E.G. to boot 20 instances
openstack server create --user-data isen-postinstall.sh --min 20 --max 20 --flavor d2-4 --image 'Debian 11' --net Ext-Net --key-name arnaud-choupinette isen
Then copy/paste openrc files into the servers so that students can do
source /root/openrc
Clean the project:
openstack keypair list -f value -c Name | xargs openstack keypair delete