virsh rights voor normal users

[Michal Privoznik]

On 10/29/20 4:47 PM, Natxo Asenjo wrote:
> ah, yes. I try this:
> 
> $ virsh -c qemu:///system
> 
> But it then I get a prompt:
> 
> ==== AUTHENTICATING FOR org.libvirt.unix.manage =============
> System policy prevents management of local virtualized systems
> Authenticating as:  sudo_user_not_disclosed
> Password:
> Password:
> polikit-agent-helper-1: pam_authenticate failed: Authentication failure
> 
> Our allowed groups in the /etc/dbus-1/system.d/org.libvirt.conf are no 
> sudo users (this can change, but not as of now). It is a bit strange 
> that the get the password prompt for a local sudo user we have in place 
> for as systems have no working sssd connection to the idm realm (break 
> glass user)
> 
> My user can use the system bus in cockpit without a password.
> 
> The dbus policy looks like this:
> 
> <policy group="groupname">
>      < allow send_destination="org.libvirt"/>
> </policy>
> <policy group="other_groupname">
>      < allow send_destination="org.libvirt"/>
> </policy>

This is expected. qemu:///system uses an unix socket to talk to libvirtd 
and not dbus. I don't know what credentials does cockpit set there.
But I'm not sure it's safe to go behind cockpit's back and talk to 
libvirt directly. If you'd change a configuration of a VM it may not be 
reflected in cockpit.

Michal