Libvirt vacuum cleaner

libvirt-vacuum.sh

#!/bin/bash
set -u

EXCLUDE_PATTERN="jenkins-swarm|hana_cockpit|nfs-|angi"
VOLUME_POOLS=(default terraform)

# most code borrowed from https://github.com/openshift/installer scripts

printf 'Warning: This will destroy effectively all libvirt resources\nContinue [yN]? '
read -r CONTINUE
if test "${CONTINUE}" != y -a "${CONTINUE}" != Y
then
      echo 'Aborted' >&2
      exit 1
fi

for DOMAIN in $(virsh list --all --name | egrep -vi "$EXCLUDE_PATTERN"); do
    virsh destroy "$DOMAIN"; virsh undefine "$DOMAIN"
done

for POOL in "${VOLUME_POOLS[@]}"; do
    virsh vol-list "$POOL" | egrep -vi "$EXCLUDE_PATTERN" | tail -n +3 | while read -r VOLUME _
    do
        if test -z "${VOLUME}"; then continue; fi
        virsh vol-delete --pool "$POOL" "$VOLUME"
    done
done

for NET in $(virsh net-list --all --name | egrep -vi "$EXCLUDE_PATTERN"); do
    if test "${NET}" = default; then continue; fi
    virsh net-destroy "${NET}"
    virsh net-undefine "${NET}"
done