Customising Linux Templates

Select a kernel optimised for virtualisation

Opt for the linux-image-kvm kernel, which is purpose-built for KVM virtualisation.

In Ubuntu, for instance, you can run these commands:

apt install linux-image-kvm
apt purge linux-image-generic

Do a cleanup before publishing the template

# removes logs
journalctl --vacuum-size=1
# removes user history
history -c

(as root) rm /root/.bash_history