Jimison, Ed
2006-Nov-21 23:06 UTC
[Fedora-xen] error when trying to connect with virt-manager
I am doing a new install of Fedora Core 6, trying to use the
virt-manager app to create fully virtualized guests on an Intel
VT-enabled system. I have read the Fedora Xen Quickstart guide and have
verified that the Xen kernel is running (via uname -r) and that Xen is
started (via xm list). After starting virt-manager, clicking "Local Xen
host" in the Open connection box, and clicking Connect I get the
following error:
Unable to open a connection to the Xen hypervisor/daemon
Verify that:
- A Xen host kernel was booted
- The Xen service has been started
Has anyone else seen this?
Fischer, Anna
2006-Nov-22 07:37 UTC
RE: [Fedora-xen] error when trying to connect with virt-manager
I have the same problem, with xend + Xen kernel running and the xend-config.sxp configured accordingly by setting either (xend-http-server yes) or (xend-unix-server yes). But still I can''t get virt-manager to run. I hope someone can help here... ________________________________ From: fedora-xen-bounces@redhat.com [mailto:fedora-xen-bounces@redhat.com] On Behalf Of Jimison, Ed Sent: 21 November 2006 23:06 To: fedora-xen@redhat.com Subject: [Fedora-xen] error when trying to connect with virt-manager I am doing a new install of Fedora Core 6, trying to use the virt-manager app to create fully virtualized guests on an Intel VT-enabled system. I have read the Fedora Xen Quickstart guide and have verified that the Xen kernel is running (via uname -r) and that Xen is started (via xm list). After starting virt-manager, clicking "Local Xen host" in the Open connection box, and clicking Connect I get the following error: Unable to open a connection to the Xen hypervisor/daemon Verify that: - A Xen host kernel was booted - The Xen service has been started Has anyone else seen this?
Daniel P. Berrange
2006-Nov-22 12:07 UTC
Re: [Fedora-xen] error when trying to connect with virt-manager
On Wed, Nov 22, 2006 at 07:37:59AM -0000, Fischer, Anna wrote:> I have the same problem, with xend + Xen kernel running and the > xend-config.sxp configured accordingly by setting either > > (xend-http-server yes) orDon''t turn this on - it is a (remotely exploitable) security hole because it makes XenD open a TCP port with no authentication checks made upon connection :-(> (xend-unix-server yes).This is the required parameter for virt-manager.> But still I can''t get virt-manager to run. I hope someone can help > here...Check in /root/.virt-manager/virt-manager.log for any errors being reported. Also just try running ''virsh list'' which is a simple sanity test for libvirt operating correctly. Regards, Dan. -- |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=| |=- Perl modules: http://search.cpan.org/~danberr/ -=| |=- Projects: http://freshmeat.net/~danielpb/ -=| |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=|
Fischer, Anna
2006-Nov-22 12:27 UTC
RE: [Fedora-xen] error when trying to connect with virt-manager
The log says: Wed, 22 Nov 2006 12:17:44 ERROR Unable to open connection to hypervisor URI ''xen'': socket.gaierror (-2, ''Name or service not known'') "virsh list" runs perfect on my system. Furthermore, a strange thing is that while this error message window is shown when virt-manager starts up, I can see in the background (virt-manager GUI is actually loaded while showing the error message) that virt-manager shows Dom0 and its CPU usage etc. correctly. So why do I get this error message then and virt-manager shuts down?