Try to setup multiple kind clusters with also an external interface

clusterrole.yaml

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: node-ip-reporter-role
rules:
- apiGroups: [""]
  resources: ["nodes"]
  verbs: ["get", "list", "watch", "patch", "update"]
- apiGroups: [""]
  resources: ["nodes/status"]
  verbs: ["patch", "update", "get"]

clusterrolebinding.yaml

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: node-ip-reporter-binding
subjects:
- kind: ServiceAccount
  name: node-ip-reporter
  namespace: default
roleRef:
  kind: ClusterRole
  name: node-ip-reporter-role
  apiGroup: rbac.authorization.k8s.io

deamonset.yaml

apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: node-ip-reporter
  namespace: default
spec:
  selector:
    matchLabels:
      name: node-ip-reporter
  template:
    metadata:
      labels:
        name: node-ip-reporter
    spec:
      tolerations:
        - key: node-role.kubernetes.io/control-plane
          effect: NoSchedule
        - key: node.cloudprovider.kubernetes.io/uninitialized
          value: "true"
      hostNetwork: true
      serviceAccountName: node-ip-reporter
      initContainers:
      - name: get-node-ips
        image: busybox
        command: ["sh", "-c"]
        args:
        - |
          # Extract internal IP (assuming it's in the 172.18.0.x range)
          INTERNAL_IP=$(ip addr | grep '172.18.0' | awk '{print $2}' | cut -d'/' -f1 | head -n 1)
          # Extract external IP (assuming it's in the 192.168.x.x range)
          EXTERNAL_IP=$(ip addr | grep '192.168' | awk '{print $2}' | cut -d'/' -f1 | head -n 1)

          # Write the IPs to the shared volume
          echo $INTERNAL_IP > /node-ips/internal-ip
          echo $EXTERNAL_IP > /node-ips/external-ip
        volumeMounts:
        - name: node-ips
          mountPath: /node-ips
      containers:
      - name: report-node-ips
        image: bitnami/kubectl:latest
        #command: ["/bin/sh", "-c"]
        command: ["sh", "-c"]
        args:
        - |
          INTERNAL_IP=$(cat /node-ips/internal-ip)
          EXTERNAL_IP=$(cat /node-ips/external-ip)

          echo "$NODE_NAME"
          echo "INTERNAL_IP: $INTERNAL_IP"
          echo "EXTERNAL_IP: $EXTERNAL_IP"

          # Patch the node status with the internal and external IPs
          kubectl patch node $NODE_NAME --subresource status --type='json' -p '[{"op":"add","path":"/status/addresses/-", "value": {"type": "InternalIP", "address": "'"$INTERNAL_IP"'"} }]'
          kubectl patch node $NODE_NAME --subresource status --type='json' -p '[{"op":"add","path":"/status/addresses/-", "value": {"type": "ExternalIP", "address": "'"$EXTERNAL_IP"'"} }]'

          # unTaint the node
          kubectl taint node $NODE_NAME node.cloudprovider.kubernetes.io/uninitialized-

          # Keep the container running
          sleep infinity
        env:
        - name: NODE_NAME
          valueFrom:
            fieldRef:
              fieldPath: spec.nodeName
        volumeMounts:
        - name: node-ips
          mountPath: /node-ips
      volumes:
      - name: node-ips
        emptyDir: {}

k01-config.yaml

apiVersion: kind.x-k8s.io/v1alpha4
kind: Cluster
nodes:
  - role: control-plane
    kubeadmConfigPatches:
    - |
      kind: InitConfiguration
      nodeRegistration:
        kubeletExtraArgs:
          cloud-provider: external
    - |
      kind: JoinConfiguration
      nodeRegistration:
        kubeletExtraArgs:
          cloud-provider: external
  - role: worker
    kubeadmConfigPatches:
    - |
      kind: JoinConfiguration
      nodeRegistration:
        kubeletExtraArgs:
          cloud-provider: external

kind01.clab.yaml

name: kind01

topology:
  kinds:
    nokia_srlinux:
      image: ghcr.io/nokia/srlinux:23.10.1
  nodes:
    srl01:
      kind: nokia_srlinux
    k01:
      kind: k8s-kind
      startup-config: k01-config.yaml
    k02:
      kind: k8s-kind
      startup-config: k01-config.yaml

    k01-control-plane:
      kind: ext-container
      exec:
        - "ip addr add dev eth1 192.168.10.1/24"
    k01-worker:
      kind: ext-container
      exec:
        - "ip addr add dev eth1 192.168.11.1/24"

    k02-control-plane:
      kind: ext-container
      exec:
        - "ip addr add dev eth1 192.168.20.1/24"
    k02-worker:
      kind: ext-container
      exec:
        - "ip addr add dev eth1 192.168.21.1/24"

  links:
    - endpoints: ["srl01:e1-1", "k01-control-plane:eth1"]
    - endpoints: ["srl01:e1-2", "k01-worker:eth1"]

    - endpoints: ["srl01:e1-3", "k02-control-plane:eth1"]
    - endpoints: ["srl01:e1-4", "k02-worker:eth1"]

service-account.yaml

apiVersion: v1
kind: ServiceAccount
metadata:
  name: node-ip-reporter