Ubuntu Core 16 Release Candidate 2 (with Pi and more)

[Michael Vogt]

Hi,

The Snappy team is happy to announce the second Release Candidate of
Ubuntu Core 16.

Ubuntu Core is an operating system entirely based on snaps, including
its foundation. Applications, kernel, core operating system, and
gadget components are all managed as snaps and are installed and
refreshed by snapd, the daemon and tooling responsible for making it
all dance.

Since the previous release:

- Several small bugfixes
- Fixes for the pi2/pi3/dragonboard

The images are available currently for PC (amd64, i386) and
for Pi2/Pi3 and Dragonboard:

    http://cdimage.ubuntu.com/ubuntu-core/xenial/daily-preinstalled/current

Once unpacked, the images are bootable, the PC image can be booted
directly in qemu-kvm, virtualbox or on real hardware. When running the
images in qemu-kvm it is helpful to use the "-redir" feature of
qemu-kvm. E.g.:

    $ kvm -smp 2 -m 1500 -redir tcp:10022::22 ubuntu-core-16-amd64-rc2.img

The message from console-conf is a bit misleading in this setup. It
will say "ssh USER at 10.0.2.15". However due to the way that qemu-kvm
user networking behaves, you will actually have to run the following
to ssh into the images:

    $ ssh -p 10022 USER at localhost

or if you have the following snippet in ~/.ssh/config

Host kvm.snappy
     Hostname localhost
     Port 10022
     User USER
     UserKnownHostsFile /dev/null
     StrictHostKeyChecking no

then you can just

    $ ssh kvm.snappy

The pi2/pi3/dragonboard image can be written to a sdcard via dd. An
alternative way to write the image is to use "go-dd":

     $ sudo snap install --devmode --beta godd
     $ sudo /snap/bin/godd ubuntu-core-16-pi2.img.xz
     [this will print a message showing what devices are removable]
     $ xzcat ubuntu-core-16-pi2-rc2.img.xz | sudo /snap/bin/godd - /dev/sdXX

After booting the image you can enter your Ubuntu One email and it
will automatically create a matching user with the right ssh keys. If
you do not have an Ubuntu SSO account yet you can create one at:

    https://login.ubuntu.com/

(don't forget to add your public ssh keys to that account).

Known issues:
- pi3 wlan can not be initially configured, wired network needs to be
  used for the initial setup (you can re-run "sudo console-conf" at
  any later point to re-configure the device for wlan only operation).

These images follow the "candidate" channel. If you find any issues,
please let us know via:

    https://bugs.launchpad.net/snappy/

Enjoy the fresh images!


Cheers,
 Michael Vogt (on behalf of the Snappy team)