Resolve comments

Author: RichardChen820

articles/azure-app-configuration/reference-kubernetes-provider.md

@@ -32,13 +32,13 @@ The `spec.target` property has the following child property.
 |---|---|---|---|
 |configMapName|The name of the ConfigMap to be created|true|string|
 
-If the `spec.auth` property isn't set, the system-assigned managed identity is used. It has the following child properties. Only one authentication method should be set.
+The `spec.auth` property isn't required if the connection string of your App Configuration store is provided by setting the `spec.connectionStringReference` property. Otherwise, the [DefaultAzureCredential](https://pkg.go.dev/github.com/Azure/azure-sdk-for-go/sdk/azidentity#DefaultAzureCredential) is used for authentication and it will try an ordered list of credential types.
 
 |Name|Description|Required|Type|
 |---|---|---|---|
-|managedIdentityClientId|The Client ID of user-assigned managed identity|false|string|
 |servicePrincipalReference|The name of the Kubernetes Secret that contains the credentials of a service principal|false|string|
 |workloadIdentity|The settings for using workload identity|false|object|
+|managedIdentityClientId|The Client ID of user-assigned managed identity of VMSS. The absence of this property indicates that system-assigned managed identity should be attempted during authentication if another credential type doesn't take priority|false|string|
 
 The `spec.auth.workloadIdentity` property has the following child property.
 
@@ -79,19 +79,19 @@ If the `spec.keyValues.keyVaults.auth` property isn't set, the system-assigned m
 
 |Name|Description|Required|Type|
 |---|---|---|---|
-|managedIdentityClientId|The client ID of a user-assigned managed identity used for authentication with vaults that don't have individual authentication methods specified|false|string|
 |servicePrincipalReference|The name of the Kubernetes Secret that contains the credentials of a service principal used for authentication with vaults that don't have individual authentication methods specified|false|string|
-|workloadIdentity|The settings of the workload identity used for authentication with vaults that don't have individual authentication methods specified, it has same child property with `spec.auth.workloadIdentity`|false|object|
+|workloadIdentity|The settings of the workload identity used for authentication with vaults that don't have individual authentication methods specified. It has the same child properties as `spec.auth.workloadIdentity`|false|object|
+|managedIdentityClientId|The client ID of a user-assigned managed identity of VMSS used for authentication with vaults that don't have individual authentication methods specified. The absence of this property indicates that system-assigned managed identity should be attempted during authentication if another credential type doesn't take priority|false|string|
 |vaults|The authentication methods for individual vaults|false|object array|
 
 The authentication method of each *vault* can be specified with the following properties. One of `managedIdentityClientId`, `servicePrincipalReference` or `workloadIdentity` must be provided.
 
 |Name|Description|Required|Type|
 |---|---|---|---|
 |uri|The URI of a vault|true|string|
-|managedIdentityClientId|The client ID of a user-assigned managed identity used for authentication with a vault|false|string|
 |servicePrincipalReference|The name of the Kubernetes Secret that contains the credentials of a service principal used for authentication with a vault|false|string|
-|workloadIdentity|The settings of the workload identity used for authentication with a vault, it has same child property with `spec.auth.workloadIdentity`|false|object|
+|workloadIdentity|The settings of the workload identity used for authentication with a vault. It has the same child properties as `spec.auth.workloadIdentity`|false|object|
+|managedIdentityClientId|The client ID of a user-assigned managed identity of VMSS used for authentication with a vault|false|string|
 
 The `spec.keyValues.refresh` property has the following child properties.
 
@@ -111,9 +111,9 @@ The `spec.keyValues.refresh.monitoring.keyValues` is an array of objects, which
 
 ### Authentication
 
-#### Use System-Assigned Managed Identity
+#### Use System-Assigned Managed Identity of VMSS
 
-1. [Enable the system-assigned managed identity in the virtual machine scale set](/azure/active-directory/managed-identities-azure-resources/qs-configure-portal-windows-vmss#enable-system-assigned-managed-identity-on-an-existing-virtual-machine-scale-set) used by the Azure Kubernetes Service (AKS) cluster.
+1. [Enable the system-assigned managed identity in the virtual machine scale set (VMSS)](/azure/active-directory/managed-identities-azure-resources/qs-configure-portal-windows-vmss#enable-system-assigned-managed-identity-on-an-existing-virtual-machine-scale-set) used by the Azure Kubernetes Service (AKS) cluster.
 
