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chore: update drill history and weak-spots from today's ARCH/TSHOOT sessions

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Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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vumast3r 2026-09-13 15:53:04 -06:00
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{"at": "2026-09-06T22:07", "mode": "drill", "hard": false, "ids": [1, 5, 6, 34, 41], "score_pct": 8.0, "earned": 2, "total": 25, "time_used": 432, "pauses": 0, "paused_seconds": 0, "results": {"1": {"pass": false, "earned": 2, "total": 6, "failed": ["ServiceAccount rbac-app/deploy-bot exists", "Role deploy-manager and RoleBinding deploy-bot-binding exist", "deploy-bot can get/list/watch/create/update/patch/delete deployments"]}, "5": {"pass": false, "earned": 0, "total": 5, "failed": ["manifest containing static-web is in /etc/kubernetes/manifests on the node", "mirror pod static-web-<node> is Running", "image is nginx:1.27"]}, "6": {"pass": false, "earned": 0, "total": 6, "failed": ["apiserver-expiry.txt records the real expiry month and year", "CSR jane exists with signer kubernetes.io/kube-apiserver-client", "CSR jane approved and certificate issued", "jane can list pods in default (view) but not delete them"]}, "34": {"pass": false, "earned": 0, "total": 4, "failed": ["path.txt has the correct field path", "Gadget/sample created with the field = 4"]}, "41": {"pass": false, "earned": 0, "total": 4, "failed": ["apiserver and kubelet versions correct", "etcd and runtime versions correct"]}}}
{"at": "2026-09-08T19:59", "mode": "exam", "hard": false, "ids": [2, 3, 4, 8, 12, 13, 15, 16, 17, 18, 19, 20, 25, 28, 29, 30, 33, 37, 40, 42], "score_pct": 14.3, "earned": 15, "total": 105, "time_used": 2902, "pauses": 4, "paused_seconds": 113639, "results": {"2": {"pass": true, "earned": 7, "total": 7, "failed": []}, "3": {"pass": false, "earned": 0, "total": 5, "failed": ["overlay kustomization.yaml exists", "resources deployed into namespace store-prod", "store-api has 3 replicas", "Deployment and Service carry label env=prod"]}, "4": {"pass": true, "earned": 4, "total": 4, "failed": []}, "8": {"pass": false, "earned": 0, "total": 4, "failed": ["pod log-shipper Running with containers app and shipper", "volume logs is an emptyDir mounted at /var/log in both containers", "shipper's logs show lines written by app"]}, "12": {"pass": false, "earned": 0, "total": 4, "failed": ["Service shop-svc is NodePort, port 80 -> targetPort 80", "nodePort is 30080", "Service has endpoints"]}, "13": {"pass": false, "earned": 0, "total": 5, "failed": ["ingressClassName nginx and host shop.example.com", "/api (Prefix) -> api:8080", "/ (Prefix) -> web:80"]}, "15": {"pass": false, "earned": 0, "total": 6, "failed": ["PV pv-data: 1Gi hostPath /mnt/data, RWO, Retain, class manual", "PVC pvc-data Bound to pv-data", "data-pod Running with claim mounted at /usr/share/data"]}, "16": {"pass": false, "earned": 0, "total": 5, "failed": ["StorageClass fast-local: local-path, WaitForFirstConsumer, Delete", "fast-local is default and standard is not", "fast-claim picked up fast-local and is Bound", "fast-pod Running with claim at /data"]}, "17": {"pass": false, "earned": 0, "total": 8, "failed": ["node is Ready", "kubelet is active", "kubelet is enabled (survives