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    Copyright 2013 Hewlett-Packard Development Company, L.P.

    Licensed under the Apache License, Version 2.0 (the "License"); you may
    not use this file except in compliance with the License. You may obtain
    a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
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    License for the specific language governing permissions and limitations
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Bind9 Backend
=============

This page documents using the Pool Manager Bind 9 backend.
The backend uses the rndc utility to create and delete zones remotely.

The traffic between rndc and Bind is authenticated with a key.

Designate Configuration
-----------------------

Example configuration required for Bind9 operation. One section for each pool target

.. code-block:: ini

    [pool_target:f26e0b32-736f-4f0a-831b-039a415c481e]
    options = rndc_host: 192.168.27.100, rndc_port: 953, rndc_config_file: /etc/bind/rndc.conf, rndc_key_file: /etc/bind/rndc.key, port: 53, host: 192.168.27.100, clean_zonefile: false
    masters = 192.168.27.100:5354
    type = bind9

The key and config files are relative to the host running Pool Manager (and can
be different from the hosts running Bind)

Bind9 Configuration
-------------------

Ensure Bind can access the /etc/bind/rndc.conf and /etc/bind/rndc.key files and
receive rndc traffic from Pool Manager.

Enable rndc addzone/delzone functionality by editing named.conf.options or named.conf and add this line under options

.. code-block:: c

    allow-new-zones yes;

Example configuration of /etc/bind/rndc.key

.. code-block:: c

    key "rndc-key" {
        algorithm hmac-md5;
        secret "<b64-encoded string>";
    };