Disable key-based authentication with Azure Cosmos DB for Apache Cassandra

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First, disable key-based authentication to your existing account so that applications are required to use Microsoft Entra authentication. Use az resource update to modify properties.disableLocalAuth of the existing account.

az resource update \
    --resource-group "<name-of-existing-resource-group>" \
    --name "<name-of-existing-account>" \
    --resource-type "Microsoft.DocumentDB/databaseAccounts" \
    --set properties.disableLocalAuth=true \
    --set properties.disableKeyBasedMetadataWriteAccess=true

First, create a new account with key-based authentication disabled so that applications are required to use Microsoft Entra authentication.

1. Create a new Bicep file to deploy your new account with key-based authentication disabled. Name the file deploy-new-account.bicep.

   metadata description = 'Deploys a new Azure Cosmos DB account with key-based auth disabled.'
   
   @description('Name of the Azure Cosmos DB account.')
   param name string = 'csms-${uniqueString(resourceGroup().id)}'
   
   @description('Primary location for the Azure Cosmos DB account.')
   param location string = resourceGroup().location
   
   resource account 'Microsoft.DocumentDB/databaseAccounts@2024-05-15' = {
     name: name
     location: location
     kind: 'GlobalDocumentDB'
     properties: {
       databaseAccountOfferType: 'Standard'
       locations: [
         {
           locationName: location
         }
       ]
       disableLocalAuth: true,
       disableKeyBasedMetadataWriteAccess: true
     }
   }
   

2. Use az deployment group create to deploy the Bicep file with the new account.

   az deployment group create \
       --resource-group "<name-of-existing-resource-group>" \
       --template-file deploy-new-account.bicep
   

First, disable key-based authentication to your existing account so that applications are required to use Microsoft Entra authentication. Use Get-AzResource and Set-AzResource to respectively read and update the existing account.

$parameters = @{
    ResourceGroupName = "<name-of-existing-resource-group>"
    ResourceName = "<name-of-existing-account>"
    ResourceType = "Microsoft.DocumentDB/databaseAccounts"
}
$resource = Get-AzResource @parameters

$resource.Properties.DisableLocalAuth = $true
$resource.Properties.DisableKeyBasedMetadataWriteAccess = $true

$resource | Set-AzResource -Force