TSI Mini-Hack

CostTaggingRunbook.ps1

# Retrieve automation variables
$costTagName = Get-AutomationVariable -Name 'tagName' -ErrorAction SilentlyContinue
$costTagValue = Get-AutomationVariable -Name 'tagValue' -ErrorAction SilentlyContinue

# Login to Azure
$RunAsConnection = Get-AutomationConnection -Name "AzureRunAsConnection"
        Write-Verbose "Logging in to Azure..." -Verbose
        Add-AzAccount -ServicePrincipal -TenantId $RunAsConnection.TenantId -ApplicationId $RunAsConnection.ApplicationId -CertificateThumbprint $RunAsConnection.CertificateThumbprint
        Select-AzSubscription -SubscriptionId $RunAsConnection.SubscriptionID

# Retrieve a collection of all RGs in a subscription
$resourceGroups=Get-AzResourceGroup

Write-Output "Number of RGs: $resourceGroups.Count"

# Main loop
ForEach ($resourceGroup in $resourceGroups) {

    $tags = (Get-AzResourceGroup -Name $resourceGroup).Tags
    $tags.Add($costTagName, $costTagValue)
    Write-Output "Adding cost tag to resource group: $resourceGroup.Name"
    Set-AzResourceGroup -Tag $tags -Name $resourceGroup

}