如何让NodeMCU访问Kind集群中部署的Flask API？

我用Kubernetes Kind集群部署Flask API，本地用flask run运行时，应用绑定本机IP 192.168.100.19，同网段的NodeMCU（IP 192.168.100.36）能正常访问。

但部署到Kind集群后，Kind节点处于192.168.64.1网段，我用MetalLB创建该网段的IP池，给Flask API分配了负载均衡IP 192.168.63.200，此时NodeMCU无法和这个IP通信。

我尝试过以下两种方案，但都没解决问题：

方案1：通过ExtraPortMappings绑定容器端口到本机IP #

kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
name: iot-cluster05
nodes:
- role: control-plane
  kubeadmConfigPatches:
  - |
    kind: InitConfiguration
    nodeRegistration:
      kubeletExtraArgs:
        node-labels: "ingress-ready=true"    
  extraPortMappings:
  - containerPort: 80
    hostPort: 80
    protocol: TCP
  - containerPort: 443
    hostPort: 443
    protocol: TCP
  - containerPort: 5000
    hostPort: 5000
    protocol: TCP
    listenAddress: "192.168.100.19"

方案2：硬编码本机IP为node-ip #

kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
name: iot-cluster01
nodes:
- role: control-plane
  extraPortMappings:
  - containerPort: 30000
    hostPort: 80
    protocol: TCP
  kubeadmConfigPatches:
  - |
    kind: InitConfiguration
    nodeRegistration:
      kubeletExtraArgs:
        node-ip: "192.168.100.19"
        cluster-dns: "192.168.100.1"
  - |
    kind: ClusterConfiguration
    apiServer:
      extraArgs:
        advertise-address: "192.168.100.19"
        bind-address: "0.0.0.0"
    controllerManager:
      extraArgs:
        bind-address: "0.0.0.0"
        node-cidr-mask-size: "24"
        allocate-node-cidrs: "true"
        cluster-cidr: "10.244.0.0/16"
containerdConfigPatches:
- | 
  [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options]
    SystemdCgroup = true

环境版本信息 #

• MetalLB版本：0.13.7
• Kind版本：v0.18.0
• Docker版本：v23.0.1

内容的提问来源于stack exchange，提问作者sam hassan