去抢',
     url: 'https://www.aliyun.com/1111/2019/home?userCode=obezo3pg',
-    weight: 40
+    weight: 30
   }
 
   // {
diff --git a/.vuepress/config-sidebar.js b/.vuepress/config-sidebar.js
index 381a64d..3532e2c 100644
--- a/.vuepress/config-sidebar.js
+++ b/.vuepress/config-sidebar.js
@@ -378,6 +378,13 @@ module.exports = {
       title: 'Kubernetes 实战',
       collapsable: true,
       children: [
+        {
+          title: '练习',
+          collapsable: true,
+          children: [
+            'k8s-practice/access/port-forward',
+          ]
+        },
         {
           title: '概述',
           collapsable: false,
diff --git a/.vuepress/public/kuboard.rp b/.vuepress/public/kuboard.rp
index a3e0920..a20e3b2 100644
Binary files a/.vuepress/public/kuboard.rp and b/.vuepress/public/kuboard.rp differ
diff --git a/.vuepress/public/statics/learning/ptc/port-forward/redis-master-deployment.yaml b/.vuepress/public/statics/learning/ptc/port-forward/redis-master-deployment.yaml
new file mode 100644
index 0000000..bc888ab
--- /dev/null
+++ b/.vuepress/public/statics/learning/ptc/port-forward/redis-master-deployment.yaml
@@ -0,0 +1,29 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: redis-master
+  labels:
+    app: redis
+spec:
+  selector:
+    matchLabels:
+      app: redis
+      role: master
+      tier: backend
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: redis
+        role: master
+        tier: backend
+    spec:
+      containers:
+      - name: master
+        image: redis
+        resources:
+          requests:
+            cpu: 100m
+            memory: 100Mi
+        ports:
+        - containerPort: 6379
diff --git a/.vuepress/public/statics/learning/ptc/port-forward/redis-master-service.yaml b/.vuepress/public/statics/learning/ptc/port-forward/redis-master-service.yaml
new file mode 100644
index 0000000..a484014
--- /dev/null
+++ b/.vuepress/public/statics/learning/ptc/port-forward/redis-master-service.yaml
@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: redis-master
+  labels:
+    app: redis
+    role: master
+    tier: backend
+spec:
+  ports:
+  - port: 6379
+    targetPort: 6379
+  selector:
+    app: redis
+    role: master
+    tier: backend
diff --git a/.vuepress/theme/components/JoinCommunity.vue b/.vuepress/theme/components/JoinCommunity.vue
index 6fa8250..6545d58 100644
--- a/.vuepress/theme/components/JoinCommunity.vue
+++ b/.vuepress/theme/components/JoinCommunity.vue
@@ -4,7 +4,7 @@
 
     <div>
       <div class="row" style="margin-top: 1rem;">
-        <div class="col-md-4 col-sm-12">
+        <div class="col-md-6 col-sm-12">
           <b-card style="height: 100%; " shadow="none" :body-style="{padding: '0rem 1.5rem'}"
           data-aos="fade-up" data-aos-duration="800">
             <h4>QQ群</h4>
@@ -18,7 +18,7 @@
             </p>
           </b-card>
         </div>
-        <div class="col-md-4 col-sm-12">
+        <div class="col-md-6 col-sm-12">
           <b-card style="height: 100%; color: #2c3e50; line-height: 1.7; " shadow="none" :body-style="{padding: '0rem 1.5rem'}"
           data-aos="fade-up" data-aos-duration="1000">
             <h4>微信群</h4>
@@ -33,7 +33,7 @@
             </div>
           </b-card>
         </div>
-        <div class="col-md-4 col-sm-12">
+        <!-- <div class="col-md-4 col-sm-12">
           <b-card style="height: 100%; color: #2c3e50; line-height: 1.7; border-color: #f2be45; background-color: rgba(242, 190, 69, 0.1)" shadow="none" :body-style="{padding: '0rem 1.5rem'}"
           data-aos="fade-up" data-aos-duration="1200">
             <h4>VIP群</h4>
@@ -41,13 +41,12 @@
               <div style="margin-top: 10px;">
                 <span>微信扫码</span>
                 <p style="margin-top: 10px; margin-bottom: 0; text-align: center;">
-                  <!-- <img src="/images/dz.png" style="width: 150px;"></img> -->
                   <img src="/images/qr-vip.jpeg" style="width: 150px;"></img>
                 </p>
               </div>
             </div>
           </b-card>
-        </div>
+        </div> -->
       </div>
     </div>
   </div>
diff --git a/install/install-k8s.md b/install/install-k8s.md
index 3da7d4e..0489d8e 100644
--- a/install/install-k8s.md
+++ b/install/install-k8s.md
@@ -25,10 +25,10 @@ meta:
 * 至少2台 **2核4G** 的服务器
 * **Cent OS 7.6**
 
