beginner · ~8 min

Launch day

The site goes on the front page in an hour. Three pods will not be enough; six should be.

Scaling a deployment is changing one number. kubectl scale changes it imperatively — quick, but the change lives only in the cluster. Editing the manifest and applying it changes the record too, so the next person to apply the file does not quietly scale you back down.

Objectives

Run 6 ready replicas of web
The Service routes to all 6
Bonus: Scale declaratively: apply a manifest that says replicas: 6

Best on a computer with a keyboard. It works on a phone, with shortcuts under the terminal.