vumast3r/cka-sim
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat(ckad): add Simulator Set A, a 20-task killer.sh-style mock

Browse Source 
A fixed CKAD set (ids 38-57, 140 points, 120 minutes), run with
`./exam sim a`. It is kept out of the random pool, so reruns are
comparable. The scenarios are original - a fictional river-freight company,
one Namespace per river - and practise the techniques the killer.sh CKAD
environment is known for without reusing its questions: exact names and
file outputs, commands written to scripts, several steps per task.

It covers what the pool never asks: debugging a container with no shell
through an ephemeral container (the value lives only in the process's
environment), a Kustomize patch with a hashed configMapGenerator, a Helm
release stuck in `failed`, a CronJob run by hand while suspended, fsGroup
on a shared volume, RBAC proven by the app's own log, Pods rejected by a
LimitRange, and the two-source NetworkPolicy trap (enforced by kindnet).

Verified on a throwaway cluster: every task scores 0 untouched and 7/7 when
solved, and a full sitting (baseline, seed all 20, solve, grade at the end)
scored 140/140 twice on the final code.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VchE1CFkJqwYhXSMTPZUtD
This commit is contained in:
vumast3r 2026-09-26 18:14:12 -06:00
parent e6ee219dfc
commit d3788be5e2
3 changed files with 1240 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
README.md
View File

@ -5,8 +5,8 @@ Entry point is `./exam` (renamed from `cka-sim` so it can't collide with the dir
Hands-on exam tasks graded **per check** against a real cluster, an exam clock, a browser
front end modelled on the real PSI exam, attempt history, and drills that rotate through the
domains before you sit a full exam. Tracks: **CKA** (102 tasks: a random pool of 43 normal +
24 hard, plus two fixed simulator sets, C and D, of 18 and 17 tasks), **CKAD** (37 tasks, at
least one for every competency in the curriculum) and CKS (scaffolded — same format, add
24 hard, plus two fixed simulator sets, C and D, of 18 and 17 tasks), **CKAD** (37 pool tasks, at
least one for every competency in the curriculum, plus a 20-task killer.sh-style Set A) and CKS (scaffolded — same format, add
questions when you get there).
## How a session is built
@ -93,6 +93,14 @@ A few tasks need more than kubectl on this machine: `podman` (Q13 builds an imag
(Q6, Q21), and network access the first time Q23 runs on a fresh cluster (it installs
metrics-server). Drill a domain with `./exam --track ckad drill ENV`, as for CKA.
**Simulator Set A** (`./exam --track ckad sim a`): 20 original killer.sh-style tasks, 140 points,
120 minutes, exam rules - a fixed set (ids 38-57) kept out of the random pool, so reruns are
comparable. Riverline, a fictional river-freight company, one Namespace per river. Expect several
steps per task, exact names and file outputs, and a few things the pool never asks: debugging a
container with no shell through an ephemeral container, a Kustomize patch with a hashed
configMapGenerator, a Helm release stuck in `failed`, fsGroup on a shared volume, and the
two-source NetworkPolicy trap.
## Scoring, history, drills
Each task is a list of named, weighted checks (`tracks/cka/questions.py`). You get the points

1223
tracks/ckad/bank_sim_a.py Normal file
View File

File diff suppressed because it is too large Load Diff

11
tracks/ckad/questions.py
View File

@ -1,5 +1,5 @@
"""CKAD track: 37 tasks, at least one per competency in the CKAD curriculum (1-12 here, 13-37 in
bank_extra.py). Same format as the CKA banks.
"""CKAD track: 37 pool tasks, at least one per competency in the CKAD curriculum (1-12 here, 13-37
in bank_extra.py), plus Simulator Set A (38-57, bank_sim_a.py). Same format as the CKA banks.
CKAD is a build-things exam: less cluster surgery, more "produce the right object, fast".
The clock is the adversary, so these are mostly single-object tasks graded exactingly.
@ -22,6 +22,8 @@ TRACK = {
# 8/7/7/10/5, so no two mocks are the same set.
"quota": {"DESIGN": 3, "DEPLOY": 3, "OBS": 3, "ENV": 4, "NET": 3},
"quota_hard": {"DESIGN": 3, "DEPLOY": 3, "OBS": 3, "ENV": 4, "NET": 3},
# fixed simulator sets (./exam sim a) - excluded from random sampling
"sets": {"a": "Simulator Set A (killer.sh-style)"},
}
QUESTIONS = [
@ -579,6 +581,7 @@ EOF
]
# 13-37: the rest of the curriculum, one or more tasks per competency the starter bank left out.
from tracks.ckad import bank_extra # noqa: E402
# 38-57: Simulator Set A, a fixed killer.sh-style mock. Numbering is contiguous - keep it that way.
from tracks.ckad import bank_extra, bank_sim_a # noqa: E402
QUESTIONS = QUESTIONS + bank_extra.QUESTIONS
QUESTIONS = QUESTIONS + bank_extra.QUESTIONS + bank_sim_a.QUESTIONS