> -----Original Message----- > From: Daniel P. Berrange [mailto:berrange@redhat.com] > Sent: 22 November 2006 12:07 > To: Fischer, Anna > Cc: Jimison, Ed; fedora-xen@redhat.com > Subject: Re: [Fedora-xen] error when trying to connect with > virt-manager > > On Wed, Nov 22, 2006 at 07:37:59AM -0000, Fischer, Anna wrote: > > I have the same problem, with xend + Xen kernel running and the > > xend-config.sxp configured accordingly by setting either > > > > (xend-http-server yes) or > > Don''t turn this on - it is a (remotely exploitable) security > hole because it makes XenD open a TCP port with no > authentication checks made upon connection :-( > > > (xend-unix-server yes). > > This is the required parameter for virt-manager. > > > But still I can''t get virt-manager to run. I hope someone can help > > here... > > Check in /root/.virt-manager/virt-manager.log for any errors > being reported. Also just try running ''virsh list'' which is a > simple sanity test for libvirt operating correctly. > > Regards, > Dan. > -- > |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 > 978 392 2496 -=| > |=- Perl modules: http://search.cpan.org/~danberr/ > -=| > |=- Projects: http://freshmeat.net/~danielpb/ > -=| > |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF > F742 7D3B 9505 -=| >
Daniel P. Berrange
2006-Nov-22 13:32 UTC
Re: [Fedora-xen] error when trying to connect with virt-manager
On Wed, Nov 22, 2006 at 12:27:01PM -0000, Fischer, Anna wrote:> The log says: > > Wed, 22 Nov 2006 12:17:44 ERROR Unable to open connection to > hypervisor URI ''xen'': socket.gaierror (-2, ''Name or service not known'')Hmm, sounds like you have a messed up /etc/hosts file - check that the line for ''127.0.0.1'' has a name ''localhost'' associated with it, eg $ cat /etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost.localdomain localhost ::1 localhost.localdomain localhost> > "virsh list" runs perfect on my system. Furthermore, a strange thing is > that while this error message window is shown when virt-manager starts > up, I can see in the background (virt-manager GUI is actually loaded > while showing the error message) that virt-manager shows Dom0 and its > CPU usage etc. correctly. So why do I get this error message then and > virt-manager shuts down?Its it failing to lookup ''localhost'' when opening the console for the guest I think. Dan. -- |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=| |=- Perl modules: http://search.cpan.org/~danberr/ -=| |=- Projects: http://freshmeat.net/~danielpb/ -=| |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=|
Fischer, Anna
2006-Nov-22 14:37 UTC
RE: [Fedora-xen] error when trying to connect with virt-manager
Yes, you were right. It was in fact a name resolution problem. Now it works fine. Thanks!!> -----Original Message----- > From: Daniel P. Berrange [mailto:berrange@redhat.com] > Sent: 22 November 2006 13:33 > To: Fischer, Anna > Cc: Jimison, Ed; fedora-xen@redhat.com > Subject: Re: [Fedora-xen] error when trying to connect with > virt-manager > > On Wed, Nov 22, 2006 at 12:27:01PM -0000, Fischer, Anna wrote: > > The log says: > > > > Wed, 22 Nov 2006 12:17:44 ERROR Unable to open connection to > > hypervisor URI ''xen'': socket.gaierror (-2, ''Name or service not > > known'') > > Hmm, sounds like you have a messed up /etc/hosts file - check > that the line for ''127.0.0.1'' has a name ''localhost'' > associated with it, eg > > $ cat /etc/hosts > # Do not remove the following line, or various programs # > that require network functionality will fail. > 127.0.0.1 localhost.localdomain localhost > ::1 localhost.localdomain localhost > > > > > > "virsh list" runs perfect on my system. Furthermore, a > strange thing > > is that while this error message window is shown when virt-manager > > starts up, I can see in the background (virt-manager GUI is > actually > > loaded while showing the error message) that virt-manager > shows Dom0 > > and its CPU usage etc. correctly. So why do I get this > error message > > then and virt-manager shuts down? > > Its it failing to lookup ''localhost'' when opening the console > for the guest I think. > > Dan. > -- > |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 > 978 392 2496 -=| > |=- Perl modules: http://search.cpan.org/~danberr/ > -=| > |=- Projects: http://freshmeat.net/~danielpb/ > -=| > |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF > F742 7D3B 9505 -=| >