reboot)"]}, "18": {"pass": false, "earned": 0, "total": 7, "failed": ["all payments replicas available", "Service payments has endpoints (selector fixed)", "Service targetPort matches container port 80"]}, "19": {"pass": false, "earned": 1, "total": 6, "failed": ["crasher.log captured and contains the DB_HOST failure", "pod crasher Running with DB_HOST set"]}, "20": {"pass": false, "earned": 0, "total": 8, "failed": ["kube-scheduler static pod manifest repaired", "new pods get scheduled"]}, "25": {"pass": false, "earned": 0, "total": 4, "failed": ["cka-sim-worker carries workload=batch:NoSchedule", "deployment tolerates the taint", "both pods Running on cka-sim-worker"]}, "28": {"pass": false, "earned": 0, "total": 4, "failed": ["pod Running, init container named setup completed", "emptyDir 'content' shared by both containers", "nginx serves the init-written content"]}, "29": {"pass": false, "earned": 1, "total": 4, "failed": ["deployment now references a different ConfigMap", "all pods available and see mode=new"]}, "30": {"pass": false, "earned": 0, "total": 4, "failed": ["container port 80 named app-port", "Service port 8080 -> targetPort app-port (by name)", "readiness probe uses the named port; endpoints ready"]}, "33": {"pass": false, "earned": 1, "total": 5, "failed": ["ops-44 has an aggregationRule with the right label", "aggregation populated rules from the two labelled roles", "lee can list pods and services cluster-wide"]}, "37": {"pass": false, "earned": 1, "total": 6, "failed": ["CoreDNS Corefile forwards to the node resolver again", "in-cluster and external names resolve from a pod"]}, "40": {"pass": false, "earned": 0, "total": 5, "failed": ["join.sh contains a kubeadm join with token and CA hash", "the token in the file exists in the cluster with TTL ~2h"]}, "42": {"pass": false, "earned": 0, "total": 4, "failed": ["applies to app=client-47, Egress only", "DNS rule: kube-system namespace + k8s-app=kube-dns, ports 53 UDP and TCP", "TCP 443 to 192.168.100.0/24 only"]}}}
{"at": "2026-09-10T21:07", "mode": "drill", "hard": true, "ids": [106, 112, 115, 120, 121], "score_pct": 6.5, "earned": 2, "total": 31, "time_used": 30, "pauses": 1, "paused_seconds": 175907, "results": {"106": {"pass": false, "earned": 0, "total": 7, "failed": ["CRD exists, Namespaced, replicas has min/max and is required", "good created with environment prod", "replicas 0 is rejected and the message was saved", "defaulting works: defaulted.spec.environment == dev"]}, "112": {"pass": false, "earned": 0, "total": 7, "failed": ["Secret portal.lab.local-tls is kubernetes.io/tls with CN portal.lab.local", "Ingress web: class nginx, host, TLS secret, ssl-redirect annotation", "fp.txt matches the secret's certificate fingerprint"]}, "115": {"pass": false, "earned": 1, "total": 6, "failed": ["PVC uses a selector and is Bound to lv-nvme", "consumer Running on the nvme node with /data mounted"]}, "120": {"pass": false, "earned": 0, "total": 5, "failed": ["pod-cidr and service-cidr", "dns-ip and proxy-mode", "cka-sim-worker3 pod CIDR"]}, "121": {"pass": false, "earned": 1, "total": 6, "failed": ["Deployment ledger-14 in ac-omega (the context's namespace), 2 available, owner=ac", "Service ledger-14 port 9000 in the same namespace", "ns.txt has the namespace"]}}}
