docs: updated history and weak-spots
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{"at": "2026-09-14T16:49", "mode": "drill", "hard": false, "ids": [3, 5, 6, 8, 12, 13, 15, 16, 17, 18, 19, 20, 25, 28, 29, 30, 33, 37, 38, 39, 40, 42, 106, 112, 115, 120, 121], "score_pct": 42.0, "earned": 63, "total": 150, "time_used": 510, "pauses": 2, "paused_seconds": 87534, "results": {"17": {"pass": true, "earned": 8, "total": 8, "failed": []}, "20": {"pass": true, "earned": 8, "total": 8, "failed": []}, "3": {"pass": true, "earned": 5, "total": 5, "failed": []}, "5": {"pass": true, "earned": 5, "total": 5, "failed": []}, "8": {"pass": true, "earned": 4, "total": 4, "failed": []}, "12": {"pass": true, "earned": 4, "total": 4, "failed": []}, "38": {"pass": true, "earned": 7, "total": 7, "failed": []}, "18": {"pass": true, "earned": 7, "total": 7, "failed": []}, "19": {"pass": false, "earned": 4, "total": 6, "failed": ["crasher.log captured and contains the DB_HOST failure"]}, "6": {"pass": true, "earned": 6, "total": 6, "failed": []}, "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"]}, "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 svc-http", "Service port 8080 -> targetPort svc-http (by name)", "readiness probe uses the named port; endpoints ready"]}, "33": {"pass": false, "earned": 1, "total": 5, "failed": ["ops-19 has an aggregationRule with the right label", "aggregation populated rules from the two labelled roles", "sam 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"]}, "39": {"pass": false, "earned": 0, "total": 7, "failed": ["kubelet config points at a CA file that exists", "node Ready", "kubelet active and enabled"]}, "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-64, Egress only", "DNS rule: kube-system namespace + k8s-app=kube-dns, ports 53 UDP and TCP", "TCP 443 to 172.16.0.0/16 only"]}, "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 admin.lab.local-tls is kubernetes.io/tls with CN admin.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-73 in ac-bravo (the context's namespace), 2 available, owner=ac", "Service ledger-73 port 9000 in the same namespace", "ns.txt has the namespace"]}}}
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{"at": "2026-09-15T20:55", "mode": "drill", "hard": false, "ids": [13, 15, 16, 19, 25, 28, 29, 30, 33, 37, 39, 40, 42, 106, 112, 115, 120, 121], "score_pct": 41.7, "earned": 40, "total": 96, "time_used": 608, "pauses": 1, "paused_seconds": 100482, "results": {"13": {"pass": true, "earned": 5, "total": 5, "failed": []}, "19": {"pass": true, "earned": 6, "total": 6, "failed": []}, "33": {"pass": true, "earned": 5, "total": 5, "failed": []}, "30": {"pass": true, "earned": 4, "total": 4, "failed": []}, "37": {"pass": true, "earned": 6, "total": 6, "failed": []}, "39": {"pass": true, "earned": 7, "total": 7, "failed": []}, "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 ~6h"]}, "42": {"pass": true, "earned": 4, "total": 4, "failed": []}, "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"]}, "25": {"pass": false, "earned": 0, "total": 4, "failed": ["cka-sim-worker carries team=finance: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"]}, "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-21 in ac-echo (the context's namespace), 2 available, owner=ac", "Service ledger-21 port 9000 in the same namespace", "ns.txt has the namespace"]}}}
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{"at": "2026-09-16T19:40", "mode": "drill", "hard": false, "ids": [15, 16, 25, 28, 29, 40], "score_pct": 50.0, "earned": 14, "total": 28, "time_used": 1258, "pauses": 3, "paused_seconds": 80587, "results": {"15": {"pass": true, "earned": 6, "total": 6, "failed": []}, "25": {"pass": true, "earned": 4, "total": 4, "failed": []}, "29": {"pass": true, "earned": 4, "total": 4, "failed": []}, "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"]}, "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"]}, "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 ~24h"]}}}
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{"at": "2026-09-19T12:27", "mode": "drill", "hard": false, "ids": [106, 217, 34, 202, 102, 301, 39, 13, 32, 204, 25, 2, 8, 112, 4, 109, 313, 9], "score_pct": 39.7, "earned": 48, "total": 121, "time_used": 4197, "pauses": 12, "paused_seconds": 90755, "results": {"8": {"pass": true, "earned": 4, "total": 4, "failed": []}, "34": {"pass": true, "earned": 4, "total": 4, "failed": []}, "39": {"pass": true, "earned": 7, "total": 7, "failed": []}, "13": {"pass": true, "earned": 5, "total": 5, "failed": []}, "25": {"pass": true, "earned": 4, "total": 4, "failed": []}, "301": {"pass": true, "earned": 9, "total": 9, "failed": []}, "4": {"pass": true, "earned": 4, "total": 4, "failed": []}, "9": {"pass": true, "earned": 4, "total": 