ErrorNotes

☸️ Kubernetes Errors

37 error notes

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kubernetesbeginner

KubernetesのErrImageNeverPullエラーの修正方法 (imagePullPolicy: Never)

Failed to pull image "myapp:latest": rpc error: code = Unknown desc = failed to pull and unpack image: ErrImageNeverPull
kubernetesdockerdevopsトラブルシューティング
kubernetesintermediate

KubernetesのJobがBackoffLimitExceededで停止していませんか？解決方法を解説

Warning BackoffLimitExceeded Job has reached the specified backoff limit
kubernetesdevopsトラブルシューティングk8s-job
kubernetesintermediate

Kubernetesエラーを修正: no matches for kind "Ingress" in version "extensions/v1beta1"

error: unable to recognize "deploy.yaml": no matches for kind "Ingress" in version "extensions/v1beta1"
kubernetesapi-versiondeprecatedingress
kubernetes初級

kubectl port-forward の修正: 'Pod is not running Current status=Pending'

error: unable to forward port because pod is not running. Current status=Pending
kubectlport-forwardpodデバッグ
kubernetesintermediate

「x509: certificate has expired」エラーの修正と kubectl アクセスの復旧

Unable to connect to the server: x509: certificate has expired or is not yet valid
KuberneteskubeadmSSLTLS
kubernetesintermediate

'Terminating' 状態で停止した Kubernetes Pod を強制削除する方法

pod "my-pod" stuck in Terminating state, DeletionTimestamp set but pod not deleted after grace period
kubernetespodterminatingfinalizer
kubernetes初級

Podスケジューリングエラーの解決方法: 0/1 nodes are available: 1 node(s) had taint {key: value}, that the pod didn't tolerate

0/1 nodes are available: 1 node(s) had taint {key: value}, that the pod didn't tolerate.
kubernetesスケジューリングtaintstolerations
kubernetesintermediate

Kubernetesで「Cannot evict pod as it would violate the pod's disruption budget」エラーを修正する方法

Cannot evict pod as it would violate the pod's disruption budget.
kubernetespdbpoddisruptionbudgeteviction
kubernetesintermediate

Kubernetesの修正：webhook "validate.nginx.ingress.kubernetes.io" の呼び出しに失敗しました

Internal error occurred: failed calling webhook "validate.nginx.ingress.kubernetes.io": service "ingress-nginx-controller-admission" not found
kuberneteswebhooknginx-ingressdevops
kubernetesintermediate

Kubectl Drainの解決策：ノードメンテナンス中のDaemonSet管理下ポッドの扱い方

error: cannot delete DaemonSet-managed Pods (use --ignore-daemonsets to ignore): kube-system/kube-proxy-xxxx, kube-system/calico-node-xxxx
kuberneteskubectlドレインdaemonset
kubernetesintermediate

KubernetesのSecurityContextで「container has runAsNonRoot and image will run as root」を修正する

Error: container has runAsNonRoot and image will run as root (pod: "...", container: "...")
kubernetessecurity-contextrunAsNonRootpod-security
kubernetesintermediate

Kubernetes Ingressの503エラー修正：「No Endpoints Available」の解決策

503 Service Temporarily Unavailable no endpoints available for service "my-service"
ingressnginx-ingress503endpoints
kubernetesintermediate

Helmエラー解決：rendered manifests contain a resource that already existsの対処法

Error: UPGRADE FAILED: rendered manifests contain a resource that already exists. Unable to continue with update: existing resource conflict
kuberneteshelmdevopsトラブルシューティング
kubernetesintermediate

Init:CrashLoopBackOffの解決：Kubernetes Initコンテナが失敗する理由と対処法

Init:CrashLoopBackOff
kubernetesinit-containercrashloopbackoffトラブルシューティング
kubernetesintermediate

KubernetesでLiveness Probe Failed: context deadline exceededによる継続的なPod再起動を修正する

Liveness probe failed: Get "http://10.0.0.1:8080/healthz": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
liveness-probehealth-checkpodrestart
kubernetesintermediate

Kubernetes LoadBalancer ServiceがPending状態のまま — External IPが割り当てられない問題を修正

Service is in Pending state and External IP is <pending>
kubernetesserviceloadbalancercloud-provider
kubernetesintermediate

Podが強制退去エラー「The node was low on resource memory」をKubernetesで修正する方法

The node was low on resource: memory. Threshold quantity: 100Mi, available: 95Mi.
kubernetespodevictionmemory
kubernetesintermediate

Kubernetesにおける 'exec format error' (standard_init_linux.go:211) の修正：ARM vs x86

standard_init_linux.go:211: exec user process caused "exec format error"
kubernetesdockerarm64devops
kubernetesintermediate

