Add initial BIND9 backend docs

Change-Id: I28afe376026c6546a1e87bad5bdf67ae6b4d907e

doc/source/backends.rst

@@ -0,0 +1,25 @@
+..
+    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
+    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+    License for the specific language governing permissions and limitations
+    under the License.
+
+Backend Documenation
+====================
+
+Contents:
+
+.. toctree::
+   :maxdepth: 2
+   :glob:
+
+   backends/bind9

doc/source/backends/bind9.rst

@@ -0,0 +1,51 @@
+..
+    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
+    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+    License for the specific language governing permissions and limitations
+    under the License.
+
+BIND9 Backend
+=============
+
+.. note::
+   The BIND9 backend, while functional, is lacking a solid process for
+   distributing zonefiles among multiple DNS servers. The soon to be introduced
+   concept of "Pools" will provide a foundation to fix this.
+
+Designate Configuration
+-----------------------
+
+Configuration Options required for BIND9 operation::
+
+    [service:central]
+    state-path = /var/lib/designate
+    backend_driver = bind9
+
+    [backend:bind9]
+    rndc-host = 127.0.0.1
+    rndc-port = 953
+    rndc-config-file = /etc/bind9/rndc.conf  # If required by BIND9
+    rndc-key-file = /etc/bind/rndc.key
+
+BIND9 Configuration
+-------------------
+
+Include the Designate generated configuration in /etc/bind/named.conf.local::
+
+    include "/var/lib/designate/bind9/zones.config";
+
+Ensure BIND9 can access the above config, one way to achieve this is by
+disabling AppArmour::
+
+    $ touch /etc/apparmor.d/disable/usr.sbin.named
+    $ service apparmor reload
+    $ service bind9 restart

doc/source/index.rst

@@ -31,6 +31,7 @@ also be found on the `OpenStack wiki`_.
    related
    production-architecture
    glossary
+   backends
 
 
 Indices and tables