--location

An install method must be specified
(--location URL, --cdrom CD/ISO, --pxe, --import, --boot hd|cdrom|...)

ERROR    Error validating install location: Could not find an installable distribution at '/var/lib/libvirt/images/ubuntu-20.10-minimal-cloudimg-amd64.img'

The location must be the root directory of an install tree.
See virt-install man page for various distro examples.

gcloud kms keyrings create your-keyring --location global
curl -L

See also

• virt-install, --disk, --import, --arch, --extra-args, --graphics, --network (KVM), --location, --cloud-init, --virt-type
• KVM, Installation, QEMU, virsh, virtinst, libguestfs-tools, libvirt, qemu, Red Hat Virtualization (RHV), MacVTap, Virtio, oVirt, KVM services, KVM networking, KVM graphics, CPU, KVM on ARM