kubernetes/kops · error

wait time exceeded during validation

Error message

wait time exceeded during validation

What it means

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.

Source

Thrown at cmd/kops/validate_cluster.go:190

		return nil, fmt.Errorf("getting http client: %w", err)
	}

	k8sClient, err := kubernetes.NewForConfigAndClient(restConfig, httpClient)
	if err != nil {
		return nil, fmt.Errorf("building kubernetes client: %w", err)
	}

	timeout := time.Now().Add(options.wait)

	validator, err := validation.NewClusterValidator(cluster, cloud, list, options.filterInstanceGroups, options.filterPodsForValidation, options.MaxUnreadyNodes, restConfig, k8sClient)
	if err != nil {
		return nil, fmt.Errorf("unexpected error creating validatior: %v", err)
	}

	consecutive := 0
	for {
		if options.wait > 0 && time.Now().After(timeout) && consecutive == 0 {
			return nil, fmt.Errorf("wait time exceeded during validation")
		}

		result, err := validator.Validate(ctx)
		if err != nil {
			consecutive = 0
			if options.wait > 0 {
				klog.Warningf("(will retry): unexpected error during validation: %v", err)
				time.Sleep(options.interval)
				continue
			} else {
				return nil, fmt.Errorf("unexpected error during validation: %v", err)
			}
		}

		switch options.output {
		case OutputTable:
			if err := validateClusterOutputTable(result, cluster, instanceGroups, out); err != nil {
				return nil, err

View on GitHub (pinned to 4c8573c808)

Solutions

1. Increase --wait (e.g. --wait 15m) if nodes are still converging.
2. Check actual node/API health: `kubectl get nodes`, `kops validate cluster` without --wait for a snapshot, or view instance group logs.
3. Fix root cause on nodes: SSH to a node or check `kops get instances` and cloud console for failed bootstraps.
4. Verify the API endpoint/DNS resolves and security groups allow access from your client.
5. If the cluster is genuinely broken, inspect `journalctl -u kubelet` on nodes or re-run `kops update cluster --yes` / rolling update.

Example fix

// before
kops validate cluster --name mycluster --wait 2m
// after
kops validate cluster --name mycluster --wait 15m

deadline := time.Now().Add(waitDuration)
// give nodes time to converge: check basic API reachability first
if _, err := discovery.NewDiscoveryClientForConfig(restConfig).ServerVersion(); err != nil {
	return fmt.Errorf("api server unreachable before validation: %v", err)
}

err := runValidate(ctx, opts)
if err != nil && strings.Contains(err.Error(), "wait time exceeded during validation") {
	// retry with a longer window or alert on cluster health
	return diagnoseNodes(ctx, clusterName)
}

When it happens

Trigger: `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.

Common situations: 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.

Related errors

• cluster passed validation %d consecutive times
• failed to parse apiVersion %q
• failed to find kind in object
• invalid InstanceGroup name: %v
• waiting for kubernetes API to be served: %w

AI-assisted analysis of kubernetes/kops@4c8573c808 (2026-09-05). Data as JSON: /api/errors/2498aa35302b2680. Report an issue: GitHub.