{"at": "2026-09-12T22:17", "mode": "drill", "hard": false, "ids": [1, 6, 21, 34, 41], "score_pct": 87.5, "earned": 21, "total": 24, "time_used": 534, "pauses": 1, "paused_seconds": 40270, "results": {"1": {"pass": true, "earned": 6, "total": 6, "failed": []}, "6": {"pass": false, "earned": 3, "total": 6, "failed": ["CSR jane exists with signer kubernetes.io/kube-apiserver-client", "CSR jane approved and certificate issued"]}, "21": {"pass": true, "earned": 4, "total": 4, "failed": []}, "34": {"pass": true, "earned": 4, "total": 4, "failed": []}, "41": {"pass": true, "earned": 4, "total": 4, "failed": []}}}
{"at": "2026-09-12T22:59", "mode": "drill", "hard": false, "ids": [17, 19, 37, 38, 39], "score_pct": 29.4, "earned": 10, "total": 34, "time_used": 1987, "pauses": 0, "paused_seconds": 0, "results": {"17": {"pass": false, "earned": 4, "total": 8, "failed": ["kubelet is active", "kubelet is enabled (survives reboot)"]}, "19": {"pass": false, "earned": 1, "total": 6, "failed": ["crasher.log captured and contains the DB_HOST failure", "pod crasher Running with DB_HOST set"]}, "37": {"pass": false, "earned": 1, "total": 6, "failed": ["CoreDNS Corefile forwards to the node resolver again", "in-cluster and external names resolve from a pod"]}, "38": {"pass": false, "earned": 0, "total": 7, "failed": ["kube-controller-manager manifest repaired and pod Running", "a new Deployment gets a ReplicaSet and running pods"]}, "39": {"pass": false, "earned": 4, "total": 7, "failed": ["kubelet config points at a CA file that exists", "kubelet active and enabled"]}}}
{"at": "2026-09-13T01:06", "mode": "drill", "hard": false, "ids": [17, 19, 37, 38, 39], "score_pct": 29.4, "earned": 10, "total": 34, "time_used": 6649, "pauses": 0, "paused_seconds": 0, "results": {"17": {"pass": false, "earned": 4, "total": 8, "failed": ["kubelet is active", "kubelet is enabled (survives reboot)"]}, "19": {"pass": false, "earned": 1, "total": 6, "failed": ["crasher.log captured and contains the DB_HOST failure", "pod crasher Running with DB_HOST set"]}, "37": {"pass": false, "earned": 1, "total": 6, "failed": ["CoreDNS Corefile forwards to the node resolver again", "in-cluster and external names resolve from a pod"]}, "38": {"pass": false, "earned": 0, "total": 7, "failed": ["kube-controller-manager manifest repaired and pod Running", "a new Deployment gets a ReplicaSet and running pods"]}, "39": {"pass": false, "earned": 4, "total": 7, "failed": ["kubelet config points at a CA file that exists", "kubelet active and enabled"]}}}

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# CKA weak spots
_Generated by exam from 3 attempt(s); regenerated on every `end`._
_Generated by exam from 6 attempt(s); regenerated on every `end`._
## Domain scores (latest full exam, 2026-09-08T19:59, 14.3%)
- **ARCH** 12/221 — Cluster Architecture, Installation & Configuration (25%)
- **ARCH** 12/228 — Cluster Architecture, Installation & Configuration (25%)
- **WORK** 1/151 — Workloads & Scheduling (15%)
- **NET** 0/142 — Services & Networking (20%)
- **STOR** 0/66 — Storage (10%)
- **TSHOOT** 2/128 — Troubleshooting (30%)
- **TSHOOT** 2/138 — Troubleshooting (30%)
## Drill next (`./exam drill weak`)
### Q01 · ARCH · RBAC for a deployment bot (1/1 failed, last 2/6 pts, 2026-09-06T22:07)
- ✗ ServiceAccount rbac-app/deploy-bot exists
- ✗ Role deploy-manager and RoleBinding deploy-bot-binding exist
- ✗ deploy-bot can get/list/watch/create/update/patch/delete deployments
