Difference between revisions of "Kubernetes troubleshooting"
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| Line 49: | Line 49: | ||
* <code>[[NodeNotReady]]</code> | * <code>[[NodeNotReady]]</code> | ||
* <code>[[kubectl-node-shell]]</code> | * <code>[[kubectl-node-shell]]</code> | ||
| + | * <code>[[kubectl exec]]</code> | ||
== Activities == | == Activities == | ||
Revision as of 09:38, 28 September 2023
Commands
kubectl logs your_podkubectl get events -Akubectl describe pod your_podkubectl describe nodes, reviewconditions:
- Tools:
kubectl top,K9sandcrictl
Events
- FailedScheduling:
Insufficient cpu,Insufficient memory,timed out waiting for the condition,unbound immediate PersistentVolumeClaims kubectl get events, OOMKilling, FailedKillPod, SuccessfulDelete, SuccessfulCreate, NoPods, Warning, Critical, NodeSysctlChange, FailedAttachVolume, FailedMount, UnAvailableLoadBalancer, FailedCreatePodSandBox, InvalidDiskCapacity, Scheduled, NetworkNotReady, Evict, Killing, SuccessfulReconcilied, FailedToUpdateEndpointSlices, BackendNotFound, FailedScheduling, ProvisioningFailed- Kubernetes node events: Kubernetes node events,
NodeNotSchedulable,NodeAllocatableEnforced,NodeHasNoDiskPressure, DiskPressure, NodeHasSufficientMemory,NodeHasSufficientPID,RegisteredNode,InvalidDiskCapacity,Starting,NodeReady,RemovingNode
Kubernetes components
- Kubernetes scheduling
- Kubernetes Pod Topology Spread Constraints
- Kubernetes pod affinity and anti affinity
- Karpenter
ttlSecondsUntilExpired,controller.node Triggering termination for expired node after 168h0m0s .../...
Log
Related
- Readiness, Liveness,
Readiness probe errored - Reason: ProbeWarning
- Kubernetes Pod Disruptions
Unable to connect to the server, ~/.kube/configDiskPressureCalculateExpectedPodCountFailedaws eks create-cluster --loggingNode-pressure Evictionkarpenter.sh/do-not-evict: trueNodeNotReadykubectl-node-shellkubectl exec
Activities
- Review: https://learnk8s.io/troubleshooting-deployments
- Kubernetes debugging with an ephemeral debug container:
kubectl debug
See also
kubectl get events, OOMKilling, FailedKillPod, SuccessfulDelete, SuccessfulCreate, NoPods, Warning, Critical, NodeSysctlChange, FailedAttachVolume, FailedMount, UnAvailableLoadBalancer, FailedCreatePodSandBox, InvalidDiskCapacity, Scheduled, NetworkNotReady, Evict, Killing, SuccessfulReconcilied, FailedToUpdateEndpointSlices, BackendNotFound, FailedScheduling, ProvisioningFailed- Kubernetes node events: Kubernetes node events,
NodeNotSchedulable,NodeAllocatableEnforced,NodeHasNoDiskPressure, DiskPressure, NodeHasSufficientMemory,NodeHasSufficientPID,RegisteredNode,InvalidDiskCapacity,Starting,NodeReady,RemovingNode - K8s troubleshooting:
kubectl logs, kubectl top, kubectl get events -A, kubectl describe pod, Liveness, Readiness,Kubernetes events, Pulling image, OOMKilled, ProbeWarning, Reason,FailedScheduling,errImagePull, ImagePullBackOff, Kubelet conditions:MemoryPressure, DiskPressure, KubeletHasSufficientPID, KubeletReady, kubectl [ debug | attach | exec ] kubectl cluster-info dump, SimKube, KWOK
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