sysadmin/createVM/script.sh

#!/bin/bash

SCRIPT_PATH=/home/tzenet/createVM

source $(pwd)/vars

# Get the cloud image
cd /var/lib/libvirt/boot
wget $CLOUD_IMAGE_URL

mkdir -pv $DIR/$VM_NAME
cd $DIR/$VM_NAME

# Create meta-data file

# Create user-data file
# For this step you need to have an ssh key-pair
cp ${SCRIPT_PATH}/user-data $DIR/$VM_NAME/
cp ${SCRIPT_PATH}/meta-data $DIR/$VM_NAME/

# Validate user-data for syntax errors if any
cloud-init devel schema --config-file user-data

# Copy cloud image
cp -v /var/lib/libvirt/boot/$CLOUD_IMAGE $VM_NAME.qcow2

#Create disk
cd $DIR/$VM_NAME
qemu-img create -f qcow2 -o preallocation=metadata $VM_NAME.new.image ${DISK_SIZE}G
virt-resize --quiet --expand /dev/sda1 $VM_NAME.qcow2 $VM_NAME.new.image
mv -f $VM_NAME.new.image $VM_NAME.qcow2

# Create a cloud-init iso
mkisofs -o $VM_NAME-cidata.iso -V cidata -J -r user-data meta-data

# Create a pool
virsh pool-create-as --name $VM_NAME --type dir --target $DIR/$VM_NAME

# Create the VM
cd $DIR/$VM_NAME
virt-install --import --name $VM_NAME \
	--ram $VM_MEMORY --vcpus $VM_VCPUS \
	--os-type=Linux --os-variant=centos8 \
	--disk $VM_NAME.qcow2,format=qcow2,bus=virtio \
       	--disk $VM_NAME-cidata.iso,device=cdrom \
	--network=bridge:br0,model=virtio --graphics none \
	--mac $VM_MAC

# Remove unwanted files

cd $DIR/$VM_NAME
virsh change-media $VM_NAME sda --eject --config
rm -v meta-data user-data $VM_NAME-cidata.iso

echo "This is the end"