4, "failed": []}, "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"]}, "217": {"pass": false, "earned": 0, "total": 10, "failed": ["Pod tiger-probe Running with both labels", "container.txt holds a real container ID for that Pod", "container.txt records the runtimeType", "container.log holds the httpd startup output"]}, "202": {"pass": false, "earned": 3, "total": 8, "failed": ["watchAllNamespaces=true reached the pod env", "Ledger main-ledger has currency USD and retentionDays 30"]}, "102": {"pass": false, "earned": 2, "total": 10, "failed": ["ConfigMap restore-proof-67 exists again with its original data", "etcd uses a restored data directory (manifest changed)"]}, "32": {"pass": false, "earned": 0, "total": 4, "failed": ["ResourceQuota limits pods/6, requests.cpu 1, limits.memory 2Gi", "LimitRange defaults set", "worker pods Running with defaulted requests"]}, "204": {"pass": false, "earned": 0, "total": 8, "failed": ["evicted-first.txt lists exactly the BestEffort pods", "api-qos.txt says Burstable", "guaranteed.txt names orion-ledger"]}, "2": {"pass": false, "earned": 0, "total": 7, "failed": ["/opt/cka/etcd-snapshot.db exists on the control-plane node", "snapshot is a real etcd backup (> 100 KB)"]}, "112": {"pass": false, "earned": 0, "total": 7, "failed": ["Secret secure.lab.local-tls is kubernetes.io/tls with CN secure.lab.local", "Ingress web: class nginx, host, TLS secret, ssl-redirect annotation", "fp.txt matches the secret's certificate fingerprint"]}, "109": {"pass": false, "earned": 2, "total": 8, "failed": ["native sidecar: initContainer agent with restartPolicy Always", "probes on app as specified", "Running, shared log written by agent, grace period 5"]}, "313": {"pass": false, "earned": 0, "total": 11, "failed": ["Secret classic-tls is a TLS secret with CN classic.r700.io", "both host rules route to the right Services on /", "TLS covers both hosts with classic-tls", "defaultBackend points at web-classic:80, class is nginx"]}}}
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@ -1,22 +1,26 @@
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# CKA weak spots
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_Generated by exam from 9 attempt(s); regenerated on every `end`._
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_Generated by exam from 10 attempt(s); regenerated on every `end`._
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## Domain scores (latest full exam, 2026-09-08T19:59, 14.3%)
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- **ARCH** 12/228 — Cluster Architecture, Installation & Configuration (25%)
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- **WORK** 1/151 — Workloads & Scheduling (15%)
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- **NET** 0/142 — Services & Networking (20%)
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- **STOR** 0/66 — Storage (10%)
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- **TSHOOT** 2/138 — Troubleshooting (30%)
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- **ARCH** 12/266 — Cluster Architecture, Installation & Configuration (25%)
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- **WORK** 1/187 — Workloads & Scheduling (15%)
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- **NET** 0/179 — Services & Networking (20%)
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- **STOR** 0/85 — Storage (10%)
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- **TSHOOT** 2/171 — Troubleshooting (30%)
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## Drill next (`./exam drill weak`)
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### Q02 · ARCH · etcd snapshot (1/2 failed, last 0/7 pts, 2026-09-19T12:27)
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- ✗ /opt/cka/etcd-snapshot.db exists on the control-plane node
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- ✗ snapshot is a real etcd backup (> 100 KB)
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### Q06 · ARCH · Certificates: expiry check and user CSR (2/3 failed, last 6/6 pts, 2026-09-12T22:17)
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- ✗ CSR jane exists with signer kubernetes.io/kube-apiserver-client
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- ✗ CSR jane approved and certificate issued
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### Q13 · NET · Ingress routing (2/3 failed, last 5/5 pts, 2026-09-14T16:49)
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### Q13 · NET · Ingress routing (2/4 failed, last 5/5 pts, 2026-09-14T16:49)
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- ✗ ingressClassName nginx and host shop.example.com
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- ✗ /api (Prefix) -> api:8080
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- ✗ / (Prefix) -> web:80
