AKS cluster must enable RBAC

High Azure General aks-rbac

Applies to

Microsoft.ContainerService/managedClusters

What CGPulse checks

A resource passes this rule when enableRbac must equal true. Anything else is reported as a finding with the evaluated property value attached as evidence.

How to fix it

Enable Kubernetes RBAC to enforce granular access control within the cluster. In Azure Portal: AKS cluster > Cluster configuration > enable Kubernetes RBAC. See: https://learn.microsoft.com/en-us/azure/aks/manage-azure-rbac

Careful: Enabling Kubernetes RBAC changes the authorization model. Existing service accounts and bindings may be affected

CLI

az aks update --ids "{id}" --enable-aad --enable-azure-rbac

Terraform

resource "azurerm_kubernetes_cluster" "{name}" {
  name                = "{name}"
  resource_group_name = "{rg}"
  location            = var.location
  dns_prefix          = "{name}"
  role_based_access_control_enabled = true
  default_node_pool {
    name       = "default"
    node_count = 1
    vm_size    = "Standard_D2s_v5"
  }
  identity { type = "SystemAssigned" }
}

Compliance frameworks

Vendor documentation

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