<p>I have a User "A". I have namespaces X,Y,Z. I have created a RBAC user role and role binding for user "A" who has access to Namespace "X".</p>

<p>I wanted to give the user "A" access to kubernetes dashboard (which is a role and role binding for Kube-System). But when I give the access for dashboard, user "A" is able to see all the namespaces.</p>

<p>But I want him to see only namespace X which he has access). </p>

<p>How could I go about this? </p>

krishna m
<p>What's the version of your Dashboard? As far as I know, from 1.7 on, Dashboard has used more secure setup, It means, that by default it has the minimal set of privileges, that are required to make Dashboard work. </p>

<p>Anyway, you can check the privileges of the sa that used by Dashboard, make sure it has the minimal privileges, like this:</p>

<pre><code>kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: kubernetes-dashboard-minimal
  namespace: kube-system
rules:
  # Allow Dashboard to create 'kubernetes-dashboard-key-holder' secret.
- apiGroups: [""]
  resources: ["secrets"]
  verbs: ["create"]
  # Allow Dashboard to create 'kubernetes-dashboard-settings' config map.
- apiGroups: [""]
  resources: ["configmaps"]
  verbs: ["create"]
  # Allow Dashboard to get, update and delete Dashboard exclusive secrets.
- apiGroups: [""]
  resources: ["secrets"]
  resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs"]
  verbs: ["get", "update", "delete"]
  # Allow Dashboard to get and update 'kubernetes-dashboard-settings' config map.
- apiGroups: [""]
  resources: ["configmaps"]
  resourceNames: ["kubernetes-dashboard-settings"]
  verbs: ["get", "update"]
  # Allow Dashboard to get metrics from heapster.
- apiGroups: [""]
  resources: ["services"]
  resourceNames: ["heapster"]
  verbs: ["proxy"]
- apiGroups: [""]
  resources: ["services/proxy"]
  resourceNames: ["heapster", "http:heapster:", "https:heapster:"]
  verbs: ["get"]

---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: kubernetes-dashboard-minimal
  namespace: kube-system
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: kubernetes-dashboard-minimal
subjects:
- kind: ServiceAccount
  name: kubernetes-dashboard
  namespace: kube-system
</code></pre>

<p>Then, create RBAC rules to give the full privileges for namespace X to A:</p>

<pre><code>apiVersion: rbac.authorization.k8s.io/v1beta1
kind: RoleBinding
metadata:
  name: user-A-admin
  namespace: X
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: User
  name: A
</code></pre>

<p>Make sure user A doesn't have any other RBAC rules.</p>