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@ -39,7 +43,7 @@ _Generated by exam from 9 attempt(s); regenerated on every `end`._
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### Q19 · TSHOOT · CrashLoopBackOff diagnosis (4/5 failed, last 6/6 pts, 2026-09-14T16:49)
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- ✗ crasher.log captured and contains the DB_HOST failure
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### Q25 · WORK · Taints and tolerations (3/4 failed, last 4/4 pts, 2026-09-15T20:55)
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### Q25 · WORK · Taints and tolerations (3/5 failed, last 4/4 pts, 2026-09-15T20:55)
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- ✗ cka-sim-worker carries team=finance:NoSchedule
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- ✗ deployment tolerates the taint
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- ✗ both pods Running on cka-sim-worker
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@ -58,6 +62,11 @@ _Generated by exam from 9 attempt(s); regenerated on every `end`._
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- ✗ Service port 8080 -> targetPort svc-http (by name)
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- ✗ readiness probe uses the named port; endpoints ready
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### Q32 · WORK · ResourceQuota and LimitRange (1/1 failed, last 0/4 pts, 2026-09-19T12:27)
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- ✗ ResourceQuota limits pods/6, requests.cpu 1, limits.memory 2Gi
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- ✗ LimitRange defaults set
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- ✗ worker pods Running with defaulted requests
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### Q33 · ARCH · Aggregated ClusterRole (2/3 failed, last 5/5 pts, 2026-09-14T16:49)
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- ✗ ops-19 has an aggregationRule with the right label
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- ✗ aggregation populated rules from the two labelled roles
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@ -71,7 +80,7 @@ _Generated by exam from 9 attempt(s); regenerated on every `end`._
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- ✗ kube-controller-manager manifest repaired and pod Running
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- ✗ a new Deployment gets a ReplicaSet and running pods
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### Q39 · TSHOOT · kubelet misconfiguration (3/4 failed, last 7/7 pts, 2026-09-14T16:49)
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### Q39 · TSHOOT · kubelet misconfiguration (3/5 failed, last 7/7 pts, 2026-09-14T16:49)
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- ✗ kubelet config points at a CA file that exists
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- ✗ node Ready
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- ✗ kubelet active and enabled
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@ -85,14 +94,23 @@ _Generated by exam from 9 attempt(s); regenerated on every `end`._
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- ✗ DNS rule: kube-system namespace + k8s-app=kube-dns, ports 53 UDP and TCP
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- ✗ TCP 443 to 172.16.0.0/16 only
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### Q106 · ARCH · CRD with validation and defaults (3/3 failed, last 0/7 pts, 2026-09-15T20:55)
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### Q102 · ARCH · etcd restore (1/1 failed, last 2/10 pts, 2026-09-19T12:27)
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- ✗ ConfigMap restore-proof-67 exists again with its original data
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- ✗ etcd uses a restored data directory (manifest changed)
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### Q106 · ARCH · CRD with validation and defaults (4/4 failed, last 0/7 pts, 2026-09-19T12:27)
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- ✗ CRD exists, Namespaced, replicas has min/max and is required
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- ✗ good created with environment prod
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- ✗ replicas 0 is rejected and the message was saved
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- ✗ defaulting works: defaulted.spec.environment == dev
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### Q112 · NET · TLS Ingress with a generated certificate (3/3 failed, last 0/7 pts, 2026-09-15T20:55)
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- ✗ Secret portal.lab.local-tls is kubernetes.io/tls with CN portal.lab.local
