---
layout: "azurerm"
page_title: "Azure Resource Manager: azurerm_availability_set"
sidebar_current: "docs-azurerm-resource-virtualmachine-availability-set"
description: |-
  Create an availability set for virtual machines.
---

# azurerm\_availability\_set

Create an availability set for virtual machines.

## Example Usage

```
resource "azurerm_resource_group" "test" {
    name = "resourceGroup1"
    location = "West US"
}

resource "azurerm_availability_set" "test" {
    name = "acceptanceTestAvailabilitySet1"
    location = "West US"
    resource_group_name = "${azurerm_resource_group.test.name}"
    
    tags {
        environment = "Production"
    }
}
```

## Argument Reference

The following arguments are supported:

* `name` - (Required) Specifies the name of the availability set. Changing this forces a
    new resource to be created.

* `resource_group_name` - (Required) The name of the resource group in which to
    create the availability set.

* `location` - (Required) Specifies the supported Azure location where the resource exists. Changing this forces a new resource to be created.

* `platform_update_domain_count` - (Optional) Specifies the number of update domains that are used. Defaults to 5.

* `platform_fault_domain_count` - (Optional) Specifies the number of fault domains that are used. Defaults to 3.
* `tags` - (Optional) A mapping of tags to assign to the resource. 

## Attributes Reference

The following attributes are exported:

* `id` - The virtual AvailabilitySet ID.