[Maas-devel] 1.6.0 released for Ubuntu 14.04

[Julian Edwards]

See ppa:maas-maintainers/stable

The gory details are in here:
https://launchpad.net/maas/+milestone/1.6.0

Thank you to everyone who worked hard on all the fixes and improvements
that went into this release.

Here's a copy of the release notes:

1.6.0
=====

Special notice:
  Cluster interfaces now have static IP ranges in order to give nodes
stable IP addresses. You need to set the range in each interface to turn
on this feature. See below for details.

Major new features
------------------

IP addresses overhaul.
  This release contains a total reworking of IP address allocation. You
can now define a separate "static" range in each cluster interface
configuration that is separate from the DHCP server's dynamic range. Any
node in use by a user will receive an IP address from the static range
that is guaranteed not to change during its allocated lifetime.
Previously, this was at the whim of the DHCP server despite MAAS placing
host maps in its configuration.

  Currently, dynamic IP addresses will continue to receive DNS entries
so as to maintain backward compatibility with installations being
upgraded from 1.5. However, this will be changed in a future release to
only give DNS entries to static IPs.

  You can also use the API to `reserve IP addresses`_ on a per-user basis.

.. _reserve IP addresses:
http://maas.ubuntu.com/docs1.6/api.html#ip-addresses

Support for additional OSes.
  MAAS can now install operating systems other than Ubuntu on nodes.
  Preliminary beta support exists for CentOS and SuSE via the `Curtin`_
"fast" installer. This has not been thoroughly tested yet and has been
provided in case anyone finds this useful and is willing to help find
and report bugs.

Minor notable changes
---------------------

DNS entries
  In 1.5 DNS entries for nodes were a CNAME record. As of 1.6, they are
now all "A" records, which allows for reliable reverse look-ups.

  Only nodes that are allocated to a user and started will receive "A"
record entries. Unallocated nodes no longer have DNS entries.

Removal of bootresources.yaml
  The bootresources.yaml file, which had to be configured separately on
each cluster controller, is no longer in use. Instead, the configuration
for  which images to download is now held by the region controller, and
defaults to downloading all images for LTS releases. A `rudimentary
API`_ is available to manipulate this configuration.

.. _rudimentary API: http://maas.ubuntu.com/docs1.6/api.html#boot-source

Fast installer is now the default
  Prevously, the slower Debian installer was used by default. Any newly-
  enlisted nodes will now use the newer `fast installer`_. Existing
nodes will keep the installer setting that they already have.

.. _fast installer: https://launchpad.net/curtin