Kubernetes micro-demos

This is a collection of highly-targetted demonstrations of Kubernetes features. The demos are all text-based and automated, making them perfect for customer meetings, meetups, or just showing off to your colleagues.

Running the demos

To run these demos you need pv and tmux installed, and you need kubectl in your PATH.

Some of the demos try to act in faster-than-real time. For best results:

• SSH to your kubernetes-master and set the following flags (in this order):
  • kube-controllermanager: --pod-eviction-timeout=10s

Before running a demo, make sure your cluster is demo-ready. The reset.sh script is provided for that.

Writing new demos

Each demo lives in its own directory. The bulk of the logic lives in util.sh.

Demos should be small and focused - 2 to 3 minutes each.

Demos should be repeatable. Make sure you are not relying on timing effects. If you need to sleep, you might have a problem.

Demos should be self-contained. If you are depending on something being done before-hand, don't. Do it in the demo script.

Demos should be single-terminal. Use tmux to split the window to show multiple parallel things.