Use PowerShell to monitor and scale a single SQL database

This PowerShell script example monitors the performance metrics of a database, scales it to a higher compute size, and creates an alert rule on one of the performance metrics.

If you don't have an Azure subscription, create a free account before you begin.

Note

This article has been updated to use the new Azure PowerShell Az module. You can still use the AzureRM module, which will continue to receive bug fixes until at least December 2020. To learn more about the new Az module and AzureRM compatibility, see Introducing the new Azure PowerShell Az module. For Az module installation instructions, see Install Azure PowerShell.

Open Azure Cloud Shell

Azure Cloud Shell is an interactive shell environment hosted in Azure and used through your browser. Azure Cloud Shell allows you to use either bash or PowerShell shells to run a variety of tools to work with Azure services. Azure Cloud Shell comes pre-installed with the commands to allow you to run the content of this article without having to install anything on your local environment.

To run any code contained in this article on Azure Cloud Shell, open a Cloud Shell session, use the Copy button on a code block to copy the code, and paste it into the Cloud Shell session with Ctrl+Shift+V on Windows and Linux, or Cmd+Shift+V on macOS. Pasted text is not automatically executed, so press Enter to run code.

You can launch Azure Cloud Shell with:

Option Example/Link
Select Try It in the upper-right corner of a code block. This doesn't automatically copy text to Cloud Shell. Example of Try It for Azure Cloud Shell
Open Azure Cloud Shell in your browser.
Select the Cloud Shell button on the menu in the upper-right corner of the Azure portal. Cloud Shell button in the Azure portal

If you choose to install and use the PowerShell locally, this tutorial requires AZ PowerShell 1.4.0 or later. If you need to upgrade, see Install Azure PowerShell module. If you are running PowerShell locally, you also need to run Connect-AzAccount to create a connection with Azure.

Sample script

# Connect-AzAccount
# The SubscriptionId in which to create these objects
$SubscriptionId = ''
# Set the resource group name and location for your server
$resourceGroupName = "myResourceGroup-$(Get-Random)"
$location = "westus2"
# Set an admin login and password for your server
$adminSqlLogin = "SqlAdmin"
$password = "ChangeYourAdminPassword1"
# Set server name - the logical server name has to be unique in the system
$serverName = "server-$(Get-Random)"
# The sample database name
$databaseName = "mySampleDatabase"
# The ip address range that you want to allow to access your server
$startIp = "0.0.0.0"
$endIp = "0.0.0.0"

# Set subscription 
Set-AzContext -SubscriptionId $subscriptionId 

# Create a resource group
$resourceGroup = New-AzResourceGroup -Name $resourceGroupName -Location $location

# Create a server with a system wide unique server name
$server = New-AzSqlServer -ResourceGroupName $resourceGroupName `
    -ServerName $serverName `
    -Location $location `
    -SqlAdministratorCredentials $(New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList $adminSqlLogin, $(ConvertTo-SecureString -String $password -AsPlainText -Force))

# Create a server firewall rule that allows access from the specified IP range
$serverFirewallRule = New-AzSqlServerFirewallRule -ResourceGroupName $resourceGroupName `
    -ServerName $serverName `
    -FirewallRuleName "AllowedIPs" -StartIpAddress $startIp -EndIpAddress $endIp

# Create a blank database with an S0 performance level
$database = New-AzSqlDatabase  -ResourceGroupName $resourceGroupName `
    -ServerName $serverName `
    -DatabaseName $databaseName `
    -RequestedServiceObjectiveName "S0" `
    -SampleName "AdventureWorksLT"

# Monitor the DTU consumption on the imported database in 5 minute intervals
$MonitorParameters = @{
  ResourceId = "/subscriptions/$($(Get-AzContext).Subscription.Id)/resourceGroups/$resourceGroupName/providers/Microsoft.Sql/servers/$serverName/databases/$databaseName"
  TimeGrain = [TimeSpan]::Parse("00:05:00")
  MetricNames = "dtu_consumption_percent"
}
(Get-AzMetric @MonitorParameters -DetailedOutput).MetricValues

# Scale the database performance to Standard S1
$database = Set-AzSqlDatabase -ResourceGroupName $resourceGroupName `
    -ServerName $servername `
    -DatabaseName $databasename `
    -Edition "Standard" `
    -RequestedServiceObjectiveName "S1"

# Set an alert rule to automatically monitor DTU in the future
Add-AzMetricAlertRule -ResourceGroup $resourceGroupName `
    -Name "MySampleAlertRule" `
    -Location $location `
    -TargetResourceId "/subscriptions/$($(Get-AzContext).Subscription.Id)/resourceGroups/$resourceGroupName/providers/Microsoft.Sql/servers/$serverName/databases/$databaseName" `
    -MetricName "dtu_consumption_percent" `
    -Operator "GreaterThan" `
    -Threshold 90 `
    -WindowSize $([TimeSpan]::Parse("00:05:00")) `
    -TimeAggregationOperator "Average" `
    -Action $(New-AzAlertRuleEmail -SendToServiceOwner)

# Clean up deployment 
# Remove-AzResourceGroup -ResourceGroupName $resourceGroupName

Note

For a full list of metrics, see metrics supported.

Tip

Use Get-AzSqlDatabaseActivity to get the status of database operations and use Stop-AzSqlDatabaseActivity to cancel a database update operation.

Clean up deployment

Use the following command to remove the resource group and all resources associated with it.

Remove-AzResourceGroup -ResourceGroupName $resourcegroupname

Script explanation

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

Command Notes
New-AzResourceGroup Creates a resource group in which all resources are stored.
New-AzSqlServer Creates a SQL Database server that hosts a single database or elastic pool.
Get-AzMetric Shows the size usage information for the database.
Set-AzSqlDatabase Updates database properties or moves a database into, out of, or between elastic pools.
Add-AzMetricAlertRule Sets an alert rule to automatically monitor DTUs in the future.
Remove-AzResourceGroup Deletes a resource group including all nested resources.

Next steps

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

Additional SQL Database PowerShell script samples can be found in the Azure SQL Database PowerShell scripts.