Kubernetes Fundamentals

Control Plane Foundations Lab

Week-by-week drills on API server behavior, etcd snapshots, and upgrade sequencing for teams inheriting mid-size clusters.

Duration: 4 weeks
Format: Cohort live online
Tuition (informational): 920,000 KRW

This program anchors operational judgment: when to cordon nodes, how to validate admission changes, and how to rehearse upgrades without surprising workload owners. Labs mirror a three-environment promotion path with guarded rollbacks and documented checkpoints.

What is included

Live-taught cohort sessions with shared screen and command replay
Scenario notebooks that mirror incident retrospectives
Checklists for kube-apiserver flags and extension API availability
Hands-on etcd backup/restore with verification gates
Admission webhook dry-runs before policy changes land
Certificate rotation rehearsal with downtime budgets
Office hours focused on operational decision logs

Outcomes

Document a defensible upgrade path for a running cluster
Produce a rollback card tied to each promotion step
Explain API server failure modes to application stakeholders

Lead instructor

Mina Cho

Former platform lead for a Seoul SaaS shop; prefers tight runbooks over hero debugging.

Participant notes

“The admission dry-run module finally made webhook failures predictable instead of mysterious 500s.”

— Hyeon , Systems engineer · 5/5 · survey
“Upgrade rehearsal felt close to how we actually promote—minus the pager dread.”

— Rina · Regional logistics SaaS

Common questions

Do I need admin access to my employer cluster?

No. You receive a dedicated lab namespace and cluster-admin in the sandbox only. Employer clusters are out of scope for liability reasons.

What is not included?

We do not tune third-party ingress controllers for your production topology; the focus stays on core control plane mechanics.

How large are cohorts?

We cap each cohort at eighteen participants so instructors can review every promotion exercise.

Refund rules live under Returns & Refunds. No payments are processed on this marketing site.

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