DNS Zone

Overview

The DNS Zone module contains two types of builders - dnsZone, used to create DNS Zones, and ___Record (like cnameRecord, aRecord, ..), used to create DNS Records sets. It supports most record types (except CAA) and has specific builders for every record type.

• DNS Zone (Microsoft.Network/dnsZones)
• A Record (Microsoft.Network/dnsZones/A)
• AAAA Record (Microsoft.Network/dnsZones/AAAA)
• CNAME Record (Microsoft.Network/dnsZones/CNAME)
• TXT Record (Microsoft.Network/dnsZones/TXT)
• MX Record (Microsoft.Network/dnsZones/MX)
• NS Record (Microsoft.Network/dnsZones/NS)
• PTR Record (Microsoft.Network/dnsZones/PTR)
• SOA Record (Microsoft.Network/dnsZones/SOA)
• SRV Record (Microsoft.Network/dnsZones/SRV)
• Private Zone Virtual Network Link (Microsoft.Network/privateDnsZones/virtualNetworkLinks)

SOA records

You can only have one SOA record and it is always created alongside a DNS zone, whether you specify it or not.

You can use the builder provided by Farmer to edit any of its properties. You should not, however, edit the host as this is set automatically by Azure.

Ideally, it just wouldn’t be exposed, however contrary to the official documentation Azure rejects the ARM record if it is absent. For this reason, if you wish to use the SOA builder it is recommended to first deploy your DNS Zone without it, copy the generated SOA host from the portal and then finally paste it into the Farmer builder’s host parameter.

NS Records

An NS record is automatically added to every DNS zone at the apex (@) containing the name of the Azure DNS servers assigned to the zone.

You can modify certain properties of it, but not others.

If you wish to create a new NS record set, you must give it a name field.

TODO

The following items are currently unsupported:

• CAA records
• Virtual network support for Private Zones
• Tags

DNS Zone Builder Keywords

Each Record type has its own custom builder. All builders share the following common keywords:

In addition, each record builder has its own custom keywords:

A Record Builder Keywords

AAAA Record Builder Keywords

CNAME Record Builder Keywords

TXT Record Builder Keywords

MX Record Builder Keywords

NS Record Builder Keywords

PTR Record Builder Keywords

SRV Record Builder Keywords

SOA Record Builder Keywords

Private DNS Zone Virtual Network Link Keywords

Configuration Members

Example

#r "nuget: Farmer"

open Farmer
open Farmer.Builders

let dns = dnsZone {
    name "farmer.com"
    zone_type Dns.Public
    add_records [
        cnameRecord {
            name "www2"
            ttl 3600
            cname "farmer.github.com"
        }
        aRecord {
            name "aName"
            ttl 7200
            add_ipv4_addresses [ "192.168.0.1"; "192.168.0.2" ]
        }
        aaaaRecord {
            name "aaaaName"
            ttl 7200
            add_ipv6_addresses [ "2001:0db8:85a3:0000:0000:8a2e:0370:7334" ]
        }
        txtRecord {
            name "txtName"
            ttl 3600
            add_values [ "v=spf1 include:spf.protection.outlook.com -all" ]
        }
        mxRecord {
            name "mxName"
            ttl 7200
            add_values [
                0, "farmer-com.mail.protection.outlook.com";
                1, "farmer2-com.mail.protection.outlook.com";
            ]
        }
        soaRecord {
            name "soaName"
            host "ns1-09.azure-dns.com."
            ttl 3600
            email "test.microsoft.com"
            serial_number 1L
            minimum_ttl 300L
            refresh_time 3600L
            retry_time 300L
            expire_time 2419200L
        }
        srvRecord {
            name "_sip._tcp.name"
            ttl 3600
            add_values [
                { Priority = Some 100
                Weight = Some 1
                Port = Some 5061
                Target = Some "farmer.online.com."}
            ]
        }
    ]
}

let deployment = arm {
    location Location.NorthEurope
    add_resource dns
}

deployment
|> Writer.quickWrite "dns-example"