RBAC Manager简化 K8s 授权的 Operator

RBAC Manager 是一个使用自定义资源对 RBAC 进行声明式配置的 Operator，它的目标是简化 Kubernetes 的授权，减少授权所需的配置量，使其更易扩展。例如， 有如下两个原生的 RoleBinding 配置清单：

kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: joe-web
  namespace: web
subjects:
- kind: User
  name: joe@example.com
roleRef:
  kind: ClusterRole
  name: edit
  apiGroup: rbac.authorization.k8s.io

kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: joe-api
  namespace: api
subjects:
- kind: User
  name: joe@example.com
roleRef:
  kind: ClusterRole
  name: view
  apiGroup: rbac.authorization.k8s.io

使用 RBAC Manager 后只需一个自定义资源即可实现相同的授权：

apiVersion: rbacmanager.reactiveops.io/v1beta1
kind: RBACDefinition
metadata:
  name: joe-access
rbacBindings:
  - name: joe
    subjects:
      - kind: User
        name: joe@example.com
    roleBindings:
      - namespace: api
        clusterRole: view
      - namespace: web
        clusterRole: edit