11:23 a.m.
We install libvirt in a AlmaLinux 9 Kickstart file. The version of libvirt we are using
is 10.0.0.
What we'd like to do is to statically define a network in the kickstart file without
having to run `virsh net-define`. In other words, we had hoped that by installing a
<network>.xml file in /usr/share/libvirt/networks, that that network would be
recognized by libvirt the first time the system is booted. This does not appear to be the
case.
Is there a way to statically define libvirt networks without needing to run 'virsh
net-define'?
Thanks
5:42 a.m.
On Tue, Jun 11, 2024 at 04:23:33PM GMT, richard.schmitt--- via Users wrote:
We install libvirt in a AlmaLinux 9 Kickstart file. The version of
libvirt we are using is 10.0.0.
What we'd like to do is to statically define a network in the
kickstart file without having to run `virsh net-define`. In other
words, we had hoped that by installing a <network>.xml file in
/usr/share/libvirt/networks, that that network would be recognized
by libvirt the first time the system is booted. This does not
appear to be the case.
Is there a way to statically define libvirt networks without
needing to run 'virsh net-define'?
You need to install the file in /etc/libvirt/qemu/networks instead.
If you want the network to be autostarted, you also need to create a
symlink in /etc/libvirt/qemu/networks/autostart that points to the
network XML and has a matching name.
--
Andrea Bolognani / Red Hat / Virtualization
8:28 a.m.
On 6/12/24 6:42 AM, Andrea Bolognani wrote:
On Tue, Jun 11, 2024 at 04:23:33PM GMT, richard.schmitt--- via Users
wrote:
> We install libvirt in a AlmaLinux 9 Kickstart file. The version of
> libvirt we are using is 10.0.0.
>
> What we'd like to do is to statically define a network in the
> kickstart file without having to run `virsh net-define`. In other
> words, we had hoped that by installing a <network>.xml file in
> /usr/share/libvirt/networks, that that network would be recognized
> by libvirt the first time the system is booted. This does not
> appear to be the case.
>
> Is there a way to statically define libvirt networks without
> needing to run 'virsh net-define'?
You need to install the file in /etc/libvirt/qemu/networks instead.
If you want the network to be autostarted, you also need to create a
symlink in /etc/libvirt/qemu/networks/autostart that points to the
network XML and has a matching name.
Note that if you do this, you'll need to "preprocess" the .xml file by
net-define'ing it on some system so that all the necessary elements are
there, and then using the resulting xml rather than your original - for
example, each network must have a <uuid> element, but that is usually
filled in automatically when the network is net-defined.
Also, if you do this keep in mind that the fact that these files are
currently in /etc/libvirt/qemu/networks is not a part of libvirt's
public API - it could be changed at any time by an update (although this
has never happened). The same is true for all other .xml files in
/etc/libvirt; only the .conf files are public.
8:53 a.m.
On Thu, Jun 13, 2024 at 09:28:08AM GMT, Laine Stump wrote:
On 6/12/24 6:42 AM, Andrea Bolognani wrote:
> On Tue, Jun 11, 2024 at 04:23:33PM GMT, richard.schmitt--- via Users wrote:
> > Is there a way to statically define libvirt networks without
> > needing to run 'virsh net-define'?
>
> You need to install the file in /etc/libvirt/qemu/networks instead.
> If you want the network to be autostarted, you also need to create a
> symlink in /etc/libvirt/qemu/networks/autostart that points to the
> network XML and has a matching name.
Note that if you do this, you'll need to "preprocess" the .xml file by
net-define'ing it on some system so that all the necessary elements are
there, and then using the resulting xml rather than your original - for
example, each network must have a <uuid> element, but that is usually filled
in automatically when the network is net-defined.
That used to be true, but after [1] that's no longer the case. As
long as the XML file you drop into the directory is roughly
equivalent to src/network/default.xml.in everything is going to work
just the way you'd expect it to.
Also, if you do this keep in mind that the fact that these files are
currently in /etc/libvirt/qemu/networks is not a part of libvirt's public
API - it could be changed at any time by an update (although this has never
happened). The same is true for all other .xml files in /etc/libvirt; only
the .conf files are public.
Fair disclaimer.
[1]
https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/EZ...
--
Andrea Bolognani / Red Hat / Virtualization
192
days inactive
194
days old
3 comments
3 participants
participants (3)
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Andrea Bolognani -
Laine Stump -
richard.schmitt＠starlab.io