[Fedora-xen] virt-manager make check errors and connection errors

[Daniel P. Berrange]

On Thu, Nov 09, 2006 at 04:39:27PM -0500, Dan B. Phung wrote:
> I'm using virt-manager-0.2.5 on a Debian system.  I installed these 
> packages per the prerequisites using aptitude:
> aptitude install python-gtk2 python-gtk2-dev python-gnome2 
> python-gnome2-dev python-dbus  python-vte python-glade2 python-urlgrabber
> 
> I installed libvirt from the cvs sources and I aliened and installed 
> python-virtinst-0.96.0-1.noarch.rpm.
> 
> 'make check' for virt-manager complained about some rhpl exceptions, so 
> I commented out these lines.
> 
> src/virtManager/create.py
> - from rhpl.exception import installExceptionHandler
> - from rhpl.translate import _, N_, textdomain, utf8

I've no idea how this got into the python code - those imports are some
Red Hat specific python helper modules, which I was explicitly trying to
avoid in virt-manager. I'm about to put up a 0.2.6 release which will
remove this crack rock :-)  Removing them was a safe thing to do.

> So I do a 'make install' and try running it and try to connect to the 
> local Xen host and get:
>  Unable to open a connection to the Xen hypervisor/daemon.
> 
>  Verify that:
>   - A Xen host kernel was booted
>   - The Xen service has been started
> 
> I have verified that I'm booted in Xen and that xend has been started. 
> 
> here's my log:
> blade06:~:) cat .virt-manager/virt-manager.log
> Thu, 09 Nov 2006 16:42:16 WARNING  No support for gnome-keyring
> Thu, 09 Nov 2006 16:42:16 WARNING  Could not connection to session bus, 
> disabling DBus service exceptions.RuntimeError DBus session/starter bus 
> address not defined
> Thu, 09 Nov 2006 16:42:34 ERROR    Unable to open connection to 
> hypervisor URI 'xen': libvirt.libvirtError virConnectOpenReadOnly() 
> failed no support for hypervisor

Check the /etc/xen/xend-config.sxp file. Is it configured to have either
of these settings set to yes:

(xend-http-server yes)
(xend-unix-server yes)

I strongly recommend setting unix to yes & http to no nbecause http
server has *zero* authentication :-(

Once you've done this, also make sure that $prefix/libexec/libvirt_proxy
is made setuid root - this allows virt-manager to run as an unprivileged
user in read-only mode. You still need to run virt-manager as root if 
you want to do read-write operations.

Regards,
Dan.
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