{"record":{"id":"2498aa35302b2680","repo":"kubernetes/kops","slug":"wait-time-exceeded-during-validation","errorCode":null,"errorMessage":"wait time exceeded during validation","messagePattern":"wait time exceeded during validation","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"cmd/kops/validate_cluster.go","lineNumber":190,"sourceCode":"\t\treturn nil, fmt.Errorf(\"getting http client: %w\", err)\n\t}\n\n\tk8sClient, err := kubernetes.NewForConfigAndClient(restConfig, httpClient)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"building kubernetes client: %w\", err)\n\t}\n\n\ttimeout := time.Now().Add(options.wait)\n\n\tvalidator, err := validation.NewClusterValidator(cluster, cloud, list, options.filterInstanceGroups, options.filterPodsForValidation, options.MaxUnreadyNodes, restConfig, k8sClient)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"unexpected error creating validatior: %v\", err)\n\t}\n\n\tconsecutive := 0\n\tfor {\n\t\tif options.wait > 0 && time.Now().After(timeout) && consecutive == 0 {\n\t\t\treturn nil, fmt.Errorf(\"wait time exceeded during validation\")\n\t\t}\n\n\t\tresult, err := validator.Validate(ctx)\n\t\tif err != nil {\n\t\t\tconsecutive = 0\n\t\t\tif options.wait > 0 {\n\t\t\t\tklog.Warningf(\"(will retry): unexpected error during validation: %v\", err)\n\t\t\t\ttime.Sleep(options.interval)\n\t\t\t\tcontinue\n\t\t\t} else {\n\t\t\t\treturn nil, fmt.Errorf(\"unexpected error during validation: %v\", err)\n\t\t\t}\n\t\t}\n\n\t\tswitch options.output {\n\t\tcase OutputTable:\n\t\t\tif err := validateClusterOutputTable(result, cluster, instanceGroups, out); err != nil {\n\t\t\t\treturn nil, err","sourceCodeStart":172,"sourceCodeEnd":208,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/cmd/kops/validate_cluster.go#L172-L208","documentation":"When --wait is set, RunValidateCluster polls validator.Validate(ctx) until the wait deadline. If the deadline passes and the cluster has not yet achieved one successful validation round (consecutive == 0), it gives up with this error. It means the cluster never validated even once within the wait window.","triggerScenarios":"`kops validate cluster --wait <duration>` where the API server is unreachable or nodes are NotReady for the entire wait duration, so validator.Validate never returns a passing result before timeout.","commonSituations":"Validating right after `kops update cluster` while instances are still bootstrapping; API server load balancer not yet healthy; network/firewall blocking the admin port; node bootstrap (nodeup) failures preventing any node from becoming Ready.","solutions":["Increase --wait (e.g. --wait 15m) if nodes are still converging.","Check actual node/API health: `kubectl get nodes`, `kops validate cluster` without --wait for a snapshot, or view instance group logs.","Fix root cause on nodes: SSH to a node or check `kops get instances` and cloud console for failed bootstraps.","Verify the API endpoint/DNS resolves and security groups allow access from your client.","If the cluster is genuinely broken, inspect `journalctl -u kubelet` on nodes or re-run `kops update cluster --yes` / rolling update."],"exampleFix":"// before\nkops validate cluster --name mycluster --wait 2m\n// after\nkops validate cluster --name mycluster --wait 15m","handlingStrategy":"retry","validationCode":"deadline := time.Now().Add(waitDuration)\n// give nodes time to converge: check basic API reachability first\nif _, err := discovery.NewDiscoveryClientForConfig(restConfig).ServerVersion(); err != nil {\n\treturn fmt.Errorf(\"api server unreachable before validation: %v\", err)\n}","typeGuard":null,"tryCatchPattern":"err := runValidate(ctx, opts)\nif err != nil && strings.Contains(err.Error(), \"wait time exceeded during validation\") {\n\t// retry with a longer window or alert on cluster health\n\treturn diagnoseNodes(ctx, clusterName)\n}","preventionTips":["Use --wait at least 10-15m after rolling updates or cluster creation.","Pre-check API reachability with kubectl before waiting on validation.","Monitor nodeup/bootstrap logs so failures don't silently eat the wait window.","Script retries with exponentially longer --wait rather than one short attempt."],"tags":["kubernetes","timeout","validation"],"backgroundTag":"wait-timeout-during-validation","analyzedSha":"4c8573c808a73d578c5eadc86d410646ea0b0d73","analyzedAt":"2026-09-05T04:13:19.212Z","contentChangedAt":"2026-09-05T04:13:19.212Z","schemaVersion":2},"datasetVersion":"2026-09-12T07:17:12.445Z"}