:~$ k -n monitoring get rolebinding monitoring-viewers -o yaml
apiVersion: authorization.openshift.io/v1
groupNames:
- monitoring-viewers
kind: RoleBinding
metadata:
  name: monitoring-viewers
  namespace: monitoring
roleRef:
  name: view
subjects:
- kind: Group
  name: monitoring-viewers
- kind: ServiceAccount
  name: prom
  namespace: monitoring
userNames:
- system:serviceaccount:monitoring:prom

:~$ k -n monitoring get clusterrole view -o yaml
aggregationRule:
  clusterRoleSelectors:
  - matchLabels:
      rbac.authorization.k8s.io/aggregate-to-view: "true"
apiVersion: authorization.openshift.io/v1
kind: ClusterRole
metadata:
  annotations:
    openshift.io/description: A user who can view but not edit any resources within
      the project. They can not view secrets or membership.
    openshift.io/reconcile-protect: "false"
  labels:
    kubernetes.io/bootstrapping: rbac-defaults
  name: view
rules:
- apiGroups:
  - ""
  attributeRestrictions: null
  resources:
  - configmaps
  - endpoints
  - persistentvolumeclaims
  - pods
  - replicationcontrollers
  - replicationcontrollers/scale
  - serviceaccounts
  - services
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  attributeRestrictions: null
  resources:
  - bindings
  - events
  - limitranges
  - namespaces/status
  - pods/log
  - pods/status
  - replicationcontrollers/status
  - resourcequotas
  - resourcequotas/status
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  attributeRestrictions: null
  resources:
  - namespaces
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - apps
  attributeRestrictions: null
  resources:
  - daemonsets
  - deployments
  - deployments/scale
  - replicasets
  - replicasets/scale
  - statefulsets
  - statefulsets/scale
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - autoscaling
  attributeRestrictions: null
  resources:
  - horizontalpodautoscalers
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - batch
  attributeRestrictions: null
  resources:
  - cronjobs
  - jobs
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - extensions
  attributeRestrictions: null
  resources:
  - daemonsets
  - deployments
  - deployments/scale
  - ingresses
  - networkpolicies
  - replicasets
  - replicasets/scale
  - replicationcontrollers/scale
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - policy
  attributeRestrictions: null
  resources:
  - poddisruptionbudgets
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - networking.k8s.io
  attributeRestrictions: null
  resources:
  - networkpolicies
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  - build.openshift.io
  attributeRestrictions: null
  resources:
  - buildconfigs
  - buildconfigs/webhooks
  - builds
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  - build.openshift.io
  attributeRestrictions: null
  resources:
  - builds/log
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - build.openshift.io
  attributeRestrictions: null
  resources:
  - jenkins
  verbs:
  - view
- apiGroups:
  - ""
  - apps.openshift.io
  attributeRestrictions: null
  resources:
  - deploymentconfigs
  - deploymentconfigs/scale
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  - apps.openshift.io
  attributeRestrictions: null
  resources:
  - deploymentconfigs/log
  - deploymentconfigs/status
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  - image.openshift.io
  attributeRestrictions: null
  resources:
  - imagestreamimages
  - imagestreammappings
  - imagestreams
  - imagestreamtags
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  - image.openshift.io
  attributeRestrictions: null
  resources:
  - imagestreams/status
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  - project.openshift.io
  attributeRestrictions: null
  resources:
  - projects
  verbs:
  - get
- apiGroups:
  - ""
  - quota.openshift.io
  attributeRestrictions: null
  resources:
  - appliedclusterresourcequotas
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  - route.openshift.io
  attributeRestrictions: null
  resources:
  - routes
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  - route.openshift.io
  attributeRestrictions: null
  resources:
  - routes/status
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  - template.openshift.io
  attributeRestrictions: null
  resources:
  - processedtemplates
  - templateconfigs
  - templateinstances
  - templates
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  - build.openshift.io
  attributeRestrictions: null
  resources:
  - buildlogs
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  attributeRestrictions: null
  resources:
  - resourcequotausages
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - servicecatalog.k8s.io
  attributeRestrictions: null
  resources:
  - servicebindings
  - serviceinstances
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - servicecatalog.k8s.io
  attributeRestrictions: null
  resources:
  - servicebrokers
  verbs:
  - get
- apiGroups:
  - servicecatalog.k8s.io
  attributeRestrictions: null
  resources:
  - servicebrokers
  verbs:
  - list
- apiGroups:
  - servicecatalog.k8s.io
  attributeRestrictions: null
  resources:
  - servicebrokers
  verbs:
  - watch
- apiGroups:
  - servicecatalog.k8s.io
  attributeRestrictions: null
  resources:
  - serviceclasses
  verbs:
  - get
- apiGroups:
  - servicecatalog.k8s.io
  attributeRestrictions: null
  resources:
  - serviceclasses
  verbs:
  - list
- apiGroups:
  - servicecatalog.k8s.io
  attributeRestrictions: null
  resources:
  - serviceclasses
  verbs:
  - watch
- apiGroups:
  - servicecatalog.k8s.io
  attributeRestrictions: null
  resources:
  - serviceplans
  verbs:
  - get
- apiGroups:
  - servicecatalog.k8s.io
  attributeRestrictions: null
  resources:
  - serviceplans
  verbs:
  - list
- apiGroups:
  - servicecatalog.k8s.io
  attributeRestrictions: null
  resources:
  - serviceplans
  verbs:
  - watch

  :~$ k --as=system:serviceaccount:monitoring:prom get ns
Error from server (Forbidden): namespaces is forbidden: User "system:serviceaccount:monitoring:prom" cannot list namespaces at the cluster scope: no RBAC policy matched