virt-launcher

Launch virtual machine from cloud image using libvirt.

dependencies

• qemu-img
• virt-install
• virsh

example

# `sudo` to create file in /var/lib/libvirt/images
# `-E` to keep HOME env and cache files in $HOME/.cache
sudo -E ./virt-launcher -d \
  -n testing \
  -cpu 2 \
  -mem 4096 \
  -s 50G \
  -os debian12 \
  -key "$(cat .ssh/id_ed25519.pub)"

cloud image

https://docs.openstack.org/image-guide/obtain-images.html

• archlinux: https://geo.mirror.pkgbuild.com/images/
• centos7.0: https://cloud.centos.org/centos/7/images/
• centos-stream8: https://cloud.centos.org/centos/8-stream/x86_64/images/
• centos-stream9: https://cloud.centos.org/centos/9-stream/x86_64/images/
• debian10: https://cdimage.debian.org/images/cloud/buster/
• debian11: https://cdimage.debian.org/images/cloud/bullseye/
• debian12: https://cdimage.debian.org/images/cloud/bookworm/
• ubuntu18.04: https://cloud-images.ubuntu.com/bionic/
• ubuntu20.04: https://cloud-images.ubuntu.com/focal/
• ubuntu22.04: https://cloud-images.ubuntu.com/jammy/
• ubuntu24.04: https://cloud-images.ubuntu.com/noble/

known issues

• Failed to start sshd service in archlinux:
  https://gitlab.archlinux.org/archlinux/arch-boxes/-/issues/158
• Timeout 90s for systemd-journal-flush.service on centos-stream8 boot:
  Failed to start Flush Journal to Persistent Storage.