### Q03 · ARCH · Kustomize overlay (1/1 failed, last 0/5 pts, 2026-09-08T19:59)
- ✗ overlay kustomization.yaml exists
- ✗ resources deployed into namespace store-prod
@ -28,11 +23,9 @@ _Generated by exam from 3 attempt(s); regenerated on every `end`._
- ✗ mirror pod static-web-<node> is Running
- ✗ image is nginx:1.27
### Q06 · ARCH · Certificates: expiry check and user CSR (1/1 failed, last 0/6 pts, 2026-09-06T22:07)
- ✗ apiserver-expiry.txt records the real expiry month and year
### Q06 · ARCH · Certificates: expiry check and user CSR (2/2 failed, last 3/6 pts, 2026-09-12T22:17)
- ✗ CSR jane exists with signer kubernetes.io/kube-apiserver-client
- ✗ CSR jane approved and certificate issued
- ✗ jane can list pods in default (view) but not delete them
### Q08 · WORK · Multi-container pod with shared volume (1/1 failed, last 0/4 pts, 2026-09-08T19:59)
- ✗ pod log-shipper Running with containers app and shipper
@ -60,8 +53,7 @@ _Generated by exam from 3 attempt(s); regenerated on every `end`._
- ✗ fast-claim picked up fast-local and is Bound
- ✗ fast-pod Running with claim at /data
### Q17 · TSHOOT · Node NotReady (1/1 failed, last 0/8 pts, 2026-09-08T19:59)
- ✗ node is Ready
### Q17 · TSHOOT · Node NotReady (3/3 failed, last 4/8 pts, 2026-09-13T01:06)
- ✗ kubelet is active
- ✗ kubelet is enabled (survives reboot)
@ -70,7 +62,7 @@ _Generated by exam from 3 attempt(s); regenerated on every `end`._
- ✗ Service payments has endpoints (selector fixed)
- ✗ Service targetPort matches container port 80
### Q19 · TSHOOT · CrashLoopBackOff diagnosis (1/1 failed, last 1/6 pts, 2026-09-08T19:59)
### Q19 · TSHOOT · CrashLoopBackOff diagnosis (3/3 failed, last 1/6 pts, 2026-09-13T01:06)
- ✗ crasher.log captured and contains the DB_HOST failure
- ✗ pod crasher Running with DB_HOST set
@ -102,22 +94,22 @@ _Generated by exam from 3 attempt(s); regenerated on every `end`._
- ✗ aggregation populated rules from the two labelled roles
- ✗ lee can list pods and services cluster-wide
### Q34 · ARCH · Discover a CRD field with kubectl explain (1/1 failed, last 0/4 pts, 2026-09-06T22:07)
- ✗ path.txt has the correct field path
- ✗ Gadget/sample created with the field = 4
### Q37 · TSHOOT · Cluster DNS is broken (1/1 failed, last 1/6 pts, 2026-09-08T19:59)
### Q37 · TSHOOT · Cluster DNS is broken (3/3 failed, last 1/6 pts, 2026-09-13T01:06)
- ✗ CoreDNS Corefile forwards to the node resolver again
- ✗ in-cluster and external names resolve from a pod
### Q38 · TSHOOT · Deployments never create pods (2/2 failed, last 0/7 pts, 2026-09-13T01:06)
- ✗ kube-controller-manager manifest repaired and pod Running
- ✗ a new Deployment gets a ReplicaSet and running pods
### Q39 · TSHOOT · kubelet misconfiguration (2/2 failed, last 4/7 pts, 2026-09-13T01:06)
- ✗ kubelet config points at a CA file that exists
- ✗ kubelet active and enabled
### Q40 · ARCH · kubeadm join token (1/1 failed, last 0/5 pts, 2026-09-08T19:59)
- ✗ join.sh contains a kubeadm join with token and CA hash
- ✗ the token in the file exists in the cluster with TTL ~2h
### Q41 · ARCH · Component versions (1/1 failed, last 0/4 pts, 2026-09-06T22:07)
- ✗ apiserver and kubelet versions correct
- ✗ etcd and runtime versions correct
### Q42 · NET · Egress-only NetworkPolicy (1/1 failed, last 0/4 pts, 2026-09-08T19:59)
- ✗ applies to app=client-47, Egress only