-<grid :rwd="{compact: 'stack'}">
+<!-- <grid :rwd="{compact: 'stack'}">
   <grid-item size="2/3" :rwd="{tablet: '1/1', compact: '1/1'}" style="padding: 1rem 0 1rem 1rem;">
 
-<div>
+<div> -->
 
 [腾讯云11.11爆款1核2G云服务器首购88元，免费领9888元代金券，百款云产品一折起](https://cloud.tencent.com/act/cps/redirect?redirect=1050&cps_key=2ee6baa049659f4713ddc55a51314372&from=console)
 
@@ -38,6 +38,12 @@ meta:
 
 <!-- [阿里云服务器限时2折](https://www.aliyun.com/acts/limit-buy?userCode=obezo3pg) -->
 
+::: danger 警告
+* 因为双十一，许多网友使用腾讯云、阿里云不同的账号各买了一台优惠价格的机器。目前我没有找到方法将不同局域网内的机器通过公网连接组成K8S集群，请谨慎。
+* 建议的做法是：腾讯云（或阿里云）采购一台优惠价格的包年实例作为 Master，同时再采购一台竞价实例（腾讯云）或抢占式实例（阿里云）作为 Worker 节点。竞价实例（抢占式实例）按分钟付费，以阿里云为例，一台2核8G的机器一天下来的费用大概是 1.2 - 1.5元。
+* 再次强调：按照本文档进行安装时，所有节点必须在同一个局域网内
+:::
+
 **安装后的软件版本为**
 
 * Kubernetes v1.16.2
@@ -53,13 +59,13 @@ meta:
 > * [安装 Kubernetes v1.15.2 单Master节点](/install/history-k8s/install-k8s-1.15.2.html)
 > * [安装 Kubernetes v1.15.1 单Master节点](/install/history-k8s/install-k8s-1.15.1.html)
 
-</div>
+<!-- </div>
 
   </grid-item>
   <grid-item size="1/3" :rwd="{tablet: '1/1', compact: '0/1'}" style="padding: 2rem 1rem 1rem 1rem;">
     <AdSenseVertical/>
   </grid-item>
-</grid>
+</grid> -->
 
 安装后的拓扑图如下：<span v-on:click="$sendGaEvent('下载拓扑图-kubernetes', '下载拓扑图-kubernetes', 'Download-install-kubernetes.html')"><a :href="$withBase('/kuboard.rp')" download="www.kuboard.cn.rp">下载拓扑图源文件</a></span> <font color="#999">使用Axure RP 9.0可打开该文件</font>
 
