ClusterAuthzRoleBinding

A ClusterAuthzRoleBinding connects a subject (identified by a JWT claim-value pair) to one or more ClusterAuthzRole resources, granting or denying the roles' permissions. Each role mapping can optionally be scoped to a specific namespace, project, or component within the resource hierarchy.

API Version

openchoreo.dev/v1alpha1

Resource Definition

Metadata

ClusterAuthzRoleBindings are cluster-scoped resources.

apiVersion: openchoreo.dev/v1alpha1
kind: ClusterAuthzRoleBinding
metadata:
  name: <binding-name>

Spec Fields

Field	Type	Required	Default	Description
entitlement	EntitlementClaim	Yes	-	Subject identification from JWT claims
roleMappings	ClusterRoleMapping[]	Yes	-	List of role-scope pairs this binding applies to
effect	string	No	allow	allow or deny

EntitlementClaim

Field	Type	Required	Description
claim	string	Yes	JWT claim name (e.g., groups, sub, email)
value	string	Yes	JWT claim value to match (e.g., platformEngineer)

ClusterRoleMapping

Each entry in the roleMappings array pairs a role reference with an optional scope.

Field	Type	Required	Description
roleRef	RoleRef	Yes	Reference to the cluster role to bind
scope	ClusterTargetScope	No	Narrows the mapping to a specific namespace, project, or component. Omit for cluster-wide

RoleRef

Field	Type	Required	Description
kind	string	Yes	Must be ClusterAuthzRole
name	string	Yes	Name of the ClusterAuthzRole to bind

ClusterTargetScope

All fields are optional. Omitted fields mean "all" at that level.

Field	Type	Required	Description
namespace	string	No	Scope to a specific namespace
project	string	No	Scope to a specific project (requires namespace)
component	string	No	Scope to a specific component (requires namespace and project)

important

• roleMappings[].roleRef.kind must be ClusterAuthzRole. ClusterAuthzRoleBindings cannot reference namespace-scoped AuthzRole resources. This is enforced by a validation rule on the resource.
• scope.project requires scope.namespace, and scope.component requires scope.project.

Examples

Grant Admin Access Cluster-Wide

apiVersion: openchoreo.dev/v1alpha1
kind: ClusterAuthzRoleBinding
metadata:
  name: platform-admins-binding
spec:
  entitlement:
    claim: groups
    value: platformEngineer
  roleMappings:
    - roleRef:
        kind: ClusterAuthzRole
        name: platform-admin
  effect: allow

Grant Viewer Access to a Service Account

apiVersion: openchoreo.dev/v1alpha1
kind: ClusterAuthzRoleBinding
metadata:
  name: backstage-reader-binding
spec:
  entitlement:
    claim: sub
    value: openchoreo-backstage-client
  roleMappings:
    - roleRef:
        kind: ClusterAuthzRole
        name: viewer
  effect: allow

Namespace-Scoped Admin with Cluster-Wide Reader

Multiple role mappings can be combined in a single binding, each with an independent scope:

apiVersion: openchoreo.dev/v1alpha1
kind: ClusterAuthzRoleBinding
metadata:
  name: acme-admins-binding
spec:
  entitlement:
    claim: groups
    value: acme-admins
  roleMappings:
    - roleRef:
        kind: ClusterAuthzRole
        name: admin
      scope:
        namespace: acme
    - roleRef:
        kind: ClusterAuthzRole
        name: cluster-reader
  effect: allow

In this example, acme-admins gets full admin access scoped to the acme namespace and cluster-wide read-only visibility into cluster-level resources — all in a single CR.

Allow and Deny

Both ClusterAuthzRoleBinding and AuthzRoleBinding carry an effect field: either allow or deny. When multiple bindings match a request, the system follows a deny-overrides strategy:

• If any matching binding has effect allow AND no matching binding has effect deny: ALLOW
• If any matching binding has effect deny: DENY (deny always wins)
• If no bindings match: DENY (default deny)

A single deny binding can override any number of allow bindings, making it straightforward to revoke specific permissions without restructuring the entire role hierarchy.

Related Resources

• ClusterAuthzRole - Cluster-scoped role definition
• AuthzRoleBinding - Namespace-scoped role binding with optional target scope
• AuthzRole - Namespace-scoped role definition