Create a consumption based App Service Plan with Powershell

Geeze Louise.

This has been racking me for 3 days. I finally found some help (urls I mention).

It looks like this cannot be accomplished (currently) with New-AzureRmAppServicePlan.

But you can fall back onto the more generic New-AzureRmResource.

The code I finally got to work:

function SafeCreateAppServicePlan(
    [Parameter(Mandatory = $true)]
    [System.String]$location, 
    [Parameter(Mandatory = $true)]
    [System.String]$resourceGroupName,
    [Parameter(Mandatory = $true)]
    [String]$appServicePlanName 
)
{

    Write-Host "SafeCreateAppServicePlan.Parameter:location: $location"
    Write-Host "SafeCreateAppServicePlan.Parameter:resourceGroupName: $resourceGroupName"
    Write-Host "SafeCreateAppServicePlan.Parameter:appServicePlanName: $appServicePlanName"

    $SkuName = "Y1"
    $SkuTier = "Dynamic"
    $WebAppApiVersion = "2015-08-01"

    $fullObject = @{
        location = $location
        sku = @{
            name = $SkuName
            tier = $SkuTier
        }
    }

    Write-Host "Ensuring the $appServicePlanName app service plan exists"
    $plan = Get-AzureRmAppServicePlan -Name $appServicePlanName -ResourceGroupName $resourceGroupName -ErrorAction SilentlyContinue
    if(-not $plan) {
        Write-Host "Creating $appServicePlanName app service plan"
        New-AzureRmResource -ResourceGroupName $resourceGroupName -ResourceType Microsoft.Web/serverfarms -Name $appServicePlanName -IsFullObject -PropertyObject $fullObject -ApiVersion $WebAppApiVersion -Force
    }
    else {
        Write-Host "$appServicePlanName app service plan already exists"   
    }

}

The help I got:

https://github.com/davidebbo/AzureWebsitesSamples/blob/master/PowerShell/HelperFunctions.ps1

(search the url above for "SkuName" to find the magic lines.

Please note, this is only part of the overall equation to deploy the INFRASTRUCTURE for azure functions (if you are not using arm templates). When I say the infrastructure, the code below does not deploy the azure-functions themselves, but the below will setup the infrastructure needed to do this.

This guy does a good job of explaining:

https://clouddeveloper.space/2017/10/26/deploy-azure-function-using-powershell/

"clouddeveloper" basically says that for consumption plan azure functions, you need to have a storage account. This lines up with the "info" button you get when you manually add a Function-App via the azure portal.

"A storage account that supports Blob, Queue, and Table Storage is required. When using a Consumption plan function definitions are stored in File Storage."

enter image description here

So my full code, that will create an App-Service-Plan, create a Storage Account, create an App-Service (that is azure functions/function app friendly) and match up the storage-account to the app-service is:

function SafeCreateAppServicePlan(
    [Parameter(Mandatory = $true)]
    [System.String]$location, 
    [Parameter(Mandatory = $true)]
    [System.String]$resourceGroupName,
    [Parameter(Mandatory = $true)]
    [String]$appServicePlanName 
)
{

    Write-Host "SafeCreateAppServicePlan.Parameter:location: $location"
    Write-Host "SafeCreateAppServicePlan.Parameter:resourceGroupName: $resourceGroupName"
    Write-Host "SafeCreateAppServicePlan.Parameter:appServicePlanName: $appServicePlanName"

    $SkuName = "Y1"
    $SkuTier = "Dynamic"
    $WebAppApiVersion = "2015-08-01"

    $fullObject = @{
        location = $location
        sku = @{
            name = $SkuName
            tier = $SkuTier
        }
    }

    Write-Host "Ensuring the $appServicePlanName app service plan exists"
    $plan = Get-AzureRmAppServicePlan -Name $appServicePlanName -ResourceGroupName $resourceGroupName -ErrorAction SilentlyContinue
    if(-not $plan) {
        Write-Host "Creating $appServicePlanName app service plan"
        New-AzureRmResource -ResourceGroupName $resourceGroupName -ResourceType Microsoft.Web/serverfarms -Name $appServicePlanName -IsFullObject -PropertyObject $fullObject -ApiVersion $WebAppApiVersion -Force
    }
    else {
        Write-Host "$appServicePlanName app service plan already exists"   
    }

}

function SafeCreateAzureFunctionAppService(
    [Parameter(Mandatory = $true)]
    [System.String]$location, 
    [Parameter(Mandatory = $true)]
    [System.String]$resourceGroupName,
    [Parameter(Mandatory = $true)]
    [String]$appServicePlanName,
    [Parameter(Mandatory = $true)]
    [String]$functionAppName        
)
{

