Powershell Add Tags To Resources

Powershell Add Tags To Resources

We'll be using  Powershell 7 Preview  that has AZ module to TAG resources

also,  good to read the following article over MSDN Installing PowerShell Core on Windows

 Powershell 7 Preview 

Azure PowerShell Az module

Az offers shorter commands, improved stability, and cross-platform support. Az also has feature equality with AzureRM, which provides a smooth migration path. Windows and PowerShell Core 6.x and later on all supported platforms - including Windows, macOS, and Linux. 

Azure Tag All Resources in a Resource Group

Use the following script to read existing tags for the resource group and apply it to all its resources.

• It will keep existing tags on resources that aren't duplicates
• If Resource Tag Key has empty value  then it will replace it with resource group's same Tag key value if exists

# get resource group object

$group = Get-AzResourceGroup -Name TargetedResourceGroupName

#check if group have tags

if ($null -ne $group.Tags) {

    #get all resources from group

    $resources = Get-AzResource -ResourceGroupName $group.ResourceGroupName

  

    foreach ($r in $resources)

    {

       $resourcetags = (Get-AzResource -ResourceId $r.ResourceId).Tags

       # print resource name

        write-host $r.Name

       # print new line

        write-host

        if ($resourcetags)

        {

            foreach ($key in $group.Tags.Keys)

            {

                if (-not($resourcetags.ContainsKey($key)))

                {

                    $resourcetags.Add($key, $group.Tags[$key])

                }

               

                if(!$resourcetags[$key])

                {

                    $resourcetags[$key]=$group.Tags[$key]                   

                }

            }

           # write-host $resourcetags

            Set-AzResource -Tag $resourcetags -ResourceId $r.ResourceId -Force

        }

        else

        {

           Set-AzResource -Tag $group.Tags -ResourceId $r.ResourceId -Force

        }

    }

}