Supporting Azure private storage

Cloudera Data Engineering (CDE) stores all the metadata and application files in Azure Files. By default, CDE relies on Azure Kubernetes Service (AKS) to create a public Azure Storage Account in the AKS Node Resource Group. The provisioned Storage Account will be used only for Azure Files in CDE and will be deleted once the CDE service is deleted.

With CDE 1.16, the Azure Files used for storing CDE internal metadata can be overridden with custom private/public Azure Files.

Creating Private Azure files

Create a Private Azure Account. For more information, see Private Endpoints for Azure Storage below. Be sure to create a Private Endpoint for Files as target sub-resource since CDE only uses Azure Files. This means that blobs, tables, queues, and so on are not used.

Table 1. Sample creation commands
Action Command
Export Variables RESOURCE_GROUP=TestCDEPrivateResourceGroup \ STORAGE_ACCOUNT_NAME=testcdeprivatestorageaccount \ PRIVATE_ENDPOINT_NAME=private-endpoint-${STORAGE_ACCOUNT_NAME} \ VNET_NAME=cde-vnet \ VNET_RESOURCE_GROUP=TestCDEPrivateResourceGroup \ DNS_ZONE_NAME=${STORAGE_ACCOUNT_NAME} \ VNET_LINK_NAME=vnet-link-${STORAGE_ACCOUNT_NAME}
Create Private Storage Account az storage account create --name ${STORAGE_ACCOUNT_NAME} --resource-group ${RESOURCE_GROUP} --allow-blob-public-access false --https true --public-network-access Disabled --sku Standard_LRS --location westus2
Get Storage Account ID STORAGE_ACCOUNT_ID=$(az storage account show --resource-group ${RESOURCE_GROUP} --name ${STORAGE_ACCOUNT_NAME} | jq -r .id)
Get Subnet ID SUBNET_ID=$(az network vnet subnet list --resource-group ${VNET_RESOURCE_GROUP} --vnet-name ${VNET_NAME} | jq -r '.[0].id')
Create Private Endpoint az network private-endpoint create --connection-name myConnection --name ${PRIVATE_ENDPOINT_NAME} --private-connection-resource-id ${STORAGE_ACCOUNT_ID} --location westus2 --subnet ${SUBNET_ID} --resource-group ${RESOURCE_GROUP} --group-id file
Get Private Endpoint IP PRIVATE_ENDPOINT_IP=$(az network private-endpoint show --name ${PRIVATE_ENDPOINT_NAME} --resource-group ${RESOURCE_GROUP} | jq -r '.customDnsConfigs | .[0].ipAddresses | .[0]')
Create Private DNS Zone az network private-dns zone create --resource-group ${RESOURCE_GROUP} --name ${DNS_ZONE_NAME}
Create Private DNS Zone record az network private-dns record-set a add-record --resource-group ${RESOURCE_GROUP} --zone-name ${DNS_ZONE_NAME} --record-set-name @ --ipv4-address ${PRIVATE_ENDPOINT_IP}
Get VNet ID VNET_ID=$(az network vnet show --resource-group ${VNET_RESOURCE_GROUP} --name ${VNET_NAME} | jq -r .id)
Link DNS Zone to VNet az network private-dns link vnet create --name ${VNET_LINK_NAME} --registration-enabled false --resource-group ${RESOURCE_GROUP} --virtual-network ${VNET_ID} --zone-name ${DNS_ZONE_NAME}
Enable CDE Service for Azure
  1. Navigate to the Cloudera Data Engineering Overview page by clicking the Data Engineering tile in the Cloudera Data Platform (CDP) management console.
  2. In the CDE Environments column, click the plus icon at the top or the Enable new CDE link at the bottom to enable CDE for an environment.
  3. Select an Azure environment.
  4. Select the Override Azure Files Storage Server option.
  5. Enter the Storage Account name and Resource group of the Storage Account.
  6. For Azure Files FQDN, enter the Private Endpoint FQDN that you created in the prerequisites above.
  7. Fill out the necessary details and click Create.
Using customer-managed key encryption

You can enable CMK encryption with CDE in Azure. Below are high-level instructions to enable CMK encryption. For detailed instructions, see Customer-managed keys for Azure Storage encryption linked below.

  1. Create a key vault and grant corresponding permission to the service principle that is used to create CDP environment.
  2. Associate the private storage account and key vault when enabling the CMK encryption.
  3. In their job’s code, set up ABFS authentication configurations and access the abfs:// files.