Example of roles in K8S with RBAC

rbac_role_cluster.yaml

---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: staging-node-user
rules:
  - apiGroups: [""]
    resources: ["nodes"]
    verbs: ["get", "list", "watch"]
  - apiGroups: [""]
    resources: ["services", "services/proxy"]
    verbs: ["proxy", "get"]

---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: staging-node-user-binding
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: staging-node-user
subjects:
  # Test user
  - apiGroup: rbac.authorization.k8s.io
    kind: User
    name: test@jetthoughts.com
  # Infrastructure team
  - apiGroup: rbac.authorization.k8s.io
    kind: User
    name: ninja@jetthoughts.com
 
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: event-lister-user-binding
  namespace: kube-system
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: view
subjects:
  # Test user
  - apiGroup: rbac.authorization.k8s.io
    kind: User
    name: test@jetthoughts.com
  # Infrastructure team
  - apiGroup: rbac.authorization.k8s.io
    kind: User
    name: ninja@jetthoughts.com

rbac_role_in_namespace.yaml

kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  namespace: project
  name: dev
rules:
- apiGroups: [""]
  resources: ["pods", "deployments", "jobs", "services", "configmaps"]
  verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
- apiGroups: ["extensions", "apps", "autoscaling"]
  resources: ["deployments", "horizontalpodautoscalers", "ingresses", "replicasets"]
  verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
- apiGroups: [""]
  resources: ["pods/log"]
  verbs: ["get"]
- apiGroups: [""]
  resources: ["pods/exec", "pods/attach"]
  verbs: ["create", "delete"]

---

kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  namespace: project
  name: admin
rules:
- apiGroups: ["*"]
  resources: ["*"]
  verbs: ["*"]

---

apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: project-dev-binding
  namespace: project
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: dev
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: User
  name: john@jetthoughts.com

---

apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: project-admin-binding
  namespace: project
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: admin
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: User
  name: admin@jetthoughts.com