If you use libvirt with the ‘sudo’ prefix ($ sudo virsh –c qemu+ssh://[host]/system) you also have to setup passwordless login for the root user.

You can test it by:

$ sudo –i

$ ssh –l root [host]

Van: libvirt-users-bounces@redhat.com [mailto:libvirt-users-bounces@redhat.com] Namens nidhi d
Verzonden: donderdag 24 maart 2016 11:44
Aan: Michal Privoznik; libvirt-users@redhat.com
Onderwerp: Re: [libvirt-users] (no subject)

I have made all these changes in my Ubuntu desktop. I have also enabled passwordless login for ssh at destination. But still, everytime i run into the same problem.

On Thu, Mar 24, 2016, 4:05 PM Michal Privoznik <mprivozn@redhat.com> wrote:

On 24.03.2016 11:23, nidhi d wrote:
> From the auth log at the destination:
> Failed password for <user> from <ip> port <no> ssh2

There's your answer. Libvirt really requires pubkey instead of passwd auth.

http://wiki.libvirt.org/page/SSHSetup

Michal