We have completed the rebuild of Lab 2 into a dedicated Kubernetes practice environment with 120 isolated clusters.
Each learner on the DevOps, SRE and CKA tracks now receives a private cluster for the duration of their programme, available 24 hours a day.
Isolated clusters let us run destructive break-fix drills — deliberately corrupting etcd, exhausting node resources, breaking network policy — without affecting anybody else's environment.