root@ptcvm3:~# juju list-clouds
CLOUD        TYPE        REGIONS
aws          ec2         us-east-1, us-west-1, us-west-2, eu-west-1, eu-central-1, ap-southeast-1, ap-southeast-2 ...
aws-china    ec2         cn-north-1
aws-gov      ec2         us-gov-west-1
azure        azure       centralus, eastus, eastus2, northcentralus, southcentralus, westus, northeurope ...
azure-china  azure       chinaeast, chinanorth
cloudsigma   cloudsigma  hnl, mia, sjc, wdc, zrh
google       gce         us-east1, us-central1, europe-west1, asia-east1
joyent       joyent      eu-ams-1, us-sw-1, us-east-1, us-east-2, us-east-3, us-west-1
rackspace    rackspace   dfw, ord, iad, lon, syd, hkg
localhost    lxd         localhost