deploying into kvm with local provider, hostnames are not unique

[Nobuto Murata]

When deploying a node into kvm with local provider:
$ juju deploy --to kvm:0 SERVICE

Every node will have the same hostname "ubuntu" which is not unique in the environment.
Expected result is that every node has a unique hostname like $USER-local-machine-0-kvm-1 as well as other lxc containers.

$ virsh list
 Id Name State
----------------------------------------------------
 28 nobuto-local-machine-0-kvm-0 running
 29 nobuto-local-machine-0-kvm-1 running
 30 nobuto-local-machine-0-kvm-2 running
 31 nobuto-local-machine-0-kvm-3 running

$ juju run --service nova-compute 'hostname'
- MachineId: 0/kvm/1
  Stdout: 'ubuntu

'
  UnitId: nova-compute/0
- MachineId: 0/kvm/3
  Stdout: 'ubuntu

'
  UnitId: nova-compute/1

juju-core:
  Installed: 1.19.3-0ubuntu1~14.10.1~juju1
  Candidate: 1.19.3-0ubuntu1~14.10.1~juju1
  Version table:
 *** 1.19.3-0ubuntu1~14.10.1~juju1 0
        500 http://ppa.launchpad.net/juju/devel/ubuntu/ utopic/main amd64 Packages
        100 /var/lib/dpkg/status
     1.18.1-0ubuntu1 0
        500 http://jp.archive.ubuntu.com/ubuntu/ utopic/universe amd64 Packages
juju-local:
  Installed: 1.19.3-0ubuntu1~14.10.1~juju1
  Candidate: 1.19.3-0ubuntu1~14.10.1~juju1
  Version table:
 *** 1.19.3-0ubuntu1~14.10.1~juju1 0
        500 http://ppa.launchpad.net/juju/devel/ubuntu/ utopic/main amd64 Packages
        100 /var/lib/dpkg/status
     1.18.1-0ubuntu1 0
        500 http://jp.archive.ubuntu.com/ubuntu/ utopic/universe amd64 Packages

[Nobuto Murata (nobuto)]

It looks like juju does not put hostname in cloud-config.
no hostname line in /var/lib/cloud/instance/user-data.txt.

[Adam Stokes (adam-stokes)]

We've run into this issue as well. Ceph will fail to report its status when units are KVM as ceph relies on the machine name:

http://paste.ubuntu.com/10391261/

Using juju 1.20.11, trusty 14.04.1, local provider