- ✗ DNS rule: kube-system namespace + k8s-app=kube-dns, ports 53 UDP and TCP
@ -150,106 +142,108 @@ _Generated by exam from 3 attempt(s); regenerated on every `end`._
## Attempt matrix
| Q | Domain | Title | D1 | E2 | D3 |
|---|---|---|---|---|---|
| 1 | ARCH | RBAC for a deployment bot | 2/6 | · | · |
| 2 | ARCH | etcd snapshot | · | ✓ | · |
| 3 | ARCH | Kustomize overlay | · | 0/5 | · |
| 4 | ARCH | CustomResourceDefinition | · | ✓ | · |
| 5 | ARCH | Static pod | 0/5 | · | · |
| 6 | ARCH | Certificates: expiry check and user CSR | 0/6 | · | · |
| 7 | WORK | Rolling update & scaling | · | · | · |
| 8 | WORK | Multi-container pod with shared volume | · | 0/4 | · |
| 9 | WORK | Scheduling with node affinity and resources | · | · | · |
| 10 | WORK | ConfigMap and Secret consumption | · | · | · |
| 11 | NET | NetworkPolicy | · | · | · |
| 12 | NET | NodePort Service | · | 0/4 | · |
| 13 | NET | Ingress routing | · | 0/5 | · |
| 14 | NET | Cluster DNS | · | · | · |
| 15 | STOR | PersistentVolume, claim and pod | · | 0/6 | · |
| 16 | STOR | Default StorageClass and dynamic provisioning | · | 0/5 | · |
| 17 | TSHOOT | Node NotReady | · | 0/8 | · |
| 18 | TSHOOT | Broken deployment and service | · | 0/7 | · |
| 19 | TSHOOT | CrashLoopBackOff diagnosis | · | 1/6 | · |
| 20 | TSHOOT | Control plane component failure | · | 0/8 | · |
| 21 | ARCH | Helm release install and upgrade | · | · | · |
| 22 | NET | Gateway API HTTPRoute | · | · | · |
| 23 | WORK | metrics-server repair and HPA | · | · | · |
| 24 | WORK | PriorityClass | · | · | · |
| 25 | WORK | Taints and tolerations | · | 0/4 | · |
| 26 | WORK | DaemonSet on every node | · | · | · |
| 27 | WORK | CronJob with a manual run | · | · | · |
| 28 | WORK | Init container prepares content | · | 0/4 | · |
| 29 | WORK | Immutable ConfigMap rotation | · | 1/4 | · |
| 30 | NET | Named ports | · | 0/4 | · |
| 31 | WORK | Parallel Job | · | · | · |
| 32 | WORK | ResourceQuota and LimitRange | · | · | · |
| 33 | ARCH | Aggregated ClusterRole | · | 1/5 | · |
| 34 | ARCH | Discover a CRD field with kubectl explain | 0/4 | · | · |
| 35 | STOR | Re-bind a Released PersistentVolume | · | · | · |
| 36 | STOR | Data survives the pod | · | · | · |
| 37 | TSHOOT | Cluster DNS is broken | · | 1/6 | · |
| 38 | TSHOOT | Deployments never create pods | · | · | · |
| 39 | TSHOOT | kubelet misconfiguration | · | · | · |
| 40 | ARCH | kubeadm join token | · | 0/5 | · |
| 41 | ARCH | Component versions | 0/4 | · | · |
| 42 | NET | Egress-only NetworkPolicy | · | 0/4 | · |
| 43 | NET | Headless and ExternalName services | · | · | · |
| 101 | ARCH | Exact RBAC with an existing over-grant | · | · | · |
| 102 | ARCH | etcd restore | · | · | · |
| 103 | ARCH | Static pod on a relocated manifest path | · | · | · |
| 104 | ARCH | User onboarding to a working kubeconfig | · | · | · |
| 105 | ARCH | Kustomize with generators and patches | · | · | · |
| 106 | ARCH | CRD with validation and defaults | · | · | 0/7 |
| 107 | WORK | Spread, tolerate, prioritise — under a quota | · | · | · |
| 108 | WORK | Rollback to a specific revision, then pause | · | · | · |
| 109 | WORK | Native sidecar with probes and an exact report | · | · | · |
| 110 | WORK | Cluster audit to exact files | · | · | · |
| 111 | NET | Zero-trust namespace | · | · | · |
| 112 | NET | TLS Ingress with a generated certificate | · | · | 0/7 |
