User "system:anonymous" cannot get resource

By running the following command, you should get the addresses of the control plane and services, labeled with kubernetes.io/cluster-service=true

cluster-info
$ kubectl cluster-info
Kubernetes control plane is running at https://<master_IP>:8383
kubernetes-dashboard is running at https://<master_IP>:8383/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy

If, trying to reach the link related to the kubernetes-dashboard, you get the following output

{
  "kind": "Status",
  "apiVersion": "v1",
  "metadata": {

  },
  "status": "Failure",
  "message": "services \"https:kubernetes-dashboard:\" is forbidden: User \"system:anonymous\" cannot get resource \"services/proxy\" in API group \"\" in the namespace \"kube-system\"",
  "reason": "Forbidden",
  "details": {
    "name": "https:kubernetes-dashboard:",
    "kind": "services"
  },
  "code": 403
}

You will need to create a clusterrole to grant permission to kubernetes-dashboard and bind it to system:anonymous user as followed. To apply these changes, save it into a yaml file and run kubectl apply command.

kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: kubernetes-dashboard-anonymous
rules:
- apiGroups: [""]
  resources: ["services/proxy"]
  resourceNames: ["https:kubernetes-dashboard:"]
  verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
- nonResourceURLs: ["/ui", "/ui/*", "/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/*"]
  verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: kubernetes-dashboard-anonymous
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: kubernetes-dashboard-anonymous
subjects:
- kind: User
  name: system:anonymous
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