kubernetes/kops · error

getting rest config: %w

Error message

getting rest config: %w

What it means

Wraps a failure of f.RESTConfig in RunValidateCluster: kOps could not build a REST config (connection settings/credentials) for the cluster's API server, so validation cannot query the Kubernetes API.

Source

Thrown at cmd/kops/validate_cluster.go:167

	}

	if options.output == OutputTable {
		fmt.Fprintf(out, "Validating cluster %v\n\n", cluster.ObjectMeta.Name)
	}

	var instanceGroups []kopsapi.InstanceGroup
	for _, ig := range list.Items {
		instanceGroups = append(instanceGroups, ig)
		klog.V(2).Infof("instance group: %#v\n\n", ig.Spec)
	}

	if len(instanceGroups) == 0 {
		return nil, fmt.Errorf("no InstanceGroup objects found")
	}

	restConfig, err := f.RESTConfig(ctx, cluster, options.CreateKubecfgOptions)
	if err != nil {
		return nil, fmt.Errorf("getting rest config: %w", err)
	}

	httpClient, err := f.HTTPClient(restConfig)
	if err != nil {
		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)
	}

View on GitHub (pinned to 4c8573c808)

Solutions

1. Run kops export kubecfg to refresh credentials
2. Verify the API server endpoint is reachable
3. Check kubeconfig TLS/CA data

When it happens

Trigger: Thrown at cmd/kops/validate_cluster.go:167 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of kubernetes/kops@4c8573c808 (2026-09-05). Data as JSON: /api/errors/452512cdf56911f0. Report an issue: GitHub.