| 113 | NET | Gateway API canary with header match | · | · | · |
| 114 | NET | DNS down: three faults | · | · | · |
| 115 | STOR | Bind the right local volume | · | · | 1/6 |
| 116 | STOR | Migrate data between claims | · | · | · |
| 117 | TSHOOT | Worker node: three things wrong | · | · | · |
| 118 | TSHOOT | Two control-plane components down | · | · | · |
| 119 | TSHOOT | Application down for four reasons | · | · | · |
| 120 | TSHOOT | Cluster facts, exactly | · | · | 0/5 |
| 121 | WORK | The context's namespace | · | · | 1/6 |
| 122 | ARCH | Renew control-plane certificates | · | · | · |
| 201 | ARCH | kubeconfig forensics | · | · | · |
| 202 | ARCH | Helm chart with CRDs, then a custom resource | · | · | · |
| 203 | WORK | Find the controller, then scale it | · | · | · |
| 204 | WORK | Which Pods get evicted first | · | · | · |
| 205 | ARCH | Kustomize: drop a ConfigMap, add an HPA, override in prod | · | · | · |
| 206 | STOR | PV, PVC and a Deployment that mounts it | · | · | · |
| 207 | TSHOOT | Resource usage scripts | · | · | · |
| 208 | ARCH | Drain a node for maintenance | · | · | · |
| 209 | ARCH | Query the API from inside a Pod | · | · | · |
| 210 | ARCH | ServiceAccount limited to two resources | · | · | · |
| 211 | WORK | DaemonSet on every node | · | · | · |
| 212 | WORK | One Pod per node, on purpose | · | · | · |
| 213 | NET | Convert an Ingress to Gateway API, then split on a header | · | · | · |
| 214 | ARCH | Certificate expiry, two ways | · | · | · |
| 215 | NET | Egress policy with paired destinations | · | · | · |
| 216 | NET | CoreDNS: back up, extend, verify | · | · | · |
| 217 | TSHOOT | Inspect a container with crictl | · | · | · |
| 301 | ARCH | etcd configuration facts | · | · | · |
| 302 | NET | Service rules on the node | · | · | · |
| 303 | NET | A second Service CIDR | · | · | · |
| 304 | ARCH | Bound tokens versus legacy tokens | · | · | · |
| 305 | WORK | Schedule without the scheduler | · | · | · |
| 306 | STOR | Grow a volume in place | · | · | · |
| 307 | TSHOOT | Node accepts nothing new | · | · | · |
| 308 | ARCH | API resource reference card | · | · | · |
| 309 | WORK | A PodDisruptionBudget that blocks maintenance | · | · | · |
| 310 | NET | Route to something outside the cluster | · | · | · |
| 311 | ARCH | Image inventory across the cluster | · | · | · |
| 312 | WORK | A Job that fails, then one that doesn't | · | · | · |
| 313 | NET | Two hosts, TLS, and a default backend | · | · | · |
| 314 | TSHOOT | A static pod that never starts | · | · | · |
| 315 | STOR | Keep the data when the claim goes | · | · | · |
| 316 | ARCH | Plan a control-plane upgrade | · | · | · |
| 317 | TSHOOT | Certificates stop being issued | · | · | · |
| Q | Domain | Title | D1 | E2 | D3 | D4 | D5 | D6 |
|---|---|---|---|---|---|---|---|---|
| 1 | ARCH | RBAC for a deployment bot | 2/6 | · | · | ✓ | · | · |
| 2 | ARCH | etcd snapshot | · | ✓ | · | · | · | · |
| 3 | ARCH | Kustomize overlay | · | 0/5 | · | · | · | · |
| 4 | ARCH | CustomResourceDefinition | · | ✓ | · | · | · | · |
| 5 | ARCH | Static pod | 0/5 | · | · | · | · | · |
| 6 | ARCH | Certificates: expiry check and user CSR | 0/6 | · | · | 3/6 | · | · |
| 7 | WORK | Rolling update & scaling | · | · | · | · | · | · |
| 8 | WORK | Multi-container pod with shared volume | · | 0/4 | · | · | · | · |
| 9 | WORK | Scheduling with node affinity and resources | · | · | · | · | · | · |
