Fine-tuning Linux Templates

Use a kernel purpose-built for virtualization

The linux-image-kvm kernel is designed specifically for KVM virtualization, making it the optimal choice.

As an example, on Ubuntu, you would run the following commands:

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

Perform cleanup before publishing a template

# clears out log entries
journalctl --vacuum-size=1
# wipes command history
history -c

(run as root) rm /root/.bash_history