    Write-Host "SafeCreateAzureFunctionAppService.Parameter:location: $location"
    Write-Host "SafeCreateAzureFunctionAppService.Parameter:resourceGroupName: $resourceGroupName"
    Write-Host "SafeCreateAzureFunctionAppService.Parameter:appServicePlanName: $appServicePlanName"
    Write-Host "SafeCreateAzureFunctionAppService.Parameter:functionAppName: $functionAppName"

    [String]$planId = ''

    $plan = Get-AzureRmAppServicePlan -Name $appServicePlanName -ResourceGroupName $resourceGroupName -ErrorAction SilentlyContinue
    if(-not $plan) {
        throw [System.ArgumentOutOfRangeException] "Missing App Service Plan.  (ResourceGroupName='$resourceGroupName', AppServicePlan.Name = '$appServicePlanName')"
    }
    else {
        Write-Host "START AzureRmAppServicePlan Properties"   
        $plan.PSObject.Properties   
        Write-Host "END AzureRmAppServicePlan Properties"   

        #get the planId, so that can be used as the backing-app-service-plan for this AppService
        [String]$planId = $plan.Id
    }

    #wire up the necessary properties for this AppService
    $props = @{
        ServerFarmId = $planId
        }


    $functionAppResource = Get-AzureRmResource | Where-Object { $_.ResourceName -eq $functionAppName -And $_.ResourceType -eq 'Microsoft.Web/Sites' }

    if ($functionAppResource -eq $null)
    {
        New-AzureRmResource -ResourceType 'Microsoft.Web/Sites' -ResourceName $functionAppName -kind 'functionapp' -Location $location -ResourceGroupName $resourceGroupName -Properties $props -force
    }    

}


function SafeCreateStorageAccountToBackConsumptionAzureFunctions(
    [Parameter(Mandatory = $true)]
    [System.String]$location, 
    [Parameter(Mandatory = $true)]
    [System.String]$resourceGroupName,
    [Parameter(Mandatory = $true)]
    [String]$storageAccountName   
)
{

    Write-Host "SafeCreateStorageAccount.Parameter:location: $location"
    Write-Host "SafeCreateStorageAccount.Parameter:resourceGroupName: $resourceGroupName"
    Write-Host "SafeCreateStorageAccount.Parameter:storageAccountName: $storageAccountName"

    $azureRmStorageAccountGetCheck = Get-AzureRmStorageAccount -ResourceGroupName $resourceGroupName -AccountName $storageAccountName -ErrorAction SilentlyContinue

    if(-not $azureRmStorageAccountGetCheck) 
    {
        New-AzureRmStorageAccount -ResourceGroupName $resourceGroupName -AccountName $storageAccountName -Location $location -SkuName 'Standard_LRS'
    }
    else 
    {
        Write-Host "$storageAccountName storage account already exists"
    }    
}



function MatchStorageSettingsToAppService(
    [Parameter(Mandatory = $true)]
    [System.String]$location, 
    [Parameter(Mandatory = $true)]
    [System.String]$resourceGroupName,
    [Parameter(Mandatory = $true)]
    [String]$functionAppName,
    [Parameter(Mandatory = $true)]
    [String]$storageAccountName       
)
{

    Write-Host "MatchStorageSettingsToAppService.Parameter:location: $location"
    Write-Host "MatchStorageSettingsToAppService.Parameter:resourceGroupName: $resourceGroupName"
    Write-Host "MatchStorageSettingsToAppService.Parameter:functionAppName: $functionAppName"    
    Write-Host "MatchStorageSettingsToAppService.Parameter:storageAccountName: $storageAccountName"

    $keys = Get-AzureRmStorageAccountKey -ResourceGroupName $resourceGroupName -AccountName $storageAccountName

    $accountKey = $keys | Where-Object { $_.KeyName -eq "Key1" } | Select Value

    $storageAccountConnectionString = 'DefaultEndpointsProtocol=https;AccountName=' + $storageAccountName + ';AccountKey=' + $accountKey.Value

    $AppSettings = @{}

    $AppSettings = @{'AzureWebJobsDashboard' = $storageAccountConnectionString;

    'AzureWebJobsStorage' = $storageAccountConnectionString;

    'FUNCTIONS_EXTENSION_VERSION' = '~1';

    'WEBSITE_CONTENTAZUREFILECONNECTIONSTRING' = $storageAccountConnectionString;

    'WEBSITE_CONTENTSHARE' = $storageAccountName;

}

    Set-AzureRMWebApp -Name $functionAppName -ResourceGroupName $resourceGroupName -AppSettings $AppSettings

}

I got a few hints from this ARM template as well:

https://github.com/Azure/azure-quickstart-templates/blob/master/101-function-app-create-dynamic/azuredeploy.json