CKA
955 incident response problems that help with CKA prep.
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All problems (955)
K8S-1582A metrics adapter query is corrected and one HPA still reads zeroOne HPA still reads zero after adapter query corrections.KubernetesIntermediate9 minProK8S-1534A cert-manager DNS challenge starts and still failsDNS01 validation fails intermittently in zones managed by multiple reconcilers.KubernetesIntermediate10 minProK8S-1524A cert-manager DNS challenge starts fine and still failsDNS01 validation fails intermittently in zones managed by multiple reconcilers.KubernetesIntermediate10 minProK8S-1472A cert-manager HTTP01 challenge reaches the ingress and still failsCertificate issuance fails only after canary ingress annotations are added for a blue-green rollout.KubernetesIntermediate10 minProK8S-1514A cert-manager order completes and renewal still failsACME DNS01 renewals fail intermittently in zones managed by both cert-manager and ExternalDNS.KubernetesIntermediate10 minProK8S-1554A cert-manager renewal starts and Route53 validation still failsDNS validation fails only for one delegated zone after renewal automation changes.KubernetesIntermediate10 minProK8S-1446A Grafana Agent DaemonSet misses one namespaceOne namespace never appears in scrape discovery after a label-controller rollout.KubernetesIntermediate10 minProK8S-1572A Karpenter node class updates and one nodegroup still launches with the old profileOne Karpenter nodegroup launches with the old instance profile after a rename.KubernetesIntermediate10 minProK8S-1528A Karpenter provisioner launches nodes and pods remain pendingPods stay pending on one scheduling path after a label schema migration.KubernetesIntermediate10 minProK8S-1518A Karpenter provisioner launches nodes and pods still stay pendingPods remain pending only on one scheduling path after a Karpenter label schema migration.KubernetesIntermediate10 minProK8S-1607A Loki rule update is correct and one shard still evaluates old dataOne Loki shard still evaluates old data after a rule update.KubernetesAdvanced10 minProK8S-1587A Loki ruler update is applied and one shard still evaluates the old ruleOne Loki ruler shard evaluates the old rule set after routing updates.KubernetesAdvanced10 minProK8S-1597A Loki tenant split succeeds and one ruler still reads the old OrgIDOne Loki ruler still reads the old OrgID after tenant split.KubernetesAdvanced10 minProK8S-1512A metrics adapter reports healthy and HPA still does not scaleAn HPA stalls only after scrape interval tuning in the metrics stack.KubernetesIntermediate10 minProK8S-1532A metrics adapter reports healthy and HPA still stays flatAutoscaling stops only after metrics scrape interval tuning.KubernetesIntermediate10 minProK8S-1522A metrics adapter reports healthy and the HPA still stays flatAutoscaling stops only after metrics scrape interval tuning.KubernetesIntermediate10 minProK8S-1562A Prometheus remote-write path backs up and the HPA still reads calm trafficHPA underreacts only when remote-write throttling begins.KubernetesIntermediate10 minProK8S-1502A Prometheus remote-write path drains and one shard still lagsOnly one remote-write shard falls behind after a gateway update changed HTTP header normalization.KubernetesIntermediate10 minProK8S-1492A Prometheus remote-write queue drains and one shard still lagsOnly one remote-write shard keeps falling behind after a gateway change normalized HTTP header casing.KubernetesIntermediate10 minProK8S-1552A Prometheus rule fires and the HPA still idlesAutoscaling stops only for low-volume workloads after recording rule tuning.KubernetesIntermediate10 minPro