Show me how gave the commands the audit runs: sed, awk and yq edits,
heredoc manifests, JSON patches, --overrides, sleeps and wait loops -
nothing anyone types in the exam. A step's show is now a list of
parts (sim/bank.py): cmd() is what you type as it stands; hand() is
what you do by hand - vim on a generated skeleton or on a manifest
pasted from the docs page it names, kubectl edit, ssh NODE and sudo
-i, a value you read and echo - with a script that does the same for
the audit. All 135 CKA steps are rewritten so, with k for kubectl;
their checks, titles and texts are unchanged.
Add ./ksim lesson lint, which reads what every step has you type and
flags scripts. The lesson audit runs it first.
Record the hosts whose setup failed when a session started. The page
warns above that task or lesson and offers Rebuild this host; the CLI
names ./ksim reset N on each step.
Render *italics* in lessons and tasks, outside code spans.
Audited on v1.37: CKA lessons 27/27, 135/135 steps, done the exam
way; lint clean. kubectl edit --subresource resize, the one edit the
audit replaces with a patch, was proven on its own.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The desktop failed to start in a browser that had cached noVNC 1.6
from the Debian desktop image: its vnc.html, which has no clipboard
Clear button, ran the Ubuntu image's 1.3 ui.js, which wires one up
and threw "Cannot read properties of null". websockify sends only
Last-Modified, so browsers cache noVNC on a guess, and it answers a
revalidation with 304 when the file on disk is older than the copy.
Serve noVNC through websockify-no-store, which adds Cache-Control:
no-store to every response, and from /novnc/ rather than /, so no
browser holds a stale copy at the paths the desktop now uses.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Add lessons: untimed guided labs, one per curriculum objective, on a
host of their own, in the browser and in the terminal. Each step has
a check, a hint and its commands; a lesson writes no history or
scores, only a done mark on its objective. CKAD 2.1-2.4 (24 steps)
and all 27 CKA objectives (135 steps) have one, and `./ksim lesson
audit` proves that every step fails, is done by its own commands,
then passes.
Add CKA tasks 132-147 (cka/bank_course.py) on what a full CKA course
teaches beyond the bank: a real upgrade from v1.36, a drain under a
PodDisruptionBudget, QoS and eviction, in-place resize, kube-proxy's
chains, encryption at rest, an operator, and CSI expansion, snapshots
and clones (ensure_csi_hostpath).
Move CKA and CKS to Kubernetes v1.37 and rebuild the hosts on Ubuntu
24.04, with kubelet, kubeadm and kubectl as held packages from
pkgs.k8s.io; the desktop runs Ubuntu too. Hosts gain man pages,
hexdump and xxd.
Fix CKS Q4, which gave 3 of 12 points untouched, and CKA Q4 and Q49,
whose solutions raced their new CRD.
Audited on v1.37: CKA 147/147, CKAD 105/105, CKS 109/110 (Q103, a
Falco task, failed to seed once and awaits a re-audit); lessons: 135
of 135 CKA steps and 24 of 24 CKAD steps.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
kubestronaut-sim runs each exam task on a host of its own - a kind (kubeadm)
cluster in rootless podman, or a QEMU/KVM Ubuntu VM for the CKS tasks that
need their own kernel (Falco, AppArmor) - and puts a browser desktop in front
of them, the way killer.sh and sailor.sh do.
- ksim, sim/: the engine (sessions, drills, study mode, grading, coverage,
audit), host and VM lifecycle, the desktop
- images/: exam host images (common, CKS variant with its tools, VM guest)
- cka/ (131 tasks), ckad/ (105), cks/ (110): task banks, curricula with
study notes, reference solutions and scripted solutions
Every domain of every track has at least 17 pool tasks. `./ksim audit` proves
a task three ways: it seeds cleanly on its own host, scores nothing before
anyone has worked on it, and reaches full marks when its scripted solution is
run on the host as `candidate`. All 346 tasks pass (CKA audited 2026-10-13,
CKAD and CKS 2026-10-12).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JZPd3GGWyxTgAkL6a4gAJz
