Fine-Tuning Linux Templates

Use a kernel optimized for virtualization

Work with  linux-image-kvm, a kernel specifically built for KVM virtualization.

For instance, on an Ubuntu system, you should run these commands:

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

Tidy up before publishing a template

# clears logs
journalctl --vacuum-size=1
# wipes user history
history -c

(as root) rm /root/.bash_history