KubernetesのEviction（退去）を修正する：「Pod ephemeral local storage usage exceeds the total limit」

Pod ephemeral local storage usage exceeds the total limit of containers 512Mi
kubernetesstorageephemeral-storageeviction
kubernetesintermediate

'tls: certificate signed by unknown authority' を修正 — kubectl が API サーバーに接続できない

Unable to connect to the server: tls: certificate signed by unknown authority
tls証明書kubectlkubeconfig
kubernetesintermediate

KubernetesノードのNotReadyを修正する: Node node-1 status is now: NodeNotReady

Node node-1 status is now: NodeNotReady
kubernetesnodenotreadykubelet
kubernetesbeginner

「No StorageClass Set」エラーの解決策：KubernetesのPVCがPending状態のままになる理由

persistentvolumeclaims "my-pvc" is forbidden: no persistent volumes available for this claim and no storage class is set
kubernetespvcdevopsstorageclass
kubernetes初級

解決策：Kubernetes MountVolume.SetUp Failed (ConfigMap Not Found) エラー

MountVolume.SetUp failed for volume "config-vol" : configmap "app-config" not found
kubernetesトラブルシューティングconfigmapsecret
kubernetesintermediate

Kubernetesエラーの解決方法：0/3 nodes are available: 1 Insufficient cpu, 2 Insufficient memory

0/3 nodes are available: 1 Insufficient cpu, 2 Insufficient memory. preemption: 0/3 nodes are available: 3 No preemption victims found for incoming pod.
kubernetespodスケジューリングトラブルシューティング
kubernetesintermediate

KubernetesのDNSエラー解決ガイド：dial tcp lookup on 10.96.0.10:53 no such host

dial tcp: lookup <service-name> on 10.96.0.10:53: no such host
kubernetesdnscorednsトラブルシューティング
kubernetesbeginner

Kubernetesで「The connection to the server localhost:8443 was refused」を修正する

The connection to the server localhost:8443 was refused
kubernetesapiserverkubectlconnection
kubernetesintermediate

Kubernetesデプロイメントのスタック修正：「Waiting for deployment rollout to finish: 1 old replicas are pending termination」

Waiting for deployment "my-app" rollout to finish: 1 old replicas are pending termination...
kubernetesdeploymentrolling-updaterollout
kubernetesintermediate

Kubernetes OOMKilledを修正する：メモリ不足でPodが強制終了された場合

OOMKilled
kubernetesメモリoomリソース制限
kubernetesintermediate

Kubernetes ResourceQuota超過エラーの修正: pods is forbidden: exceeded quota

Error from server (Forbidden): pods "my-pod" is forbidden: exceeded quota: my-quota, requested: cpu=500m, used: cpu=900m, limited: cpu=1
kubernetesresourcequotaクォータネームスペース
kubernetesintermediate

KubernetesのForbiddenエラーを修正: ユーザーがリソースを作成できない（RBAC）

Error from server (Forbidden): pods "my-pod" is forbidden: User "system:serviceaccount:default:default" cannot create resource "pods" in API group "" in the namespace "default"
kubernetesrbacパーミッションforbidden
kubernetesintermediate

Readiness Probeの失敗を修正する：KubernetesでHTTPプローブがstatusCode: 500で失敗する

Readiness probe failed: HTTP probe failed with statuscode: 500
kubernetesreadiness-probepoddeployment
kubernetesintermediate

HorizontalPodAutoscalerがスケールしない問題を修正："unable to get metrics for resource cpu: no metrics returned from resource metrics API"

unable to get metrics for resource cpu: no metrics returned from resource metrics API
kuberneteshpaautoscalermetrics-server
kubernetesintermediate

KubernetesネームスペースがTerminating状態でスタックする問題を修正する（Error from server: namespaces is being deleted）

Error from server: namespaces "my-namespace" is being deleted
kubernetesnamespaceterminatingfinalizer
kubernetesintermediate

KubernetesのPodがPending状態で止まる問題を修正: "0/3 nodes are available: 3 Insufficient cpu"

0/3 nodes are available: 3 Insufficient cpu
kubernetesスケジューリングリソースノード
kubernetesintermediate

KubernetesでMountVolume.SetUp failed for volume: mount failed exit status 32を修正する

MountVolume.SetUp failed for volume "my-pv" : mount failed: exit status 32
kubernetespersistent-volumemountstorage
kubernetesintermediate

Kubernetes ImagePullBackOff の修正：原因と解決策

ImagePullBackOff
kubernetesimagepullregistry
kubernetesintermediate

Kubernetes CrashLoopBackOffの修正：トラブルシューティングガイド

CrashLoopBackOff