| 10 | WORK | ConfigMap and Secret consumption | · | · | · | · | · | · |
| 11 | NET | NetworkPolicy | · | · | · | · | · | · |
| 12 | NET | NodePort Service | · | 0/4 | · | · | · | · |
| 13 | NET | Ingress routing | · | 0/5 | · | · | · | · |
| 14 | NET | Cluster DNS | · | · | · | · | · | · |
| 15 | STOR | PersistentVolume, claim and pod | · | 0/6 | · | · | · | · |
| 16 | STOR | Default StorageClass and dynamic provisioning | · | 0/5 | · | · | · | · |
| 17 | TSHOOT | Node NotReady | · | 0/8 | · | · | 4/8 | 4/8 |
| 18 | TSHOOT | Broken deployment and service | · | 0/7 | · | · | · | · |
| 19 | TSHOOT | CrashLoopBackOff diagnosis | · | 1/6 | · | · | 1/6 | 1/6 |
| 20 | TSHOOT | Control plane component failure | · | 0/8 | · | · | · | · |
| 21 | ARCH | Helm release install and upgrade | · | · | · | ✓ | · | · |
| 22 | NET | Gateway API HTTPRoute | · | · | · | · | · | · |
| 23 | WORK | metrics-server repair and HPA | · | · | · | · | · | · |
| 24 | WORK | PriorityClass | · | · | · | · | · | · |
| 25 | WORK | Taints and tolerations | · | 0/4 | · | · | · | · |
| 26 | WORK | DaemonSet on every node | · | · | · | · | · | · |
| 27 | WORK | CronJob with a manual run | · | · | · | · | · | · |
| 28 | WORK | Init container prepares content | · | 0/4 | · | · | · | · |
| 29 | WORK | Immutable ConfigMap rotation | · | 1/4 | · | · | · | · |
| 30 | NET | Named ports | · | 0/4 | · | · | · | · |
| 31 | WORK | Parallel Job | · | · | · | · | · | · |
| 32 | WORK | ResourceQuota and LimitRange | · | · | · | · | · | · |
| 33 | ARCH | Aggregated ClusterRole | · | 1/5 | · | · | · | · |
| 34 | ARCH | Discover a CRD field with kubectl explain | 0/4 | · | · | ✓ | · | · |
| 35 | STOR | Re-bind a Released PersistentVolume | · | · | · | · | · | · |
| 36 | STOR | Data survives the pod | · | · | · | · | · | · |
| 37 | TSHOOT | Cluster DNS is broken | · | 1/6 | · | · | 1/6 | 1/6 |
| 38 | TSHOOT | Deployments never create pods | · | · | · | · | 0/7 | 0/7 |
| 39 | TSHOOT | kubelet misconfiguration | · | · | · | · | 4/7 | 4/7 |
| 40 | ARCH | kubeadm join token | · | 0/5 | · | · | · | · |
| 41 | ARCH | Component versions | 0/4 | · | · | ✓ | · | · |
| 42 | NET | Egress-only NetworkPolicy | · | 0/4 | · | · | · | · |
| 43 | NET | Headless and ExternalName services | · | · | · | · | · | · |
| 101 | ARCH | Exact RBAC with an existing over-grant | · | · | · | · | · | · |
| 102 | ARCH | etcd restore | · | · | · | · | · | · |
| 103 | ARCH | Static pod on a relocated manifest path | · | · | · | · | · | · |
| 104 | ARCH | User onboarding to a working kubeconfig | · | · | · | · | · | · |
| 105 | ARCH | Kustomize with generators and patches | · | · | · | · | · | · |
| 106 | ARCH | CRD with validation and defaults | · | · | 0/7 | · | · | · |
| 107 | WORK | Spread, tolerate, prioritise — under a quota | · | · | · | · | · | · |
| 108 | WORK | Rollback to a specific revision, then pause | · | · | · | · | · | · |
| 109 | WORK | Native sidecar with probes and an exact report | · | · | · | · | · | · |
| 110 | WORK | Cluster audit to exact files | · | · | · | · | · | · |
| 111 | NET | Zero-trust namespace | · | · | · | · | · | · |
| 112 | NET | TLS Ingress with a generated certificate | · | · | 0/7 | · | · | · |
| 113 | NET | Gateway API canary with header match | · | · | · | · | · | · |
| 114 | NET | DNS down: three faults | · | · | · | · | · | · |
