AKS cluster should disable local accounts

High Azure General aks-aks-cluster-disable-local

Applies to

Microsoft.ContainerService/managedClusters

What CGPulse checks

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

How to fix it

Disable local accounts to enforce Azure AD-only authentication and full audit logging. In Azure Portal: AKS > Cluster configuration > disable local accounts. See: https://learn.microsoft.com/en-us/azure/aks/managed-azure-ad#disable-local-accounts

Careful: All kubectl access will require Azure AD authentication after this. Ensure AAD integration is configured first

CLI

az aks update --ids "{id}" --disable-local-accounts

Terraform

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

Compliance frameworks

Cloud Security BaselineIM-1

Vendor documentation

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