安装方式：
All-in-One 3.1（./kk create cluster –with-kubernetes v1.20.4 –with-kubesphere v3.1.0）
KubeEdge配置方式：
【自定义资源CRD】【ClusterConfiguration】【ks-installer】配置文件中，设置KubeEdge.enable=true，及advertiseAddress为master节点外网IP。
集群服务器
阿里云4C8G，Ubuntu20.04
边缘节点
阿里云2C2G, Ubuntu20.04

按KubeSphere3.1及KubeEdge官网添加边缘节点后，在Master节点部署了httpd，边缘节点A部署了nginx，边缘节点B部署了caddy。

在边缘节点A上测试发现连续访问这些地址非常不稳定（在边缘节点B上也一样）：http://nginx-svc.default.svc.cluster.local:12345，http://caddy-svc.default.svc.cluster.local:12346，即一下访问正常，一下访问不通，一下访问Nginx的页面却访问到了Caddy的页面。

访问Nginx页面正常情况：

访问Nginx页面却访问到了Caddy：

访问Nginx页面失败情况一：

访问Nginx页面失败情况二：

访问Caddy页面正常情况：

访问Caddy页面却访问到了Nginx：

访问Caddy页面失败情况一：

访问Caddy页面失败情况二：

在边缘节点A上测试访问（在边缘节点B上也一样）http://httpd-svc.default.svc.cluster.local:12347，一般都正常，但耗时较久。

附服务配置文件：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      hostNetwork: true
      containers:
        - name: nginx
          image: nginx
          ports:
            - containerPort: 80
              hostPort: 80
      nodeSelector:
        node-role.kubernetes.io/edge: ""
      tolerations:
        - key: node-role.kubernetes.io/edge
          operator: Exists
          effect: NoSchedule
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: kubernetes.io/arch
                    operator: In
                    values:
                      - amd64

---

apiVersion: v1
kind: Service
metadata:
  name: nginx-svc
  namespace: default
spec:
  clusterIP: None
  selector:
    app: nginx
  ports:
    - name: http-0
      port: 12345
      protocol: TCP
      targetPort: 80

apiVersion: apps/v1
kind: Deployment
metadata:
  name: caddy-deployment
  labels:
    app: caddy
spec:
  replicas: 1
  selector:
    matchLabels:
      app: caddy
  template:
    metadata:
      labels:
        app: caddy
    spec:
      hostNetwork: true
      containers:
        - name: caddy
          image: caddy:2.3.0-alpine
          ports:
            - containerPort: 80
              hostPort: 80
      nodeSelector:
        node-role.kubernetes.io/edge: ""
      tolerations:
        - key: node-role.kubernetes.io/edge
          operator: Exists
          effect: NoSchedule
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: kubernetes.io/arch
                    operator: In
                    values:
                      - amd64

---

apiVersion: v1
kind: Service
metadata:
  name: caddy-svc
  namespace: default
spec:
  clusterIP: None
  selector:
    app: caddy
  ports:
    - name: http-0
      port: 12346
      protocol: TCP
      targetPort: 80

apiVersion: apps/v1
kind: Deployment
metadata:
  name: httpd-deployment
  labels:
    app: httpd
spec:
  replicas: 1
  selector:
    matchLabels:
      app: httpd
  template:
    metadata:
      labels:
        app: httpd
    spec:
      containers:
        - name: httpd
          image: httpd:2.4-alpine
          ports:
            - containerPort: 80
              hostPort: 8030
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: kubernetes.io/arch
                    operator: In
                    values:
                      - amd64

---

apiVersion: v1
kind: Service
metadata:
  name: httpd-svc
  namespace: default
spec:
  clusterIP: None
  selector:
    app: httpd
  ports:
    - name: http-0
      port: 12347
      protocol: TCP
      targetPort: 80