 1. [Grant the system-assigned managed identity **App Configuration Data Reader** role](/azure/azure-app-configuration/howto-integrate-azure-managed-service-identity#grant-access-to-app-configuration) in Azure App Configuration.
 
@@ -130,11 +130,11 @@ The `spec.keyValues.refresh.monitoring.keyValues` is an array of objects, which
         configMapName: configmap-created-by-appconfig-provider
     ```
 
-#### Use User-Assigned Managed Identity at cluster level
+#### Use User-Assigned Managed Identity of VMSS
 
 1. [Create a user-assigned managed identity](/azure/active-directory/managed-identities-azure-resources/how-manage-user-assigned-managed-identities#create-a-user-assigned-managed-identity) and note down its client ID after creation.
 
-1. [Assign the user-assigned managed identity to the virtual machine scale set](/azure/active-directory/managed-identities-azure-resources/qs-configure-portal-windows-vmss#user-assigned-managed-identity) used by the Azure Kubernetes Service (AKS) cluster.
+1. [Assign the user-assigned managed identity to the virtual machine scale set (VMSS)](/azure/active-directory/managed-identities-azure-resources/qs-configure-portal-windows-vmss#user-assigned-managed-identity) used by the Azure Kubernetes Service (AKS) cluster.
 
 1. [Grant the user-assigned managed identity **App Configuration Data Reader** role](/azure/active-directory/managed-identities-azure-resources/qs-configure-portal-windows-vmss#user-assigned-managed-identity) in Azure App Configuration.
 
@@ -178,17 +178,6 @@ The `spec.keyValues.refresh.monitoring.keyValues` is an array of objects, which
 
 #### Use workload identity
 
-1. Explicitly use workload identity while install the Azure App Configuration Kubernetes Provider by helm
-   
-   ``` bash
-   helm install azureappconfiguration.kubernetesprovider \
-     oci://mcr.microsoft.com/azure-app-configuration/helmchart/kubernetes-provider \
-     --version 1.0.0-preview4 \
-     --namespace azappconfig-system \
-     --create-namespace \
-     --set workloadIdentity.enabled=true
-   ```
-
 1. [Enable Workload Identity](/azure/aks/workload-identity-deploy-cluster#update-an-existing-aks-cluster) on the Azure Kubernetes Service (AKS) cluster.
 
 1. [Get the OIDC issuer URL](/azure/aks/workload-identity-deploy-cluster#retrieve-the-oidc-issuer-url) of the AKS cluster.
@@ -198,7 +187,7 @@ The `spec.keyValues.refresh.monitoring.keyValues` is an array of objects, which
 1. Create the federated identity credential between the managed identity, OIDC issuer, and subject using the Azure CLI.
 
    ``` azurecli
-   az identity federated-credential create --name ${FEDERATED_IDENTITY_CREDENTIAL_NAME} --identity-name "${USER_ASSIGNED_IDENTITY_NAME}" --resource-group "${RESOURCE_GROUP}" --issuer "${AKS_OIDC_ISSUER}" --subject system:serviceaccount:azappconfig-system:az-appconfig-k8s-provider --audience api://AzureADTokenExchange
+   az identity federated-credential create --name "${FEDERATED_IDENTITY_CREDENTIAL_NAME}" --identity-name "${USER_ASSIGNED_IDENTITY_NAME}" --resource-group "${RESOURCE_GROUP}" --issuer "${AKS_OIDC_ISSUER}" --subject system:serviceaccount:azappconfig-system:az-appconfig-k8s-provider --audience api://AzureADTokenExchange
    ```
 
 1. [Grant the user-assigned managed identity **App Configuration Data Reader** role](/azure/active-directory/managed-identities-azure-resources/qs-configure-portal-windows-vmss#user-assigned-managed-identity) in Azure App Configuration.