https://github.com/libre-devops/terraform-azurerm-reverse-private-dns-zone

A module used to deploy a reverse private DNS zone
https://github.com/libre-devops/terraform-azurerm-reverse-private-dns-zone

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A module used to deploy a reverse private DNS zone

Host: GitHub
URL: https://github.com/libre-devops/terraform-azurerm-reverse-private-dns-zone
Owner: libre-devops
License: mit
Created: 2024-09-04T12:20:06.000Z (8 months ago)
Default Branch: main
Last Pushed: 2024-09-04T14:14:14.000Z (8 months ago)
Last Synced: 2024-12-26T16:11:48.489Z (4 months ago)
Language: PowerShell
Size: 25.4 KB
Stars: 0
Watchers: 0
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE

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        ```hcl

locals {

  #The below locals convert an IP address range into separate elements.  Take 10.0.2.0/24 for example:

  first_octet = var.create_reverse_dns_zone == true && var.address_range != null ? element(split(".", element(var.address_range, 0)), 0) : null

  # Gets the first octet of range, so for example, 10

  second_octet = var.create_reverse_dns_zone == true && var.address_range != null ? element(split(".", element(var.address_range, 0)), 1) : null

  # Gets the second octet of range, so for example, 0

  third_octet = var.create_reverse_dns_zone == true && var.address_range != null ? element(split(".", element(var.address_range, 0)), 2) : null

  # Gets the third octet of range, so for example, 2

  fourth_element = var.create_reverse_dns_zone == true && var.address_range != null ? element(split(".", element(var.address_range, 0)), 3) : null

  # Gets the forth element of range, so for example, 0/24

  fourth_octet = var.create_reverse_dns_zone == true && var.address_range != null && local.fourth_element != null ? element(split("/", local.fourth_element), 0) : null

  # Gets the fourth element of range, so for example, 0

  cidr_range = var.create_reverse_dns_zone == true && var.address_range != null && local.fourth_element != null ? element(split("/", local.fourth_element), 1) : null

  # Gets the the cidr portion of the range, so for example, 24

  # Reconstructs the name using above elements to create, for example, 24-0.2.0.10.in-addr.arpa

  reverse_zone_name = var.create_reverse_dns_zone == true && var.address_range != null ? format("%d-%d.%d.%d.%d.in-addr.arpa", local.cidr_range, local.fourth_octet, local.third_octet, local.second_octet, local.first_octet) : null

}

resource "azurerm_private_dns_zone" "reverse_dns_zone" {

  for_each = var.create_reverse_dns_zone == true && var.address_range != null ? toset(var.address_range) : []

  name                = local.reverse_zone_name

  resource_group_name = var.rg_name

  tags                = var.tags

}

resource "azurerm_private_dns_zone_virtual_network_link" "reverse_dns_zone_link" {

  for_each              = try(var.link_to_vnet, true) == true && var.create_reverse_dns_zone == true && var.address_range != null ? toset(var.address_range) : []

  name                  = var.vnet_link_name == null ? "${lower(replace(azurerm_private_dns_zone.reverse_dns_zone[each.key].name, ".", "-"))}-link-to-${local.vnet_name}" : try(var.vnet_link_name, null)

  resource_group_name   = try(var.rg_name, null)

  private_dns_zone_name = azurerm_private_dns_zone.reverse_dns_zone[each.key].name

  virtual_network_id    = try(var.vnet_id, null)

  tags                  = try(var.tags, null)

}

resource "azurerm_private_dns_zone_virtual_network_link" "reverse_dns_zone_link_hub" {

  for_each              = try(var.link_to_vnet, true) == true && var.create_reverse_dns_zone == true && var.attempt_reverse_dns_dns_zone_link_to_hub == true && var.address_range != null ? toset(var.address_range) : []

  name                  = var.vnet_link_name == null ? "${lower(replace(azurerm_private_dns_zone.reverse_dns_zone[each.key].name, ".", "-"))}-link-to-${local.hub_vnet_name}" : try(var.vnet_link_name, null)

  resource_group_name   = try(var.rg_name, null)

  private_dns_zone_name = azurerm_private_dns_zone.reverse_dns_zone[each.key].name

  virtual_network_id    = try(var.hub_vnet_id, null)

  tags                  = try(var.tags, null)

}

```

## Requirements

No requirements.

## Providers

| Name | Version |

|------|---------|

|  [azurerm](#provider\_azurerm) | n/a |

## Modules

No modules.

## Resources

| Name | Type |

|------|------|

| [azurerm_private_dns_zone.reverse_dns_zone](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/private_dns_zone) | resource |

| [azurerm_private_dns_zone_virtual_network_link.reverse_dns_zone_link](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/private_dns_zone_virtual_network_link) | resource |

| [azurerm_private_dns_zone_virtual_network_link.reverse_dns_zone_link_hub](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/private_dns_zone_virtual_network_link) | resource |

## Inputs

| Name | Description | Type | Default | Required |

|------|-------------|------|---------|:--------:|

|  [address\_range](#input\_address\_range) | If creating a reverse DNS zone, provide this input with a full cidr range, e.g. 10.0.0.0/16, as it will be split and made if the create\_reverse\_dns\_zone variable is set to true | `list(string)` | `null` | no |

|  [attempt\_reverse\_dns\_dns\_zone\_link\_to\_hub](#input\_attempt\_reverse\_dns\_dns\_zone\_link\_to\_hub) | Whether the DNS zone being made should be linked to the hub | `bool` | `false` | no |

|  [create\_reverse\_dns\_zone](#input\_create\_reverse\_dns\_zone) | Whether or not to create a reverse DNS zone, defaults to false | `bool` | `false` | no |

|  [hub\_vnet\_id](#input\_hub\_vnet\_id) | The ID of the hub vnet | `string` | `null` | no |

|  [link\_to\_vnet](#input\_link\_to\_vnet) | Whether or not the zone should be linked to the vnet, defaults to false | `bool` | `false` | no |

|  [location](#input\_location) | The location for this resource to be put in | `string` | n/a | yes |

|  [rg\_name](#input\_rg\_name) | The name of the resource group, this module does not create a resource group, it is expecting the value of a resource group already exists | `string` | n/a | yes |

|  [tags](#input\_tags) | A map of the tags to use on the resources that are deployed with this module. | `map(string)` | n/a | yes |

|  [vnet\_id](#input\_vnet\_id) | The vnet id the dns zones should be linked to | `string` | `null` | no |

|  [vnet\_link\_name](#input\_vnet\_link\_name) | The name of the vnet link if one is made, defaults to null | `string` | `null` | no |

## Outputs

| Name | Description |

|------|-------------|

|  [dns\_number\_of\_record\_sets](#output\_dns\_number\_of\_record\_sets) | The max number of virtual network links with registration |

|  [dns\_zone\_id](#output\_dns\_zone\_id) | The dns zone ids |

|  [dns\_zone\_max\_number\_of\_record\_sets](#output\_dns\_zone\_max\_number\_of\_record\_sets) | The max number of record sets |

|  [dns\_zone\_max\_number\_of\_virtual\_network\_links](#output\_dns\_zone\_max\_number\_of\_virtual\_network\_links) | The dns max number of virtual network links |

|  [dns\_zone\_max\_number\_of\_virtual\_network\_links\_with\_registration](#output\_dns\_zone\_max\_number\_of\_virtual\_network\_links\_with\_registration) | The max number of virtual network links with registration |

|  [dns\_zone\_name](#output\_dns\_zone\_name) | The dns zone name |

|  [vnet\_link\_id](#output\_vnet\_link\_id) | The vnet link ids |

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