Create an Azure Cosmos DB Cassandra API serverless account, keyspace and table using Azure CLI

APPLIES TO: Cassandra

The script in this article demonstrates creating a serverless Azure Cosmos DB account, keyspace, and table for API for Cassandra.

If you don't have an Azure trail subscription, create a trial subscription before you begin.

Prerequisites

You can use the local Azure CLI.

• If you prefer, install the Azure CLI to run CLI reference commands.

• Local Azure CLI, see how to install the Azure CLI. If you're running on Windows or macOS, consider running Azure CLI in a Docker container. For more information, see How to run the Azure CLI in a Docker container.

  • Sign in to the Azure CLI by using the az login command. To finish the authentication process, follow the steps displayed in your terminal. For other sign-in options, see Sign in with the Azure CLI.

  • When you're prompted, install the Azure CLI extension on first use. For more information about extensions, see Use extensions with the Azure CLI.

  • Run az version to find the version and dependent libraries that are installed. To upgrade to the latest version, run az upgrade.

• This article requires Azure CLI version 2.12.1 or later. Run az --version to find the version. If you need to install or upgrade, see Install Azure CLI.

  Note

  Before you can use Azure CLI in Microsoft Azure operated by 21Vianet, please run az cloud set -n AzureChinaCloud first to change the cloud environment. If you want to switch back to Azure Public Cloud, run az cloud set -n AzureCloud again.

Sample script

Sign in to Azure

Use the following script to sign in using a different subscription, replacing <Subscription ID> with your Azure Subscription ID. If you don't have an Azure trail subscription, create a trial subscription before you begin.

az cloud set -n AzureChinaCloud
az login

subscription="<subscriptionId>" # add subscription here

az account set -s $subscription # ...or use 'az login'

For more information, see set active subscription or log in.

Run the script

# Create a Cassandra serverless account, keyspace and table

# Variable block
let "randomIdentifier=$RANDOM*$RANDOM"
location="chinaeast2"
resourceGroup="msdocs-cosmosdb-rg-$randomIdentifier"
tag="serverless-casandra-cosmosdb"
account="msdocs-account-cosmos-$randomIdentifier" #needs to be lower case
keySpace="keyspace1"
table="table1"
maxThroughput=4000 #minimum = 4000

# Create a resource group
echo "Creating $resourceGroup in $location..."
az group create --name $resourceGroup --location "$location" --tags $tag

# Create a Cosmos account for Cassandra API
echo "Creating $account"
az cosmosdb create --name $account --resource-group $resourceGroup --capabilities EnableCassandra EnableServerless --locations regionName="$location" failoverPriority=0 isZoneRedundant=False 

# Create a Cassandra Keyspace
echo "Create $keySpace"
az cosmosdb cassandra keyspace create --account-name $account --resource-group $resourceGroup --name $keySpace

# Define the schema for the table
printf ' 
{
    "columns": [
        {"name": "columna","type": "uuid"},
        {"name": "columnb","type": "int"},
        {"name": "columnc","type": "text"}
    ],
    "partitionKeys": [
        {"name": "columna"}
    ],
    "clusterKeys": [
        { "name": "columnb", "orderBy": "asc" }
    ]
}' > "schema-$randomIdentifier.json"

# Create the Cassandra table
echo "Creating $table"
az cosmosdb cassandra table create --account-name $account --resource-group $resourceGroup --keyspace-name $keySpace --name $table --schema @schema-$randomIdentifier.json

# Clean up temporary schema file
rm -f "schema-$randomIdentifier.json"

Clean up resources

Use the following command to remove the resource group and all resources associated with it using the az group delete command - unless you have an ongoing need for these resources. Some of these resources may take a while to create, as well as to delete.

az group delete --name $resourceGroup

Sample reference

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

Command	Notes
az group create	Creates a resource group in which all resources are stored.
az cosmosdb create	Creates an Azure Cosmos DB account.
az cosmosdb cassandra keyspace create	Creates an Azure Cosmos DB Cassandra keyspace.
az cosmosdb cassandra table create	Creates an Azure Cosmos DB Cassandra table.
az group delete	Deletes a resource group including all nested resources.

Next steps

For more information on the Azure Cosmos DB CLI, see Azure Cosmos DB CLI documentation.