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### Q109 · WORK · Native sidecar with probes and an exact report (1/1 failed, last 2/8 pts, 2026-09-19T12:27)
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- ✗ native sidecar: initContainer agent with restartPolicy Always
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- ✗ probes on app as specified
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- ✗ Running, shared log written by agent, grace period 5
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### Q112 · NET · TLS Ingress with a generated certificate (4/4 failed, last 0/7 pts, 2026-09-19T12:27)
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- ✗ Secret secure.lab.local-tls is kubernetes.io/tls with CN secure.lab.local
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- ✗ Ingress web: class nginx, host, TLS secret, ssl-redirect annotation
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- ✗ fp.txt matches the secret's certificate fingerprint
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@ -110,110 +128,149 @@ _Generated by exam from 9 attempt(s); regenerated on every `end`._
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- ✗ Service ledger-21 port 9000 in the same namespace
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- ✗ ns.txt has the namespace
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### Q202 · ARCH · Helm chart with CRDs, then a custom resource (1/1 failed, last 3/8 pts, 2026-09-19T12:27)
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- ✗ watchAllNamespaces=true reached the pod env
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- ✗ Ledger main-ledger has currency USD and retentionDays 30
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### Q204 · WORK · Which Pods get evicted first (1/1 failed, last 0/8 pts, 2026-09-19T12:27)
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- ✗ evicted-first.txt lists exactly the BestEffort pods
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- ✗ api-qos.txt says Burstable
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- ✗ guaranteed.txt names orion-ledger
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### Q217 · TSHOOT · Inspect a container with crictl (1/1 failed, last 0/10 pts, 2026-09-19T12:27)
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- ✗ Pod tiger-probe Running with both labels
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- ✗ container.txt holds a real container ID for that Pod
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- ✗ container.txt records the runtimeType
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- ✗ container.log holds the httpd startup output
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### Q313 · NET · Two hosts, TLS, and a default backend (1/1 failed, last 0/11 pts, 2026-09-19T12:27)
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- ✗ Secret classic-tls is a TLS secret with CN classic.r700.io
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- ✗ both host rules route to the right Services on /
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- ✗ TLS covers both hosts with classic-tls
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- ✗ defaultBackend points at web-classic:80, class is nginx
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## Attempt matrix
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| Q | Domain | Title | D1 | E2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 |
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|---|---|---|---|---|---|---|---|---|---|---|---|
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| 1 | ARCH | RBAC for a deployment bot | 2/6 | · | · | ✓ | · | · | · | · | · |
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| 2 | ARCH | etcd snapshot | · | ✓ | · | · | · | · | · | · | · |
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| 3 | ARCH | Kustomize overlay | · | 0/5 | · | · | · | · | ✓ | · | · |
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| 4 | ARCH | CustomResourceDefinition | · | ✓ | · | · | · | · | · | · | · |
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| 5 | ARCH | Static pod | 0/5 | · | · | · | · | · | ✓ | · | · |
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| 6 | ARCH | Certificates: expiry check and user CSR | 0/6 | · | · | 3/6 | · | · | ✓ | · | · |
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| 7 | WORK | Rolling update & scaling | · | · | · | · | · | · | · | · | · |
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| 8 | WORK | Multi-container pod with shared volume | · | 0/4 | · | · | · | · | ✓ | · | · |
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| 9 | WORK | Scheduling with node affinity and resources | · | · | · | · | · | · | · | · | · |
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| 10 | WORK | ConfigMap and Secret consumption | · | · | · | · | · | · | · | · | · |
