[libvirt-users] Windows Vista Client Fails to Connect to Ubuntu libvirtd

[Matthias Bolte]

2010/4/30 Tim McLeod <tim.mcleod at simulamen.eu>:
> Requesting urgent assistance if I may?
>
> Attempting to connect to an Ubuntu machine using an MinMG compiled virsh on
> a Windows Vista machine.  Using insecure TCP simply to prove a concept to a
> client.  However, cannot connect; situation as follows:
>
> Edited /etc/libvirt/libvirt.conf as follows:
> listen_tcp = 1
> auth_tcp = "none"
>
> Edited /etc/default//libvirt-bin as follows:
> libvirt-opts="-d -l"

Did you restart libvirtd after the changes and checked that it's
started successfully?

listen_tls defaults to 1 in /etc/libvirt/libvirt.conf, in combination
with the -l flag (short for --listen) libvirtd requires properly
configured SSL certificates. If libvirtd can't find the certificates
or fails to validate them then it won't start up.

You can disable TLS in /etc/libvirt/libvirt.conf by setting listen_tls
= 0 and restart libvirtd.

> Running virsh on Vista client fails as follows:
> $ virsh -c qemu+tcp://192.168.1.101/system
> error: unable to connect to libvirtd at '192.168.1.101': errno=10061
> error: failed to connect to the hypervisor
>
> Running virsh on Ubuntu server fails as follows:
> $ virsh -c qemu+tcp:///system
> Connecting to uri: qemu+tcp:///system
> error: unable to connect to libvirtd at 'localhost': Connection refused
> error: failed to connect to the hypervisor

Once libvirtd is running and configured properly for TCP transport
then remote and local TCP access to libvirtd works for me.

> Indeed, with libvirt-opts="-d -l" in etc/default//libvirt-bin the 'default'
> command also fails:
> $ virsh -c qemu:///system
> Connecting to uri: qemu:///system
> error: unable to connect to 'var/run/libvirt/libvirt-sock': Connection
> refused
> error: failed to connect to the hypervisor
>

Local access to libvirtd using qemu:///system requires properly
configured polkit, or running virsh as root. This is independent from
the -d and -l flags.

Matthias