| 115 | STOR | Bind the right local volume | · | · | 1/6 | · | · | · |
| 116 | STOR | Migrate data between claims | · | · | · | · | · | · |
| 117 | TSHOOT | Worker node: three things wrong | · | · | · | · | · | · |
| 118 | TSHOOT | Two control-plane components down | · | · | · | · | · | · |
| 119 | TSHOOT | Application down for four reasons | · | · | · | · | · | · |
| 120 | TSHOOT | Cluster facts, exactly | · | · | 0/5 | · | · | · |
| 121 | WORK | The context's namespace | · | · | 1/6 | · | · | · |
| 122 | ARCH | Renew control-plane certificates | · | · | · | · | · | · |
| 123 | TSHOOT | Nothing works: kube-apiserver itself is down | · | · | · | · | · | · |
| 124 | ARCH | Prepare a node join without shell access to the control plane | · | · | · | · | · | · |
| 201 | ARCH | kubeconfig forensics | · | · | · | · | · | · |
| 202 | ARCH | Helm chart with CRDs, then a custom resource | · | · | · | · | · | · |
| 203 | WORK | Find the controller, then scale it | · | · | · | · | · | · |
| 204 | WORK | Which Pods get evicted first | · | · | · | · | · | · |
| 205 | ARCH | Kustomize: drop a ConfigMap, add an HPA, override in prod | · | · | · | · | · | · |
| 206 | STOR | PV, PVC and a Deployment that mounts it | · | · | · | · | · | · |
| 207 | TSHOOT | Resource usage scripts | · | · | · | · | · | · |
| 208 | ARCH | Drain a node for maintenance | · | · | · | · | · | · |
| 209 | ARCH | Query the API from inside a Pod | · | · | · | · | · | · |
| 210 | ARCH | ServiceAccount limited to two resources | · | · | · | · | · | · |
| 211 | WORK | DaemonSet on every node | · | · | · | · | · | · |
| 212 | WORK | One Pod per node, on purpose | · | · | · | · | · | · |
| 213 | NET | Convert an Ingress to Gateway API, then split on a header | · | · | · | · | · | · |
| 214 | ARCH | Certificate expiry, two ways | · | · | · | · | · | · |
| 215 | NET | Egress policy with paired destinations | · | · | · | · | · | · |
| 216 | NET | CoreDNS: back up, extend, verify | · | · | · | · | · | · |
| 217 | TSHOOT | Inspect a container with crictl | · | · | · | · | · | · |
| 301 | ARCH | etcd configuration facts | · | · | · | · | · | · |
| 302 | NET | Service rules on the node | · | · | · | · | · | · |
| 303 | NET | A second Service CIDR | · | · | · | · | · | · |
| 304 | ARCH | Bound tokens versus legacy tokens | · | · | · | · | · | · |
| 305 | WORK | Schedule without the scheduler | · | · | · | · | · | · |
| 306 | STOR | Grow a volume in place | · | · | · | · | · | · |
| 307 | TSHOOT | Node accepts nothing new | · | · | · | · | · | · |
| 308 | ARCH | API resource reference card | · | · | · | · | · | · |
| 309 | WORK | A PodDisruptionBudget that blocks maintenance | · | · | · | · | · | · |
| 310 | NET | Route to something outside the cluster | · | · | · | · | · | · |
| 311 | ARCH | Image inventory across the cluster | · | · | · | · | · | · |
| 312 | WORK | A Job that fails, then one that doesn't | · | · | · | · | · | · |
| 313 | NET | Two hosts, TLS, and a default backend | · | · | · | · | · | · |
| 314 | TSHOOT | A static pod that never starts | · | · | · | · | · | · |
| 315 | STOR | Keep the data when the claim goes | · | · | · | · | · | · |
| 316 | ARCH | Plan a control-plane upgrade | · | · | · | · | · | · |
| 317 | TSHOOT | Certificates stop being issued | · | · | · | · | · | · |
_E = full exam, D = drill, · = not in that session, n/m = partial credit._