A Kubernetes-native Role or ClusterRole used in Role-Bbased Access Control (RBAC) defines a set of permissions. A Role defines permissions scoped to a namespace. A ClusterRole defines permissions on cluster-scoped resources. This topic describes how to customize a Role and a ClusterRole.
Introduction to Roles and ClusterRoles
You can create a Role or ClusterRole by using a YAML file or the Alibaba Cloud Container Compute Service (ACS) console.
Create a Role
To define permissions scoped to a namespace, create a Role.
The following YAML template provides an example on how to create a Role in the default namespace. You can use this Role to grant full permissions on pods in the default namespace.
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
name: test-role
namespace: default
rules:
- apiGroups:
- ""
resources:
- pods
verbs:
- create
- delete
- deletecollection
- get
- list
- patch
- update
- watch
Create a ClusterRole
To define cluster-wide permissions, create a ClusterRole.
The following YAML template provides an example on how to create a ClusterRole. You can use this ClusterRole to grant full permissions on pods in a namespace.
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: test-clusterrole
rules:
- apiGroups:
- ""
resources:
- pods
verbs:
- create
- delete
- deletecollection
- get
- list
- patch
- update
- watch
For more information about Roles and ClusterRoles, see Roles and ClusterRoles.
Create a custom RBAC role
This section shows how to create a custom ClusterRole for a Resource Access Management (RAM) user or RAM role. The steps to create a ClusterRole are similar to the steps to create a Role.
Log on to the ACS console. In the left-side navigation pane, click Clusters.
On the Clusters page, find the cluster that you want to manage and click its name. In the left-side pane, choose .
On the Role page, click the Cluster Role tab.
On the Cluster Role tab, click Create.
In the Create YAML pane, enter the content of the ClusterRole and click OK to create the ClusterRole.
In this step, the YAML template used in the Create a ClusterRole section of How to create an RBAC role is used. After the ClusterRole is created, you can view the ClusterRole named test-clusterrole on the Cluster Role tab.
What to do next
For more information about how to assign RBAC roles to RAM users or RAM roles, see Grant RBAC permissions to RAM users or RAM roles.