Create a resource lock for Azure Cosmos Cassandra API keyspace and table using Azure PowerShell

APPLIES TO: Cassandra API

Note

This article uses the Azure Az PowerShell module, which is the recommended PowerShell module for interacting with Azure. To get started with the Az PowerShell module, see Install Azure PowerShell. To learn how to migrate to the Az PowerShell module, see Migrate Azure PowerShell from AzureRM to Az.

This sample requires Azure PowerShell Az 5.4.0 or later. Run Get-Module -ListAvailable Az to see which versions are installed. If you need to install, see Install Azure PowerShell module.

Run Connect-AzAccount to sign in to Azure.

Important

Resource locks do not work for changes made by users connecting using any Cassandra SDK, CQL Shell, or the Azure Portal unless the Cosmos DB account is first locked with the disableKeyBasedMetadataWriteAccess property enabled. To learn more about how to enable this property see, Preventing changes from SDKs.

Sample script

# References:
# Az.CosmosDB | https://docs.microsoft.com/powershell/module/az.cosmosdb
# Az.Resources | https://docs.microsoft.com/powershell/module/az.resources
# --------------------------------------------------
# Purpose
# 
# --------------------------------------------------
# Variables
# ***** SUBSTITUTE YOUR VALUES *****
$resourceGroupName = "myResourceGroup"
$accountName = "myaccount"
$databaseName = "mykeyspace"
$collectionName = "mytable"
# *****
$apiVersion = "2020-04-01" # Cosmos DB RP API version
$lockLevel = "CanNotDelete" # CanNotDelete or ReadOnly

$resourceTypeAccount = "Microsoft.DocumentDB/databaseAccounts"
$resourceTypeDatabase = "$resourceTypeAccount/cassandraKeyspaces"
$resourceTypeCollection = "$resourceTypeDatabase/tables"

$resourceNameDatabase = "$accountName/$databaseName"
$lockNameDatabase = "$accountName-$databaseName-Lock"

$resourceNameCollection = "$accountName/$databaseName/$collectionName"
$lockNameCollection = "$accountName-$databaseName-$collectionName-Lock"
# --------------------------------------------------

Write-Host "Create a $lockLevel lock on resource $resourceNameDatabase"
New-AzResourceLock `
    -ApiVersion $apiVersion `
    -ResourceGroupName $resourceGroupName `
    -ResourceType $resourceTypeDatabase `
    -ResourceName $resourceNameDatabase `
    -LockName $lockNameDatabase `
    -LockLevel $lockLevel `
    -Force

Write-Host "Create a $lockLevel lock on resource $resourceNameCollection"
New-AzResourceLock `
    -ApiVersion $apiVersion `
    -ResourceGroupName $resourceGroupName `
    -ResourceType $resourceTypeCollection `
    -ResourceName $resourceNameCollection `
    -LockName $lockNameCollection `
    -LockLevel $lockLevel `
    -Force

Write-Host "List all locks on  Cosmos DB account $accountName to confirm lock creation"
Get-AzResourceLock `
    -ApiVersion $apiVersion `
    -ResourceGroupName $resourceGroupName `
    -ResourceType $resourceTypeAccount `
    -ResourceName $accountName

Write-Host "Delete lock on resource $resourceNameDatabase"
Remove-AzResourceLock `
    -ApiVersion $apiVersion `
    -ResourceGroupName $resourceGroupName `
    -ResourceType $resourceTypeDatabase `
    -ResourceName $resourceNameDatabase `
    -LockName $lockNameDatabase `
    -Force

Write-Host "Delete lock on resource $resourceNameCollection"
Remove-AzResourceLock `
    -ApiVersion $apiVersion `
    -ResourceGroupName $resourceGroupName `
    -ResourceType $resourceTypeCollection `
    -ResourceName $resourceNameCollection `
    -LockName $lockNameCollection `
    -Force

Write-Host "List all locks on Cosmos DB account $accountName to confirm lock removal"
Get-AzResourceLock `
    -ApiVersion $apiVersion `
    -ResourceGroupName $resourceGroupName `
    -ResourceType $resourceTypeAccount `
    -ResourceName $accountName

Clean up deployment

After the script sample has been run, the following command can be used to remove the resource group and all resources associated with it.

Remove-AzResourceGroup -ResourceGroupName "myResourceGroup"

Script explanation

This script uses the following commands. Each command in the table links to command specific documentation.

Command	Notes
Azure Resource
New-AzResourceLock	Creates a resource lock.
Get-AzResourceLock	Gets a resource lock, or lists resource locks.
Remove-AzResourceLock	Removes a resource lock.

Next steps

For more information on Azure PowerShell, see Azure PowerShell documentation.