juju metadata issues

I am trying to bootstrap juju 2.0 on a private openstack cloud. I am using 14.04.3 images in glance, trying to generate  my own metadata.

Running:
juju metadata generate-image -a amd64 -i 0f719993-0ffa-4202-bc13-de2540f0e0bb -r RegionOne -s wily -d /home/ubuntu -u http://192.168.4.11:5000/v2.0

gives me the error that :

WARNING model could not be opened: model "" not found
ERROR streams/v1/index2.sjson not accessed, actual error: invalid URL "file:///home/ubuntu/images/streams/v1/index2.sjson" not found
ERROR streams/v1/index2.json not accessed, actual error: invalid URL "file:///home/ubuntu/images/streams/v1/index2.json" not found

Image metadata files have been written to:...

If I specify -m ~/environments.yaml on the juju metadata generate-image command, tells me:

WARNING model could not be opened: model "environments.yaml" not found

If I set JUJU_MODEL=dr, it tells me it can't find dr.

## contents of /home/ubuntu/.local/share/juju/clouds.yaml
clouds:
  dr:
    type: openstack
    auth-types: [userpass]
    regions:
      RegionOne:
        endpoint: http://192.168.4.11:5000/v2.0

## contents of /home/ubuntu/.local/share/juju/environments.yaml
environments:
  dr:
    type: openstack
    use-floating-ip: false
    use-default-secgroup: false
    network: admin_internal_net
    auth-url: http://192.168.4.11:5000/v2.0
    region: RegionOne
    auth-mode: userpass
    tenant-name: juju
    username: juju
    password: supersecretpassword


## output of juju list-clouds:

CLOUD        TYPE        REGIONS
...
local:dr     openstack   RegionOne