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| 11 | NET | NetworkPolicy | · | · | · | · | · | · | · | · | · |
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| 12 | NET | NodePort Service | · | 0/4 | · | · | · | · | ✓ | · | · |
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| 13 | NET | Ingress routing | · | 0/5 | · | · | · | · | 0/5 | ✓ | · |
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| 14 | NET | Cluster DNS | · | · | · | · | · | · | · | · | · |
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| 15 | STOR | PersistentVolume, claim and pod | · | 0/6 | · | · | · | · | 0/6 | 0/6 | ✓ |
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| 16 | STOR | Default StorageClass and dynamic provisioning | · | 0/5 | · | · | · | · | 0/5 | 0/5 | 0/5 |
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| 17 | TSHOOT | Node NotReady | · | 0/8 | · | · | 4/8 | 4/8 | ✓ | · | · |
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| 18 | TSHOOT | Broken deployment and service | · | 0/7 | · | · | · | · | ✓ | · | · |
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| 19 | TSHOOT | CrashLoopBackOff diagnosis | · | 1/6 | · | · | 1/6 | 1/6 | 4/6 | ✓ | · |
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| 20 | TSHOOT | Control plane component failure | · | 0/8 | · | · | · | · | ✓ | · | · |
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| 21 | ARCH | Helm release install and upgrade | · | · | · | ✓ | · | · | · | · | · |
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| 22 | NET | Gateway API HTTPRoute | · | · | · | · | · | · | · | · | · |
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| 23 | WORK | metrics-server repair and HPA | · | · | · | · | · | · | · | · | · |
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| 24 | WORK | PriorityClass | · | · | · | · | · | · | · | · | · |
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| 25 | WORK | Taints and tolerations | · | 0/4 | · | · | · | · | 0/4 | 0/4 | ✓ |
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| 26 | WORK | DaemonSet on every node | · | · | · | · | · | · | · | · | · |
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| 27 | WORK | CronJob with a manual run | · | · | · | · | · | · | · | · | · |
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| 28 | WORK | Init container prepares content | · | 0/4 | · | · | · | · | 0/4 | 0/4 | 0/4 |
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| 29 | WORK | Immutable ConfigMap rotation | · | 1/4 | · | · | · | · | 1/4 | 1/4 | ✓ |
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| 30 | NET | Named ports | · | 0/4 | · | · | · | · | 0/4 | ✓ | · |
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| 31 | WORK | Parallel Job | · | · | · | · | · | · | · | · | · |
|
||||
| 32 | WORK | ResourceQuota and LimitRange | · | · | · | · | · | · | · | · | · |
|
||||
| 33 | ARCH | Aggregated ClusterRole | · | 1/5 | · | · | · | · | 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 | 1/6 | ✓ | · |
|
||||
| 38 | TSHOOT | Deployments never create pods | · | · | · | · | 0/7 | 0/7 | ✓ | · | · |
|
||||
| 39 | TSHOOT | kubelet misconfiguration | · | · | · | · | 4/7 | 4/7 | 0/7 | ✓ | · |
|
||||
| 40 | ARCH | kubeadm join token | · | 0/5 | · | · | · | · | 0/5 | 0/5 | 0/5 |
|
||||
| 41 | ARCH | Component versions | 0/4 | · | · | ✓ | · | · | · | · | · |
|
||||
| 42 | NET | Egress-only NetworkPolicy | · | 0/4 | · | · | · | · | 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 | · | · | · | 0/7 | 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 | · | · | · | 0/7 | 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 | · | · | · | 1/6 | 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 | · | · | · | 0/5 | 0/5 | · |
|
||||
| 121 | WORK | The context's namespace | · | · | 1/6 | · | · | · | 1/6 | 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 | · | · | · | · | · | · | · | · | · |
|
||||
| Q | Domain | Title | D1 | E2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 |
|
||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||
| 1 | ARCH | RBAC for a deployment bot | 2/6 | · | · | ✓ | · | · | · | · | · | · |
|
||||
| 2 | ARCH | etcd snapshot | · | ✓ | · | · | · | · | · | · | · | 0/7 |
|
||||
| 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 | · | · | · | · | 0/5 | ✓ | · | ✓ |
|
||||
| 14 | NET | Cluster DNS | · | · | · | · | · | · | · | · | · | · |
|
||||
| 15 | STOR | PersistentVolume, claim and pod | · | 0/6 | · | · | · | · | 0/6 | 0/6 | ✓ | · |
|
||||
| 16 | STOR | Default StorageClass and dynamic provisioning | · | 0/5 | · | · | · | · | 0/5 | 0/5 | 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 | 4/6 | ✓ | · | · |
|
||||
| 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 | · | · | · | · | 0/4 | 0/4 | ✓ | ✓ |
|
||||
