Throughput (RU/s) operations with PowerShell for a database or graph for Azure Cosmos DB - API for Gremlin

Artikkeli
08/22/2024

APPLIES TO: Gremlin

Note

We recommend that you use the Azure Az PowerShell module to interact with Azure. To get started, 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.

Get throughput

# Reference: Az.CosmosDB | https://docs.microsoft.com/powershell/module/az.cosmosdb
# --------------------------------------------------
# Purpose
# Get database or graph throughput
# --------------------------------------------------
# Variables - ***** SUBSTITUTE YOUR VALUES *****
$resourceGroupName = "myResourceGroup" # Resource Group must already exist
$accountName = "myaccount" # Must be all lower case
$databaseName = "myDatabase"
$graphName = "myGraph"
# --------------------------------------------------

Write-Host "Get database shared throughput"
Get-AzCosmosDBGremlinDatabaseThroughput -ResourceGroupName $resourceGroupName `
    -AccountName $accountName -Name $databaseName

Write-Host "Get graph dedicated throughput"
Get-AzCosmosDBGremlinGraphThroughput -ResourceGroupName $resourceGroupName `
    -AccountName $accountName -DatabaseName $databaseName `
    -Name $graphName

Update throughput

# Reference: Az.CosmosDB | https://docs.microsoft.com/powershell/module/az.cosmosdb
# --------------------------------------------------
# Purpose
# Update graph throughput
# --------------------------------------------------
# Variables - ***** SUBSTITUTE YOUR VALUES *****
$resourceGroupName = "myResourceGroup" # Resource Group must already exist
$accountName = "myaccount" # Must be all lower case
$databaseName = "myDatabase"
$graphName = "myGraph"
$newRUs = 500
# --------------------------------------------------

$throughput = Get-AzCosmosDBGremlinGraphThroughput `
    -ResourceGroupName $resourceGroupName `
    -AccountName $accountName -DatabaseName $databaseName `
    -Name $graphName

$currentRUs = $throughput.Throughput
$minimumRUs = $throughput.MinimumThroughput

Write-Host "Current throughput is $currentRUs. Minimum allowed throughput is $minimumRUs."

if ([int]$newRUs -lt [int]$minimumRUs) {
    Write-Host "Requested new throughput of $newRUs is less than minimum allowed throughput of $minimumRUs."
    Write-Host "Using minimum allowed throughput of $minimumRUs instead."
    $newRUs = $minimumRUs
}

if ([int]$newRUs -eq [int]$currentRUs) {
    Write-Host "New throughput is the same as current throughput. No change needed."
}
else {
    Write-Host "Updating throughput to $newRUs."

    Update-AzCosmosDBGremlinGraphThroughput -ResourceGroupName $resourceGroupName `
        -AccountName $accountName -DatabaseName $databaseName `
        -Name $graphName -Throughput $newRUs
}

Migrate throughput

# Reference: Az.CosmosDB | https://docs.microsoft.com/powershell/module/az.cosmosdb
# --------------------------------------------------
# Purpose
# Migrate a database or graph to autoscale or standard (manual) throughput
# --------------------------------------------------
# Variables - ***** SUBSTITUTE YOUR VALUES *****
$resourceGroupName = "myResourceGroup" # Resource Group must already exist
$accountName = "myaccount" # Must be all lower case
$databaseName = "myDatabase"
$graphName = "myGraph"
# --------------------------------------------------

Write-Host "Migrate database with standard throughput to autoscale throughput."
Invoke-AzCosmosDBGremlinDatabaseThroughputMigration -ResourceGroupName $resourceGroupName `
    -AccountName $accountName -Name $databaseName -ThroughputType Autoscale

Write-Host "Migrate database with autoscale throughput to standard throughput."
Invoke-AzCosmosDBGremlinDatabaseThroughputMigration -ResourceGroupName $resourceGroupName `
    -AccountName $accountName -Name $databaseName -ThroughputType Manual

Write-Host "Migrate graph with standard throughput to autoscale throughput."
Invoke-AzCosmosDBGremlinGraphThroughputMigration -ResourceGroupName $resourceGroupName `
    -AccountName $accountName -DatabaseName $databaseName -Name $graphName -ThroughputType Autoscale

Write-Host "Migrate graph with autoscale throughput to standard throughput."
Invoke-AzCosmosDBGremlinGraphThroughputMigration -ResourceGroupName $resourceGroupName `
    -AccountName $accountName -DatabaseName $databaseName -Name $graphName -ThroughputType Manual

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 Cosmos DB
Get-AzCosmosDBGremlinDatabaseThroughput	Gets the throughput value of the API for Gremlin Database.
Get-AzCosmosDBGremlinGraphThroughput	Gets the throughput value of the API for Gremlin Graph.
Update-AzCosmosDBGremlinDatabaseThroughput	Updates the throughput value of the API for Gremlin Database.
Update-AzCosmosDBGremlinGraphThroughput	Updates the throughput value of the API for Gremlin Graph.
Invoke-AzCosmosDBGremlinDatabaseThroughputMigration	Migrate throughput of a API for Gremlin Database.
Invoke-AzCosmosDBGremlinGraphThroughputMigration	Migrate throughput of a API for Gremlin Graph.
Azure Resource Groups
Remove-AzResourceGroup	Deletes a resource group including all nested resources.

Next steps

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

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