kubernetes/kops · error

building dynamic client: %w

Error message

building dynamic client: %w

What it means

Wraps a failure of dynamic.NewForConfigAndClient in clusterInfo.DynamicClient: the Kubernetes dynamic client could not be constructed from the REST config and HTTP client, usually due to invalid server URL or auth material in kubeconfig.

Source

Thrown at cmd/kops/util/factory.go:242

func (f *Factory) DynamicClient(ctx context.Context, cluster *kops.Cluster, options kubeconfig.CreateKubecfgOptions) (dynamic.Interface, error) {
	clusterInfo := f.getClusterInfo(cluster, options)
	restConfig, err := clusterInfo.RESTConfig(ctx)
	if err != nil {
		return nil, err
	}
	return clusterInfo.DynamicClient(restConfig)
}

func (f *clusterInfo) DynamicClient(restConfig *rest.Config) (dynamic.Interface, error) {
	if f.cachedDynamicClient == nil {
		httpClient, err := f.HTTPClient(restConfig)
		if err != nil {
			return nil, err
		}

		dynamicClient, err := dynamic.NewForConfigAndClient(restConfig, httpClient)
		if err != nil {
			return nil, fmt.Errorf("building dynamic client: %w", err)
		}
		f.cachedDynamicClient = dynamicClient
	}
	return f.cachedDynamicClient, nil
}

func (f *Factory) VFSContext() *vfs.VFSContext {
	if f.vfsContext == nil {
		// TODO vfs.NewVFSContext()
		f.vfsContext = vfs.Context
	}
	return f.vfsContext
}

func (f *Factory) buildRESTConfig(ctx context.Context, cluster *kops.Cluster, options kubeconfig.CreateKubecfgOptions) (*rest.Config, error) {
	clientset, err := f.KopsClient()
	if err != nil {
		return nil, err

View on GitHub (pinned to 4c8573c808)

Solutions

1. Verify the API server URL in kubeconfig
2. Refresh client certificates
3. Ensure the exec credential plugin works

When it happens

Trigger: Thrown at cmd/kops/util/factory.go:242 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/3e960216a07d63cb. Report an issue: GitHub.