[libvirt-users] How to change the default connection of 'virsh' tool from 'qemu' to 'xen' ?

[Erik Skultety]

On Wed, Oct 31, 2018 at 05:33:09PM +0100, Martin Kletzander wrote:
> On Wed, Oct 31, 2018 at 09:32:30AM +0100, Andrea Bolognani wrote:
> > On Wed, 2018-10-31 at 10:56 +0900, Minjun Hong wrote:
> > > Hi.
> > >
> > > Thanks to help of this mailing list (especially Jim Fehlig), I have finished setup of libvirt.
> > > However, there is something weird. It is that I installed libvirt on 5 servers but
> > > the default connection of one of them is 'qemu:///' even if those of the others are all 'xen:///'.
> >
> > You probably installed the QEMU driver on that one server only: if
> > that's indeed the case, the easiest way to fix the inconsistency
> > would be to uninstall it.
> >
> > If that fails...
> >
> > > I searched how to change it but, I only found a bypass adding " LIBVIRT_DEFAULT_URI='xen:///' " in my .bashrc file.
> > > Currently, value of the variable (LIBVIRT_DEFAULT_URI) is set to 'qemu:///'.
> > > Since the bypass makes the virtualization type of the server visible 'qemu' to the open stack, I have to change libvirt configuration.
> > >
> > > I also checked some configure files under '/etc/libvirt', such as libvirt.conf, libvirtd.conf and libxl.conf.
> > > But I have no idea, how and what to change.
> > > Please give me some advise. It will be a big help for me.
> >
> > ... you can simply set
> >
> >  uri_default = "xen:///"
> >
> > in /etc/libvirt/libvirt.conf to change the system-wide default URI
> > without having to mess with environment variables.
> >
>
> Or in .config/libvirt/libvirt.conf for a non-root user.

Alternatively, you can set the following env variable in your .bashrc to the
desired URI:

LIBVIRT_DEFAULT_URI

Erik