vm.sh

#!/bin/bash

set -x
set -e

if [[ $(id -u) != 0 ]]; then
    sudo $(realpath $0) $@
    exit
fi

VIRSH='virsh --connect qemu:///system'
CLONE='virt-clone --connect=qemu:///system'

IMAGES_DIR="/home/libvirt/images"

ACTION=$(basename $(realpath $0))
VMNAME=$1


case "${ACTION}" in
    "run")
        test -n "${VMNAME}"

        ${CLONE} --original template --name "${VMNAME}" --file "${IMAGES_DIR}/${VMNAME}.img"

        for i in `seq 2 100`; do
            if ! ${VIRSH} net-dhcp-leases local | grep "192\.168\.99\.$i"; then
                IP="192.168.99.$i"
                break
            fi
        done

        MAC=$(${VIRSH} dumpxml "${VMNAME}" | grep "mac address" |sed "s/.*mac address='\(.*\)'\/>/\\1/")

        ${VIRSH} net-update local add ip-dhcp-host "<host mac='${MAC}' name='${VMNAME}' ip='${IP}'/>" --live --config
        echo "${IP} ${VMNAME}" | sudo tee -a /etc/hosts

        ${VIRSH} start "${VMNAME}"
        ;;
    "rmvm")
        test -n "${VMNAME}"

        MAC=$(${VIRSH} dumpxml "${VMNAME}" | grep "mac address" |sed "s/.*mac address='\(.*\)'\/>/\\1/")
        sudo sed -i "/ ${VMNAME}\$/d" /etc/hosts
        ${VIRSH} net-update local delete ip-dhcp-host "<host mac='${MAC}' name='${VMNAME}'/>" --live || true
        ${VIRSH} net-update local delete ip-dhcp-host "<host mac='${MAC}' name='${VMNAME}'/>" --config || true
        ${VIRSH} destroy "${VMNAME}" || true
        ${VIRSH} undefine "${VMNAME}" --remove-all-storage
        ;;

    "rerun")
        test -n "${VMNAME}"

        BASEDIR=$(dirname $(realpath $0))

        ${BASEDIR}/rmvm "${VMNAME}"
        ${BASEDIR}/run "${VMNAME}"
        ;;
esac