kea/doc/examples/ddns/sample1.json

// This is an example configuration file for D2, Kea's DHCP-DDNS processor.
// It supports updating two Forward DNS zones "four.example.com" and
// "six.example.com"; and one Reverse DNS zone, "2.0.192.in-addr.arpa."

{
// ------------------ DHCP-DDNS ---------------------
//
"DhcpDdns":
{

// --------------  Global Parameters ----------------
//
//   D2 will listen for update requests for Kea DHCP servers at 172.16.1.10
//   on port 53001.  Maximum time to we will  wait for a DNS server to
//   respond to us is 1000 ms.

    "ip-address": "172.16.1.10",
    "port": 53001,
    "dns-server-timeout" : 1000,

//
// ----------------- Forward DDNS  ------------------
//
//   1. Zone - "four.example.com.
//      It uses TSIG, key name is "d2.md5.key"
//      It is served by one DNS server which listens for DDNS requests at
//      172.16.1.1 on the default port 53 (standard  DNS port)
//
//   2. Zone - "six.example.com."
//      It does not use TSIG.
//      It is server by one DNS server at "2001:db8:1::10" on port 7802

    "forward-ddns":
    {
        "ddns-domains":
        [
//           DdnsDomain for zone "four.example.com."
            {
                "name": "four.example.com.",
                "key-name": "d2.md5.key",
                "dns-servers":
                [
                    {
                        "ip-address": "172.16.1.1"
                    }
                ]
            },

//           DdnsDomain for zone "six.example.com."
            {
                "name": "six.example.com.",
                "dns-servers":
                [
                    {
                        "ip-address": "2001:db8:1::10",
                        "port": 7802
                    }
                ]
            }
        ]
    },

// ----------------- Reverse DDNS  ------------------
//
// We will update Reverse DNS for one zone "2.0.192.in-addr-arpa". It
// uses TSIG with key "d2.sha1.key" and is served by two DNS servers:
// one listening at "172.16.1.1" on 53001 and the other at "192.168.2.10".
//
    "reverse-ddns":
    {
        "ddns-domains":
        [
            {
                "name": "2.0.192.in-addr.arpa.",
                "key-name": "d2.sha1.key",
                "dns-servers":
                [
                    {
                        "ip-address": "172.16.1.1",
                        "port": 53001
                    },
                    {
                        "ip-address": "192.168.2.10"
                    }
                ]
            }
        ]
    },

// ------------------ TSIG keys ---------------------
//
//   Each key has a name, an algorithm (HMAC-MD5, HMAC-SHA1, HMAC-SHA224...)
//   and a base-64 encoded shared secret.
//
    "tsig-keys":
    [
        {
            "name": "d2.md5.key",
            "algorithm": "HMAC-MD5",
            "secret": "LSWXnfkKZjdPJI5QxlpnfQ=="
        },
        {
            "name": "d2.sha1.key",
            "algorithm": "HMAC-SHA1",
            "secret": "hRrp29wzUv3uzSNRLlY68w=="
        },
        {
            "name": "d2.sha512.key",
            "algorithm": "HMAC-SHA512",
            "digest-bits": 256,
            "secret": "/4wklkm04jeH4anx2MKGJLcya+ZLHldL5d6mK+4q6UXQP7KJ9mS2QG29hh0SJR4LA0ikxNJTUMvir42gLx6fGQ=="
        }
    ]
},

// The following configures logging. It assumes that messages with at least
// informational level (info, warn, error and fatal) should be logged to stdout.
"Logging": {
    "loggers": [
        {
            "name": "kea-dhcp-ddns",
            "output_options": [
                {
                    "output": "stdout",
                    // Several additional parameters are possible in addition
                    // to the typical output. Flush determines whether logger
                    // flushes output to a file. Maxsize determines maximum
                    // filesize before the file is being rotated. maxver
                    // specifies the maximum number of rotated files being
                    // kept.
                    "flush": true,
                    "maxsize": 204800,
                    "maxver": 4
                }
            ],
            "debuglevel": 0,
            "severity": "INFO"
        }
    ]
}
    

}