user@workstation:~$ ssh ubuntu@server

$ sudo apt -y -qq install uvtool-libvirt
...
$

$ exit
user@workstation:~$ ssh ubuntu@server
$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/ubuntu/.ssh/id_rsa): 
Created directory '/home/ubuntu/.ssh'.
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /home/ubuntu/.ssh/id_rsa.
Your public key has been saved in /home/ubuntu/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:eJnE74biC+t38cLMPhWVawf6m940INrOTCBP+nJOiNE ubuntu@server
The key's randomart image is:
+---[RSA 2048]----+
|             .   |
|       .    +    |
|        o  o o   |
|     . o +o o .  |
|    . E S o+..   |
|     o B.*....   |
|    o ++=+=  oo  |
|     +o+O*. oo . |
|   .o.oB+o+.. .  |
+----[SHA256]-----+
$ cat ~/.ssh/id_rsa.pub
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC0zFQvU1Ln6yKk4RcXalgzLKAyoR3ty9LoaO974RGLoVLeoW9e6Dk8Rkc9uVD5a5BPUwXrAXZGUdoPT7pDXrr2R2D+IZ13rCEHO7sYaM5jV8AT0U1lfqEe3YB+M+SOq04VN0E1u0qF9oN4wJsPbwJTk7Vi5o1dta7HZWWgyabYk+hsjXRcg79lJNHVqOyMKVOUwVqfP/kJQwbVsAPQh/6NFVY8h35TJAKjTn/ETXX7vtF4N1NXr7+kCB0Vet/3xbJ9ujNPid9rXAbBWQH8jMIrQrtccmHgs4ctRh8T53WWN6AOFruHgLj/K/qiJpUTaMMqFJGDVFi57abYN+5IWdjJ ubuntu@server
$

# for a daily image:

$ uvt-simplestreams-libvirt sync --source http://cloud-images.ubuntu.com/daily arch=$(arch) label=daily release=$(lsb_release -cs)
$
$ uvt-kvm create $(lsb_release -cs)-vm-6 release=$(lsb_release -cs) label=daily

$ virsh list --all
 Id   Name         State
-----------------------------
 6    disco-vm-6   running
 -    ubu-vm-02    shut off
 -    ubu-vm-03    shut off
 -    ubu-vm-04    shut off
 -    ubu-vm-05    shut off

$

$ uvt-kvm wait $(lsb_release -cs)-vm-6
$

[
$ virsh console $(lsb_release -cs)-vm-6
]

$ uvt-kvm ssh $(lsb_release -cs)-vm-6
Welcome to Ubuntu Disco Dingo (development branch) (GNU/Linux 5.0.0-8-generic s390x)

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

  System information as of Mon Apr 15 18:15:46 UTC 2019

  System load:  0.09              Processes:           95
  Usage of /:   13.3% of 7.69GB   Users logged in:     0
  Memory usage: 31%               IP address for enc2: 192.168.122.27
  Swap usage:   0%


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


To run a command as administrator (user "root"), use "sudo <command>".
See "man sudo_root" for details.

ubuntu@disco-vm-6:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu Disco Dingo (development branch)
Release:	19.04
Codename:	disco
ubuntu@disco-vm-6:~$ sudo passwd ubuntu
New password: 
Retype new password: 
passwd: password updated successfully
ubuntu@disco-vm-6:~$ exit
logout
Connection to 192.168.122.27 closed.
$

$ virsh console $(lsb_release -cs)-vm-6
Connected to domain disco-vm-6
Escape character is ^]

disco-vm-6 login: ubuntu
Password: 
Last login: Mon Apr 15 18:16:30 UTC 2019 from 192.168.122.1 on pts/0
Welcome to Ubuntu Disco Dingo (development branch) (GNU/Linux 5.0.0-8-generic s390x)

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

  System information as of Mon Apr 15 18:19:24 UTC 2019

  System load:  0.07              Processes:           89
  Usage of /:   13.4% of 7.69GB   Users logged in:     0
  Memory usage: 31%               IP address for enc2: 192.168.122.27
  Swap usage:   0%


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

ubuntu@disco-vm-6:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu Disco Dingo (development branch)
Release:	19.04
Codename:	disco
$
$ virsh list --all
 Id   Name         State
-----------------------------
 6    disco-vm-6   running
 -    ubu-vm-02    shut off
 -    ubu-vm-03    shut off
 -    ubu-vm-04    shut off
 -    ubu-vm-05    shut off

$ virsh destroy disco-vm-6
Domain disco-vm-6 destroyed

$ virsh list --all
 Id   Name         State
-----------------------------
 -    disco-vm-6   shut off
 -    ubu-vm-02    shut off
 -    ubu-vm-03    shut off
 -    ubu-vm-04    shut off
 -    ubu-vm-05    shut off

$

# for a release image:

$ uvt-simplestreams-libvirt sync --source http://cloud-images.ubuntu.com/releases arch=$(arch) label=release release=$(lsb_release -cs)
# release(s):
$ uvt-kvm create $(lsb_release -cs)-vm-7 release=$(lsb_release -cs) label=release

[
$ virsh list --all
 Id    Name                           State
----------------------------------------------------
 1     disco-vm-7                    running
]

$ uvt-kvm wait $(lsb_release -cs)-vm-7
$ uvt-kvm ssh $(lsb_release -cs)-vm-7
Welcome to Ubuntu disco Cuttlefish (development branch) (GNU/Linux 4.17.0-9-generic s390x)
ubuntu@disco-vm-7:~$ sudo passwd ubuntu
$ virsh console $(lsb_release -cs)-vm-7