Sample - Enforce tag and its value

This policy requires a specified tag name and value. You specify the tag name and value to enforce.

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

Sample template

JSON

{
   "properties": {
      "displayName": "Require tag and its value",
      "policyType": "BuiltIn",
      "mode": "Indexed",
      "description": "Enforces a required tag and its value. Does not apply to resource groups.",
      "parameters": {
         "tagName": {
            "type": "String",
            "metadata": {
               "description": "Name of the tag, such as costCenter"
            }
         },
         "tagValue": {
            "type": "String",
            "metadata": {
               "description": "Value of the tag, such as headquarter"
            }
         }
      },
      "policyRule": {
         "if": {
            "not": {
               "field": "[concat('tags[', parameters('tagName'), ']')]",
               "equals": "[parameters('tagValue')]"
            }
         },
         "then": {
            "effect": "deny"
         }
      }
   },
   "id": "/providers/Microsoft.Authorization/policyDefinitions/1e30110a-5ceb-460c-a204-c1c3969c6d62",
   "type": "Microsoft.Authorization/policyDefinitions",
   "name": "1e30110a-5ceb-460c-a204-c1c3969c6d62"
}

You can deploy this template using the Azure portal, with PowerShell or with the Azure CLI.

Deploy with the portal

Deploy with PowerShell

This sample requires Azure PowerShell. Run Get-Module -ListAvailable Az to find the version. If you need to install or upgrade, see Install Azure PowerShell module.

Run the Connect-AzAccount cmdlet to connect to Azure.

Azure PowerShell

$definition = New-AzPolicyDefinition -Name "enforce-tag-value" -DisplayName "Enforce tag and its value" -description "Enforces a required tag and its value." -Policy 'https://raw.githubusercontent.com/Azure/azure-policy/master/samples/built-in-policy/enforce-tag-value/azurepolicy.rules.json' -Parameter 'https://raw.githubusercontent.com/Azure/azure-policy/master/samples/built-in-policy/enforce-tag-value/azurepolicy.parameters.json' -Mode All
$definition
$assignment = New-AzPolicyAssignment -Name <assignmentname> -Scope <scope>  -tagName <tagName> -tagValue <tagValue> -PolicyDefinition $definition
$assignment

Clean up PowerShell deployment

Run the following command to remove the resource group, VM, and all related resources.

Azure PowerShell

Remove-AzResourceGroup -Name myResourceGroup

Deploy with Azure CLI

To run this sample, install the latest version of the Azure CLI. To start, run az login to create a connection with Azure.

Samples for the Azure CLI are written for the bash shell. To run this sample in Windows PowerShell or Command Prompt, you may need to change elements of the script.

Azure CLI

az policy definition create --name 'enforce-tag-value' --display-name 'Enforce tag and its value' --description 'Enforces a required tag and its value.' --rules 'https://raw.githubusercontent.com/Azure/azure-policy/master/samples/built-in-policy/enforce-tag-value/azurepolicy.rules.json' --params 'https://raw.githubusercontent.com/Azure/azure-policy/master/samples/built-in-policy/enforce-tag-value/azurepolicy.parameters.json' --mode All

az policy assignment create --name <assignmentname> --scope <scope> --policy "enforce-tag-value"

Clean up Azure CLI deployment

Run the following command to remove the resource group, VM, and all related resources.

Azure CLI

az group delete --name myResourceGroup --yes