使用 Azure CLI 更新 Cassandra 密钥空间和表的 RU/秒Update RU/s for a Cassandra keyspace and table using Azure CLI

备注

在 Azure China 中使用 Azure CLI 2.0 之前,请首先运行 az cloud set -n AzureChinaCloud 更改云环境。Before you can use Azure CLI 2.0 in Azure China, please run az cloud set -n AzureChinaCloud first to change the cloud environment. 如果要切换回全局 Azure,请再次运行 az cloud set -n AzureCloudIf you want to switch back to Global Azure, run az cloud set -n AzureCloud again.

选择在本地安装并使用 CLI 时,本主题要求运行 Azure CLI 2.9.1 或更高版本。When you choose to install and use the CLI locally, this topic requires that you are running the Azure CLI version 2.9.1 or later. 运行 az --version 即可查找版本。Run az --version to find the version. 如果需要进行安装或升级,请参阅安装 Azure CLIIf you need to install or upgrade, see Install Azure CLI.

示例脚本Sample script

此脚本创建一个具有共享吞吐量的 Cassandra 密钥空间和一个具有专用吞吐量的 Cassandra 表,并更新该密钥空间和该表的吞吐量。This script creates a Cassandra keyspace with shared throughput and a Cassandra table with dedicated throughput, then updates the throughput for both the keyspace and table.

#!/bin/bash

# Sign in the Azure China Cloud
az cloud set -n AzureChinaCloud
az login

# Throughput operations for a Cassandra keyspace and table

# Generate a unique 10 character alphanumeric string to ensure unique resource names
uniqueId=$(env LC_CTYPE=C tr -dc 'a-z0-9' < /dev/urandom | fold -w 10 | head -n 1)

# Variables for Cassandra API resources
resourceGroupName="Group-$uniqueId"
location='chinanorth2'
accountName="cosmos-$uniqueId" #needs to be lower case
keySpaceName='keyspace1'
tableName='table1'
originalThroughput=400
updateThroughput=500

# Create a resource group, Cosmos account, keyspace and table
az group create -n $resourceGroupName -l $location
az cosmosdb create -n $accountName -g $resourceGroupName --capabilities EnableCassandra
az cosmosdb cassandra keyspace create -a $accountName -g $resourceGroupName -n $keySpaceName --throughput $originalThroughput

# Define the schema for the table and create the table
schema=$(cat << EOF 
{
    "columns": [
        {"name": "columnA","type": "uuid"}, 
        {"name": "columnB","type": "text"}
    ],
    "partitionKeys": [{"name": "columnA"}]
} 
EOF )
echo "$schema" > "schema-$uniqueId.json"
az cosmosdb cassandra table create -a $accountName -g $resourceGroupName -k $keySpaceName -n $tableName --throughput $originalThroughput --schema @schema-$uniqueId.json
rm -f "schema-$uniqueId.json"

# Throughput operations for Cassandra API keyspace
# Read the current throughput
# Read the minimum throughput
# Make sure the updated throughput is not less than the minimum
# Update the throughput

read -p 'Press any key to get current provisioned Keyspace throughput'

az cosmosdb cassandra keyspace throughput show \
    -a $accountName \
    -g $resourceGroupName \
    -n $keySpaceName \
    --query resource.throughput \
    -o tsv

read -p 'Press any key to get minimum allowable Keyspace throughput'

minimumThroughput=$(az cosmosdb cassandra keyspace throughput show \
    -a $accountName \
    -g $resourceGroupName \
    -n $keySpaceName \
    --query resource.minimumThroughput \
    -o tsv)

echo $minimumThroughput

# Make sure the updated throughput is not less than the minimum allowed throughput
if [ $updateThroughput -lt $minimumThroughput ]; then
    updateThroughput=$minimumThroughput
fi

read -p 'Press any key to update Keyspace throughput'

az cosmosdb cassandra keyspace throughput update \
    -a $accountName \
    -g $resourceGroupName \
    -n $keySpaceName \
    --throughput $updateThroughput

# Throughput operations for Cassandra API table
# Read the current throughput
# Read the minimum throughput
# Make sure the updated throughput is not less than the minimum
# Update the throughput

read -p 'Press any key to get current provisioned Table throughput'

az cosmosdb cassandra table throughput show \
    -a $accountName \
    -g $resourceGroupName \
    -k $keySpaceName \
    -n $tableName \
    --query resource.throughput \
    -o tsv

read -p 'Press any key to get minimum allowable Table throughput'

minimumThroughput=$(az cosmosdb cassandra table throughput show \
    -a $accountName \
    -g $resourceGroupName \
    -k $keySpaceName \
    -n $tableName \
    --query resource.minimumThroughput \
    -o tsv)

echo $minimumThroughput

# Make sure the updated throughput is not less than the minimum allowed throughput
if [ $updateThroughput -lt $minimumThroughput ]; then
    updateThroughput=$minimumThroughput
fi

read -p 'Press any key to update Table throughput'

az cosmosdb cassandra table throughput update \
    -a $accountName \
    -g $resourceGroupName \
    -k $keySpaceName \
    -n $tableName \
    --throughput $updateThroughput

清理部署Clean up deployment

运行脚本示例后,可以使用以下命令删除资源组以及与其关联的所有资源。After the script sample has been run, the following command can be used to remove the resource group and all resources associated with it.

az group delete --name $resourceGroupName

脚本说明Script explanation

此脚本使用以下命令。This script uses the following commands. 表中的每条命令均链接到特定于命令的文档。Each command in the table links to command specific documentation.

CommandCommand 说明Notes
az group createaz group create 创建用于存储所有资源的资源组。Creates a resource group in which all resources are stored.
az cosmosdb createaz cosmosdb create 创建 Azure Cosmos DB 帐户。Creates an Azure Cosmos DB account.
az cosmosdb cassandra keyspace createaz cosmosdb cassandra keyspace create 创建 Azure Cosmos Cassandra 密钥空间。Creates an Azure Cosmos Cassandra keyspace.
az cosmosdb cassandra table createaz cosmosdb cassandra table create 创建 Azure Cosmos Cassandra 表。Creates an Azure Cosmos Cassandra table.
az cosmosdb cassandra keyspace throughput updateaz cosmosdb cassandra keyspace throughput update 更新 Azure Cosmos Cassandra 密钥空间的 RU/秒。Update RU/s for an Azure Cosmos Cassandra keyspace.
az cosmosdb cassandra table throughput updateaz cosmosdb cassandra table throughput update 更新 Azure Cosmos Cassandra 表的 RU/秒。Update RU/s for an Azure Cosmos Cassandra table.
az group deleteaz group delete 删除资源组,包括所有嵌套的资源。Deletes a resource group including all nested resources.

后续步骤Next steps

有关 Azure Cosmos DB CLI 的详细信息,请参阅 Azure Cosmos DB CLI 文档For more information on the Azure Cosmos DB CLI, see Azure Cosmos DB CLI documentation.

可以在 Azure Cosmos DB CLI GitHub 存储库中找到所有 Azure Cosmos DB CLI 脚本示例。All Azure Cosmos DB CLI script samples can be found in the Azure Cosmos DB CLI GitHub Repository.