[libvirt-users] How to change the default connection of 'virsh' tool from 'qemu' to 'xen' ?
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:///'. 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. Thanks.
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. -- Andrea Bolognani / Red Hat / Virtualization
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.
-- Andrea Bolognani / Red Hat / Virtualization
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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
On Thu, 2018-11-01 at 16:40 +0100, Erik Skultety wrote:
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:
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
... Which, as you can see above, is exactly what OP is already doing and what they're looking for an alternative to ;) Also note that, at least as far as I understand, they want to make sure the xen:/// default URI is picked up by an high-level management application (in this case OpenStack), which suggests the new default should be set globally rather than per-user, which is the reason why I didn't mention the approach Martin suggested. I still believe the best solution is to just uninstall the QEMU driver so that everything will work as expected without having to mess with configuration files at all. Let's wait for OP to try either approach out and report back :) -- Andrea Bolognani / Red Hat / Virtualization
On Thu, Nov 01, 2018 at 05:20:46PM +0100, Andrea Bolognani wrote:
On Thu, 2018-11-01 at 16:40 +0100, Erik Skultety wrote:
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:
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
... Which, as you can see above, is exactly what OP is already doing and what they're looking for an alternative to ;)
Aaand I obviously should learn again how to read, sorry...
Also note that, at least as far as I understand, they want to make sure the xen:/// default URI is picked up by an high-level management application (in this case OpenStack), which suggests the new default should be set globally rather than per-user, which is the reason why
Yeah, agreed. Erik
participants (4)
-
Andrea Bolognani -
Erik Skultety -
Martin Kletzander -
Minjun Hong