[libvirt] Remote Xen and libvirt >= 0.5.0 Issues

[Hany Fahim]

Hey Daniel,
Thanks for the reply. The strange thing is, libvirt isn't even attempting to
establish a connection with the remote server. I've performed tcpdumps to
verify this; no traffic is exchanged between the two hosts when executing
the virsh command. If I switch back to a version of libvirt below 0.5.0 such
as 0.4.6, it works like a charm.

Is there anything else I could try?

Hany

On Mon, Jun 8, 2009 at 7:04 AM, Daniel P. Berrange <berrange at redhat.com>wrote:

> On Sun, Jun 07, 2009 at 02:02:20PM -0400, Hany Fahim wrote:
> > Hi,
> > I'm currently running a few servers with CentOS 5.3 (i386) with the stock
> > Xen version:
> >
> > # rpm -q kernel-xen xen libvirt
> > kernel-xen-2.6.18-92.1.22.el5
> > kernel-xen-2.6.18-128.1.6.el5
> > xen-3.0.3-80.el5_3.2
> > libvirt-0.6.3-1
> >
> > libvirt was compiled from the src RPM from libvirt.org to run on i386
> > architecture without issue. I'm having a problem when trying to connect
> to
> > remote Xen installations using versions of libvirt starting from 0.5.0
> and
> > above. When issuing virsh commands to query the local instance, it works
> > without issue, but any remote sources gives 'error: failed to connect to
> the
> > hypervisor'. Here's what LIBVIRT_DEBUG reveals:
> >
> > # LIBVIRT_DEBUG=6 virsh -d 5 -c xen://node3/ list
> > command: "list "
> > 13:53:17.133: debug : do_open:930 : trying driver 0 (Test) ...
> > 13:53:17.133: debug : do_open:936 : driver 0 Test returned DECLINED
> > 13:53:17.133: debug : do_open:930 : trying driver 1 (Xen) ...
> > 13:53:17.133: debug : do_open:936 : driver 1 Xen returned DECLINED
> > 13:53:17.133: debug : do_open:930 : trying driver 2 (OPENVZ) ...
> > 13:53:17.133: debug : do_open:936 : driver 2 OPENVZ returned DECLINED
> > 13:53:17.133: debug : do_open:930 : trying driver 3 (VBOX) ...
> > 13:53:17.133: debug : do_open:936 : driver 3 VBOX returned DECLINED
> > 13:53:17.133: debug : do_open:930 : trying driver 4 (remote) ...
> > 13:53:17.133: debug : do_open:936 : driver 4 remote returned DECLINED
> > 13:53:17.133: debug : virUnrefConnect:210 : unref connection 0x93275d0 1
> > 13:53:17.134: debug : virReleaseConnect:171 : release connection
> 0x93275d0
> > error: failed to connect to the hypervisor
>
>
> It looks very much like the remote driver is failing to connect to the
> remote
> libvirtd daemon. Please verify that libvirtd on the remote host was started
> with the --listen flag, and that you have configured x509 certificates and
> have not disabled the  'listen_tls' config param in
> /etc/libvirt/libvirtd.conf
>
>
> Daniel
> --
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>
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