Since version 4.0 LXD also natively supports virtual machines and thanks to a built-in agent, they can be used almost like containers.
lxc image list images: | grep VIRTUAL-MACHINE lxc launch images:ubuntu/21.04 vm2104 --vm lxc launch images:ubuntu/21.04/cloud vm2104c --vm
Links
https://linuxcontainers.org/lxd/getting-started-cli/#launch-a-virtual-machine
OpenStack admin
openstack image set --property hw_qemu_guest_agent=yes ${IMAGE_ID}
Within the VM
# check whather hw_qemu_guest_agent is enabled ls -l /dev/virtio-ports/org.qemu.guest_agent.0 # install qemu-guest-agent sudo apt-get install -y qemu-guest-agent
supported_commands
docker exec -ti nova_libvirt virsh qemu-agent-command instance-000069d9 '{"execute":"guest-info"}'
Execute command
openstack server show d82ca1de-1fcd-4ca6-84db-84891ec37796 -c OS-EXT-SRV-ATTR:hypervisor_hostname -c OS-EXT-SRV-ATTR:instance_name docker exec -ti nova_libvirt virsh qemu-agent-command instance-000069d9 '{"execute":"guest-network-get-interfaces"}'
Links
https://www.sebastien-han.fr/blog/2015/02/09/openstack-perform-consistent-snapshots-with-qemu-guest-agent/
https://www.ovh.com/blog/create-and-use-openstack-snapshots/
http://wiki.stoney-cloud.org/wiki/Qemu_Guest_Agent_Integration