Launch Ubuntu Instance on KVM

export VMNAME=instance01
export MAC_ADDR=$(printf '52:54:00:%02x:%02x:%02x' $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)))
export INTERFACE=enp1s0
export IP_ADDR=192.168.122.101

export CONFIG_DIR=/home/bitvizor.com/.local/share/libvirt/cloudconfigs/
export IMAGES_DIR=/home/bitvizor.com/.local/share/libvirt/images/

export SSH_KEYS=ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQDVtvTtRd3zOAo5bSgRR7muNdHTFeZg1RhxNkcl24W0ZfKTvLd1HWhL4LEvVjUwQY1xvPaEKiyCXIYf18feIy15KW3oBj4mqEk+YsUbTMSoV32DnMUyhDfoPKM4gOXMYRbliKr2mQ5RX6pEgm2H4mzI+kC6+f8v+/Fn6o6zOwgfo0ltbHfCH31YW1i+DIZtJ6/iWCzLJ7fDvRJW/YKH0DXOJQxaX4k9J7aGjjs8dXdJANtIgT4doa6ZpKTDh36sgBTsAlYQAnnH9DJxv71sRHSnXyzhjrgkkgkKbeG/GZy7Lr3fH/hqEc3P4DE8c7waAySNMOGThbVqx95uwNGSQa6XO3UsDxzg2NTuqmUqlOUQRAyLkteCOpAyd/8YUREriVotFKJGTIJTMo/7TnrPk5VpNQb/BQlGN12z0uQg8GkS88DlefPnDvdGpxemVBXAxtNscYfpoJzwB7H2kcfUeIrzJki929G/CI4K+A3K2i6v7dGXKgHlIbLGDCh3hgHF1a0= vasops@vasops


# Prepare primary disk image 
cp /home/bitvizor.com/focal-server-cloudimg-amd64.img ${IMAGES_DIR}/${VMNAME}-disk.qcow2 
qemu-img resize ${IMAGES_DIR}/${VMNAME}-disk.qcow2 20G


# Create cloud-init configuration for VM 

mkdir -p ${CONFIG_DIR}/${VMNAME}
cat > ${CONFIG_DIR}/${VMNAME}/network-config <<EOF
ethernets:
    $INTERFACE:
        addresses: 
        - $IP_ADDR/24
        dhcp4: false
        gateway4: 192.168.122.1
        match:
            macaddress: $MAC_ADDR
        nameservers:
            addresses: 
            - 1.1.1.1
            - 8.8.8.8
        set-name: $INTERFACE
version: 2
EOF

cat > ${CONFIG_DIR}/${VMNAME}/user-data <<EOF
#cloud-config
hostname: ${VMNAME}
manage_etc_hosts: true
users:
  - name: vasops
    sudo: ALL=(ALL) NOPASSWD:ALL
    groups: users, admin
    home: /home/vasops
    shell: /bin/bash
    lock_passwd: false
    ssh_authorized_keys: 
      - ${SSH_KEYS}
ssh_pwauth: true
disable_root: false
chpasswd:
  list: |
    vasops:vasops
  expire: false
EOF

touch ${CONFIG_DIR}/${VMNAME}/meta-data

# Create cloud-init disk 
cloud-localds -v --network-config=${CONFIG_DIR}/${VMNAME}/network-config ${IMAGES_DIR}/${VMNAME}-seed.qcow2 ${CONFIG_DIR}/${VMNAME}/user-data ${CONFIG_DIR}/${VMNAME}/meta-data

# Launch the instance 

virt-install --virt-type kvm --name ${VMNAME} \
	--ram 4096 --vcpus=4 --os-type linux --os-variant ubuntu20.04 \
	--disk path=${IMAGES_DIR}/${VMNAME}-disk.qcow2,device=disk \
	--disk path=${IMAGES_DIR}/${VMNAME}-seed.qcow2,device=disk \
	--import --network network=default,model=virtio,mac=$MAC_ADDR \
	--noautoconsole --nographics 





# Destroy everything 

virsh destroy ${VMNAME}
virsh undefine ${VMNAME}
rm -rf ${IMAGES_DIR}/${VMNAME}-*
rm -rf ${CONFIG_DIR}/${VMNAME}