| 26 | WORK | DaemonSet on every node | · | · | · | · | · | · | · | · | · | · |
|
||||
| 27 | WORK | CronJob with a manual run | · | · | · | · | · | · | · | · | · | · |
|
||||
| 28 | WORK | Init container prepares content | · | 0/4 | · | · | · | · | 0/4 | 0/4 | 0/4 | · |
|
||||
| 29 | WORK | Immutable ConfigMap rotation | · | 1/4 | · | · | · | · | 1/4 | 1/4 | ✓ | · |
|
||||
| 30 | NET | Named ports | · | 0/4 | · | · | · | · | 0/4 | ✓ | · | · |
|
||||
| 31 | WORK | Parallel Job | · | · | · | · | · | · | · | · | · | · |
|
||||
| 32 | WORK | ResourceQuota and LimitRange | · | · | · | · | · | · | · | · | · | 0/4 |
|
||||
| 33 | ARCH | Aggregated ClusterRole | · | 1/5 | · | · | · | · | 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 | 1/6 | ✓ | · | · |
|
||||
| 38 | TSHOOT | Deployments never create pods | · | · | · | · | 0/7 | 0/7 | ✓ | · | · | · |
|
||||
| 39 | TSHOOT | kubelet misconfiguration | · | · | · | · | 4/7 | 4/7 | 0/7 | ✓ | · | ✓ |
|
||||
| 40 | ARCH | kubeadm join token | · | 0/5 | · | · | · | · | 0/5 | 0/5 | 0/5 | · |
|
||||
| 41 | ARCH | Component versions | 0/4 | · | · | ✓ | · | · | · | · | · | · |
|
||||
| 42 | NET | Egress-only NetworkPolicy | · | 0/4 | · | · | · | · | 0/4 | ✓ | · | · |
|
||||
| 43 | NET | Headless and ExternalName services | · | · | · | · | · | · | · | · | · | · |
|
||||
| 101 | ARCH | Exact RBAC with an existing over-grant | · | · | · | · | · | · | · | · | · | · |
|
||||
| 102 | ARCH | etcd restore | · | · | · | · | · | · | · | · | · | 2/10 |
|
||||
| 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 | · | · | · | 0/7 | 0/7 | · | 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 | · | · | · | · | · | · | · | · | · | 2/8 |
|
||||
| 110 | WORK | Cluster audit to exact files | · | · | · | · | · | · | · | · | · | · |
|
||||
| 111 | NET | Zero-trust namespace | · | · | · | · | · | · | · | · | · | · |
|
||||
| 112 | NET | TLS Ingress with a generated certificate | · | · | 0/7 | · | · | · | 0/7 | 0/7 | · | 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 | · | · | · | 1/6 | 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 | · | · | · | 0/5 | 0/5 | · | · |
|
||||
| 121 | WORK | The context's namespace | · | · | 1/6 | · | · | · | 1/6 | 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 | · | · | · | · | · | · | · | · | · | 3/8 |
|
||||
| 203 | WORK | Find the controller, then scale it | · | · | · | · | · | · | · | · | · | · |
|
||||
| 204 | WORK | Which Pods get evicted first | · | · | · | · | · | · | · | · | · | 0/8 |
|
||||
| 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 | · | · | · | · | · | · | · | · | · | 0/10 |
|
||||
| 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 | · | · | · | · | · | · | · | · | · | 0/11 |
|
||||
| 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 | · | · | · | · | · | · | · | · | · | · |
|
||||
| 401 | STOR | Provision geo-fence persistent storage | · | · | · | · | · | · | · | · | · | · |
|
||||
| 402 | ARCH | Render a chart, then install it | · | · | · | · | · | · | · | · | · | · |
|
||||
| 403 | TSHOOT | Fix the driver onboarding app | · | · | · | · | · | · | · | · | · | · |
|
||||
| 404 | NET | Expose and verify the dispatch API | · | · | · | · | · | · | · | · | · | · |
|
||||
| 405 | STOR | Migrate ride history to a Retain volume | · | · | · | · | · | · | · | · | · | · |
|
||||
| 406 | TSHOOT | Fix ETA service connectivity | · | · | · | · | · | · | · | · | · | · |
|
||||
| 407 | NET | Fleet dashboard canary with Gateway API | · | · | · | · | · | · | · | · | · | · |
|
||||
| 408 | ARCH | Cluster-wide read access for the auth team | · | · | · | · | · | · | · | · | · | · |
|
||||
| 409 | WORK | Add an init container to the trip logger | · | · | · | · | · | · | · | · | · | · |
|
||||
| 410 | NET | Audit the CNI, then lock a namespace down | · | · | · | · | · | · | · | · | · | · |
|
||||
| 411 | WORK | Priority for the rider support portal | · | · | · | · | · | · | · | · | · | · |
|
||||
| 412 | WORK | Surge pricing configuration | · | · | · | · | · | · | · | · | · | · |
|
||||
| 413 | ARCH | Plan the control-plane upgrade | · | · | · | · | · | · | · | · | · | · |
|
||||
| 414 | TSHOOT | Fix the fare calculation pods | · | · | · | · | · | · | · | · | · | · |
|
||||
| 415 | WORK | Autoscale the route planner on memory | · | · | · | · | · | · | · | · | · | · |
|
||||
| 416 | NET | NetworkPolicy for the safety monitor | · | · | · | · | · | · | · | · | · | · |
|
||||
| 417 | ARCH | Enforce TLS 1.3 on the booking portal | · | · | · | · | · | · | · | · | · | · |
|
||||
| 418 | TSHOOT | Investigate vehicle tracker health | · | · | · | · | · | · | · | · | · | · |
|
||||
|
||||
_E = full exam, D = drill, · = not in that session, n/m = partial credit._
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Reference in New Issue
Block a user