ubuntu@controller:~$ juju run --unit kubernetes-master/1 'hooks/install'
Generating RSA private key, 2048 bit long modulus
..............................................+++
...................................................................................+++
unable to write 'random state'
e is 65537 (0x10001)
ubuntu@controller:~$ juju run --unit kubernetes-master/1 'openssl genrsa -out /etc/kubernetes/serviceaccount.key 2048'
Generating RSA private key, 2048 bit long modulus
.......+++
..........+++
unable to write 'random state'
e is 65537 (0x10001)
ubuntu@controller:~$ juju ssh kubernetes-master/1
Welcome to Ubuntu 16.04.2 LTS (GNU/Linux 4.4.0-59-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  Get cloud support with Ubuntu Advantage Cloud Guest:
    http://www.ubuntu.com/business/services/cloud

7 packages can be updated.
7 updates are security updates.


*** System restart required ***
Last login: Fri Mar 17 14:32:49 2017 from 192.168.27.36
ubuntu@k8s-control:~$ sudo -i
sudo: unable to resolve host k8s-control
root@k8s-control:~# openssl genrsa -out /etc/kubernetes/serviceaccount.key 2048
Generating RSA private key, 2048 bit long modulus
.....................................+++
.....+++
e is 65537 (0x10001)
root@k8s-control:~#