diff --git a/learning/k8s-practice/access/port-forward.md b/learning/k8s-practice/access/port-forward.md
new file mode 100644
index 0000000..e7c861b
--- /dev/null
+++ b/learning/k8s-practice/access/port-forward.md
@@ -0,0 +1,137 @@
+---
+vssueId: 156
+layout: LearningLayout
+lessAds: true
+description: Kubernetes教程_本文描述了如何使用kubectl_port-forward访问Kubernetes集群中的RedisServer_这种连接方式在实际进行Debug时非常有效
+meta:
+  - name: keywords
+    content: Kubernetes教程,K8S教程,kubectl port-forward, K8S培训
+---
+
+# 使用port-forward访问集群中的应用程序
+
+<AdSenseTitle>
+
+本文描述了如何使用 `kubectl port-forward` 访问 Kubernetes 集群中的 Redis Server。这种连接方式在实际进行Debug时非常有效。
+
+[[TOC]]
+
+</AdSenseTitle>
+
+## 为Redis创建Deployment和Service
+
+* 创建 Redis Deployment，YAML文件如下：
+
+  <<< @/.vuepress/public/statics/learning/ptc/port-forward/redis-master-deployment.yaml
+
+  执行命令，以创建 Redis Deployment
+
+  ``` sh
+  kubectl apply -f https://kuboard.cn/statics/learning/ptc/port-forward/redis-master-deployment.yaml
+  ```
+
+  执行命令，查看Pod状态：
+
+  ``` sh
+  kubectl get pods
+  ```
+
+  输出结果如下：
+
+  ```
+  NAME                            READY     STATUS    RESTARTS   AGE
+  redis-master-765d459796-258hz   1/1       Running   0          50s
+  ```
+
+  执行命令，查看 Deployment状态：
+
+  ``` sh
+  kubectl get deployment
+  ```
+
+  输出结果如下
+  ```
+  NAME         READY   UP-TO-DATE   AVAILABLE   AGE
+  redis-master 1/1     1            1           55s
+  ```
+
+  执行命令，查看ReplicaSet状态
+  ``` sh
+  kubectl get rs
+  ```
+
+  输出结果如下：
+  ```
+  NAME                      DESIRED   CURRENT   READY     AGE
+  redis-master-765d459796   1         1         1         1m
+  ```
+
+* 创建Redis服务，YAML文件如下所示：
+
+  <<< @/.vuepress/public/statics/learning/ptc/port-forward/redis-master-service.yaml
+
+  执行命令，创建Service
+  ``` sh
+  kubectl apply -f https://kuboard.cn/statics/learning/ptc/port-forward/redis-master-service.yaml
+  ```
+
+  执行命令，检查Service创建结果
+  ``` sh
+  kubectl get svc | grep redis
+  ```
+
+  输出结果如下所示：
+  ```
+  NAME           TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)    AGE
+  redis-master   ClusterIP   10.100.0.213   <none>        6379/TCP   27s
+  ```
+
+* 验证 Redis Service已经运行，并监听了 6379 端口
+
+  ``` sh
+  kubectl get pods redis-master-765d459796-258hz --template='{{(index (index .spec.containers 0).ports 0).containerPort}}{{"\n"}}'
+  ```
+  > 请将 `redis-master-765d459796-258hz` 替换成你实际 redis 的名字
+  输出结果如下所示：
+  ```
+  6379
+  ```
+
+## 转发本地端口到Pod的端口
+
+* 使用 `kubectl port-forward` 命令，用户可以使用资源的名称来进行端口转发。下面的命令中的任意一行，都可以实现端口转发的效果：
+
+  ``` sh
+  # 这几个命令执行任意一个即可
+  kubectl port-forward redis-master-765d459796-258hz 7000:6379
+  kubectl port-forward pods/redis-master-765d459796-258hz 7000:6379
+  kubectl port-forward deployment/redis-master 7000:6379
+  kubectl port-forward rs/redis-master 7000:6379
+  kubectl port-forward svc/redis-master 7000:6379
+  ```
+
+  以上命令的输出结果类似：
+  ```
+  I0710 14:43:38.274550    3655 portforward.go:225] Forwarding from 127.0.0.1:7000 -> 6379
+  I0710 14:43:38.274797    3655 portforward.go:225] Forwarding from [::1]:7000 -> 6379
+  ```
+
+* 启动 Redis 命令行：
+  ``` sh
+  redis-cli -p 7000
+  ```
+
+* 在Redis命令行工具的提示符下，输入 `ping` 命令，如下所示：
+  ``` sh
+  127.0.0.1:7000>ping
+  ```
+  Redis 服务器将返回 `PONG`
+
+## 总结
+
+本机 7000 端口的连接被转发到集群中 Redis Server 所在 Pod 的 6379 端口。当此连接存在是，您可以使用您自己的机器上的客户端对部署在集群中的 Redis Server 进行 Debug。
+
+::: tip 提示
+* 由于一些限制，port-forward 目前只支持 TCP 协议，[issue 47862](https://github.com/kubernetes/kubernetes/issues/47862) 用来跟进对 UDP 协议的支持。
+* MySQL数据库等使用 TCP 协议的部署在K8S集群中的服务器，都可以使用此方式进行 DEBUG
+:::