create_vm.sh

create_vm.sh

#!/bin/bash -eux
ARCH=${1:-arm64}
IMAGES=/home/ubuntu/images
URL=https://cloud-images.ubuntu.com/jammy/current/jammy-server-cloudimg-${ARCH}.img
LIBVIRT_IMAGES=/var/lib/libvirt/images

if ! [[ -d $LIBVIRT_IMAGES ]]; then
    sudo apt install -y virtinst libvirt-daemon-system cloud-image-utils
    sudo usermod -a -G libvirt-qemu $USER
    newgrp libvirt-qemu
fi

sudo chown $USER:$USER $LIBVIRT_IMAGES

if ! [[ -e ${IMAGES}/`basename $URL` ]]; then
    mkdir -p ${IMAGES}
    wget -O ${IMAGES}/`basename $URL` $URL
    sudo cp ${IMAGES}/`basename $URL` ${LIBVIRT_IMAGES}
fi

for NAME in testvm{1..2}; do
    ROOT_IMG=${LIBVIRT_IMAGES}/${NAME}.img
    SEED_IMG=${LIBVIRT_IMAGES}/${NAME}-seed.img

    sudo rm -f ${ROOT_IMG} ${SEED_IMG}
        cat <<- EOF > user-data.${NAME}
	#cloud-config
	user: ubuntu
	password: ubuntu
	hostname: ${NAME}
	ssh_import_id: [hopem, joalif]
	chpasswd: { expire: False }
	ssh_pwauth: True
	users:
	  - name: ubuntu
	    sudo: ALL=(ALL) NOPASSWD:ALL
	packages:
	 - arp-scan
	 - ipcalc
	 - iperf3
	apt_get_upgrade_subcommand: "dist-upgrade"
	package_upgrade: True
	manage_etc_hosts: True
	EOF

    touch meta-data.${NAME}

    cloud-localds ${SEED_IMG} user-data.${NAME} meta-data.${NAME}
    qemu-img create -F qcow2 -b ${LIBVIRT_IMAGES}/`basename $URL` -f qcow2 ${ROOT_IMG} 30G

    virsh destroy ${NAME} || true
    virsh undefine ${NAME} --nvram || true
    virt-install \
        --name=${NAME} \
        --osinfo=ubuntujammy \
        --connect=qemu:///system --ram=8192 --cpu host-passthrough --vcpus=8 --hvm \
        --virt-type=kvm \
        --boot hd \
        --graphics vnc --noautoconsole --os-type=linux --accelerate \
        --disk=${ROOT_IMG},bus=virtio,sparse=true \
        --disk=${SEED_IMG},bus=virtio,format=raw \
        --network=network=default,model=virtio \
        --print-xml > domain.xml

    virsh define domain.xml
done